diff --git a/src/compiler/CompilerIR.h b/src/compiler/CompilerIR.h
index d08af07..4327fb6 100644
--- a/src/compiler/CompilerIR.h
+++ b/src/compiler/CompilerIR.h
@@ -128,6 +128,7 @@
 #define INVALID_SREG (-1)
 #define INVALID_VREG (0xFFFFU)
 #define INVALID_REG (0xFF)
+#define INVALID_OFFSET (0xDEADF00FU)
 
 /* SSA encodings for special registers */
 #define SSA_METHOD_BASEREG (-2)
@@ -176,6 +177,28 @@
   u8 defMask;                 // Resource mask for def
 };
 
+/* Shared pseudo opcodes - must be < 0 */
+enum LIRPseudoOpcode {
+  kPseudoExportedPC = -18,
+  kPseudoSafepointPC = -17,
+  kPseudoIntrinsicRetry = -16,
+  kPseudoSuspendTarget = -15,
+  kPseudoThrowTarget = -14,
+  kPseudoCaseLabel = -13,
+  kPseudoMethodEntry = -12,
+  kPseudoMethodExit = -11,
+  kPseudoBarrier = -10,
+  kPseudoExtended = -9,
+  kPseudoSSARep = -8,
+  kPseudoEntryBlock = -7,
+  kPseudoExitBlock = -6,
+  kPseudoTargetLabel = -5,
+  kPseudoDalvikByteCodeBoundary = -4,
+  kPseudoPseudoAlign4 = -3,
+  kPseudoEHBlockLabel = -2,
+  kPseudoNormalBlockLabel = -1,
+};
+
 enum ExtendedMIROpcode {
   kMirOpFirst = kNumPackedOpcodes,
   kMirOpPhi = kMirOpFirst,
@@ -326,7 +349,6 @@
       totalSize(0),
       assemblerStatus(kSuccess),
       assemblerRetries(0),
-      genDebugger(false),
       printMe(false),
       hasLoop(false),
       hasInvoke(false),
@@ -435,7 +457,6 @@
   std::vector<uint32_t> coreVmapTable;
   std::vector<uint32_t> fpVmapTable;
   std::vector<uint8_t> nativeGcMap;
-  bool genDebugger;                   // Generate code for debugger
   bool printMe;
   bool hasLoop;                       // Contains a loop
   bool hasInvoke;                     // Contains an invoke instruction
@@ -643,6 +664,73 @@
   kCondNv,  // never
 };
 
+// Target specific condition encodings
+enum ArmConditionCode {
+  kArmCondEq = 0x0,  /* 0000 */
+  kArmCondNe = 0x1,  /* 0001 */
+  kArmCondCs = 0x2,  /* 0010 */
+  kArmCondCc = 0x3,  /* 0011 */
+  kArmCondMi = 0x4,  /* 0100 */
+  kArmCondPl = 0x5,  /* 0101 */
+  kArmCondVs = 0x6,  /* 0110 */
+  kArmCondVc = 0x7,  /* 0111 */
+  kArmCondHi = 0x8,  /* 1000 */
+  kArmCondLs = 0x9,  /* 1001 */
+  kArmCondGe = 0xa,  /* 1010 */
+  kArmCondLt = 0xb,  /* 1011 */
+  kArmCondGt = 0xc,  /* 1100 */
+  kArmCondLe = 0xd,  /* 1101 */
+  kArmCondAl = 0xe,  /* 1110 */
+  kArmCondNv = 0xf,  /* 1111 */
+};
+
+enum X86ConditionCode {
+  kX86CondO   = 0x0,    // overflow
+  kX86CondNo  = 0x1,    // not overflow
+
+  kX86CondB   = 0x2,    // below
+  kX86CondNae = kX86CondB,  // not-above-equal
+  kX86CondC   = kX86CondB,  // carry
+
+  kX86CondNb  = 0x3,    // not-below
+  kX86CondAe  = kX86CondNb, // above-equal
+  kX86CondNc  = kX86CondNb, // not-carry
+
+  kX86CondZ   = 0x4,    // zero
+  kX86CondEq  = kX86CondZ,  // equal
+
+  kX86CondNz  = 0x5,    // not-zero
+  kX86CondNe  = kX86CondNz, // not-equal
+
+  kX86CondBe  = 0x6,    // below-equal
+  kX86CondNa  = kX86CondBe, // not-above
+
+  kX86CondNbe = 0x7,    // not-below-equal
+  kX86CondA   = kX86CondNbe,// above
+
+  kX86CondS   = 0x8,    // sign
+  kX86CondNs  = 0x9,    // not-sign
+
+  kX86CondP   = 0xA,    // 8-bit parity even
+  kX86CondPE  = kX86CondP,
+
+  kX86CondNp  = 0xB,    // 8-bit parity odd
+  kX86CondPo  = kX86CondNp,
+
+  kX86CondL   = 0xC,    // less-than
+  kX86CondNge = kX86CondL,  // not-greater-equal
+
+  kX86CondNl  = 0xD,    // not-less-than
+  kX86CondGe  = kX86CondNl, // not-greater-equal
+
+  kX86CondLe  = 0xE,    // less-than-equal
+  kX86CondNg  = kX86CondLe, // not-greater
+
+  kX86CondNle = 0xF,    // not-less-than
+  kX86CondG   = kX86CondNle,// greater
+};
+
+
 enum ThrowKind {
   kThrowNullPointer,
   kThrowDivZero,
diff --git a/src/compiler/Frontend.cc b/src/compiler/Frontend.cc
index c5d5c21..e05c32f 100644
--- a/src/compiler/Frontend.cc
+++ b/src/compiler/Frontend.cc
@@ -884,19 +884,6 @@
         (1 << kMatch) |
         (1 << kPromoteCompilerTemps));
   }
-  /* Are we generating code for the debugger? */
-  if (compiler.IsDebuggingSupported()) {
-    cUnit->genDebugger = true;
-    // Yes, disable most optimizations
-    cUnit->disableOpt |= (
-        (1 << kLoadStoreElimination) |
-        (1 << kLoadHoisting) |
-        (1 << kSuppressLoads) |
-        (1 << kPromoteRegs) |
-        (1 << kBBOpt) |
-        (1 << kMatch) |
-        (1 << kTrackLiveTemps));
-  }
 
   /* Gathering opcode stats? */
   if (kCompilerDebugFlags & (1 << kDebugCountOpcodes)) {
diff --git a/src/compiler/codegen/CodegenFactory.cc b/src/compiler/codegen/CodegenFactory.cc
index ce25aad..b0dc30c 100644
--- a/src/compiler/codegen/CodegenFactory.cc
+++ b/src/compiler/codegen/CodegenFactory.cc
@@ -16,16 +16,7 @@
 
 namespace art {
 
-/*
- * This file contains target-independent codegen and support, and is
- * included by:
- *
- *        $(TARGET_ARCH)/Codegen-$(TARGET_ARCH_VARIANT).c
- *
- * which combines this common code with specific support found in the
- * applicable directories below this one.
- *
- */
+/* This file contains target-independent codegen and support. */
 
 /*
  * Load an immediate value into a fixed or temp register.  Target
@@ -265,30 +256,6 @@
   }
 }
 
-/*
- * Mark garbage collection card. Skip if the value we're storing is null.
- */
-void markGCCard(CompilationUnit* cUnit, int valReg, int tgtAddrReg)
-{
-  int regCardBase = oatAllocTemp(cUnit);
-  int regCardNo = oatAllocTemp(cUnit);
-  LIR* branchOver = opCmpImmBranch(cUnit, kCondEq, valReg, 0, NULL);
-#if !defined(TARGET_X86)
-  loadWordDisp(cUnit, rSELF, Thread::CardTableOffset().Int32Value(),
-               regCardBase);
-#else
-  newLIR2(cUnit, kX86Mov32RT, regCardBase,
-          Thread::CardTableOffset().Int32Value());
-#endif
-  opRegRegImm(cUnit, kOpLsr, regCardNo, tgtAddrReg, CardTable::kCardShift);
-  storeBaseIndexed(cUnit, regCardBase, regCardNo, regCardBase, 0,
-                   kUnsignedByte);
-  LIR* target = newLIR0(cUnit, kPseudoTargetLabel);
-  branchOver->target = (LIR*)target;
-  oatFreeTemp(cUnit, regCardBase);
-  oatFreeTemp(cUnit, regCardNo);
-}
-
 /* Utilities to load the current Method* */
 void loadCurrMethodDirect(CompilationUnit *cUnit, int rTgt)
 {
diff --git a/src/compiler/codegen/CodegenUtil.cc b/src/compiler/codegen/CodegenUtil.cc
index cf06c80..7ad2647 100644
--- a/src/compiler/codegen/CodegenUtil.cc
+++ b/src/compiler/codegen/CodegenUtil.cc
@@ -74,24 +74,22 @@
 /*
  * Decode the register id.
  */
-inline u8 getRegMaskCommon(int reg)
+inline u8 getRegMaskCommon(CompilationUnit* cUnit, int reg)
 {
   u8 seed;
   int shift;
+  int regId;
 
-#if defined(TARGET_X86)
-  int regId = reg & 0xf;
-  /*
-   * Double registers in x86 are just a single FP register
-   */
-  seed = 1;
-#else
-  int regId = reg & 0x1f;
-  /*
-   * Each double register is equal to a pair of single-precision FP registers
-   */
-  seed = DOUBLEREG(reg) ? 3 : 1;
-#endif
+
+  if (cUnit->instructionSet == kX86) {
+    regId = reg & 0xf;
+    /* Double registers in x86 are just a single FP register */
+    seed = 1;
+  } else {
+    regId = reg & 0x1f;
+  /* Each double register is equal to a pair of single-precision FP registers */
+    seed = DOUBLEREG(reg) ? 3 : 1;
+  }
   /* FP register starts at bit position 16 */
   shift = FPREG(reg) ? kFPReg0 : 0;
   /* Expand the double register id into single offset */
@@ -99,18 +97,29 @@
   return (seed << shift);
 }
 
+u8 oatGetRegMaskCommon(CompilationUnit* cUnit, int reg)
+{
+  return getRegMaskCommon(cUnit, reg);
+}
+
 /*
  * Mark the corresponding bit(s).
  */
-inline void setupRegMask(u8* mask, int reg)
+inline void setupRegMask(CompilationUnit* cUnit, u8* mask, int reg)
 {
-  *mask |= getRegMaskCommon(reg);
+  *mask |= getRegMaskCommon(cUnit, reg);
+}
+
+/* Exported version of setupRegMask */
+void oatSetupRegMask(CompilationUnit* cUnit, u8* mask, int reg)
+{
+  setupRegMask(cUnit, mask, reg);
 }
 
 /*
  * Set up the proper fields in the resource mask
  */
-void setupResourceMasks(LIR* lir)
+void setupResourceMasks(CompilationUnit* cUnit, LIR* lir)
 {
   int opcode = lir->opcode;
   int flags;
@@ -120,7 +129,7 @@
     return;
   }
 
-  flags = EncodingMap[lir->opcode].flags;
+  flags = EncodingMap[opcode].flags;
 
   if (flags & NEEDS_FIXUP) {
     lir->flags.pcRelFixup = true;
@@ -145,135 +154,42 @@
   }
 
   if (flags & REG_DEF0) {
-    setupRegMask(&lir->defMask, lir->operands[0]);
+    setupRegMask(cUnit, &lir->defMask, lir->operands[0]);
   }
 
   if (flags & REG_DEF1) {
-    setupRegMask(&lir->defMask, lir->operands[1]);
+    setupRegMask(cUnit, &lir->defMask, lir->operands[1]);
   }
 
-#if defined(TARGET_X86)
-  if (flags & REG_DEFA) {
-    setupRegMask(&lir->defMask, rAX);
-  }
-
-  if (flags & REG_DEFD) {
-    setupRegMask(&lir->defMask, rDX);
-  }
-#endif
-
   if (flags & REG_DEF_SP) {
     lir->defMask |= ENCODE_REG_SP;
   }
 
-#if !defined(TARGET_X86)
-  if (flags & REG_DEF_LR) {
-    lir->defMask |= ENCODE_REG_LR;
-  }
-#endif
-
-#if defined(TARGET_ARM)
-  if (flags & REG_DEF_LIST0) {
-    lir->defMask |= ENCODE_REG_LIST(lir->operands[0]);
-  }
-
-  if (flags & REG_DEF_LIST1) {
-    lir->defMask |= ENCODE_REG_LIST(lir->operands[1]);
-  }
-
-  if (flags & REG_DEF_FPCS_LIST0) {
-    lir->defMask |= ENCODE_REG_FPCS_LIST(lir->operands[0]);
-  }
-
-  if (flags & REG_DEF_FPCS_LIST2) {
-    for (int i = 0; i < lir->operands[2]; i++) {
-      setupRegMask(&lir->defMask, lir->operands[1] + i);
-    }
-  }
-#endif
 
   if (flags & SETS_CCODES) {
     lir->defMask |= ENCODE_CCODE;
   }
 
-#if defined(TARGET_ARM)
-  /* Conservatively treat the IT block */
-  if (flags & IS_IT) {
-    lir->defMask = ENCODE_ALL;
-  }
-#endif
-
   if (flags & (REG_USE0 | REG_USE1 | REG_USE2 | REG_USE3)) {
     int i;
 
     for (i = 0; i < 4; i++) {
       if (flags & (1 << (kRegUse0 + i))) {
-        setupRegMask(&lir->useMask, lir->operands[i]);
+        setupRegMask(cUnit, &lir->useMask, lir->operands[i]);
       }
     }
   }
 
-#if defined(TARGET_X86)
-  if (flags & REG_USEA) {
-    setupRegMask(&lir->useMask, rAX);
-  }
-
-  if (flags & REG_USEC) {
-    setupRegMask(&lir->useMask, rCX);
-  }
-
-  if (flags & REG_USED) {
-    setupRegMask(&lir->useMask, rDX);
-  }
-#endif
-
-#if defined(TARGET_ARM)
-  if (flags & REG_USE_PC) {
-    lir->useMask |= ENCODE_REG_PC;
-  }
-#endif
-
   if (flags & REG_USE_SP) {
     lir->useMask |= ENCODE_REG_SP;
   }
 
-#if defined(TARGET_ARM)
-  if (flags & REG_USE_LIST0) {
-    lir->useMask |= ENCODE_REG_LIST(lir->operands[0]);
-  }
-
-  if (flags & REG_USE_LIST1) {
-    lir->useMask |= ENCODE_REG_LIST(lir->operands[1]);
-  }
-
-  if (flags & REG_USE_FPCS_LIST0) {
-    lir->useMask |= ENCODE_REG_FPCS_LIST(lir->operands[0]);
-  }
-
-  if (flags & REG_USE_FPCS_LIST2) {
-    for (int i = 0; i < lir->operands[2]; i++) {
-      setupRegMask(&lir->useMask, lir->operands[1] + i);
-    }
-  }
-#endif
-
   if (flags & USES_CCODES) {
     lir->useMask |= ENCODE_CCODE;
   }
 
-#if defined(TARGET_ARM)
-  /* Fixup for kThumbPush/lr and kThumbPop/pc */
-  if (opcode == kThumbPush || opcode == kThumbPop) {
-    u8 r8Mask = getRegMaskCommon(r8);
-    if ((opcode == kThumbPush) && (lir->useMask & r8Mask)) {
-      lir->useMask &= ~r8Mask;
-      lir->useMask |= ENCODE_REG_LR;
-    } else if ((opcode == kThumbPop) && (lir->defMask & r8Mask)) {
-      lir->defMask &= ~r8Mask;
-      lir->defMask |= ENCODE_REG_PC;
-    }
-  }
-#endif
+  // Handle target-specific actions
+  setupTargetResourceMasks(cUnit, lir);
 }
 
 /*
@@ -472,7 +388,7 @@
   insn->operands[3] = op3;
   insn->operands[4] = op4;
   insn->target = target;
-  oatSetupResourceMasks(insn);
+  oatSetupResourceMasks(cUnit, insn);
   if ((opcode == kPseudoTargetLabel) || (opcode == kPseudoSafepointPC) ||
       (opcode == kPseudoExportedPC)) {
     // Always make labels scheduling barriers
@@ -697,13 +613,19 @@
      * the auto pc-advance.  For other targets the reference point
      * is a label, so we can use the offset as-is.
      */
-#if defined(TARGET_ARM)
-    int bxOffset = tabRec->anchor->offset + 4;
-#elif defined(TARGET_X86)
-    int bxOffset = 0;
-#else
-    int bxOffset = tabRec->anchor->offset;
-#endif
+    int bxOffset = INVALID_OFFSET;
+    switch (cUnit->instructionSet) {
+      case kThumb2:
+        bxOffset = tabRec->anchor->offset + 4;
+        break;
+      case kX86:
+        bxOffset = 0;
+        break;
+      case kMips:
+        bxOffset = tabRec->anchor->offset;
+        break;
+      default: LOG(FATAL) << "Unexpected instruction set: " << cUnit->instructionSet;
+    }
     if (cUnit->printMe) {
       LOG(INFO) << "Switch table for offset 0x" << std::hex << bxOffset;
     }
diff --git a/src/compiler/codegen/CompilerCodegen.h b/src/compiler/codegen/CompilerCodegen.h
index 61ea6b6..d349412 100644
--- a/src/compiler/codegen/CompilerCodegen.h
+++ b/src/compiler/codegen/CompilerCodegen.h
@@ -79,6 +79,42 @@
 /* Implemented in codegen/<target>/<target_variant>/ArchVariant.c */
 void oatGenMemBarrier(CompilationUnit* cUnit, int barrierKind);
 
+LIR* genRegMemCheck(CompilationUnit* cUnit, ConditionCode cCode,
+                    int reg1, int base, int offset, ThrowKind kind);
+LIR* opThreadMem(CompilationUnit* cUnit, OpKind op, int threadOffset);
+LIR* opMem(CompilationUnit* cUnit, OpKind op, int rBase, int disp);
+LIR* storeBaseIndexedDisp(CompilationUnit *cUnit,
+                          int rBase, int rIndex, int scale, int displacement,
+                          int rSrc, int rSrcHi, OpSize size, int sReg);
+LIR* opRegMem(CompilationUnit *cUnit, OpKind op, int rDest, int rBase, int offset);
+LIR* opCmpBranch(CompilationUnit* cUnit, ConditionCode cond, int src1,
+                 int src2, LIR* target);
+void oatSetupRegMask(CompilationUnit* cUnit, u8* mask, int reg);
+u8 oatGetRegMaskCommon(CompilationUnit* cUnit, int reg);
+void setupTargetResourceMasks(CompilationUnit* cUnit, LIR* lir);
+RegLocation genDivRem(CompilationUnit* cUnit, RegLocation rlDest, int regLo, int regHi, bool isDiv);
+RegLocation genDivRemLit(CompilationUnit* cUnit, RegLocation rlDest, int regLo, int lit, bool isDiv);
+void markGCCard(CompilationUnit* cUnit, int valReg, int tgtAddrReg);
+bool genInlinedMinMaxInt(CompilationUnit *cUnit, CallInfo* info, bool isMin);
+void opLea(CompilationUnit* cUnit, int rBase, int reg1, int reg2, int scale, int offset);
+void opTlsCmp(CompilationUnit* cUnit, int offset, int val);
+bool genInlinedSqrt(CompilationUnit* cUnit, CallInfo* info);
+bool genInlinedCas32(CompilationUnit* cUnit, CallInfo* info, bool need_write_barrier);
+LIR* opPcRelLoad(CompilationUnit* cUnit, int reg, LIR* target);
+LIR* opVldm(CompilationUnit* cUnit, int rBase, int count);
+LIR* opVstm(CompilationUnit* cUnit, int rBase, int count);
+void genMultiplyByTwoBitMultiplier(CompilationUnit* cUnit, RegLocation rlSrc,
+                                   RegLocation rlResult, int lit,
+                                   int firstBit, int secondBit);
+RegLocation inlineTarget(CompilationUnit* cUnit, CallInfo* info);
+RegLocation inlineTargetWide(CompilationUnit* cUnit, CallInfo* info);
+void genDivZeroCheck(CompilationUnit* cUnit, int regLo, int regHi);
+LIR* genImmedCheck(CompilationUnit* cUnit, ConditionCode cCode,
+                   int reg, int immVal, ThrowKind kind);
+LIR* opTestSuspend(CompilationUnit* cUnit, LIR* target);
+LIR* opDecAndBranch(CompilationUnit* cUnit, ConditionCode cCode, int reg, LIR* target);
+LIR* opIT(CompilationUnit* cUnit, ArmConditionCode cond, const char* guide);
+
 }  // namespace art
 
 #endif  // ART_SRC_COMPILER_COMPILERCODEGEN_H_
diff --git a/src/compiler/codegen/GenCommon.cc b/src/compiler/codegen/GenCommon.cc
index 7305271..035617e 100644
--- a/src/compiler/codegen/GenCommon.cc
+++ b/src/compiler/codegen/GenCommon.cc
@@ -24,11 +24,8 @@
  * and "op" calls may be used here.
  */
 void genInvoke(CompilationUnit* cUnit, CallInfo* info);
-#if defined(TARGET_ARM)
-LIR* opIT(CompilationUnit* cUnit, ArmConditionCode cond, const char* guide);
 bool smallLiteralDivide(CompilationUnit* cUnit, Instruction::Code dalvikOpcode,
                         RegLocation rlSrc, RegLocation rlDest, int lit);
-#endif
 
 void markSafepointPC(CompilationUnit* cUnit, LIR* inst)
 {
@@ -37,86 +34,71 @@
   DCHECK_EQ(safepointPC->defMask, ENCODE_ALL);
 }
 
-void callRuntimeHelperImm(CompilationUnit* cUnit, int helperOffset, int arg0, bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
-  loadConstant(cUnit, rARG0, arg0);
-  oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
+/*
+ * To save scheduling time, helper calls are broken into two parts: generation of
+ * the helper target address, and the actuall call to the helper.  Because x86
+ * has a memory call operation, part 1 is a NOP for x86.  For other targets,
+ * load arguments between the two parts.
+ */
+int callHelperSetup(CompilationUnit* cUnit, int helperOffset)
+{
+  return (cUnit->instructionSet == kX86) ? 0 : loadHelper(cUnit, helperOffset);
+}
+
+/* NOTE: if rTgt is a temp, it will be freed following use */
+LIR* callHelper(CompilationUnit* cUnit, int rTgt, int helperOffset, bool safepointPC)
+{
+  LIR* callInst;
+  if (cUnit->instructionSet == kX86) {
+    callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
+  } else {
+    callInst = opReg(cUnit, kOpBlx, rTgt);
+    oatFreeTemp(cUnit, rTgt);
+  }
   if (safepointPC) {
     markSafepointPC(cUnit, callInst);
   }
+  return callInst;
+}
+
+void callRuntimeHelperImm(CompilationUnit* cUnit, int helperOffset, int arg0, bool safepointPC) {
+  int rTgt = callHelperSetup(cUnit, helperOffset);
+  loadConstant(cUnit, rARG0, arg0);
+  oatClobberCalleeSave(cUnit);
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperReg(CompilationUnit* cUnit, int helperOffset, int arg0, bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   opRegCopy(cUnit, rARG0, arg0);
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperRegLocation(CompilationUnit* cUnit, int helperOffset, RegLocation arg0,
                                   bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   if (arg0.wide == 0) {
     loadValueDirectFixed(cUnit, arg0, rARG0);
   } else {
     loadValueDirectWideFixed(cUnit, arg0, rARG0, rARG1);
   }
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperImmImm(CompilationUnit* cUnit, int helperOffset, int arg0, int arg1,
                              bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   loadConstant(cUnit, rARG0, arg0);
   loadConstant(cUnit, rARG1, arg1);
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperImmRegLocation(CompilationUnit* cUnit, int helperOffset, int arg0,
                                      RegLocation arg1, bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   if (arg1.wide == 0) {
     loadValueDirectFixed(cUnit, arg1, rARG1);
   } else {
@@ -124,111 +106,61 @@
   }
   loadConstant(cUnit, rARG0, arg0);
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperRegLocationImm(CompilationUnit* cUnit, int helperOffset, RegLocation arg0,
                                      int arg1, bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   loadValueDirectFixed(cUnit, arg0, rARG0);
   loadConstant(cUnit, rARG1, arg1);
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperImmReg(CompilationUnit* cUnit, int helperOffset, int arg0, int arg1,
                              bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   opRegCopy(cUnit, rARG1, arg1);
   loadConstant(cUnit, rARG0, arg0);
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperRegImm(CompilationUnit* cUnit, int helperOffset, int arg0, int arg1,
                              bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   opRegCopy(cUnit, rARG0, arg0);
   loadConstant(cUnit, rARG1, arg1);
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperImmMethod(CompilationUnit* cUnit, int helperOffset, int arg0, bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   loadCurrMethodDirect(cUnit, rARG1);
   loadConstant(cUnit, rARG0, arg0);
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperRegLocationRegLocation(CompilationUnit* cUnit, int helperOffset,
                                              RegLocation arg0, RegLocation arg1, bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   if (arg0.wide == 0) {
     loadValueDirectFixed(cUnit, arg0, arg0.fp ? rFARG0 : rARG0);
     if (arg1.wide == 0) {
-#if defined(TARGET_MIPS)
-      loadValueDirectFixed(cUnit, arg1, arg1.fp ? rFARG2 : rARG1);
-#else
-      loadValueDirectFixed(cUnit, arg1, rARG1);
-#endif
+      if (cUnit->instructionSet == kMips) {
+        loadValueDirectFixed(cUnit, arg1, arg1.fp ? rFARG2 : rARG1);
+      } else {
+        loadValueDirectFixed(cUnit, arg1, rARG1);
+      }
     } else {
-#if defined(TARGET_MIPS)
-      loadValueDirectWideFixed(cUnit, arg1, arg1.fp ? rFARG2 : rARG1, arg1.fp ? rFARG3 : rARG2);
-#else
-      loadValueDirectWideFixed(cUnit, arg1, rARG1, rARG2);
-#endif
+      if (cUnit->instructionSet == kMips) {
+        loadValueDirectWideFixed(cUnit, arg1, arg1.fp ? rFARG2 : rARG1, arg1.fp ? rFARG3 : rARG2);
+      } else {
+        loadValueDirectWideFixed(cUnit, arg1, rARG1, rARG2);
+      }
     }
   } else {
     loadValueDirectWideFixed(cUnit, arg0, arg0.fp ? rFARG0 : rARG0, arg0.fp ? rFARG1 : rARG1);
@@ -239,104 +171,54 @@
     }
   }
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperRegReg(CompilationUnit* cUnit, int helperOffset, int arg0, int arg1,
                              bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   DCHECK_NE((int)rARG0, arg1);  // check copy into arg0 won't clobber arg1
   opRegCopy(cUnit, rARG0, arg0);
   opRegCopy(cUnit, rARG1, arg1);
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperRegRegImm(CompilationUnit* cUnit, int helperOffset, int arg0, int arg1,
                                 int arg2, bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   DCHECK_NE((int)rARG0, arg1);  // check copy into arg0 won't clobber arg1
   opRegCopy(cUnit, rARG0, arg0);
   opRegCopy(cUnit, rARG1, arg1);
   loadConstant(cUnit, rARG2, arg2);
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperImmMethodRegLocation(CompilationUnit* cUnit, int helperOffset, int arg0,
                                            RegLocation arg2, bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   loadValueDirectFixed(cUnit, arg2, rARG2);
   loadCurrMethodDirect(cUnit, rARG1);
   loadConstant(cUnit, rARG0, arg0);
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperImmMethodImm(CompilationUnit* cUnit, int helperOffset, int arg0, int arg2,
                                    bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   loadCurrMethodDirect(cUnit, rARG1);
   loadConstant(cUnit, rARG2, arg2);
   loadConstant(cUnit, rARG0, arg0);
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 void callRuntimeHelperImmRegLocationRegLocation(CompilationUnit* cUnit, int helperOffset,
                                                 int arg0, RegLocation arg1, RegLocation arg2,
                                                 bool safepointPC) {
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, helperOffset);
-#endif
+  int rTgt = callHelperSetup(cUnit, helperOffset);
   loadValueDirectFixed(cUnit, arg1, rARG1);
   if (arg2.wide == 0) {
     loadValueDirectFixed(cUnit, arg2, rARG2);
@@ -345,15 +227,7 @@
   }
   loadConstant(cUnit, rARG0, arg0);
   oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  oatFreeTemp(cUnit, rTgt);
-#else
-  LIR* callInst = opThreadMem(cUnit, kOpBlx, helperOffset);
-#endif
-  if (safepointPC) {
-    markSafepointPC(cUnit, callInst);
-  }
+  callHelper(cUnit, rTgt, helperOffset, safepointPC);
 }
 
 /*
@@ -378,10 +252,10 @@
 
 // FIXME: need to do some work to split out targets with
 // condition codes and those without
-#if defined(TARGET_ARM) || defined(TARGET_X86)
 LIR* genCheck(CompilationUnit* cUnit, ConditionCode cCode,
               ThrowKind kind)
 {
+  DCHECK_NE(cUnit->instructionSet, kMips);
   LIR* tgt = rawLIR(cUnit, 0, kPseudoThrowTarget, kind,
                     cUnit->currentDalvikOffset);
   LIR* branch = opCondBranch(cUnit, cCode, tgt);
@@ -389,7 +263,6 @@
   oatInsertGrowableList(cUnit, &cUnit->throwLaunchpads, (intptr_t)tgt);
   return branch;
 }
-#endif
 
 LIR* genImmedCheck(CompilationUnit* cUnit, ConditionCode cCode,
                    int reg, int immVal, ThrowKind kind)
@@ -423,12 +296,7 @@
 {
   LIR* tgt = rawLIR(cUnit, 0, kPseudoThrowTarget, kind,
                     cUnit->currentDalvikOffset, reg1, reg2);
-#if defined(TARGET_MIPS)
   LIR* branch = opCmpBranch(cUnit, cCode, reg1, reg2, tgt);
-#else
-  opRegReg(cUnit, kOpCmp, reg1, reg2);
-  LIR* branch = opCondBranch(cUnit, cCode, tgt);
-#endif
   // Remember branch target - will process later
   oatInsertGrowableList(cUnit, &cUnit->throwLaunchpads, (intptr_t)tgt);
   return branch;
@@ -464,12 +332,7 @@
       cond = (ConditionCode)0;
       LOG(FATAL) << "Unexpected opcode " << (int)opcode;
   }
-#if defined(TARGET_MIPS)
   opCmpBranch(cUnit, cond, rlSrc1.lowReg, rlSrc2.lowReg, taken);
-#else
-  opRegReg(cUnit, kOpCmp, rlSrc1.lowReg, rlSrc2.lowReg);
-  opCondBranch(cUnit, cond, taken);
-#endif
   opUnconditionalBranch(cUnit, fallThrough);
 }
 
@@ -501,12 +364,12 @@
       cond = (ConditionCode)0;
       LOG(FATAL) << "Unexpected opcode " << (int)opcode;
   }
-#if defined(TARGET_MIPS) || defined(TARGET_X86)
-  opCmpImmBranch(cUnit, cond, rlSrc.lowReg, 0, taken);
-#else
-  opRegImm(cUnit, kOpCmp, rlSrc.lowReg, 0);
-  opCondBranch(cUnit, cond, taken);
-#endif
+  if (cUnit->instructionSet == kThumb2) {
+    opRegImm(cUnit, kOpCmp, rlSrc.lowReg, 0);
+    opCondBranch(cUnit, cond, taken);
+  } else {
+    opCmpImmBranch(cUnit, cond, rlSrc.lowReg, 0, taken);
+  }
   opUnconditionalBranch(cUnit, fallThrough);
 }
 
@@ -628,14 +491,20 @@
     int rSrc = oatAllocTemp(cUnit);
     int rDst = oatAllocTemp(cUnit);
     int rIdx = oatAllocTemp(cUnit);
-#if defined(TARGET_ARM)
-    int rVal = rLR;  // Using a lot of temps, rLR is known free here
-#elif defined(TARGET_X86)
-    oatFreeTemp(cUnit, rRET0);
-    int rVal = oatAllocTemp(cUnit);
-#else
-    int rVal = oatAllocTemp(cUnit);
-#endif
+    int rVal = INVALID_REG;
+    switch(cUnit->instructionSet) {
+      case kThumb2:
+        rVal = rLR;
+        break;
+      case kX86:
+        oatFreeTemp(cUnit, rRET0);
+        rVal = oatAllocTemp(cUnit);
+        break;
+      case kMips:
+        rVal = oatAllocTemp(cUnit);
+        break;
+      default: LOG(FATAL) << "Unexpected instruction set: " << cUnit->instructionSet;
+    }
     // Set up source pointer
     RegLocation rlFirst = info->args[0];
     opRegRegImm(cUnit, kOpAdd, rSrc, rSP,
@@ -650,20 +519,12 @@
     // Copy next element
     loadBaseIndexed(cUnit, rSrc, rIdx, rVal, 2, kWord);
     storeBaseIndexed(cUnit, rDst, rIdx, rVal, 2, kWord);
-#if defined(TARGET_ARM)
-    // Combine sub & test using sub setflags encoding here
-    newLIR3(cUnit, kThumb2SubsRRI12, rIdx, rIdx, 1);
-    opCondBranch(cUnit, kCondGe, target);
-#else
     oatFreeTemp(cUnit, rVal);
-    opRegImm(cUnit, kOpSub, rIdx, 1);
-    opCmpImmBranch(cUnit, kCondGe, rIdx, 0, target);
-#endif
-#if defined(TARGET_X86)
-    // Restore the target pointer
-    opRegRegImm(cUnit, kOpAdd, rRET0, rDst,
-                -Array::DataOffset(component_size).Int32Value());
-#endif
+    opDecAndBranch(cUnit, kCondGe, rIdx, target);
+    if (cUnit->instructionSet == kX86) {
+      // Restore the target pointer
+      opRegRegImm(cUnit, kOpAdd, rRET0, rDst, -Array::DataOffset(component_size).Int32Value());
+    }
   } else if (!info->isRange) {
     // TUNING: interleave
     for (int i = 0; i < elems; i++) {
@@ -735,10 +596,10 @@
       LIR* branchOver = opCmpImmBranch(cUnit, kCondNe, rBase, 0, NULL);
       loadConstant(cUnit, rARG0, ssbIndex);
       callRuntimeHelperImm(cUnit, ENTRYPOINT_OFFSET(pInitializeStaticStorage), ssbIndex, true);
-#if defined(TARGET_MIPS)
-      // For Arm, rRET0 = rARG0 = rBASE, for Mips, we need to copy
-      opRegCopy(cUnit, rBase, rRET0);
-#endif
+      if (cUnit->instructionSet == kMips) {
+        // For Arm, rRET0 = rARG0 = rBASE, for Mips, we need to copy
+        opRegCopy(cUnit, rBase, rRET0);
+      }
       LIR* skipTarget = newLIR0(cUnit, kPseudoTargetLabel);
       branchOver->target = (LIR*)skipTarget;
       oatFreeTemp(cUnit, rMethod);
@@ -826,10 +687,10 @@
       // TUNING: fast path should fall through
       LIR* branchOver = opCmpImmBranch(cUnit, kCondNe, rBase, 0, NULL);
       callRuntimeHelperImm(cUnit, ENTRYPOINT_OFFSET(pInitializeStaticStorage), ssbIndex, true);
-#if defined(TARGET_MIPS)
-      // For Arm, rRET0 = rARG0 = rBASE, for Mips, we need to copy
-      opRegCopy(cUnit, rBase, rRET0);
-#endif
+      if (cUnit->instructionSet == kMips) {
+        // For Arm, rRET0 = rARG0 = rBASE, for Mips, we need to copy
+        opRegCopy(cUnit, rBase, rRET0);
+      }
       LIR* skipTarget = newLIR0(cUnit, kPseudoTargetLabel);
       branchOver->target = (LIR*)skipTarget;
       oatFreeTemp(cUnit, rMethod);
@@ -871,20 +732,18 @@
 // Debugging routine - if null target, branch to DebugMe
 void genShowTarget(CompilationUnit* cUnit)
 {
-#if defined(TARGET_X86)
-  UNIMPLEMENTED(WARNING) << "genShowTarget";
-#else
+  DCHECK_NE(cUnit->instructionSet, kX86) << "unimplemented genShowTarget";
   LIR* branchOver = opCmpImmBranch(cUnit, kCondNe, rINVOKE_TGT, 0, NULL);
   loadWordDisp(cUnit, rSELF, ENTRYPOINT_OFFSET(pDebugMe), rINVOKE_TGT);
   LIR* target = newLIR0(cUnit, kPseudoTargetLabel);
   branchOver->target = (LIR*)target;
-#endif
 }
 
 void handleSuspendLaunchpads(CompilationUnit *cUnit)
 {
   LIR** suspendLabel = (LIR **)cUnit->suspendLaunchpads.elemList;
   int numElems = cUnit->suspendLaunchpads.numUsed;
+  int helperOffset = ENTRYPOINT_OFFSET(pTestSuspendFromCode);
   for (int i = 0; i < numElems; i++) {
     oatResetRegPool(cUnit);
     oatResetDefTracking(cUnit);
@@ -892,13 +751,8 @@
     LIR* resumeLab = (LIR*)lab->operands[0];
     cUnit->currentDalvikOffset = lab->operands[1];
     oatAppendLIR(cUnit, lab);
-#if defined(TARGET_X86)
-    LIR* callInst = opThreadMem(cUnit, kOpBlx, ENTRYPOINT_OFFSET(pTestSuspendFromCode));
-#else
-    int rTgt = loadHelper(cUnit, ENTRYPOINT_OFFSET(pTestSuspendFromCode));
-    LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-#endif
-    markSafepointPC(cUnit, callInst);
+    int rTgt = callHelperSetup(cUnit, helperOffset);
+    callHelper(cUnit, rTgt, helperOffset, true /* markSafepointPC */);
     opUnconditionalBranch(cUnit, resumeLab);
   }
 }
@@ -936,6 +790,7 @@
     int funcOffset = 0;
     int v1 = lab->operands[2];
     int v2 = lab->operands[3];
+    bool targetX86 = (cUnit->instructionSet == kX86);
     switch (lab->operands[0]) {
       case kThrowNullPointer:
         funcOffset = ENTRYPOINT_OFFSET(pThrowNullPointerFromCode);
@@ -944,30 +799,30 @@
         // Move v1 (array index) to rARG0 and v2 (array length) to rARG1
         if (v2 != rARG0) {
           opRegCopy(cUnit, rARG0, v1);
-#if defined (TARGET_X86)
-          // x86 leaves the array pointer in v2, so load the array length that the handler expects
-          opRegMem(cUnit, kOpMov, rARG1, v2, Array::LengthOffset().Int32Value());
-#else
-          opRegCopy(cUnit, rARG1, v2);
-#endif
+          if (targetX86) {
+            // x86 leaves the array pointer in v2, so load the array length that the handler expects
+            opRegMem(cUnit, kOpMov, rARG1, v2, Array::LengthOffset().Int32Value());
+          } else {
+            opRegCopy(cUnit, rARG1, v2);
+          }
         } else {
           if (v1 == rARG1) {
             // Swap v1 and v2, using rARG2 as a temp
             opRegCopy(cUnit, rARG2, v1);
-#if defined (TARGET_X86)
-            // x86 leaves the array pointer in v2, so load the array length that the handler expects
-            opRegMem(cUnit, kOpMov, rARG1, v2, Array::LengthOffset().Int32Value());
-#else
-            opRegCopy(cUnit, rARG1, v2);
-#endif
+            if (targetX86) {
+              // x86 leaves the array pointer in v2; load the array length that the handler expects
+              opRegMem(cUnit, kOpMov, rARG1, v2, Array::LengthOffset().Int32Value());
+            } else {
+              opRegCopy(cUnit, rARG1, v2);
+            }
             opRegCopy(cUnit, rARG0, rARG2);
           } else {
-#if defined (TARGET_X86)
-            // x86 leaves the array pointer in v2, so load the array length that the handler expects
-            opRegMem(cUnit, kOpMov, rARG1, v2, Array::LengthOffset().Int32Value());
-#else
-            opRegCopy(cUnit, rARG1, v2);
-#endif
+            if (targetX86) {
+              // x86 leaves the array pointer in v2; load the array length that the handler expects
+              opRegMem(cUnit, kOpMov, rARG1, v2, Array::LengthOffset().Int32Value());
+            } else {
+              opRegCopy(cUnit, rARG1, v2);
+            }
             opRegCopy(cUnit, rARG0, v1);
           }
         }
@@ -984,32 +839,25 @@
       case kThrowStackOverflow:
         funcOffset = ENTRYPOINT_OFFSET(pThrowStackOverflowFromCode);
         // Restore stack alignment
-#if !defined(TARGET_X86)
-        opRegImm(cUnit, kOpAdd, rSP,
-                 (cUnit->numCoreSpills + cUnit->numFPSpills) * 4);
-#else
-        opRegImm(cUnit, kOpAdd, rSP, cUnit->frameSize);
-#endif
+        if (targetX86) {
+          opRegImm(cUnit, kOpAdd, rSP, cUnit->frameSize);
+        } else {
+          opRegImm(cUnit, kOpAdd, rSP, (cUnit->numCoreSpills + cUnit->numFPSpills) * 4);
+        }
         break;
       default:
         LOG(FATAL) << "Unexpected throw kind: " << lab->operands[0];
     }
     oatClobberCalleeSave(cUnit);
-#if !defined(TARGET_X86)
-    int rTgt = loadHelper(cUnit, funcOffset);
-    LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-    oatFreeTemp(cUnit, rTgt);
-#else
-    LIR* callInst = opThreadMem(cUnit, kOpBlx, funcOffset);
-#endif
-    markSafepointPC(cUnit, callInst);
+    int rTgt = callHelperSetup(cUnit, funcOffset);
+    callHelper(cUnit, rTgt, funcOffset, true /* markSafepointPC */);
   }
 }
 
 /* Needed by the Assembler */
-void oatSetupResourceMasks(LIR* lir)
+void oatSetupResourceMasks(CompilationUnit* cUnit, LIR* lir)
 {
-  setupResourceMasks(lir);
+  setupResourceMasks(cUnit, lir);
 }
 
 bool fastInstance(CompilationUnit* cUnit,  uint32_t fieldIdx,
@@ -1040,24 +888,24 @@
     if (isLongOrDouble) {
       DCHECK(rlDest.wide);
       genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, optFlags);
-#if defined(TARGET_X86)
-      rlResult = oatEvalLoc(cUnit, rlDest, regClass, true);
-      genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, optFlags);
-      loadBaseDispWide(cUnit, rlObj.lowReg, fieldOffset, rlResult.lowReg,
-                       rlResult.highReg, rlObj.sRegLow);
-      if (isVolatile) {
-        oatGenMemBarrier(cUnit, kSY);
+      if (cUnit->instructionSet == kX86) {
+        rlResult = oatEvalLoc(cUnit, rlDest, regClass, true);
+        genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, optFlags);
+        loadBaseDispWide(cUnit, rlObj.lowReg, fieldOffset, rlResult.lowReg,
+                         rlResult.highReg, rlObj.sRegLow);
+        if (isVolatile) {
+          oatGenMemBarrier(cUnit, kSY);
+        }
+      } else {
+        int regPtr = oatAllocTemp(cUnit);
+        opRegRegImm(cUnit, kOpAdd, regPtr, rlObj.lowReg, fieldOffset);
+        rlResult = oatEvalLoc(cUnit, rlDest, regClass, true);
+        loadPair(cUnit, regPtr, rlResult.lowReg, rlResult.highReg);
+        if (isVolatile) {
+          oatGenMemBarrier(cUnit, kSY);
+        }
+        oatFreeTemp(cUnit, regPtr);
       }
-#else
-      int regPtr = oatAllocTemp(cUnit);
-      opRegRegImm(cUnit, kOpAdd, regPtr, rlObj.lowReg, fieldOffset);
-      rlResult = oatEvalLoc(cUnit, rlDest, regClass, true);
-      loadPair(cUnit, regPtr, rlResult.lowReg, rlResult.highReg);
-      if (isVolatile) {
-        oatGenMemBarrier(cUnit, kSY);
-      }
-      oatFreeTemp(cUnit, regPtr);
-#endif
       storeValueWide(cUnit, rlDest, rlResult);
     } else {
       rlResult = oatEvalLoc(cUnit, rlDest, regClass, true);
@@ -1207,33 +1055,32 @@
     loadWordDisp(cUnit, rARG2,
                  AbstractMethod::DexCacheStringsOffset().Int32Value(), rARG0);
     // Might call out to helper, which will return resolved string in rRET0
-#if !defined(TARGET_X86)
-    int rTgt = loadHelper(cUnit, ENTRYPOINT_OFFSET(pResolveStringFromCode));
-#endif
+    int rTgt = callHelperSetup(cUnit, ENTRYPOINT_OFFSET(pResolveStringFromCode));
     loadWordDisp(cUnit, rARG0, offset_of_string, rRET0);
     loadConstant(cUnit, rARG1, string_idx);
-#if defined(TARGET_ARM)
-    opRegImm(cUnit, kOpCmp, rRET0, 0);  // Is resolved?
-    genBarrier(cUnit);
-    // For testing, always force through helper
-    if (!EXERCISE_SLOWEST_STRING_PATH) {
-      opIT(cUnit, kArmCondEq, "T");
+    if (cUnit->instructionSet == kThumb2) {
+      opRegImm(cUnit, kOpCmp, rRET0, 0);  // Is resolved?
+      genBarrier(cUnit);
+      // For testing, always force through helper
+      if (!EXERCISE_SLOWEST_STRING_PATH) {
+        opIT(cUnit, kArmCondEq, "T");
+      }
+      opRegCopy(cUnit, rARG0, rARG2);   // .eq
+      LIR* callInst = opReg(cUnit, kOpBlx, rTgt);    // .eq, helper(Method*, string_idx)
+      markSafepointPC(cUnit, callInst);
+      oatFreeTemp(cUnit, rTgt);
+    } else if (cUnit->instructionSet == kMips) {
+      LIR* branch = opCmpImmBranch(cUnit, kCondNe, rRET0, 0, NULL);
+      opRegCopy(cUnit, rARG0, rARG2);   // .eq
+      LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
+      markSafepointPC(cUnit, callInst);
+      oatFreeTemp(cUnit, rTgt);
+      LIR* target = newLIR0(cUnit, kPseudoTargetLabel);
+      branch->target = target;
+    } else {
+      DCHECK_EQ(cUnit->instructionSet, kX86);
+      callRuntimeHelperRegReg(cUnit, ENTRYPOINT_OFFSET(pResolveStringFromCode), rARG2, rARG1, true);
     }
-    opRegCopy(cUnit, rARG0, rARG2);   // .eq
-    LIR* callInst = opReg(cUnit, kOpBlx, rTgt);    // .eq, helper(Method*, string_idx)
-    markSafepointPC(cUnit, callInst);
-    oatFreeTemp(cUnit, rTgt);
-#elif defined(TARGET_MIPS)
-    LIR* branch = opCmpImmBranch(cUnit, kCondNe, rRET0, 0, NULL);
-    opRegCopy(cUnit, rARG0, rARG2);   // .eq
-    LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-    markSafepointPC(cUnit, callInst);
-    oatFreeTemp(cUnit, rTgt);
-    LIR* target = newLIR0(cUnit, kPseudoTargetLabel);
-    branch->target = target;
-#else
-    callRuntimeHelperRegReg(cUnit, ENTRYPOINT_OFFSET(pResolveStringFromCode), rARG2, rARG1, true);
-#endif
     genBarrier(cUnit);
     storeValue(cUnit, rlDest, oatGetReturn(cUnit, false));
   } else {
@@ -1272,12 +1119,12 @@
 {
   oatFlushAllRegs(cUnit);  /* Everything to home location */
   int funcOffset = ENTRYPOINT_OFFSET(pGetAndClearException);
-#if defined(TARGET_X86)
-  // Runtime helper will load argument for x86.
-  callRuntimeHelperReg(cUnit, funcOffset, rARG0, false);
-#else
-  callRuntimeHelperReg(cUnit, funcOffset, rSELF, false);
-#endif
+  if (cUnit->instructionSet == kX86) {
+    // Runtime helper will load argument for x86.
+    callRuntimeHelperReg(cUnit, funcOffset, rARG0, false);
+  } else {
+    callRuntimeHelperReg(cUnit, funcOffset, rSELF, false);
+  }
   RegLocation rlResult = oatGetReturn(cUnit, false);
   storeValue(cUnit, rlDest, rlResult);
 }
@@ -1330,49 +1177,48 @@
   }
   /* rARG0 is ref, rARG2 is class. If ref==null, use directly as bool result */
   RegLocation rlResult = oatGetReturn(cUnit, false);
-#if defined(TARGET_MIPS)
-  opRegCopy(cUnit, rlResult.lowReg, r_ZERO);    // store false result for if branch is taken
-#endif
+  if (cUnit->instructionSet == kMips) {
+    loadConstant(cUnit, rlResult.lowReg, 0);  // store false result for if branch is taken
+  }
   LIR* branch1 = opCmpImmBranch(cUnit, kCondEq, rARG0, 0, NULL);
   /* load object->klass_ */
   DCHECK_EQ(Object::ClassOffset().Int32Value(), 0);
   loadWordDisp(cUnit, rARG0,  Object::ClassOffset().Int32Value(), rARG1);
   /* rARG0 is ref, rARG1 is ref->klass_, rARG2 is class */
   LIR* callInst;
-#if defined(TARGET_ARM)
-  /* Uses conditional nullification */
-  int rTgt = loadHelper(cUnit,
-                        ENTRYPOINT_OFFSET(pInstanceofNonTrivialFromCode));
-  opRegReg(cUnit, kOpCmp, rARG1, rARG2);  // Same?
-  opIT(cUnit, kArmCondEq, "EE");   // if-convert the test
-  loadConstant(cUnit, rARG0, 1);     // .eq case - load true
-  opRegCopy(cUnit, rARG0, rARG2);    // .ne case - arg0 <= class
-  callInst = opReg(cUnit, kOpBlx, rTgt);    // .ne case: helper(class, ref->class)
-  oatFreeTemp(cUnit, rTgt);
-#else
-  /* Uses branchovers */
-  loadConstant(cUnit, rlResult.lowReg, 1);     // assume true
-  LIR* branchover = opCmpBranch(cUnit, kCondEq, rARG1, rARG2, NULL);
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit,
-                        ENTRYPOINT_OFFSET(pInstanceofNonTrivialFromCode));
-  opRegCopy(cUnit, rARG0, rARG2);    // .ne case - arg0 <= class
-  callInst = opReg(cUnit, kOpBlx, rTgt);    // .ne case: helper(class, ref->class)
-  oatFreeTemp(cUnit, rTgt);
-#else
-  opRegCopy(cUnit, rARG0, rARG2);
-  callInst = opThreadMem(cUnit, kOpBlx, ENTRYPOINT_OFFSET(pInstanceofNonTrivialFromCode));
-#endif
-#endif
+  LIR* branchover = NULL;
+  if (cUnit->instructionSet == kThumb2) {
+    /* Uses conditional nullification */
+    int rTgt = loadHelper(cUnit, ENTRYPOINT_OFFSET(pInstanceofNonTrivialFromCode));
+    opRegReg(cUnit, kOpCmp, rARG1, rARG2);  // Same?
+    opIT(cUnit, kArmCondEq, "EE");   // if-convert the test
+    loadConstant(cUnit, rARG0, 1);     // .eq case - load true
+    opRegCopy(cUnit, rARG0, rARG2);    // .ne case - arg0 <= class
+    callInst = opReg(cUnit, kOpBlx, rTgt);    // .ne case: helper(class, ref->class)
+    oatFreeTemp(cUnit, rTgt);
+  } else {
+    /* Uses branchovers */
+    loadConstant(cUnit, rlResult.lowReg, 1);     // assume true
+    branchover = opCmpBranch(cUnit, kCondEq, rARG1, rARG2, NULL);
+    if (cUnit->instructionSet != kX86) {
+      int rTgt = loadHelper(cUnit, ENTRYPOINT_OFFSET(pInstanceofNonTrivialFromCode));
+      opRegCopy(cUnit, rARG0, rARG2);    // .ne case - arg0 <= class
+      callInst = opReg(cUnit, kOpBlx, rTgt);    // .ne case: helper(class, ref->class)
+      oatFreeTemp(cUnit, rTgt);
+    } else {
+      opRegCopy(cUnit, rARG0, rARG2);
+      callInst = opThreadMem(cUnit, kOpBlx, ENTRYPOINT_OFFSET(pInstanceofNonTrivialFromCode));
+    }
+  }
   markSafepointPC(cUnit, callInst);
   oatClobberCalleeSave(cUnit);
   /* branch targets here */
   LIR* target = newLIR0(cUnit, kPseudoTargetLabel);
   storeValue(cUnit, rlDest, rlResult);
   branch1->target = target;
-#if !defined(TARGET_ARM)
-  branchover->target = target;
-#endif
+  if (cUnit->instructionSet != kThumb2) {
+    branchover->target = target;
+  }
 }
 
 void genCheckCast(CompilationUnit* cUnit, uint32_t type_idx, RegLocation rlSrc)
@@ -1422,20 +1268,21 @@
   DCHECK_EQ(Object::ClassOffset().Int32Value(), 0);
   loadWordDisp(cUnit, rARG0,  Object::ClassOffset().Int32Value(), rARG1);
   /* rARG1 now contains object->klass_ */
-#if defined(TARGET_MIPS) || defined(TARGET_X86)
-  LIR* branch2 = opCmpBranch(cUnit, kCondEq, rARG1, classReg, NULL);
-  callRuntimeHelperRegReg(cUnit, ENTRYPOINT_OFFSET(pCheckCastFromCode), rARG1, rARG2, true);
-#else  // defined(TARGET_ARM)
-  int rTgt = loadHelper(cUnit, ENTRYPOINT_OFFSET(pCheckCastFromCode));
-  opRegReg(cUnit, kOpCmp, rARG1, classReg);
-  LIR* branch2 = opCondBranch(cUnit, kCondEq, NULL); /* If eq, trivial yes */
-  opRegCopy(cUnit, rARG0, rARG1);
-  opRegCopy(cUnit, rARG1, rARG2);
-  oatClobberCalleeSave(cUnit);
-  LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-  markSafepointPC(cUnit, callInst);
-  oatFreeTemp(cUnit, rTgt);
-#endif
+  LIR* branch2;
+  if (cUnit->instructionSet == kThumb2) {
+    int rTgt = loadHelper(cUnit, ENTRYPOINT_OFFSET(pCheckCastFromCode));
+    opRegReg(cUnit, kOpCmp, rARG1, classReg);
+    branch2 = opCondBranch(cUnit, kCondEq, NULL); /* If eq, trivial yes */
+    opRegCopy(cUnit, rARG0, rARG1);
+    opRegCopy(cUnit, rARG1, rARG2);
+    oatClobberCalleeSave(cUnit);
+    LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
+    markSafepointPC(cUnit, callInst);
+    oatFreeTemp(cUnit, rTgt);
+  } else {
+    branch2 = opCmpBranch(cUnit, kCondEq, rARG1, classReg, NULL);
+    callRuntimeHelperRegReg(cUnit, ENTRYPOINT_OFFSET(pCheckCastFromCode), rARG1, rARG2, true);
+  }
   /* branch target here */
   LIR* target = newLIR0(cUnit, kPseudoTargetLabel);
   branch1->target = target;
@@ -1483,31 +1330,31 @@
   LIR* target = newLIR0(cUnit, kPseudoTargetLabel);
   null_value_check->target = target;
 
-#if defined(TARGET_X86)
-  // make an extra temp available for card mark below
-  oatFreeTemp(cUnit, rARG1);
-  if (!(optFlags & MIR_IGNORE_RANGE_CHECK)) {
-    /* if (rlIndex >= [rlArray + lenOffset]) goto kThrowArrayBounds */
-    genRegMemCheck(cUnit, kCondUge, rIndex, rArray, lenOffset, kThrowArrayBounds);
+  if (cUnit->instructionSet == kX86) {
+    // make an extra temp available for card mark below
+    oatFreeTemp(cUnit, rARG1);
+    if (!(optFlags & MIR_IGNORE_RANGE_CHECK)) {
+      /* if (rlIndex >= [rlArray + lenOffset]) goto kThrowArrayBounds */
+      genRegMemCheck(cUnit, kCondUge, rIndex, rArray, lenOffset, kThrowArrayBounds);
+    }
+    storeBaseIndexedDisp(cUnit, rArray, rIndex, scale,
+                         dataOffset, rValue, INVALID_REG, kWord, INVALID_SREG);
+  } else {
+    bool needsRangeCheck = (!(optFlags & MIR_IGNORE_RANGE_CHECK));
+    int regLen = INVALID_REG;
+    if (needsRangeCheck) {
+      regLen = rARG1;
+      loadWordDisp(cUnit, rArray, lenOffset, regLen);  // Get len
+    }
+    /* rPtr -> array data */
+    int rPtr = oatAllocTemp(cUnit);
+    opRegRegImm(cUnit, kOpAdd, rPtr, rArray, dataOffset);
+    if (needsRangeCheck) {
+      genRegRegCheck(cUnit, kCondCs, rIndex, regLen, kThrowArrayBounds);
+    }
+    storeBaseIndexed(cUnit, rPtr, rIndex, rValue, scale, kWord);
+    oatFreeTemp(cUnit, rPtr);
   }
-  storeBaseIndexedDisp(cUnit, rArray, rIndex, scale,
-                       dataOffset, rValue, INVALID_REG, kWord, INVALID_SREG);
-#else
-  bool needsRangeCheck = (!(optFlags & MIR_IGNORE_RANGE_CHECK));
-  int regLen = INVALID_REG;
-  if (needsRangeCheck) {
-    regLen = rARG1;
-    loadWordDisp(cUnit, rArray, lenOffset, regLen);  // Get len
-  }
-  /* rPtr -> array data */
-  int rPtr = oatAllocTemp(cUnit);
-  opRegRegImm(cUnit, kOpAdd, rPtr, rArray, dataOffset);
-  if (needsRangeCheck) {
-    genRegRegCheck(cUnit, kCondCs, rIndex, regLen, kThrowArrayBounds);
-  }
-  storeBaseIndexed(cUnit, rPtr, rIndex, rValue, scale, kWord);
-  oatFreeTemp(cUnit, rPtr);
-#endif
   oatFreeTemp(cUnit, rIndex);
   markGCCard(cUnit, rValue, rArray);
 }
@@ -1535,80 +1382,79 @@
   /* null object? */
   genNullCheck(cUnit, rlArray.sRegLow, rlArray.lowReg, optFlags);
 
-#if defined(TARGET_X86)
-  if (!(optFlags & MIR_IGNORE_RANGE_CHECK)) {
-    /* if (rlIndex >= [rlArray + lenOffset]) goto kThrowArrayBounds */
-    genRegMemCheck(cUnit, kCondUge, rlIndex.lowReg, rlArray.lowReg,
-                   lenOffset, kThrowArrayBounds);
-  }
-  if ((size == kLong) || (size == kDouble)) {
-    int regAddr = oatAllocTemp(cUnit);
-    newLIR5(cUnit, kX86Lea32RA, regAddr, rlArray.lowReg, rlIndex.lowReg, scale, dataOffset);
-    oatFreeTemp(cUnit, rlArray.lowReg);
-    oatFreeTemp(cUnit, rlIndex.lowReg);
-    rlResult = oatEvalLoc(cUnit, rlDest, regClass, true);
-    loadBaseIndexedDisp(cUnit, regAddr, INVALID_REG, 0, 0, rlResult.lowReg,
-                        rlResult.highReg, size, INVALID_SREG);
-    storeValueWide(cUnit, rlDest, rlResult);
-  } else {
-    rlResult = oatEvalLoc(cUnit, rlDest, regClass, true);
-
-    loadBaseIndexedDisp(cUnit, rlArray.lowReg, rlIndex.lowReg, scale,
-                        dataOffset, rlResult.lowReg, INVALID_REG, size,
-                        INVALID_SREG);
-
-    storeValue(cUnit, rlDest, rlResult);
-  }
-#else
-  int regPtr = oatAllocTemp(cUnit);
-  bool needsRangeCheck = (!(optFlags & MIR_IGNORE_RANGE_CHECK));
-  int regLen = INVALID_REG;
-  if (needsRangeCheck) {
-    regLen = oatAllocTemp(cUnit);
-    /* Get len */
-    loadWordDisp(cUnit, rlArray.lowReg, lenOffset, regLen);
-  }
-  /* regPtr -> array data */
-  opRegRegImm(cUnit, kOpAdd, regPtr, rlArray.lowReg, dataOffset);
-  oatFreeTemp(cUnit, rlArray.lowReg);
-  if ((size == kLong) || (size == kDouble)) {
-    if (scale) {
-      int rNewIndex = oatAllocTemp(cUnit);
-      opRegRegImm(cUnit, kOpLsl, rNewIndex, rlIndex.lowReg, scale);
-      opRegReg(cUnit, kOpAdd, regPtr, rNewIndex);
-      oatFreeTemp(cUnit, rNewIndex);
+  if (cUnit->instructionSet == kX86) {
+    if (!(optFlags & MIR_IGNORE_RANGE_CHECK)) {
+      /* if (rlIndex >= [rlArray + lenOffset]) goto kThrowArrayBounds */
+      genRegMemCheck(cUnit, kCondUge, rlIndex.lowReg, rlArray.lowReg,
+                     lenOffset, kThrowArrayBounds);
+    }
+    if ((size == kLong) || (size == kDouble)) {
+      int regAddr = oatAllocTemp(cUnit);
+      opLea(cUnit, regAddr, rlArray.lowReg, rlIndex.lowReg, scale, dataOffset);
+      oatFreeTemp(cUnit, rlArray.lowReg);
+      oatFreeTemp(cUnit, rlIndex.lowReg);
+      rlResult = oatEvalLoc(cUnit, rlDest, regClass, true);
+      loadBaseIndexedDisp(cUnit, regAddr, INVALID_REG, 0, 0, rlResult.lowReg,
+                          rlResult.highReg, size, INVALID_SREG);
+      storeValueWide(cUnit, rlDest, rlResult);
     } else {
-      opRegReg(cUnit, kOpAdd, regPtr, rlIndex.lowReg);
-    }
-    oatFreeTemp(cUnit, rlIndex.lowReg);
-    rlResult = oatEvalLoc(cUnit, rlDest, regClass, true);
+      rlResult = oatEvalLoc(cUnit, rlDest, regClass, true);
 
-    if (needsRangeCheck) {
-      // TODO: change kCondCS to a more meaningful name, is the sense of
-      // carry-set/clear flipped?
-      genRegRegCheck(cUnit, kCondCs, rlIndex.lowReg, regLen, kThrowArrayBounds);
-      oatFreeTemp(cUnit, regLen);
-    }
-    loadPair(cUnit, regPtr, rlResult.lowReg, rlResult.highReg);
+      loadBaseIndexedDisp(cUnit, rlArray.lowReg, rlIndex.lowReg, scale,
+                          dataOffset, rlResult.lowReg, INVALID_REG, size,
+                          INVALID_SREG);
 
-    oatFreeTemp(cUnit, regPtr);
-    storeValueWide(cUnit, rlDest, rlResult);
+      storeValue(cUnit, rlDest, rlResult);
+    }
   } else {
-    rlResult = oatEvalLoc(cUnit, rlDest, regClass, true);
-
+    int regPtr = oatAllocTemp(cUnit);
+    bool needsRangeCheck = (!(optFlags & MIR_IGNORE_RANGE_CHECK));
+    int regLen = INVALID_REG;
     if (needsRangeCheck) {
-      // TODO: change kCondCS to a more meaningful name, is the sense of
-      // carry-set/clear flipped?
-      genRegRegCheck(cUnit, kCondCs, rlIndex.lowReg, regLen, kThrowArrayBounds);
-      oatFreeTemp(cUnit, regLen);
+      regLen = oatAllocTemp(cUnit);
+      /* Get len */
+      loadWordDisp(cUnit, rlArray.lowReg, lenOffset, regLen);
     }
-    loadBaseIndexed(cUnit, regPtr, rlIndex.lowReg, rlResult.lowReg,
-                    scale, size);
+    /* regPtr -> array data */
+    opRegRegImm(cUnit, kOpAdd, regPtr, rlArray.lowReg, dataOffset);
+    oatFreeTemp(cUnit, rlArray.lowReg);
+    if ((size == kLong) || (size == kDouble)) {
+      if (scale) {
+        int rNewIndex = oatAllocTemp(cUnit);
+        opRegRegImm(cUnit, kOpLsl, rNewIndex, rlIndex.lowReg, scale);
+        opRegReg(cUnit, kOpAdd, regPtr, rNewIndex);
+        oatFreeTemp(cUnit, rNewIndex);
+      } else {
+        opRegReg(cUnit, kOpAdd, regPtr, rlIndex.lowReg);
+      }
+      oatFreeTemp(cUnit, rlIndex.lowReg);
+      rlResult = oatEvalLoc(cUnit, rlDest, regClass, true);
 
-    oatFreeTemp(cUnit, regPtr);
-    storeValue(cUnit, rlDest, rlResult);
+      if (needsRangeCheck) {
+        // TODO: change kCondCS to a more meaningful name, is the sense of
+        // carry-set/clear flipped?
+        genRegRegCheck(cUnit, kCondCs, rlIndex.lowReg, regLen, kThrowArrayBounds);
+        oatFreeTemp(cUnit, regLen);
+      }
+      loadPair(cUnit, regPtr, rlResult.lowReg, rlResult.highReg);
+
+      oatFreeTemp(cUnit, regPtr);
+      storeValueWide(cUnit, rlDest, rlResult);
+    } else {
+      rlResult = oatEvalLoc(cUnit, rlDest, regClass, true);
+
+      if (needsRangeCheck) {
+        // TODO: change kCondCS to a more meaningful name, is the sense of
+        // carry-set/clear flipped?
+        genRegRegCheck(cUnit, kCondCs, rlIndex.lowReg, regLen, kThrowArrayBounds);
+        oatFreeTemp(cUnit, regLen);
+      }
+      loadBaseIndexed(cUnit, regPtr, rlIndex.lowReg, rlResult.lowReg, scale, size);
+
+      oatFreeTemp(cUnit, regPtr);
+      storeValue(cUnit, rlDest, rlResult);
+    }
   }
-#endif
 }
 
 /*
@@ -1631,85 +1477,82 @@
 
   rlArray = loadValue(cUnit, rlArray, kCoreReg);
   rlIndex = loadValue(cUnit, rlIndex, kCoreReg);
-#if !defined(TARGET_X86)
-  int regPtr;
-  if (oatIsTemp(cUnit, rlArray.lowReg)) {
-    oatClobber(cUnit, rlArray.lowReg);
-    regPtr = rlArray.lowReg;
-  } else {
-    regPtr = oatAllocTemp(cUnit);
-    opRegCopy(cUnit, regPtr, rlArray.lowReg);
+  int regPtr = INVALID_REG;
+  if (cUnit->instructionSet != kX86) {
+    if (oatIsTemp(cUnit, rlArray.lowReg)) {
+      oatClobber(cUnit, rlArray.lowReg);
+      regPtr = rlArray.lowReg;
+    } else {
+      regPtr = oatAllocTemp(cUnit);
+      opRegCopy(cUnit, regPtr, rlArray.lowReg);
+    }
   }
-#endif
 
   /* null object? */
   genNullCheck(cUnit, rlArray.sRegLow, rlArray.lowReg, optFlags);
 
-#if defined(TARGET_X86)
-  if (!(optFlags & MIR_IGNORE_RANGE_CHECK)) {
-    /* if (rlIndex >= [rlArray + lenOffset]) goto kThrowArrayBounds */
-    genRegMemCheck(cUnit, kCondUge, rlIndex.lowReg, rlArray.lowReg,
-                   lenOffset, kThrowArrayBounds);
-  }
-  if ((size == kLong) || (size == kDouble)) {
-    rlSrc = loadValueWide(cUnit, rlSrc, regClass);
-  } else {
-    rlSrc = loadValue(cUnit, rlSrc, regClass);
-  }
-  // If the src reg can't be byte accessed, move it to a temp first.
-  if ((size == kSignedByte || size == kUnsignedByte) && rlSrc.lowReg >= 4) {
-    int temp = oatAllocTemp(cUnit);
-    opRegCopy(cUnit, temp, rlSrc.lowReg);
-    storeBaseIndexedDisp(cUnit, rlArray.lowReg, rlIndex.lowReg, scale,
-                         dataOffset, temp, INVALID_REG, size,
-                         INVALID_SREG);
-  } else {
-    storeBaseIndexedDisp(cUnit, rlArray.lowReg, rlIndex.lowReg, scale,
-                         dataOffset, rlSrc.lowReg, rlSrc.highReg, size,
-                         INVALID_SREG);
-  }
-#else
-  bool needsRangeCheck = (!(optFlags & MIR_IGNORE_RANGE_CHECK));
-  int regLen = INVALID_REG;
-  if (needsRangeCheck) {
-    regLen = oatAllocTemp(cUnit);
-    //NOTE: max live temps(4) here.
-    /* Get len */
-    loadWordDisp(cUnit, rlArray.lowReg, lenOffset, regLen);
-  }
-  /* regPtr -> array data */
-  opRegImm(cUnit, kOpAdd, regPtr, dataOffset);
-  /* at this point, regPtr points to array, 2 live temps */
-  if ((size == kLong) || (size == kDouble)) {
-    //TUNING: specific wide routine that can handle fp regs
-    if (scale) {
-      int rNewIndex = oatAllocTemp(cUnit);
-      opRegRegImm(cUnit, kOpLsl, rNewIndex, rlIndex.lowReg, scale);
-      opRegReg(cUnit, kOpAdd, regPtr, rNewIndex);
-      oatFreeTemp(cUnit, rNewIndex);
+  if (cUnit->instructionSet == kX86) {
+    if (!(optFlags & MIR_IGNORE_RANGE_CHECK)) {
+      /* if (rlIndex >= [rlArray + lenOffset]) goto kThrowArrayBounds */
+      genRegMemCheck(cUnit, kCondUge, rlIndex.lowReg, rlArray.lowReg, lenOffset, kThrowArrayBounds);
+    }
+    if ((size == kLong) || (size == kDouble)) {
+      rlSrc = loadValueWide(cUnit, rlSrc, regClass);
     } else {
-      opRegReg(cUnit, kOpAdd, regPtr, rlIndex.lowReg);
+      rlSrc = loadValue(cUnit, rlSrc, regClass);
     }
-    rlSrc = loadValueWide(cUnit, rlSrc, regClass);
-
-    if (needsRangeCheck) {
-      genRegRegCheck(cUnit, kCondCs, rlIndex.lowReg, regLen, kThrowArrayBounds);
-      oatFreeTemp(cUnit, regLen);
+    // If the src reg can't be byte accessed, move it to a temp first.
+    if ((size == kSignedByte || size == kUnsignedByte) && rlSrc.lowReg >= 4) {
+      int temp = oatAllocTemp(cUnit);
+      opRegCopy(cUnit, temp, rlSrc.lowReg);
+      storeBaseIndexedDisp(cUnit, rlArray.lowReg, rlIndex.lowReg, scale, dataOffset, temp,
+                           INVALID_REG, size, INVALID_SREG);
+    } else {
+      storeBaseIndexedDisp(cUnit, rlArray.lowReg, rlIndex.lowReg, scale, dataOffset, rlSrc.lowReg,
+                           rlSrc.highReg, size, INVALID_SREG);
     }
-
-    storeBaseDispWide(cUnit, regPtr, 0, rlSrc.lowReg, rlSrc.highReg);
-
-    oatFreeTemp(cUnit, regPtr);
   } else {
-    rlSrc = loadValue(cUnit, rlSrc, regClass);
+    bool needsRangeCheck = (!(optFlags & MIR_IGNORE_RANGE_CHECK));
+    int regLen = INVALID_REG;
     if (needsRangeCheck) {
-      genRegRegCheck(cUnit, kCondCs, rlIndex.lowReg, regLen, kThrowArrayBounds);
-      oatFreeTemp(cUnit, regLen);
+      regLen = oatAllocTemp(cUnit);
+      //NOTE: max live temps(4) here.
+      /* Get len */
+      loadWordDisp(cUnit, rlArray.lowReg, lenOffset, regLen);
     }
-    storeBaseIndexed(cUnit, regPtr, rlIndex.lowReg, rlSrc.lowReg,
-                     scale, size);
+    /* regPtr -> array data */
+    opRegImm(cUnit, kOpAdd, regPtr, dataOffset);
+    /* at this point, regPtr points to array, 2 live temps */
+    if ((size == kLong) || (size == kDouble)) {
+      //TUNING: specific wide routine that can handle fp regs
+      if (scale) {
+        int rNewIndex = oatAllocTemp(cUnit);
+        opRegRegImm(cUnit, kOpLsl, rNewIndex, rlIndex.lowReg, scale);
+        opRegReg(cUnit, kOpAdd, regPtr, rNewIndex);
+        oatFreeTemp(cUnit, rNewIndex);
+      } else {
+        opRegReg(cUnit, kOpAdd, regPtr, rlIndex.lowReg);
+      }
+      rlSrc = loadValueWide(cUnit, rlSrc, regClass);
+
+      if (needsRangeCheck) {
+        genRegRegCheck(cUnit, kCondCs, rlIndex.lowReg, regLen, kThrowArrayBounds);
+        oatFreeTemp(cUnit, regLen);
+      }
+
+      storeBaseDispWide(cUnit, regPtr, 0, rlSrc.lowReg, rlSrc.highReg);
+
+      oatFreeTemp(cUnit, regPtr);
+    } else {
+      rlSrc = loadValue(cUnit, rlSrc, regClass);
+      if (needsRangeCheck) {
+        genRegRegCheck(cUnit, kCondCs, rlIndex.lowReg, regLen, kThrowArrayBounds);
+        oatFreeTemp(cUnit, regLen);
+      }
+      storeBaseIndexed(cUnit, regPtr, rlIndex.lowReg, rlSrc.lowReg,
+                       scale, size);
+    }
   }
-#endif
 }
 
 void genLong3Addr(CompilationUnit* cUnit, OpKind firstOp,
@@ -1717,18 +1560,18 @@
                   RegLocation rlSrc1, RegLocation rlSrc2)
 {
   RegLocation rlResult;
-#if defined(TARGET_ARM)
-  /*
-   * NOTE:  This is the one place in the code in which we might have
-   * as many as six live temporary registers.  There are 5 in the normal
-   * set for Arm.  Until we have spill capabilities, temporarily add
-   * lr to the temp set.  It is safe to do this locally, but note that
-   * lr is used explicitly elsewhere in the code generator and cannot
-   * normally be used as a general temp register.
-   */
-  oatMarkTemp(cUnit, rLR);   // Add lr to the temp pool
-  oatFreeTemp(cUnit, rLR);   // and make it available
-#endif
+  if (cUnit->instructionSet == kThumb2) {
+    /*
+     * NOTE:  This is the one place in the code in which we might have
+     * as many as six live temporary registers.  There are 5 in the normal
+     * set for Arm.  Until we have spill capabilities, temporarily add
+     * lr to the temp set.  It is safe to do this locally, but note that
+     * lr is used explicitly elsewhere in the code generator and cannot
+     * normally be used as a general temp register.
+     */
+    oatMarkTemp(cUnit, rLR);   // Add lr to the temp pool
+    oatFreeTemp(cUnit, rLR);   // and make it available
+  }
   rlSrc1 = loadValueWide(cUnit, rlSrc1, kCoreReg);
   rlSrc2 = loadValueWide(cUnit, rlSrc2, kCoreReg);
   rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
@@ -1754,10 +1597,10 @@
   freeRegLocTemps(cUnit, rlResult, rlSrc1);
   freeRegLocTemps(cUnit, rlResult, rlSrc2);
   storeValueWide(cUnit, rlDest, rlResult);
-#if defined(TARGET_ARM)
-  oatClobber(cUnit, rLR);
-  oatUnmarkTemp(cUnit, rLR);  // Remove lr from the temp pool
-#endif
+  if (cUnit->instructionSet == kThumb2) {
+    oatClobber(cUnit, rLR);
+    oatUnmarkTemp(cUnit, rLR);  // Remove lr from the temp pool
+  }
 }
 
 
@@ -1872,15 +1715,16 @@
       opRegReg(cUnit, op, rlResult.lowReg, rlSrc1.lowReg);
     } else {
       if (shiftOp) {
-#if !defined(TARGET_X86)
-        rlSrc2 = loadValue(cUnit, rlSrc2, kCoreReg);
-        int tReg = oatAllocTemp(cUnit);
-        opRegRegImm(cUnit, kOpAnd, tReg, rlSrc2.lowReg, 31);
-#else
-        // X86 doesn't require masking and must use ECX
-        loadValueDirectFixed(cUnit, rlSrc2, rCX);
-        int tReg = rCX;
-#endif
+        int tReg = INVALID_REG;
+        if (cUnit->instructionSet == kX86) {
+          // X86 doesn't require masking and must use ECX
+          tReg = rCOUNT;  // rCX
+          loadValueDirectFixed(cUnit, rlSrc2, tReg);
+        } else {
+          rlSrc2 = loadValue(cUnit, rlSrc2, kCoreReg);
+          tReg = oatAllocTemp(cUnit);
+          opRegRegImm(cUnit, kOpAnd, tReg, rlSrc2.lowReg, 31);
+        }
         rlSrc1 = loadValue(cUnit, rlSrc1, kCoreReg);
         rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
         opRegRegReg(cUnit, op, rlResult.lowReg, rlSrc1.lowReg, tReg);
@@ -1894,43 +1738,29 @@
     }
     storeValue(cUnit, rlDest, rlResult);
   } else {
-#if defined(TARGET_MIPS)
-    rlSrc1 = loadValue(cUnit, rlSrc1, kCoreReg);
-    rlSrc2 = loadValue(cUnit, rlSrc2, kCoreReg);
-    if (checkZero) {
-        genImmedCheck(cUnit, kCondEq, rlSrc2.lowReg, 0, kThrowDivZero);
-    }
-    newLIR4(cUnit, kMipsDiv, r_HI, r_LO, rlSrc1.lowReg, rlSrc2.lowReg);
-    rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
-    if (op == kOpDiv) {
-      newLIR2(cUnit, kMipsMflo, rlResult.lowReg, r_LO);
+    if (cUnit->instructionSet == kMips) {
+      rlSrc1 = loadValue(cUnit, rlSrc1, kCoreReg);
+      rlSrc2 = loadValue(cUnit, rlSrc2, kCoreReg);
+      if (checkZero) {
+          genImmedCheck(cUnit, kCondEq, rlSrc2.lowReg, 0, kThrowDivZero);
+      }
+      rlResult = genDivRem(cUnit, rlDest, rlSrc1.lowReg, rlSrc2.lowReg, op == kOpDiv);
     } else {
-      newLIR2(cUnit, kMipsMfhi, rlResult.lowReg, r_HI);
+      int funcOffset = ENTRYPOINT_OFFSET(pIdivmod);
+      oatFlushAllRegs(cUnit);   /* Send everything to home location */
+      loadValueDirectFixed(cUnit, rlSrc2, rARG1);
+      int rTgt = callHelperSetup(cUnit, funcOffset);
+      loadValueDirectFixed(cUnit, rlSrc1, rARG0);
+      if (checkZero) {
+        genImmedCheck(cUnit, kCondEq, rARG1, 0, kThrowDivZero);
+      }
+      // NOTE: callout here is not a safepoint
+      callHelper(cUnit, rTgt, funcOffset, false /* not a safepoint */ );
+      if (op == kOpDiv)
+        rlResult = oatGetReturn(cUnit, false);
+      else
+        rlResult = oatGetReturnAlt(cUnit);
     }
-#else
-    int funcOffset = ENTRYPOINT_OFFSET(pIdivmod);
-    RegLocation rlResult;
-    oatFlushAllRegs(cUnit);   /* Send everything to home location */
-    loadValueDirectFixed(cUnit, rlSrc2, rARG1);
-#if defined(TARGET_ARM)
-    int rTgt = loadHelper(cUnit, funcOffset);
-#endif
-    loadValueDirectFixed(cUnit, rlSrc1, rARG0);
-    if (checkZero) {
-      genImmedCheck(cUnit, kCondEq, rARG1, 0, kThrowDivZero);
-    }
-    // NOTE: callout here is not a safepoint
-#if defined(TARGET_ARM)
-    opReg(cUnit, kOpBlx, rTgt);
-    oatFreeTemp(cUnit, rTgt);
-#else
-    opThreadMem(cUnit, kOpBlx, funcOffset);
-#endif
-    if (op == kOpDiv)
-      rlResult = oatGetReturn(cUnit, false);
-    else
-      rlResult = oatGetReturnAlt(cUnit);
-#endif
     storeValue(cUnit, rlDest, rlResult);
   }
   return false;
@@ -1973,19 +1803,12 @@
 bool handleEasyDivide(CompilationUnit* cUnit, Instruction::Code dalvikOpcode,
             RegLocation rlSrc, RegLocation rlDest, int lit)
 {
-#if defined(TARGET_ARM)
-  // No divide instruction for Arm, so check for more special cases
-  if (lit < 2) {
+  if (lit < 2)
     return false;
-  }
-  if (!isPowerOfTwo(lit)) {
+  // No divide instruction for Arm, so check for more special cases
+  if ((cUnit->instructionSet == kThumb2) && !isPowerOfTwo(lit)) {
     return smallLiteralDivide(cUnit, dalvikOpcode, rlSrc, rlDest, lit);
   }
-#else
-  if (lit < 2 || !isPowerOfTwo(lit)) {
-    return false;
-  }
-#endif
   int k = lowestSetBit(lit);
   if (k >= 30) {
     // Avoid special cases.
@@ -2028,24 +1851,6 @@
   return true;
 }
 
-void genMultiplyByTwoBitMultiplier(CompilationUnit* cUnit, RegLocation rlSrc,
-                                   RegLocation rlResult, int lit,
-                                   int firstBit, int secondBit)
-{
-#if defined(TARGET_ARM)
-  opRegRegRegShift(cUnit, kOpAdd, rlResult.lowReg, rlSrc.lowReg, rlSrc.lowReg,
-                   encodeShift(kArmLsl, secondBit - firstBit));
-#else
-  int tReg = oatAllocTemp(cUnit);
-  opRegRegImm(cUnit, kOpLsl, tReg, rlSrc.lowReg, secondBit - firstBit);
-  opRegRegReg(cUnit, kOpAdd, rlResult.lowReg, rlSrc.lowReg, tReg);
-  oatFreeTemp(cUnit, tReg);
-#endif
-  if (firstBit != 0) {
-    opRegRegImm(cUnit, kOpLsl, rlResult.lowReg, rlResult.lowReg, firstBit);
-  }
-}
-
 // Returns true if it added instructions to 'cUnit' to multiply 'rlSrc' by 'lit'
 // and store the result in 'rlDest'.
 bool handleEasyMultiply(CompilationUnit* cUnit, RegLocation rlSrc,
@@ -2174,29 +1979,20 @@
       } else {
         isDiv = false;
       }
-#if defined(TARGET_MIPS)
-      rlSrc = loadValue(cUnit, rlSrc, kCoreReg);
-      int tReg = oatAllocTemp(cUnit);
-      newLIR3(cUnit, kMipsAddiu, tReg, r_ZERO, lit);
-      newLIR4(cUnit, kMipsDiv, r_HI, r_LO, rlSrc.lowReg, tReg);
-      rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
-      if (isDiv) {
-        newLIR2(cUnit, kMipsMflo, rlResult.lowReg, r_LO);
+      if (cUnit->instructionSet == kMips) {
+        rlSrc = loadValue(cUnit, rlSrc, kCoreReg);
+        rlResult = genDivRemLit(cUnit, rlDest, rlSrc.lowReg, lit, isDiv);
       } else {
-        newLIR2(cUnit, kMipsMfhi, rlResult.lowReg, r_HI);
+        oatFlushAllRegs(cUnit);   /* Everything to home location */
+        loadValueDirectFixed(cUnit, rlSrc, rARG0);
+        oatClobber(cUnit, rARG0);
+        int funcOffset = ENTRYPOINT_OFFSET(pIdivmod);
+        callRuntimeHelperRegImm(cUnit, funcOffset, rARG0, lit, false);
+        if (isDiv)
+          rlResult = oatGetReturn(cUnit, false);
+        else
+          rlResult = oatGetReturnAlt(cUnit);
       }
-      oatFreeTemp(cUnit, tReg);
-#else
-      oatFlushAllRegs(cUnit);   /* Everything to home location */
-      loadValueDirectFixed(cUnit, rlSrc, rARG0);
-      oatClobber(cUnit, rARG0);
-      int funcOffset = ENTRYPOINT_OFFSET(pIdivmod);
-      callRuntimeHelperRegImm(cUnit, funcOffset, rARG0, lit, false);
-      if (isDiv)
-        rlResult = oatGetReturn(cUnit, false);
-      else
-        rlResult = oatGetReturnAlt(cUnit);
-#endif
       storeValue(cUnit, rlDest, rlResult);
       return false;
       break;
@@ -2247,22 +2043,20 @@
       break;
     case Instruction::ADD_LONG:
     case Instruction::ADD_LONG_2ADDR:
-#if defined(TARGET_MIPS) || defined(TARGET_X86)
-      return genAddLong(cUnit, rlDest, rlSrc1, rlSrc2);
-#else
+      if (cUnit->instructionSet != kThumb2) {
+        return genAddLong(cUnit, rlDest, rlSrc1, rlSrc2);
+      }
       firstOp = kOpAdd;
       secondOp = kOpAdc;
       break;
-#endif
     case Instruction::SUB_LONG:
     case Instruction::SUB_LONG_2ADDR:
-#if defined(TARGET_MIPS) || defined(TARGET_X86)
-      return genSubLong(cUnit, rlDest, rlSrc1, rlSrc2);
-#else
+      if (cUnit->instructionSet != kThumb2) {
+        return genSubLong(cUnit, rlDest, rlSrc1, rlSrc2);
+      }
       firstOp = kOpSub;
       secondOp = kOpSbc;
       break;
-#endif
     case Instruction::MUL_LONG:
     case Instruction::MUL_LONG_2ADDR:
       callOut = true;
@@ -2281,40 +2075,33 @@
       callOut = true;
       checkZero = true;
       funcOffset = ENTRYPOINT_OFFSET(pLdivmod);
-#if defined(TARGET_ARM)
-      /* NOTE - result is in rARG2/rARG3 instead of rRET0/rRET1 */
-      retReg = rARG2;
-#else
-      retReg = rRET0;
-#endif
+      /* NOTE - for Arm, result is in rARG2/rARG3 instead of rRET0/rRET1 */
+      retReg = (cUnit->instructionSet == kThumb2) ? rARG2 : rRET0;
       break;
     case Instruction::AND_LONG_2ADDR:
     case Instruction::AND_LONG:
-#if defined(TARGET_X86)
-      return genAndLong(cUnit, rlDest, rlSrc1, rlSrc2);
-#else
+      if (cUnit->instructionSet == kX86) {
+        return genAndLong(cUnit, rlDest, rlSrc1, rlSrc2);
+      }
       firstOp = kOpAnd;
       secondOp = kOpAnd;
       break;
-#endif
     case Instruction::OR_LONG:
     case Instruction::OR_LONG_2ADDR:
-#if defined(TARGET_X86)
-      return genOrLong(cUnit, rlDest, rlSrc1, rlSrc2);
-#else
+      if (cUnit->instructionSet == kX86) {
+        return genOrLong(cUnit, rlDest, rlSrc1, rlSrc2);
+      }
       firstOp = kOpOr;
       secondOp = kOpOr;
       break;
-#endif
     case Instruction::XOR_LONG:
     case Instruction::XOR_LONG_2ADDR:
-#if defined(TARGET_X86)
-      return genXorLong(cUnit, rlDest, rlSrc1, rlSrc2);
-#else
+      if (cUnit->instructionSet == kX86) {
+        return genXorLong(cUnit, rlDest, rlSrc1, rlSrc2);
+      }
       firstOp = kOpXor;
       secondOp = kOpXor;
       break;
-#endif
     case Instruction::NEG_LONG: {
       return genNegLong(cUnit, rlDest, rlSrc2);
     }
@@ -2327,27 +2114,11 @@
     oatFlushAllRegs(cUnit);   /* Send everything to home location */
     if (checkZero) {
       loadValueDirectWideFixed(cUnit, rlSrc2, rARG2, rARG3);
-#if !defined(TARGET_X86)
-      int rTgt = loadHelper(cUnit, funcOffset);
-#endif
-      int tReg = oatAllocTemp(cUnit);
-#if defined(TARGET_ARM)
-      newLIR4(cUnit, kThumb2OrrRRRs, tReg, rARG2, rARG3, 0);
-      oatFreeTemp(cUnit, tReg);
-      genCheck(cUnit, kCondEq, kThrowDivZero);
-#else
-      opRegRegReg(cUnit, kOpOr, tReg, rARG2, rARG3);
-#endif
-      genImmedCheck(cUnit, kCondEq, tReg, 0, kThrowDivZero);
-      oatFreeTemp(cUnit, tReg);
+      int rTgt = callHelperSetup(cUnit, funcOffset);
+      genDivZeroCheck(cUnit, rARG2, rARG3);
       loadValueDirectWideFixed(cUnit, rlSrc1, rARG0, rARG1);
       // NOTE: callout here is not a safepoint
-#if !defined(TARGET_X86)
-      opReg(cUnit, kOpBlx, rTgt);
-      oatFreeTemp(cUnit, rTgt);
-#else
-      opThreadMem(cUnit, kOpBlx, funcOffset);
-#endif
+      callHelper(cUnit, rTgt, funcOffset, false /* not safepoint */);
     } else {
       callRuntimeHelperRegLocationRegLocation(cUnit, funcOffset,
                           rlSrc1, rlSrc2, false);
@@ -2515,40 +2286,6 @@
   return false;
 }
 
-/*
- * Generate callout to updateDebugger. Note that we're overloading
- * the use of rSUSPEND here.  When the debugger is active, this
- * register holds the address of the update function.  So, if it's
- * non-null, we call out to it.
- *
- * Note also that rRET0 and rRET1 must be preserved across this
- * code.  This must be handled by the stub.
- */
-void genDebuggerUpdate(CompilationUnit* cUnit, int32_t offset)
-{
-  // Following DCHECK verifies that dPC is in range of single load immediate
-  DCHECK((offset == DEBUGGER_METHOD_ENTRY) ||
-         (offset == DEBUGGER_METHOD_EXIT) || ((offset & 0xffff) == offset));
-  oatClobberCalleeSave(cUnit);
-#if defined(TARGET_ARM)
-  opRegImm(cUnit, kOpCmp, rSUSPEND, 0);
-  opIT(cUnit, kArmCondNe, "T");
-  loadConstant(cUnit, rARG2, offset);   // arg2 <- Entry code
-  LIR* callInst = opReg(cUnit, kOpBlx, rSUSPEND);
-  markSafepointPC(cUnit, callInst);
-#elif defined(TARGET_X86)
-  UNIMPLEMENTED(FATAL);
-#else
-  LIR* branch = opCmpImmBranch(cUnit, kCondEq, rSUSPEND, 0, NULL);
-  loadConstant(cUnit, rARG2, offset);
-  LIR* callInst = opReg(cUnit, kOpBlx, rSUSPEND);
-  markSafepointPC(cUnit, callInst);
-  LIR* target = newLIR0(cUnit, kPseudoTargetLabel);
-  branch->target = (LIR*)target;
-#endif
-  oatFreeTemp(cUnit, rARG2);
-}
-
 /* Check if we need to check for pending suspend request */
 void genSuspendTest(CompilationUnit* cUnit, int optFlags)
 {
@@ -2556,38 +2293,12 @@
     return;
   }
   oatFlushAllRegs(cUnit);
-  if (cUnit->genDebugger) {
-    // If generating code for the debugger, always check for suspension
-#if defined(TARGET_X86)
-    UNIMPLEMENTED(FATAL);
-#else
-    int rTgt = loadHelper(cUnit, ENTRYPOINT_OFFSET(pTestSuspendFromCode));
-    LIR* callInst = opReg(cUnit, kOpBlx, rTgt);
-    markSafepointPC(cUnit, callInst);
-    // Refresh rSUSPEND
-    loadWordDisp(cUnit, rSELF,
-           ENTRYPOINT_OFFSET(pUpdateDebuggerFromCode),
-           rSUSPEND);
-#endif
-  } else {
-    LIR* branch = NULL;
-#if defined(TARGET_ARM)
-    // In non-debug case, only check periodically
-    newLIR2(cUnit, kThumbSubRI8, rSUSPEND, 1);
-    branch = opCondBranch(cUnit, kCondEq, NULL);
-#elif defined(TARGET_X86)
-    newLIR2(cUnit, kX86Cmp16TI8, Thread::ThreadFlagsOffset().Int32Value(), 0);
-    branch = opCondBranch(cUnit, kCondNe, NULL);
-#else
-    opRegImm(cUnit, kOpSub, rSUSPEND, 1);
-    branch = opCmpImmBranch(cUnit, kCondEq, rSUSPEND, 0, NULL);
-#endif
-    LIR* retLab = newLIR0(cUnit, kPseudoTargetLabel);
-    LIR* target = rawLIR(cUnit, cUnit->currentDalvikOffset,
-               kPseudoSuspendTarget, (intptr_t)retLab, cUnit->currentDalvikOffset);
-    branch->target = (LIR*)target;
-    oatInsertGrowableList(cUnit, &cUnit->suspendLaunchpads, (intptr_t)target);
-  }
+  LIR* branch = opTestSuspend(cUnit, NULL);
+  LIR* retLab = newLIR0(cUnit, kPseudoTargetLabel);
+  LIR* target = rawLIR(cUnit, cUnit->currentDalvikOffset, kPseudoSuspendTarget,
+                       (intptr_t)retLab, cUnit->currentDalvikOffset);
+  branch->target = (LIR*)target;
+  oatInsertGrowableList(cUnit, &cUnit->suspendLaunchpads, (intptr_t)target);
 }
 
 /* Check if we need to check for pending suspend request */
@@ -2597,28 +2308,12 @@
     opUnconditionalBranch(cUnit, target);
     return;
   }
-  if (cUnit->genDebugger) {
-    genSuspendTest(cUnit, optFlags);
-    opUnconditionalBranch(cUnit, target);
-  } else {
-#if defined(TARGET_ARM)
-    // In non-debug case, only check periodically
-    newLIR2(cUnit, kThumbSubRI8, rSUSPEND, 1);
-    opCondBranch(cUnit, kCondNe, target);
-#elif defined(TARGET_X86)
-    newLIR2(cUnit, kX86Cmp16TI8, Thread::ThreadFlagsOffset().Int32Value(), 0);
-    opCondBranch(cUnit, kCondEq, target);
-#else
-    opRegImm(cUnit, kOpSub, rSUSPEND, 1);
-    opCmpImmBranch(cUnit, kCondNe, rSUSPEND, 0, target);
-#endif
-    LIR* launchPad = rawLIR(cUnit, cUnit->currentDalvikOffset,
-                kPseudoSuspendTarget, (intptr_t)target, cUnit->currentDalvikOffset);
-    oatFlushAllRegs(cUnit);
-    opUnconditionalBranch(cUnit, launchPad);
-    oatInsertGrowableList(cUnit, &cUnit->suspendLaunchpads,
-                          (intptr_t)launchPad);
-  }
+  opTestSuspend(cUnit, target);
+  LIR* launchPad = rawLIR(cUnit, cUnit->currentDalvikOffset, kPseudoSuspendTarget, (intptr_t)target,
+                          cUnit->currentDalvikOffset);
+  oatFlushAllRegs(cUnit);
+  opUnconditionalBranch(cUnit, launchPad);
+  oatInsertGrowableList(cUnit, &cUnit->suspendLaunchpads, (intptr_t)launchPad);
 }
 
 }  // namespace art
diff --git a/src/compiler/codegen/GenInvoke.cc b/src/compiler/codegen/GenInvoke.cc
index 0208a4a..2da6242 100644
--- a/src/compiler/codegen/GenInvoke.cc
+++ b/src/compiler/codegen/GenInvoke.cc
@@ -140,10 +140,11 @@
                    uintptr_t directCode, uintptr_t directMethod,
                    InvokeType type)
 {
-#if !defined(TARGET_ARM)
-  directCode = 0;
-  directMethod = 0;
-#endif
+  if (cUnit->instructionSet != kThumb2) {
+    // Disable sharpening
+    directCode = 0;
+    directMethod = 0;
+  }
   if (directCode != 0 && directMethod != 0) {
     switch (state) {
     case 0:  // Get the current Method* [sets rARG0]
@@ -155,14 +156,9 @@
           dataTarget = addWordData(cUnit, &cUnit->codeLiteralList, dexIdx);
           dataTarget->operands[1] = type;
         }
-#if defined(TARGET_ARM)
-        LIR* loadPcRel = rawLIR(cUnit, cUnit->currentDalvikOffset,
-                                kThumb2LdrPcRel12, rINVOKE_TGT, 0, 0, 0, 0,
-                                dataTarget);
+        LIR* loadPcRel = opPcRelLoad(cUnit, rINVOKE_TGT, dataTarget);
         oatAppendLIR(cUnit, loadPcRel);
-#else
-        UNIMPLEMENTED(FATAL) << (void*)dataTarget;
-#endif
+        DCHECK_EQ(cUnit->instructionSet, kThumb2) << (void*)dataTarget;
       }
       if (directMethod != (uintptr_t)-1) {
         loadConstant(cUnit, rARG0, directMethod);
@@ -172,14 +168,9 @@
           dataTarget = addWordData(cUnit, &cUnit->methodLiteralList, dexIdx);
           dataTarget->operands[1] = type;
         }
-#if defined(TARGET_ARM)
-        LIR* loadPcRel = rawLIR(cUnit, cUnit->currentDalvikOffset,
-                                kThumb2LdrPcRel12, rARG0, 0, 0, 0, 0,
-                                dataTarget);
+        LIR* loadPcRel = opPcRelLoad(cUnit, rARG0, dataTarget);
         oatAppendLIR(cUnit, loadPcRel);
-#else
-        UNIMPLEMENTED(FATAL) << (void*)dataTarget;
-#endif
+        DCHECK_EQ(cUnit->instructionSet, kThumb2) << (void*)dataTarget;
       }
       break;
     default:
@@ -205,14 +196,9 @@
             dataTarget = addWordData(cUnit, &cUnit->codeLiteralList, dexIdx);
             dataTarget->operands[1] = type;
           }
-#if defined(TARGET_ARM)
-          LIR* loadPcRel = rawLIR(cUnit, cUnit->currentDalvikOffset,
-                                  kThumb2LdrPcRel12, rINVOKE_TGT, 0, 0, 0, 0,
-                                  dataTarget);
+          LIR* loadPcRel = opPcRelLoad(cUnit, rINVOKE_TGT, dataTarget);
           oatAppendLIR(cUnit, loadPcRel);
-#else
-          UNIMPLEMENTED(FATAL) << (void*)dataTarget;
-#endif
+          DCHECK_EQ(cUnit->instructionSet, kThumb2) << (void*)dataTarget;
         }
       }
       break;
@@ -221,14 +207,15 @@
                    Array::DataOffset(sizeof(Object*)).Int32Value() + dexIdx * 4,
                    rARG0);
       break;
-#if !defined(TARGET_X86)
     case 3:  // Grab the code from the method*
-      if (directCode == 0) {
-        loadWordDisp(cUnit, rARG0, AbstractMethod::GetCodeOffset().Int32Value(),
-                     rINVOKE_TGT);
+      if (cUnit->instructionSet != kX86) {
+        if (directCode == 0) {
+          loadWordDisp(cUnit, rARG0, AbstractMethod::GetCodeOffset().Int32Value(),
+                       rINVOKE_TGT);
+        }
+        break;
       }
-      break;
-#endif
+      // Intentional fallthrough for x86
     default:
       return -1;
     }
@@ -271,12 +258,12 @@
       loadWordDisp(cUnit, rINVOKE_TGT, (methodIdx * 4) +
                    Array::DataOffset(sizeof(Object*)).Int32Value(), rARG0);
       break;
-#if !defined(TARGET_X86)
     case 4: // Get the compiled code address [uses rARG0, sets rINVOKE_TGT]
-      loadWordDisp(cUnit, rARG0, AbstractMethod::GetCodeOffset().Int32Value(),
-                   rINVOKE_TGT);
-      break;
-#endif
+      if (cUnit->instructionSet != kX86) {
+        loadWordDisp(cUnit, rARG0, AbstractMethod::GetCodeOffset().Int32Value(), rINVOKE_TGT);
+        break;
+      }
+      // Intentional fallthrough for X86
     default:
       return -1;
   }
@@ -291,19 +278,19 @@
                           uint32_t dexIdx, uint32_t unused, uintptr_t unused2,
                           uintptr_t directMethod, InvokeType unused4)
 {
-#if !defined(TARGET_ARM)
-  directMethod = 0;
-#endif
-#if !defined(TARGET_X86)
-  int trampoline = ENTRYPOINT_OFFSET(pInvokeInterfaceTrampoline);
-#endif
+  if (cUnit->instructionSet != kThumb2) {
+    // Disable sharpening
+    directMethod = 0;
+  }
+  int trampoline = (cUnit->instructionSet == kX86) ? 0
+      : ENTRYPOINT_OFFSET(pInvokeInterfaceTrampoline);
 
   if (directMethod != 0) {
     switch (state) {
       case 0:  // Load the trampoline target [sets rINVOKE_TGT].
-#if !defined(TARGET_X86)
-        loadWordDisp(cUnit, rSELF, trampoline, rINVOKE_TGT);
-#endif
+        if (cUnit->instructionSet != kX86) {
+          loadWordDisp(cUnit, rSELF, trampoline, rINVOKE_TGT);
+        }
         // Get the interface Method* [sets rARG0]
         if (directMethod != (uintptr_t)-1) {
           loadConstant(cUnit, rARG0, directMethod);
@@ -313,14 +300,9 @@
             dataTarget = addWordData(cUnit, &cUnit->methodLiteralList, dexIdx);
             dataTarget->operands[1] = kInterface;
           }
-#if defined(TARGET_ARM)
-          LIR* loadPcRel = rawLIR(cUnit, cUnit->currentDalvikOffset,
-                                  kThumb2LdrPcRel12, rARG0, 0, 0, 0, 0,
-                                  dataTarget);
+          LIR* loadPcRel = opPcRelLoad(cUnit, rARG0, dataTarget);
           oatAppendLIR(cUnit, loadPcRel);
-#else
-          UNIMPLEMENTED(FATAL) << (void*)dataTarget;
-#endif
+          DCHECK_EQ(cUnit->instructionSet, kThumb2) << (void*)dataTarget;
         }
         break;
       default:
@@ -332,9 +314,9 @@
         // Get the current Method* [sets rARG0] - TUNING: remove copy of method if it is promoted.
         loadCurrMethodDirect(cUnit, rARG0);
         // Load the trampoline target [sets rINVOKE_TGT].
-#if !defined(TARGET_X86)
-        loadWordDisp(cUnit, rSELF, trampoline, rINVOKE_TGT);
-#endif
+        if (cUnit->instructionSet != kX86) {
+          loadWordDisp(cUnit, rSELF, trampoline, rINVOKE_TGT);
+        }
         break;
     case 1:  // Get method->dex_cache_resolved_methods_ [set/use rARG0]
       loadWordDisp(cUnit, rARG0,
@@ -361,10 +343,10 @@
    * resolved at compile time, we bail to a runtime helper.
    */
   if (state == 0) {
-#if !defined(TARGET_X86)
-    // Load trampoline target
-    loadWordDisp(cUnit, rSELF, trampoline, rINVOKE_TGT);
-#endif
+    if (cUnit->instructionSet != kX86) {
+      // Load trampoline target
+      loadWordDisp(cUnit, rSELF, trampoline, rINVOKE_TGT);
+    }
     // Load rARG0 with method index
     loadConstant(cUnit, rARG0, dexIdx);
     return 1;
@@ -593,42 +575,41 @@
 
   int startOffset = oatSRegOffset(cUnit, info->args[3].sRegLow);
   int outsOffset = 4 /* Method* */ + (3 * 4);
-#if defined(TARGET_MIPS) || defined(TARGET_X86)
-  // Generate memcpy
-  opRegRegImm(cUnit, kOpAdd, rARG0, rSP, outsOffset);
-  opRegRegImm(cUnit, kOpAdd, rARG1, rSP, startOffset);
-  callRuntimeHelperRegRegImm(cUnit, ENTRYPOINT_OFFSET(pMemcpy),
-                             rARG0, rARG1, (info->numArgWords - 3) * 4, false);
-#else
-  if (info->numArgWords >= 20) {
+  if (cUnit->instructionSet != kThumb2) {
     // Generate memcpy
     opRegRegImm(cUnit, kOpAdd, rARG0, rSP, outsOffset);
     opRegRegImm(cUnit, kOpAdd, rARG1, rSP, startOffset);
     callRuntimeHelperRegRegImm(cUnit, ENTRYPOINT_OFFSET(pMemcpy),
                                rARG0, rARG1, (info->numArgWords - 3) * 4, false);
   } else {
-    // Use vldm/vstm pair using rARG3 as a temp
-    int regsLeft = std::min(info->numArgWords - 3, 16);
-    callState = nextCallInsn(cUnit, info, callState, dexIdx, methodIdx,
-                             directCode, directMethod, type);
-    opRegRegImm(cUnit, kOpAdd, rARG3, rSP, startOffset);
-    LIR* ld = newLIR3(cUnit, kThumb2Vldms, rARG3, fr0, regsLeft);
-    //TUNING: loosen barrier
-    ld->defMask = ENCODE_ALL;
-    setMemRefType(ld, true /* isLoad */, kDalvikReg);
-    callState = nextCallInsn(cUnit, info, callState, dexIdx, methodIdx,
-                             directCode, directMethod, type);
-    opRegRegImm(cUnit, kOpAdd, rARG3, rSP, 4 /* Method* */ + (3 * 4));
-    callState = nextCallInsn(cUnit, info, callState, dexIdx, methodIdx,
-                             directCode, directMethod, type);
-    LIR* st = newLIR3(cUnit, kThumb2Vstms, rARG3, fr0, regsLeft);
-    setMemRefType(st, false /* isLoad */, kDalvikReg);
-    st->defMask = ENCODE_ALL;
-    callState = nextCallInsn(cUnit, info, callState, dexIdx, methodIdx,
-                             directCode, directMethod, type);
-
+    if (info->numArgWords >= 20) {
+      // Generate memcpy
+      opRegRegImm(cUnit, kOpAdd, rARG0, rSP, outsOffset);
+      opRegRegImm(cUnit, kOpAdd, rARG1, rSP, startOffset);
+      callRuntimeHelperRegRegImm(cUnit, ENTRYPOINT_OFFSET(pMemcpy),
+                                 rARG0, rARG1, (info->numArgWords - 3) * 4, false);
+    } else {
+      // Use vldm/vstm pair using rARG3 as a temp
+      int regsLeft = std::min(info->numArgWords - 3, 16);
+      callState = nextCallInsn(cUnit, info, callState, dexIdx, methodIdx,
+                               directCode, directMethod, type);
+      opRegRegImm(cUnit, kOpAdd, rARG3, rSP, startOffset);
+      LIR* ld = opVldm(cUnit, rARG3, regsLeft);
+      //TUNING: loosen barrier
+      ld->defMask = ENCODE_ALL;
+      setMemRefType(ld, true /* isLoad */, kDalvikReg);
+      callState = nextCallInsn(cUnit, info, callState, dexIdx, methodIdx,
+                               directCode, directMethod, type);
+      opRegRegImm(cUnit, kOpAdd, rARG3, rSP, 4 /* Method* */ + (3 * 4));
+      callState = nextCallInsn(cUnit, info, callState, dexIdx, methodIdx,
+                               directCode, directMethod, type);
+      LIR* st = opVstm(cUnit, rARG3, regsLeft);
+      setMemRefType(st, false /* isLoad */, kDalvikReg);
+      st->defMask = ENCODE_ALL;
+      callState = nextCallInsn(cUnit, info, callState, dexIdx, methodIdx,
+                               directCode, directMethod, type);
+    }
   }
-#endif
 
   callState = loadArgRegs(cUnit, info, callState, nextCallInsn,
                           dexIdx, methodIdx, directCode, directMethod,
@@ -667,7 +648,10 @@
 
 bool genInlinedCharAt(CompilationUnit* cUnit, CallInfo* info)
 {
-#if defined(TARGET_ARM) || defined(TARGET_X86)
+  if (cUnit->instructionSet == kMips) {
+    // TODO - add Mips implementation
+    return false;
+  }
   // Location of reference to data array
   int valueOffset = String::ValueOffset().Int32Value();
   // Location of count
@@ -685,41 +669,43 @@
   genNullCheck(cUnit, rlObj.sRegLow, rlObj.lowReg, info->optFlags);
   bool rangeCheck = (!(info->optFlags & MIR_IGNORE_RANGE_CHECK));
   LIR* launchPad = NULL;
-#if !defined(TARGET_X86)
-  int regOff = oatAllocTemp(cUnit);
-  int regPtr = oatAllocTemp(cUnit);
-  if (rangeCheck) {
-    regMax = oatAllocTemp(cUnit);
-    loadWordDisp(cUnit, rlObj.lowReg, countOffset, regMax);
+  int regOff = INVALID_REG;
+  int regPtr = INVALID_REG;
+  if (cUnit->instructionSet != kX86) {
+    regOff = oatAllocTemp(cUnit);
+    regPtr = oatAllocTemp(cUnit);
+    if (rangeCheck) {
+      regMax = oatAllocTemp(cUnit);
+      loadWordDisp(cUnit, rlObj.lowReg, countOffset, regMax);
+    }
+    loadWordDisp(cUnit, rlObj.lowReg, offsetOffset, regOff);
+    loadWordDisp(cUnit, rlObj.lowReg, valueOffset, regPtr);
+    if (rangeCheck) {
+      // Set up a launch pad to allow retry in case of bounds violation */
+      launchPad = rawLIR(cUnit, 0, kPseudoIntrinsicRetry, (uintptr_t)info);
+      oatInsertGrowableList(cUnit, &cUnit->intrinsicLaunchpads,
+                            (intptr_t)launchPad);
+      opRegReg(cUnit, kOpCmp, rlIdx.lowReg, regMax);
+      oatFreeTemp(cUnit, regMax);
+      opCondBranch(cUnit, kCondCs, launchPad);
+   }
+  } else {
+    if (rangeCheck) {
+      regMax = oatAllocTemp(cUnit);
+      loadWordDisp(cUnit, rlObj.lowReg, countOffset, regMax);
+      // Set up a launch pad to allow retry in case of bounds violation */
+      launchPad = rawLIR(cUnit, 0, kPseudoIntrinsicRetry, (uintptr_t)info);
+      oatInsertGrowableList(cUnit, &cUnit->intrinsicLaunchpads,
+                            (intptr_t)launchPad);
+      opRegReg(cUnit, kOpCmp, rlIdx.lowReg, regMax);
+      oatFreeTemp(cUnit, regMax);
+      opCondBranch(cUnit, kCondCc, launchPad);
+    }
+    regOff = oatAllocTemp(cUnit);
+    regPtr = oatAllocTemp(cUnit);
+    loadWordDisp(cUnit, rlObj.lowReg, offsetOffset, regOff);
+    loadWordDisp(cUnit, rlObj.lowReg, valueOffset, regPtr);
   }
-  loadWordDisp(cUnit, rlObj.lowReg, offsetOffset, regOff);
-  loadWordDisp(cUnit, rlObj.lowReg, valueOffset, regPtr);
-  if (rangeCheck) {
-    // Set up a launch pad to allow retry in case of bounds violation */
-    launchPad = rawLIR(cUnit, 0, kPseudoIntrinsicRetry, (uintptr_t)info);
-    oatInsertGrowableList(cUnit, &cUnit->intrinsicLaunchpads,
-                          (intptr_t)launchPad);
-    opRegReg(cUnit, kOpCmp, rlIdx.lowReg, regMax);
-    oatFreeTemp(cUnit, regMax);
-    opCondBranch(cUnit, kCondCs, launchPad);
-  }
-#else
-  if (rangeCheck) {
-    regMax = oatAllocTemp(cUnit);
-    loadWordDisp(cUnit, rlObj.lowReg, countOffset, regMax);
-    // Set up a launch pad to allow retry in case of bounds violation */
-    launchPad = rawLIR(cUnit, 0, kPseudoIntrinsicRetry, (uintptr_t)info);
-    oatInsertGrowableList(cUnit, &cUnit->intrinsicLaunchpads,
-                          (intptr_t)launchPad);
-    opRegReg(cUnit, kOpCmp, rlIdx.lowReg, regMax);
-    oatFreeTemp(cUnit, regMax);
-    opCondBranch(cUnit, kCondCc, launchPad);
-  }
-  int regOff = oatAllocTemp(cUnit);
-  int regPtr = oatAllocTemp(cUnit);
-  loadWordDisp(cUnit, rlObj.lowReg, offsetOffset, regOff);
-  loadWordDisp(cUnit, rlObj.lowReg, valueOffset, regPtr);
-#endif
   opRegImm(cUnit, kOpAdd, regPtr, dataOffset);
   opRegReg(cUnit, kOpAdd, regOff, rlIdx.lowReg);
   oatFreeTemp(cUnit, rlObj.lowReg);
@@ -736,46 +722,16 @@
   // Record that we've already inlined & null checked
   info->optFlags |= (MIR_INLINED | MIR_IGNORE_NULL_CHECK);
   return true;
-#else
-  return false;
-#endif
-}
-
-bool genInlinedMinMaxInt(CompilationUnit *cUnit, CallInfo* info, bool isMin)
-{
-#if defined(TARGET_ARM) || defined(TARGET_X86)
-  RegLocation rlSrc1 = info->args[0];
-  RegLocation rlSrc2 = info->args[1];
-  rlSrc1 = loadValue(cUnit, rlSrc1, kCoreReg);
-  rlSrc2 = loadValue(cUnit, rlSrc2, kCoreReg);
-  RegLocation rlDest = inlineTarget(cUnit, info);
-  RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
-  opRegReg(cUnit, kOpCmp, rlSrc1.lowReg, rlSrc2.lowReg);
-#if defined(TARGET_ARM)
-  opIT(cUnit, (isMin) ? kArmCondGt : kArmCondLt, "E");
-  opRegReg(cUnit, kOpMov, rlResult.lowReg, rlSrc2.lowReg);
-  opRegReg(cUnit, kOpMov, rlResult.lowReg, rlSrc1.lowReg);
-  genBarrier(cUnit);
-#elif defined(TARGET_X86)
-  LIR* branch = newLIR2(cUnit, kX86Jcc8, 0, isMin ? kX86CondG : kX86CondL);
-  opRegReg(cUnit, kOpMov, rlResult.lowReg, rlSrc1.lowReg);
-  LIR* branch2 = newLIR1(cUnit, kX86Jmp8, 0);
-  branch->target = newLIR0(cUnit, kPseudoTargetLabel);
-  opRegReg(cUnit, kOpMov, rlResult.lowReg, rlSrc2.lowReg);
-  branch2->target = newLIR0(cUnit, kPseudoTargetLabel);
-#endif
-  storeValue(cUnit, rlDest, rlResult);
-  return true;
-#else
-  return false;
-#endif
 }
 
 // Generates an inlined String.isEmpty or String.length.
 bool genInlinedStringIsEmptyOrLength(CompilationUnit* cUnit, CallInfo* info,
                                      bool isEmpty)
 {
-#if defined(TARGET_ARM) || defined(TARGET_X86)
+  if (cUnit->instructionSet == kMips) {
+    // TODO - add Mips implementation
+    return false;
+  }
   // dst = src.length();
   RegLocation rlObj = info->args[0];
   rlObj = loadValue(cUnit, rlObj, kCoreReg);
@@ -786,25 +742,26 @@
                rlResult.lowReg);
   if (isEmpty) {
     // dst = (dst == 0);
-#if defined(TARGET_ARM)
-    int tReg = oatAllocTemp(cUnit);
-    opRegReg(cUnit, kOpNeg, tReg, rlResult.lowReg);
-    opRegRegReg(cUnit, kOpAdc, rlResult.lowReg, rlResult.lowReg, tReg);
-#elif defined(TARGET_X86)
-    opRegImm(cUnit, kOpSub, rlResult.lowReg, 1);
-    opRegImm(cUnit, kOpLsr, rlResult.lowReg, 31);
-#endif
+    if (cUnit->instructionSet == kThumb2) {
+      int tReg = oatAllocTemp(cUnit);
+      opRegReg(cUnit, kOpNeg, tReg, rlResult.lowReg);
+      opRegRegReg(cUnit, kOpAdc, rlResult.lowReg, rlResult.lowReg, tReg);
+    } else {
+      DCHECK_EQ(cUnit->instructionSet, kX86);
+      opRegImm(cUnit, kOpSub, rlResult.lowReg, 1);
+      opRegImm(cUnit, kOpLsr, rlResult.lowReg, 31);
+    }
   }
   storeValue(cUnit, rlDest, rlResult);
   return true;
-#else
-  return false;
-#endif
 }
 
 bool genInlinedAbsInt(CompilationUnit *cUnit, CallInfo* info)
 {
-#if defined(TARGET_ARM) || defined(TARGET_X86)
+  if (cUnit->instructionSet == kMips) {
+    // TODO - add Mips implementation
+    return false;
+  }
   RegLocation rlSrc = info->args[0];
   rlSrc = loadValue(cUnit, rlSrc, kCoreReg);
   RegLocation rlDest = inlineTarget(cUnit, info);
@@ -816,72 +773,72 @@
   opRegReg(cUnit, kOpXor, rlResult.lowReg, signReg);
   storeValue(cUnit, rlDest, rlResult);
   return true;
-#else
-  return false;
-#endif
 }
 
 bool genInlinedAbsLong(CompilationUnit *cUnit, CallInfo* info)
 {
-#if defined(TARGET_ARM)
-  RegLocation rlSrc = info->args[0];
-  rlSrc = loadValueWide(cUnit, rlSrc, kCoreReg);
-  RegLocation rlDest = inlineTargetWide(cUnit, info);
-  RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
-  int signReg = oatAllocTemp(cUnit);
-  // abs(x) = y<=x>>31, (x+y)^y.
-  opRegRegImm(cUnit, kOpAsr, signReg, rlSrc.highReg, 31);
-  opRegRegReg(cUnit, kOpAdd, rlResult.lowReg, rlSrc.lowReg, signReg);
-  opRegRegReg(cUnit, kOpAdc, rlResult.highReg, rlSrc.highReg, signReg);
-  opRegReg(cUnit, kOpXor, rlResult.lowReg, signReg);
-  opRegReg(cUnit, kOpXor, rlResult.highReg, signReg);
-  storeValueWide(cUnit, rlDest, rlResult);
-  return true;
-#elif defined(TARGET_X86)
-  // Reuse source registers to avoid running out of temps
-  RegLocation rlSrc = info->args[0];
-  rlSrc = loadValueWide(cUnit, rlSrc, kCoreReg);
-  RegLocation rlDest = inlineTargetWide(cUnit, info);
-  RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
-  opRegCopyWide(cUnit, rlResult.lowReg, rlResult.highReg, rlSrc.lowReg, rlSrc.highReg);
-  oatFreeTemp(cUnit, rlSrc.lowReg);
-  oatFreeTemp(cUnit, rlSrc.highReg);
-  int signReg = oatAllocTemp(cUnit);
-  // abs(x) = y<=x>>31, (x+y)^y.
-  opRegRegImm(cUnit, kOpAsr, signReg, rlResult.highReg, 31);
-  opRegReg(cUnit, kOpAdd, rlResult.lowReg, signReg);
-  opRegReg(cUnit, kOpAdc, rlResult.highReg, signReg);
-  opRegReg(cUnit, kOpXor, rlResult.lowReg, signReg);
-  opRegReg(cUnit, kOpXor, rlResult.highReg, signReg);
-  storeValueWide(cUnit, rlDest, rlResult);
-  return true;
-#else
-  return false;
-#endif
+  if (cUnit->instructionSet == kMips) {
+    // TODO - add Mips implementation
+    return false;
+  }
+  if (cUnit->instructionSet == kThumb2) {
+    RegLocation rlSrc = info->args[0];
+    rlSrc = loadValueWide(cUnit, rlSrc, kCoreReg);
+    RegLocation rlDest = inlineTargetWide(cUnit, info);
+    RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
+    int signReg = oatAllocTemp(cUnit);
+    // abs(x) = y<=x>>31, (x+y)^y.
+    opRegRegImm(cUnit, kOpAsr, signReg, rlSrc.highReg, 31);
+    opRegRegReg(cUnit, kOpAdd, rlResult.lowReg, rlSrc.lowReg, signReg);
+    opRegRegReg(cUnit, kOpAdc, rlResult.highReg, rlSrc.highReg, signReg);
+    opRegReg(cUnit, kOpXor, rlResult.lowReg, signReg);
+    opRegReg(cUnit, kOpXor, rlResult.highReg, signReg);
+    storeValueWide(cUnit, rlDest, rlResult);
+    return true;
+  } else {
+    DCHECK_EQ(cUnit->instructionSet, kX86);
+    // Reuse source registers to avoid running out of temps
+    RegLocation rlSrc = info->args[0];
+    rlSrc = loadValueWide(cUnit, rlSrc, kCoreReg);
+    RegLocation rlDest = inlineTargetWide(cUnit, info);
+    RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
+    opRegCopyWide(cUnit, rlResult.lowReg, rlResult.highReg, rlSrc.lowReg, rlSrc.highReg);
+    oatFreeTemp(cUnit, rlSrc.lowReg);
+    oatFreeTemp(cUnit, rlSrc.highReg);
+    int signReg = oatAllocTemp(cUnit);
+    // abs(x) = y<=x>>31, (x+y)^y.
+    opRegRegImm(cUnit, kOpAsr, signReg, rlResult.highReg, 31);
+    opRegReg(cUnit, kOpAdd, rlResult.lowReg, signReg);
+    opRegReg(cUnit, kOpAdc, rlResult.highReg, signReg);
+    opRegReg(cUnit, kOpXor, rlResult.lowReg, signReg);
+    opRegReg(cUnit, kOpXor, rlResult.highReg, signReg);
+    storeValueWide(cUnit, rlDest, rlResult);
+    return true;
+  }
 }
 
 bool genInlinedFloatCvt(CompilationUnit *cUnit, CallInfo* info)
 {
-#if defined(TARGET_ARM) || defined(TARGET_X86)
+  if (cUnit->instructionSet == kMips) {
+    // TODO - add Mips implementation
+    return false;
+  }
   RegLocation rlSrc = info->args[0];
   RegLocation rlDest = inlineTarget(cUnit, info);
   storeValue(cUnit, rlDest, rlSrc);
   return true;
-#else
-  return false;
-#endif
 }
 
 bool genInlinedDoubleCvt(CompilationUnit *cUnit, CallInfo* info)
 {
-#if defined(TARGET_ARM) || defined(TARGET_X86)
+  if (cUnit->instructionSet == kMips) {
+    // TODO - add Mips implementation
+    return false;
+  }
   RegLocation rlSrc = info->args[0];
   RegLocation rlDest = inlineTargetWide(cUnit, info);
   storeValueWide(cUnit, rlDest, rlSrc);
   return true;
-#else
-  return false;
-#endif
 }
 
 /*
@@ -891,7 +848,10 @@
 bool genInlinedIndexOf(CompilationUnit* cUnit, CallInfo* info,
                        bool zeroBased)
 {
-#if defined(TARGET_ARM) || defined(TARGET_X86)
+  if (cUnit->instructionSet == kMips) {
+    // TODO - add Mips implementation
+    return false;
+  }
   oatClobberCalleeSave(cUnit);
   oatLockCallTemps(cUnit);  // Using fixed registers
   int regPtr = rARG0;
@@ -908,20 +868,18 @@
   } else {
     loadValueDirectFixed(cUnit, rlStart, regStart);
   }
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, ENTRYPOINT_OFFSET(pIndexOf));
-#endif
+  int rTgt = (cUnit->instructionSet != kX86) ? loadHelper(cUnit, ENTRYPOINT_OFFSET(pIndexOf)) : 0;
   genNullCheck(cUnit, rlObj.sRegLow, regPtr, info->optFlags);
   LIR* launchPad = rawLIR(cUnit, 0, kPseudoIntrinsicRetry, (uintptr_t)info);
   oatInsertGrowableList(cUnit, &cUnit->intrinsicLaunchpads,
               (intptr_t)launchPad);
   opCmpImmBranch(cUnit, kCondGt, regChar, 0xFFFF, launchPad);
   // NOTE: not a safepoint
-#if !defined(TARGET_X86)
-  opReg(cUnit, kOpBlx, rTgt);
-#else
-  opThreadMem(cUnit, kOpBlx, ENTRYPOINT_OFFSET(pIndexOf));
-#endif
+  if (cUnit->instructionSet != kX86) {
+    opReg(cUnit, kOpBlx, rTgt);
+  } else {
+    opThreadMem(cUnit, kOpBlx, ENTRYPOINT_OFFSET(pIndexOf));
+  }
   LIR* resumeTgt = newLIR0(cUnit, kPseudoTargetLabel);
   launchPad->operands[2] = (uintptr_t)resumeTgt;
   // Record that we've already inlined & null checked
@@ -930,15 +888,15 @@
   RegLocation rlDest = inlineTarget(cUnit, info);
   storeValue(cUnit, rlDest, rlReturn);
   return true;
-#else
-  return false;
-#endif
 }
 
 /* Fast string.compareTo(Ljava/lang/string;)I. */
 bool genInlinedStringCompareTo(CompilationUnit* cUnit, CallInfo* info)
 {
-#if defined(TARGET_ARM) || defined(TARGET_X86)
+  if (cUnit->instructionSet == kMips) {
+    // TODO - add Mips implementation
+    return false;
+  }
   oatClobberCalleeSave(cUnit);
   oatLockCallTemps(cUnit);  // Using fixed registers
   int regThis = rARG0;
@@ -948,9 +906,8 @@
   RegLocation rlCmp = info->args[1];
   loadValueDirectFixed(cUnit, rlThis, regThis);
   loadValueDirectFixed(cUnit, rlCmp, regCmp);
-#if !defined(TARGET_X86)
-  int rTgt = loadHelper(cUnit, ENTRYPOINT_OFFSET(pStringCompareTo));
-#endif
+  int rTgt = (cUnit->instructionSet != kX86) ?
+      loadHelper(cUnit, ENTRYPOINT_OFFSET(pStringCompareTo)) : 0;
   genNullCheck(cUnit, rlThis.sRegLow, regThis, info->optFlags);
   //TUNING: check if rlCmp.sRegLow is already null checked
   LIR* launchPad = rawLIR(cUnit, 0, kPseudoIntrinsicRetry, (uintptr_t)info);
@@ -958,11 +915,11 @@
                         (intptr_t)launchPad);
   opCmpImmBranch(cUnit, kCondEq, regCmp, 0, launchPad);
   // NOTE: not a safepoint
-#if !defined(TARGET_X86)
-  opReg(cUnit, kOpBlx, rTgt);
-#else
-  opThreadMem(cUnit, kOpBlx, ENTRYPOINT_OFFSET(pStringCompareTo));
-#endif
+  if (cUnit->instructionSet != kX86) {
+    opReg(cUnit, kOpBlx, rTgt);
+  } else {
+    opThreadMem(cUnit, kOpBlx, ENTRYPOINT_OFFSET(pStringCompareTo));
+  }
   launchPad->operands[2] = 0;  // No return possible
   // Record that we've already inlined & null checked
   info->optFlags |= (MIR_INLINED | MIR_IGNORE_NULL_CHECK);
@@ -970,97 +927,6 @@
   RegLocation rlDest = inlineTarget(cUnit, info);
   storeValue(cUnit, rlDest, rlReturn);
   return true;
-#else
-  return false;
-#endif
-}
-
-bool genInlinedCas32(CompilationUnit* cUnit, CallInfo* info, bool need_write_barrier) {
-#if defined(TARGET_ARM)
-  // Unused - RegLocation rlSrcUnsafe = info->args[0];
-  RegLocation rlSrcObj= info->args[1];  // Object - known non-null
-  RegLocation rlSrcOffset= info->args[2];  // long low
-  rlSrcOffset.wide = 0;  // ignore high half in info->args[3]
-  RegLocation rlSrcExpected= info->args[4];  // int or Object
-  RegLocation rlSrcNewValue= info->args[5];  // int or Object
-  RegLocation rlDest = inlineTarget(cUnit, info);  // boolean place for result
-
-
-  // Release store semantics, get the barrier out of the way.
-  oatGenMemBarrier(cUnit, kSY);
-
-  RegLocation rlObject = loadValue(cUnit, rlSrcObj, kCoreReg);
-  RegLocation rlNewValue = loadValue(cUnit, rlSrcNewValue, kCoreReg);
-
-  if (need_write_barrier) {
-    // Mark card for object assuming new value is stored.
-    markGCCard(cUnit, rlNewValue.lowReg, rlObject.lowReg);
-  }
-
-  RegLocation rlOffset = loadValue(cUnit, rlSrcOffset, kCoreReg);
-
-  int rPtr = oatAllocTemp(cUnit);
-  opRegRegReg(cUnit, kOpAdd, rPtr, rlObject.lowReg, rlOffset.lowReg);
-
-  // Free now unneeded rlObject and rlOffset to give more temps.
-  oatClobberSReg(cUnit, rlObject.sRegLow);
-  oatFreeTemp(cUnit, rlObject.lowReg);
-  oatClobberSReg(cUnit, rlOffset.sRegLow);
-  oatFreeTemp(cUnit, rlOffset.lowReg);
-
-  int rOldValue = oatAllocTemp(cUnit);
-  newLIR3(cUnit, kThumb2Ldrex, rOldValue, rPtr, 0);  // rOldValue := [rPtr]
-
-  RegLocation rlExpected = loadValue(cUnit, rlSrcExpected, kCoreReg);
-
-  // if (rOldValue == rExpected) {
-  //   [rPtr] <- rNewValue && rResult := success ? 0 : 1
-  //   rResult ^= 1
-  // } else {
-  //   rResult := 0
-  // }
-  opRegReg(cUnit, kOpCmp, rOldValue, rlExpected.lowReg);
-  oatFreeTemp(cUnit, rOldValue);  // Now unneeded.
-  RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
-  opIT(cUnit, kArmCondEq, "TE");
-  newLIR4(cUnit, kThumb2Strex, rlResult.lowReg, rlNewValue.lowReg, rPtr, 0);
-  oatFreeTemp(cUnit, rPtr);  // Now unneeded.
-  opRegImm(cUnit, kOpXor, rlResult.lowReg, 1);
-  opRegReg(cUnit, kOpXor, rlResult.lowReg, rlResult.lowReg);
-
-  storeValue(cUnit, rlDest, rlResult);
-
-  return true;
-#else
-  return false;
-#endif
-}
-
-bool genInlinedSqrt(CompilationUnit* cUnit, CallInfo* info) {
-#if defined(TARGET_ARM)
-  LIR *branch;
-  RegLocation rlSrc = info->args[0];
-  RegLocation rlDest = inlineTargetWide(cUnit, info);  // double place for result
-  rlSrc = loadValueWide(cUnit, rlSrc, kFPReg);
-  RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kFPReg, true);
-  newLIR2(cUnit, kThumb2Vsqrtd, S2D(rlResult.lowReg, rlResult.highReg),
-          S2D(rlSrc.lowReg, rlSrc.highReg));
-  newLIR2(cUnit, kThumb2Vcmpd, S2D(rlResult.lowReg, rlResult.highReg),
-          S2D(rlResult.lowReg, rlResult.highReg));
-  newLIR0(cUnit, kThumb2Fmstat);
-  branch = newLIR2(cUnit, kThumbBCond, 0, kArmCondEq);
-  oatClobberCalleeSave(cUnit);
-  oatLockCallTemps(cUnit);  // Using fixed registers
-  int rTgt = loadHelper(cUnit, ENTRYPOINT_OFFSET(pSqrt));
-  newLIR3(cUnit, kThumb2Fmrrd, r0, r1, S2D(rlSrc.lowReg, rlSrc.highReg));
-  newLIR1(cUnit, kThumbBlxR, rTgt);
-  newLIR3(cUnit, kThumb2Fmdrr, S2D(rlResult.lowReg, rlResult.highReg), r0, r1);
-  branch->target = newLIR0(cUnit, kPseudoTargetLabel);
-  storeValueWide(cUnit, rlDest, rlResult);
-  return true;
-#else
-  return false;
-#endif
 }
 
 bool genIntrinsic(CompilationUnit* cUnit, CallInfo* info)
diff --git a/src/compiler/codegen/LocalOptimizations.cc b/src/compiler/codegen/LocalOptimizations.cc
index 1dca491..c0e6036 100644
--- a/src/compiler/codegen/LocalOptimizations.cc
+++ b/src/compiler/codegen/LocalOptimizations.cc
@@ -91,11 +91,14 @@
       continue;
     }
 
-#if defined(TARGET_X86)
-    int nativeRegId = (EncodingMap[thisLIR->opcode].flags & IS_STORE) ? thisLIR->operands[2] : thisLIR->operands[0];
-#else
-    int nativeRegId = thisLIR->operands[0];
-#endif
+    int nativeRegId;
+    if (cUnit->instructionSet == kX86) {
+      // If x86, location differs depending on whether memory/reg operation.
+      nativeRegId = (EncodingMap[thisLIR->opcode].flags & IS_STORE) ? thisLIR->operands[2]
+          : thisLIR->operands[0];
+    } else {
+      nativeRegId = thisLIR->operands[0];
+    }
     bool isThisLIRLoad = EncodingMap[thisLIR->opcode].flags & IS_LOAD;
     LIR* checkLIR;
     /* Use the mem mask to determine the rough memory location */
@@ -107,19 +110,19 @@
      */
     if (!(thisMemMask & (ENCODE_LITERAL | ENCODE_DALVIK_REG))) continue;
 
-#if defined(TARGET_X86)
-    u8 stopUseRegMask = (IS_BRANCH | thisLIR->useMask) & ~ENCODE_MEM;
-#else
-    /*
-     * Add r15 (pc) to the resource mask to prevent this instruction
-     * from sinking past branch instructions. Also take out the memory
-     * region bits since stopMask is used to check data/control
-     * dependencies.
-     */
-    u8 stopUseRegMask = (ENCODE_REG_PC | thisLIR->useMask) &
-              ~ENCODE_MEM;
-#endif
     u8 stopDefRegMask = thisLIR->defMask & ~ENCODE_MEM;
+    u8 stopUseRegMask;
+    if (cUnit->instructionSet == kX86) {
+      stopUseRegMask = (IS_BRANCH | thisLIR->useMask) & ~ENCODE_MEM;
+    } else {
+      /*
+       * Add pc to the resource mask to prevent this instruction
+       * from sinking past branch instructions. Also take out the memory
+       * region bits since stopMask is used to check data/control
+       * dependencies.
+       */
+        stopUseRegMask = (ENCODE_REG_PC | thisLIR->useMask) & ~ENCODE_MEM;
+    }
 
     for (checkLIR = NEXT_LIR(thisLIR);
         checkLIR != tailLIR;
@@ -226,15 +229,15 @@
       }
 
       if (stopHere == true) {
-#if defined(TARGET_X86)
-        // Prevent stores from being sunk between ops that generate ccodes and
-        // ops that use them.
-        int flags = EncodingMap[checkLIR->opcode].flags;
-        if (sinkDistance > 0 && (flags & IS_BRANCH) && (flags & USES_CCODES)) {
-          checkLIR = PREV_LIR(checkLIR);
-          sinkDistance--;
+        if (cUnit->instructionSet == kX86) {
+          // Prevent stores from being sunk between ops that generate ccodes and
+          // ops that use them.
+          int flags = EncodingMap[checkLIR->opcode].flags;
+          if (sinkDistance > 0 && (flags & IS_BRANCH) && (flags & USES_CCODES)) {
+            checkLIR = PREV_LIR(checkLIR);
+            sinkDistance--;
+          }
         }
-#endif
         DEBUG_OPT(dumpDependentInsnPair(thisLIR, checkLIR, "REG CLOBBERED"));
         /* Only sink store instructions */
         if (sinkDistance && !isThisLIRLoad) {
@@ -287,17 +290,17 @@
 
     u8 stopUseAllMask = thisLIR->useMask;
 
-#if !defined(TARGET_X86)
-    /*
-     * Branches for null/range checks are marked with the true resource
-     * bits, and loads to Dalvik registers, constant pools, and non-alias
-     * locations are safe to be hoisted. So only mark the heap references
-     * conservatively here.
-     */
-    if (stopUseAllMask & ENCODE_HEAP_REF) {
-      stopUseAllMask |= ENCODE_REG_PC;
+    if (cUnit->instructionSet != kX86) {
+      /*
+       * Branches for null/range checks are marked with the true resource
+       * bits, and loads to Dalvik registers, constant pools, and non-alias
+       * locations are safe to be hoisted. So only mark the heap references
+       * conservatively here.
+       */
+      if (stopUseAllMask & ENCODE_HEAP_REF) {
+        stopUseAllMask |= ENCODE_REG_PC;
+      }
     }
-#endif
 
     /* Similar as above, but just check for pure register dependency */
     u8 stopUseRegMask = stopUseAllMask & ~ENCODE_MEM;
diff --git a/src/compiler/codegen/MethodBitcode.cc b/src/compiler/codegen/MethodBitcode.cc
index 7920883..f3ebf09 100644
--- a/src/compiler/codegen/MethodBitcode.cc
+++ b/src/compiler/codegen/MethodBitcode.cc
@@ -1722,23 +1722,22 @@
       }
       break;
 
-#if defined(TARGET_ARM)
+    // TODO: need GBC intrinsic to take advantage of fused operations
     case kMirOpFusedCmplFloat:
-      UNIMPLEMENTED(WARNING) << "unimp kMirOpFusedCmpFloat";
+      UNIMPLEMENTED(FATAL) << "kMirOpFusedCmpFloat unsupported";
       break;
     case kMirOpFusedCmpgFloat:
-      UNIMPLEMENTED(WARNING) << "unimp kMirOpFusedCmgFloat";
+      UNIMPLEMENTED(FATAL) << "kMirOpFusedCmgFloat unsupported";
       break;
     case kMirOpFusedCmplDouble:
-      UNIMPLEMENTED(WARNING) << "unimp kMirOpFusedCmplDouble";
+      UNIMPLEMENTED(FATAL) << "kMirOpFusedCmplDouble unsupported";
       break;
     case kMirOpFusedCmpgDouble:
-      UNIMPLEMENTED(WARNING) << "unimp kMirOpFusedCmpgDouble";
+      UNIMPLEMENTED(FATAL) << "kMirOpFusedCmpgDouble unsupported";
       break;
     case kMirOpFusedCmpLong:
-      UNIMPLEMENTED(WARNING) << "unimp kMirOpLongCmpBranch";
+      UNIMPLEMENTED(FATAL) << "kMirOpLongCmpBranch unsupported";
       break;
-#endif
     default:
       break;
   }
@@ -1863,12 +1862,6 @@
     Instruction::Format dalvikFormat =
         Instruction::FormatOf(mir->dalvikInsn.opcode);
 
-    /* If we're compiling for the debugger, generate an update callout */
-    if (cUnit->genDebugger) {
-      UNIMPLEMENTED(FATAL) << "Need debug codegen";
-      //genDebuggerUpdate(cUnit, mir->offset);
-    }
-
     if (opcode == kMirOpCheck) {
       // Combine check and work halves of throwing instruction.
       MIR* workHalf = mir->meta.throwInsn;
@@ -2521,13 +2514,10 @@
   RegLocation rlSrc1 = getLoc(cUnit, inst->getOperand(0));
   rlSrc1 = loadValue(cUnit, rlSrc1, kCoreReg);
   llvm::Value* rhs = inst->getOperand(1);
-#if defined(TARGET_MIPS)
-  // Compare and branch in one shot
-  (void)taken;
-  (void)cond;
-  (void)rhs;
-  UNIMPLEMENTED(FATAL);
-#else
+  if (cUnit->instructionSet == kMips) {
+    // Compare and branch in one shot
+    UNIMPLEMENTED(FATAL);
+  }
   //Compare, then branch
   // TODO: handle fused CMP_LONG/IF_xxZ case
   if (llvm::ConstantInt* src2 = llvm::dyn_cast<llvm::ConstantInt>(rhs)) {
@@ -2540,7 +2530,6 @@
     opRegReg(cUnit, kOpCmp, rlSrc1.lowReg, rlSrc2.lowReg);
   }
   opCondBranch(cUnit, cond, taken);
-#endif
   // Fallthrough
   opUnconditionalBranch(cUnit, fallThrough);
 }
diff --git a/src/compiler/codegen/MethodCodegenDriver.cc b/src/compiler/codegen/MethodCodegenDriver.cc
index 3321c33..8fd6045 100644
--- a/src/compiler/codegen/MethodCodegenDriver.cc
+++ b/src/compiler/codegen/MethodCodegenDriver.cc
@@ -18,9 +18,6 @@
 
 namespace art {
 
-#define DISPLAY_MISSING_TARGETS (cUnit->enableDebug & \
-                                 (1 << kDebugDisplayMissingTargets))
-
 const RegLocation badLoc = {kLocDalvikFrame, 0, 0, 0, 0, 0, 0, 0, 0,
                             INVALID_REG, INVALID_REG, INVALID_SREG,
                             INVALID_SREG};
@@ -124,40 +121,40 @@
                              vtableIdx, directCode, directMethod,
                              originalType);
   }
-  if (DISPLAY_MISSING_TARGETS) {
+  if (cUnit->enableDebug & (1 << kDebugDisplayMissingTargets)) {
     genShowTarget(cUnit);
   }
   LIR* callInst;
-#if !defined(TARGET_X86)
-  callInst = opReg(cUnit, kOpBlx, rINVOKE_TGT);
-#else
-  if (fastPath && info->type != kInterface) {
-    callInst = opMem(cUnit, kOpBlx, rARG0, AbstractMethod::GetCodeOffset().Int32Value());
+  if (cUnit->instructionSet != kX86) {
+    callInst = opReg(cUnit, kOpBlx, rINVOKE_TGT);
   } else {
-    int trampoline = 0;
-    switch (info->type) {
-    case kInterface:
-      trampoline = fastPath ? ENTRYPOINT_OFFSET(pInvokeInterfaceTrampoline)
-          : ENTRYPOINT_OFFSET(pInvokeInterfaceTrampolineWithAccessCheck);
-      break;
-    case kDirect:
-      trampoline = ENTRYPOINT_OFFSET(pInvokeDirectTrampolineWithAccessCheck);
-      break;
-    case kStatic:
-      trampoline = ENTRYPOINT_OFFSET(pInvokeStaticTrampolineWithAccessCheck);
-      break;
-    case kSuper:
-      trampoline = ENTRYPOINT_OFFSET(pInvokeSuperTrampolineWithAccessCheck);
-      break;
-    case kVirtual:
-      trampoline = ENTRYPOINT_OFFSET(pInvokeVirtualTrampolineWithAccessCheck);
-      break;
-    default:
-      LOG(FATAL) << "Unexpected invoke type";
+    if (fastPath && info->type != kInterface) {
+      callInst = opMem(cUnit, kOpBlx, rARG0, AbstractMethod::GetCodeOffset().Int32Value());
+    } else {
+      int trampoline = 0;
+      switch (info->type) {
+      case kInterface:
+        trampoline = fastPath ? ENTRYPOINT_OFFSET(pInvokeInterfaceTrampoline)
+            : ENTRYPOINT_OFFSET(pInvokeInterfaceTrampolineWithAccessCheck);
+        break;
+      case kDirect:
+        trampoline = ENTRYPOINT_OFFSET(pInvokeDirectTrampolineWithAccessCheck);
+        break;
+      case kStatic:
+        trampoline = ENTRYPOINT_OFFSET(pInvokeStaticTrampolineWithAccessCheck);
+        break;
+      case kSuper:
+        trampoline = ENTRYPOINT_OFFSET(pInvokeSuperTrampolineWithAccessCheck);
+        break;
+      case kVirtual:
+        trampoline = ENTRYPOINT_OFFSET(pInvokeVirtualTrampolineWithAccessCheck);
+        break;
+      default:
+        LOG(FATAL) << "Unexpected invoke type";
+      }
+      callInst = opThreadMem(cUnit, kOpBlx, trampoline);
     }
-    callInst = opThreadMem(cUnit, kOpBlx, trampoline);
   }
-#endif
   markSafepointPC(cUnit, callInst);
 
   oatClobberCalleeSave(cUnit);
@@ -923,11 +920,6 @@
       headLIR->defMask = ENCODE_ALL;
     }
 
-    /* If we're compiling for the debugger, generate an update callout */
-    if (cUnit->genDebugger) {
-      genDebuggerUpdate(cUnit, mir->offset);
-    }
-
     /* Don't generate the SSA annotation unless verbose mode is on */
     if (cUnit->printMe && mir->ssaRep) {
       char* ssaString = oatGetSSAString(cUnit, mir->ssaRep);
diff --git a/src/compiler/codegen/Ralloc.h b/src/compiler/codegen/Ralloc.h
index db8fc7d..55e62b1 100644
--- a/src/compiler/codegen/Ralloc.h
+++ b/src/compiler/codegen/Ralloc.h
@@ -202,10 +202,7 @@
 extern void oatRecordFpPromotion(CompilationUnit* cUnit, int reg, int sReg);
 
 
-/*
- * Architecture-dependent register allocation routines implemented in
- * ${TARGET_ARCH}/${TARGET_ARCH_VARIANT}/Ralloc.c
- */
+/* Architecture-dependent register allocation routines. */
 extern int oatAllocTypedTempPair(CompilationUnit* cUnit,
                                  bool fpHint, int regClass);
 
diff --git a/src/compiler/codegen/RallocUtil.cc b/src/compiler/codegen/RallocUtil.cc
index 8fa110a..4848a59 100644
--- a/src/compiler/codegen/RallocUtil.cc
+++ b/src/compiler/codegen/RallocUtil.cc
@@ -14,13 +14,7 @@
  * limitations under the License.
  */
 
-/*
- * This file contains register alloction support and is intended to be
- * included by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains register alloction support. */
 
 #include "../CompilerUtility.h"
 #include "../CompilerIR.h"
diff --git a/src/compiler/codegen/arm/ArchFactory.cc b/src/compiler/codegen/arm/ArchFactory.cc
index ba49277..f85bd2f 100644
--- a/src/compiler/codegen/arm/ArchFactory.cc
+++ b/src/compiler/codegen/arm/ArchFactory.cc
@@ -14,20 +14,12 @@
  * limitations under the License.
  */
 
-/*
- * This file contains arm-specific codegen factory support.
- * It is included by
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains arm-specific codegen factory support. */
 
 #include "oat/runtime/oat_support_entrypoints.h"
 
 namespace art {
 
-void genDebuggerUpdate(CompilationUnit* cUnit, int32_t offset);
-
 bool genNegLong(CompilationUnit* cUnit, RegLocation rlDest,
                 RegLocation rlSrc)
 {
@@ -104,13 +96,6 @@
 
   flushIns(cUnit, argLocs, rlMethod);
 
-  if (cUnit->genDebugger) {
-    // Refresh update debugger callout
-    loadWordDisp(cUnit, rSELF,
-                 ENTRYPOINT_OFFSET(pUpdateDebuggerFromCode), rSUSPEND);
-    genDebuggerUpdate(cUnit, DEBUGGER_METHOD_ENTRY);
-  }
-
   oatFreeTemp(cUnit, r0);
   oatFreeTemp(cUnit, r1);
   oatFreeTemp(cUnit, r2);
@@ -128,10 +113,6 @@
   oatLockTemp(cUnit, r1);
 
   newLIR0(cUnit, kPseudoMethodExit);
-  /* If we're compiling for the debugger, generate an update callout */
-  if (cUnit->genDebugger) {
-    genDebuggerUpdate(cUnit, DEBUGGER_METHOD_EXIT);
-  }
   opRegImm(cUnit, kOpAdd, rSP, cUnit->frameSize - (spillCount * 4));
   /* Need to restore any FP callee saves? */
   if (cUnit->numFPSpills) {
@@ -207,4 +188,40 @@
 
   return oatArchVariantInit();
 }
+
+bool genAddLong(CompilationUnit* cUnit, RegLocation rlDest,
+                RegLocation rlSrc1, RegLocation rlSrc2)
+{
+  LOG(FATAL) << "Unexpected use of genAddLong for Arm";
+  return false;
+}
+
+bool genSubLong(CompilationUnit* cUnit, RegLocation rlDest,
+                RegLocation rlSrc1, RegLocation rlSrc2)
+{
+  LOG(FATAL) << "Unexpected use of genSubLong for Arm";
+  return false;
+}
+
+bool genAndLong(CompilationUnit* cUnit, RegLocation rlDest,
+                RegLocation rlSrc1, RegLocation rlSrc2)
+{
+  LOG(FATAL) << "Unexpected use of genAndLong for Arm";
+  return false;
+}
+
+bool genOrLong(CompilationUnit* cUnit, RegLocation rlDest,
+               RegLocation rlSrc1, RegLocation rlSrc2)
+{
+  LOG(FATAL) << "Unexpected use of genOrLong for Arm";
+  return false;
+}
+
+bool genXorLong(CompilationUnit* cUnit, RegLocation rlDest,
+               RegLocation rlSrc1, RegLocation rlSrc2)
+{
+  LOG(FATAL) << "Unexpected use of genXoLong for Arm";
+  return false;
+}
+
 }  // namespace art
diff --git a/src/compiler/codegen/arm/ArchUtility.cc b/src/compiler/codegen/arm/ArchUtility.cc
index cdb8486..820f64e 100644
--- a/src/compiler/codegen/arm/ArchUtility.cc
+++ b/src/compiler/codegen/arm/ArchUtility.cc
@@ -22,6 +22,74 @@
 
 namespace art {
 
+void setupTargetResourceMasks(CompilationUnit* cUnit, LIR* lir)
+{
+  DCHECK_EQ(cUnit->instructionSet, kThumb2);
+
+  // Thumb2 specific setup
+  int flags = EncodingMap[lir->opcode].flags;
+  int opcode = lir->opcode;
+
+  if (flags & REG_DEF_LIST0) {
+    lir->defMask |= ENCODE_REG_LIST(lir->operands[0]);
+  }
+
+  if (flags & REG_DEF_LIST1) {
+    lir->defMask |= ENCODE_REG_LIST(lir->operands[1]);
+  }
+
+  if (flags & REG_DEF_FPCS_LIST0) {
+    lir->defMask |= ENCODE_REG_FPCS_LIST(lir->operands[0]);
+  }
+
+  if (flags & REG_DEF_FPCS_LIST2) {
+    for (int i = 0; i < lir->operands[2]; i++) {
+      oatSetupRegMask(cUnit, &lir->defMask, lir->operands[1] + i);
+    }
+  }
+
+  if (flags & REG_USE_PC) {
+    lir->useMask |= ENCODE_REG_PC;
+  }
+
+  /* Conservatively treat the IT block */
+  if (flags & IS_IT) {
+    lir->defMask = ENCODE_ALL;
+  }
+
+  if (flags & REG_USE_LIST0) {
+    lir->useMask |= ENCODE_REG_LIST(lir->operands[0]);
+  }
+
+  if (flags & REG_USE_LIST1) {
+    lir->useMask |= ENCODE_REG_LIST(lir->operands[1]);
+  }
+
+  if (flags & REG_USE_FPCS_LIST0) {
+    lir->useMask |= ENCODE_REG_FPCS_LIST(lir->operands[0]);
+  }
+
+  if (flags & REG_USE_FPCS_LIST2) {
+    for (int i = 0; i < lir->operands[2]; i++) {
+      oatSetupRegMask(cUnit, &lir->useMask, lir->operands[1] + i);
+    }
+  }
+  /* Fixup for kThumbPush/lr and kThumbPop/pc */
+  if (opcode == kThumbPush || opcode == kThumbPop) {
+    u8 r8Mask = oatGetRegMaskCommon(cUnit, r8);
+    if ((opcode == kThumbPush) && (lir->useMask & r8Mask)) {
+      lir->useMask &= ~r8Mask;
+      lir->useMask |= ENCODE_REG_LR;
+    } else if ((opcode == kThumbPop) && (lir->defMask & r8Mask)) {
+      lir->defMask &= ~r8Mask;
+      lir->defMask |= ENCODE_REG_PC;
+    }
+  }
+  if (flags & REG_DEF_LR) {
+    lir->defMask |= ENCODE_REG_LR;
+  }
+}
+
 ArmConditionCode oatArmConditionEncoding(ConditionCode code)
 {
   ArmConditionCode res;
diff --git a/src/compiler/codegen/arm/ArmLIR.h b/src/compiler/codegen/arm/ArmLIR.h
index 1da567e..407ad79 100644
--- a/src/compiler/codegen/arm/ArmLIR.h
+++ b/src/compiler/codegen/arm/ArmLIR.h
@@ -258,6 +258,7 @@
 #define rRET0 r0
 #define rRET1 r1
 #define rINVOKE_TGT rLR
+#define rCOUNT INVALID_REG
 
 /* Shift encodings */
 enum ArmShiftEncodings {
@@ -267,26 +268,6 @@
   kArmRor = 0x3
 };
 
-/* Thumb condition encodings */
-enum ArmConditionCode {
-  kArmCondEq = 0x0,  /* 0000 */
-  kArmCondNe = 0x1,  /* 0001 */
-  kArmCondCs = 0x2,  /* 0010 */
-  kArmCondCc = 0x3,  /* 0011 */
-  kArmCondMi = 0x4,  /* 0100 */
-  kArmCondPl = 0x5,  /* 0101 */
-  kArmCondVs = 0x6,  /* 0110 */
-  kArmCondVc = 0x7,  /* 0111 */
-  kArmCondHi = 0x8,  /* 1000 */
-  kArmCondLs = 0x9,  /* 1001 */
-  kArmCondGe = 0xa,  /* 1010 */
-  kArmCondLt = 0xb,  /* 1011 */
-  kArmCondGt = 0xc,  /* 1100 */
-  kArmCondLe = 0xd,  /* 1101 */
-  kArmCondAl = 0xe,  /* 1110 */
-  kArmCondNv = 0xf,  /* 1111 */
-};
-
 #define isPseudoOpcode(opcode) ((int)(opcode) < 0)
 
 /*
@@ -295,26 +276,9 @@
  * Assemble.cc.
  */
 enum ArmOpcode {
-  kPseudoExportedPC = -18,
-  kPseudoSafepointPC = -17,
-  kPseudoIntrinsicRetry = -16,
-  kPseudoSuspendTarget = -15,
-  kPseudoThrowTarget = -14,
-  kPseudoCaseLabel = -13,
-  kPseudoMethodEntry = -12,
-  kPseudoMethodExit = -11,
-  kPseudoBarrier = -10,
-  kPseudoExtended = -9,
-  kPseudoSSARep = -8,
-  kPseudoEntryBlock = -7,
-  kPseudoExitBlock = -6,
-  kPseudoTargetLabel = -5,
-  kPseudoDalvikByteCodeBoundary = -4,
-  kPseudoPseudoAlign4 = -3,
-  kPseudoEHBlockLabel = -2,
-  kPseudoNormalBlockLabel = -1,
   /************************************************************************/
-  kArm16BitData,     /* DATA   [0] rd[15..0] */
+  kArmFirst = 0,
+  kArm16BitData = kArmFirst, /* DATA   [0] rd[15..0] */
   kThumbAdcRR,       /* adc   [0100000101] rm[5..3] rd[2..0] */
   kThumbAddRRI3,     /* add(1)  [0001110] imm_3[8..6] rn[5..3] rd[2..0]*/
   kThumbAddRI8,      /* add(2)  [00110] rd[10..8] imm_8[7..0] */
diff --git a/src/compiler/codegen/arm/Assemble.cc b/src/compiler/codegen/arm/Assemble.cc
index ede3f61..759ffd3 100644
--- a/src/compiler/codegen/arm/Assemble.cc
+++ b/src/compiler/codegen/arm/Assemble.cc
@@ -1070,7 +1070,7 @@
           // Change the load to be relative to the new Adr base
           lir->operands[1] = baseReg;
           lir->operands[2] = 0;
-          oatSetupResourceMasks(lir);
+          oatSetupResourceMasks(cUnit, lir);
           res = kRetryAll;
         } else {
           if ((lir->opcode == kThumb2Vldrs) ||
@@ -1101,7 +1101,7 @@
           /* operand[0] is src1 in both cb[n]z & CmpRI8 */
           lir->operands[1] = 0;
           lir->target = 0;
-          oatSetupResourceMasks(lir);
+          oatSetupResourceMasks(cUnit, lir);
           res = kRetryAll;
         } else {
           lir->operands[1] = delta >> 1;
@@ -1126,7 +1126,7 @@
             }
           }
           lir->operands[0] = reg;
-          oatSetupResourceMasks(lir);
+          oatSetupResourceMasks(cUnit, lir);
           res = kRetryAll;
         }
       } else if (lir->opcode == kThumbBCond || lir->opcode == kThumb2BCond) {
@@ -1138,7 +1138,7 @@
         delta = target - pc;
         if ((lir->opcode == kThumbBCond) && (delta > 254 || delta < -256)) {
           lir->opcode = kThumb2BCond;
-          oatSetupResourceMasks(lir);
+          oatSetupResourceMasks(cUnit, lir);
           res = kRetryAll;
         }
         lir->operands[0] = delta >> 1;
@@ -1162,7 +1162,7 @@
           // Convert to Thumb2BCond w/ kArmCondAl
           lir->opcode = kThumb2BUncond;
           lir->operands[0] = 0;
-          oatSetupResourceMasks(lir);
+          oatSetupResourceMasks(cUnit, lir);
           res = kRetryAll;
         } else {
           lir->operands[0] = delta >> 1;
@@ -1221,7 +1221,7 @@
           lir->opcode = kThumb2AddRRR;
           lir->operands[1] = rPC;
           lir->operands[2] = lir->operands[0];
-          oatSetupResourceMasks(lir);
+          oatSetupResourceMasks(cUnit, lir);
           res = kRetryAll;
         }
       } else if (lir->opcode == kThumb2MovImm16LST) {
diff --git a/src/compiler/codegen/arm/Codegen.h b/src/compiler/codegen/arm/Codegen.h
index 22f6157..0890c15 100644
--- a/src/compiler/codegen/arm/Codegen.h
+++ b/src/compiler/codegen/arm/Codegen.h
@@ -14,13 +14,7 @@
  * limitations under the License.
  */
 
-/*
- * This file contains register alloction support and is intended to be
- * included by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains register alloction support. */
 
 #include "../../CompilerIR.h"
 
@@ -91,8 +85,19 @@
 
 #endif
 
-extern void oatSetupResourceMasks(LIR* lir);
+extern void oatSetupResourceMasks(CompilationUnit* cUnit, LIR* lir);
 
 extern LIR* oatRegCopyNoInsert(CompilationUnit* cUnit, int rDest, int rSrc);
 
+bool genAddLong(CompilationUnit* cUnit, RegLocation rlDest,
+                RegLocation rlSrc1, RegLocation rlSrc2);
+bool genSubLong(CompilationUnit* cUnit, RegLocation rlDest,
+                RegLocation rlSrc1, RegLocation rlSrc2);
+bool genAndLong(CompilationUnit* cUnit, RegLocation rlDest,
+                RegLocation rlSrc1, RegLocation rlSrc2);
+bool genOrLong(CompilationUnit* cUnit, RegLocation rlDest,
+               RegLocation rlSrc1, RegLocation rlSrc2);
+bool genXorLong(CompilationUnit* cUnit, RegLocation rlDest,
+               RegLocation rlSrc1, RegLocation rlSrc2);
+
 }  // namespace art
diff --git a/src/compiler/codegen/arm/Thumb2/Factory.cc b/src/compiler/codegen/arm/Thumb2/Factory.cc
index c6cb220..c373e35 100644
--- a/src/compiler/codegen/arm/Thumb2/Factory.cc
+++ b/src/compiler/codegen/arm/Thumb2/Factory.cc
@@ -16,13 +16,7 @@
 
 namespace art {
 
-/*
- * This file contains codegen for the Thumb ISA and is intended to be
- * includes by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains codegen for the Thumb ISA. */
 
 static int coreRegs[] = {r0, r1, r2, r3, rSUSPEND, r5, r6, r7, r8, rSELF, r10,
                          r11, r12, rSP, rLR, rPC};
@@ -1035,6 +1029,41 @@
   return res;
 }
 
+LIR* opThreadMem(CompilationUnit* cUnit, OpKind op, int threadOffset)
+{
+  LOG(FATAL) << "Unexpected use of opThreadMem for Arm";
+  return NULL;
+}
 
+LIR* opMem(CompilationUnit* cUnit, OpKind op, int rBase, int disp)
+{
+  LOG(FATAL) << "Unexpected use of opMem for Arm";
+  return NULL;
+}
+
+LIR* storeBaseIndexedDisp(CompilationUnit *cUnit,
+                          int rBase, int rIndex, int scale, int displacement,
+                          int rSrc, int rSrcHi,
+                          OpSize size, int sReg)
+{
+  LOG(FATAL) << "Unexpected use of storeBaseIndexedDisp for Arm";
+  return NULL;
+}
+
+LIR* opRegMem(CompilationUnit *cUnit, OpKind op, int rDest, int rBase,
+              int offset)
+{
+  LOG(FATAL) << "Unexpected use of opRegMem for Arm";
+  return NULL;
+}
+
+LIR* loadBaseIndexedDisp(CompilationUnit *cUnit,
+                         int rBase, int rIndex, int scale, int displacement,
+                         int rDest, int rDestHi,
+                         OpSize size, int sReg)
+{
+  LOG(FATAL) << "Unexpected use of loadBaseIndexedDisp for Arm";
+  return NULL;
+}
 
 }  // namespace art
diff --git a/src/compiler/codegen/arm/Thumb2/Gen.cc b/src/compiler/codegen/arm/Thumb2/Gen.cc
index 3584a52..cbe6b14 100644
--- a/src/compiler/codegen/arm/Thumb2/Gen.cc
+++ b/src/compiler/codegen/arm/Thumb2/Gen.cc
@@ -14,13 +14,7 @@
  * limitations under the License.
  */
 
-/*
- * This file contains codegen for the Thumb2 ISA and is intended to be
- * includes by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains codegen for the Thumb2 ISA. */
 
 #include "oat_compilation_unit.h"
 #include "oat/runtime/oat_support_entrypoints.h"
@@ -308,6 +302,13 @@
   }
 }
 
+LIR* opCmpBranch(CompilationUnit* cUnit, ConditionCode cond, int src1,
+         int src2, LIR* target)
+{
+  opRegReg(cUnit, kOpCmp, src1, src2);
+  return opCondBranch(cUnit, cond, target);
+}
+
 /*
  * Generate a Thumb2 IT instruction, which can nullify up to
  * four subsequent instructions based on a condition and its
@@ -730,7 +731,7 @@
 LIR* opRegCopyNoInsert(CompilationUnit* cUnit, int rDest, int rSrc)
 {
   LIR* res;
-  ArmOpcode opcode;
+  int opcode;
   if (FPREG(rDest) || FPREG(rSrc))
     return fpRegCopy(cUnit, rDest, rSrc);
   if (LOWREG(rDest) && LOWREG(rSrc))
@@ -863,4 +864,200 @@
   return true;
 }
 
+/*
+ * Mark garbage collection card. Skip if the value we're storing is null.
+ */
+void markGCCard(CompilationUnit* cUnit, int valReg, int tgtAddrReg)
+{
+  int regCardBase = oatAllocTemp(cUnit);
+  int regCardNo = oatAllocTemp(cUnit);
+  LIR* branchOver = opCmpImmBranch(cUnit, kCondEq, valReg, 0, NULL);
+  loadWordDisp(cUnit, rSELF, Thread::CardTableOffset().Int32Value(), regCardBase);
+  opRegRegImm(cUnit, kOpLsr, regCardNo, tgtAddrReg, CardTable::kCardShift);
+  storeBaseIndexed(cUnit, regCardBase, regCardNo, regCardBase, 0,
+                   kUnsignedByte);
+  LIR* target = newLIR0(cUnit, kPseudoTargetLabel);
+  branchOver->target = (LIR*)target;
+  oatFreeTemp(cUnit, regCardBase);
+  oatFreeTemp(cUnit, regCardNo);
+}
+
+LIR* genRegMemCheck(CompilationUnit* cUnit, ConditionCode cCode,
+                    int reg1, int base, int offset, ThrowKind kind)
+{
+  LOG(FATAL) << "Unexpected use of genRegMemCheck for Arm";
+  return NULL;
+}
+
+RegLocation genDivRemLit(CompilationUnit* cUnit, RegLocation rlDest, int reg1, int lit, bool isDiv)
+{
+  LOG(FATAL) << "Unexpected use of genDivRemLit for Arm";
+  return rlDest;
+}
+
+RegLocation genDivRem(CompilationUnit* cUnit, RegLocation rlDest, int reg1, int reg2, bool isDiv)
+{
+  LOG(FATAL) << "Unexpected use of genDivRem for Arm";
+  return rlDest;
+}
+
+bool genInlinedMinMaxInt(CompilationUnit *cUnit, CallInfo* info, bool isMin)
+{
+  DCHECK_EQ(cUnit->instructionSet, kThumb2);
+  RegLocation rlSrc1 = info->args[0];
+  RegLocation rlSrc2 = info->args[1];
+  rlSrc1 = loadValue(cUnit, rlSrc1, kCoreReg);
+  rlSrc2 = loadValue(cUnit, rlSrc2, kCoreReg);
+  RegLocation rlDest = inlineTarget(cUnit, info);
+  RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
+  opRegReg(cUnit, kOpCmp, rlSrc1.lowReg, rlSrc2.lowReg);
+  opIT(cUnit, (isMin) ? kArmCondGt : kArmCondLt, "E");
+  opRegReg(cUnit, kOpMov, rlResult.lowReg, rlSrc2.lowReg);
+  opRegReg(cUnit, kOpMov, rlResult.lowReg, rlSrc1.lowReg);
+  genBarrier(cUnit);
+  storeValue(cUnit, rlDest, rlResult);
+  return true;
+}
+
+void opLea(CompilationUnit* cUnit, int rBase, int reg1, int reg2, int scale, int offset)
+{
+  LOG(FATAL) << "Unexpected use of opLea for Arm";
+}
+
+void opTlsCmp(CompilationUnit* cUnit, int offset, int val)
+{
+  LOG(FATAL) << "Unexpected use of opTlsCmp for Arm";
+}
+
+bool genInlinedCas32(CompilationUnit* cUnit, CallInfo* info, bool need_write_barrier) {
+  DCHECK_EQ(cUnit->instructionSet, kThumb2);
+  // Unused - RegLocation rlSrcUnsafe = info->args[0];
+  RegLocation rlSrcObj= info->args[1];  // Object - known non-null
+  RegLocation rlSrcOffset= info->args[2];  // long low
+  rlSrcOffset.wide = 0;  // ignore high half in info->args[3]
+  RegLocation rlSrcExpected= info->args[4];  // int or Object
+  RegLocation rlSrcNewValue= info->args[5];  // int or Object
+  RegLocation rlDest = inlineTarget(cUnit, info);  // boolean place for result
+
+
+  // Release store semantics, get the barrier out of the way.
+  oatGenMemBarrier(cUnit, kSY);
+
+  RegLocation rlObject = loadValue(cUnit, rlSrcObj, kCoreReg);
+  RegLocation rlNewValue = loadValue(cUnit, rlSrcNewValue, kCoreReg);
+
+  if (need_write_barrier) {
+    // Mark card for object assuming new value is stored.
+    markGCCard(cUnit, rlNewValue.lowReg, rlObject.lowReg);
+  }
+
+  RegLocation rlOffset = loadValue(cUnit, rlSrcOffset, kCoreReg);
+
+  int rPtr = oatAllocTemp(cUnit);
+  opRegRegReg(cUnit, kOpAdd, rPtr, rlObject.lowReg, rlOffset.lowReg);
+
+  // Free now unneeded rlObject and rlOffset to give more temps.
+  oatClobberSReg(cUnit, rlObject.sRegLow);
+  oatFreeTemp(cUnit, rlObject.lowReg);
+  oatClobberSReg(cUnit, rlOffset.sRegLow);
+  oatFreeTemp(cUnit, rlOffset.lowReg);
+
+  int rOldValue = oatAllocTemp(cUnit);
+  newLIR3(cUnit, kThumb2Ldrex, rOldValue, rPtr, 0);  // rOldValue := [rPtr]
+
+  RegLocation rlExpected = loadValue(cUnit, rlSrcExpected, kCoreReg);
+
+  // if (rOldValue == rExpected) {
+  //   [rPtr] <- rNewValue && rResult := success ? 0 : 1
+  //   rResult ^= 1
+  // } else {
+  //   rResult := 0
+  // }
+  opRegReg(cUnit, kOpCmp, rOldValue, rlExpected.lowReg);
+  oatFreeTemp(cUnit, rOldValue);  // Now unneeded.
+  RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
+  opIT(cUnit, kArmCondEq, "TE");
+  newLIR4(cUnit, kThumb2Strex, rlResult.lowReg, rlNewValue.lowReg, rPtr, 0);
+  oatFreeTemp(cUnit, rPtr);  // Now unneeded.
+  opRegImm(cUnit, kOpXor, rlResult.lowReg, 1);
+  opRegReg(cUnit, kOpXor, rlResult.lowReg, rlResult.lowReg);
+
+  storeValue(cUnit, rlDest, rlResult);
+
+  return true;
+}
+
+bool genInlinedSqrt(CompilationUnit* cUnit, CallInfo* info) {
+  DCHECK_EQ(cUnit->instructionSet, kThumb2);
+  LIR *branch;
+  RegLocation rlSrc = info->args[0];
+  RegLocation rlDest = inlineTargetWide(cUnit, info);  // double place for result
+  rlSrc = loadValueWide(cUnit, rlSrc, kFPReg);
+  RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kFPReg, true);
+  newLIR2(cUnit, kThumb2Vsqrtd, S2D(rlResult.lowReg, rlResult.highReg),
+          S2D(rlSrc.lowReg, rlSrc.highReg));
+  newLIR2(cUnit, kThumb2Vcmpd, S2D(rlResult.lowReg, rlResult.highReg),
+          S2D(rlResult.lowReg, rlResult.highReg));
+  newLIR0(cUnit, kThumb2Fmstat);
+  branch = newLIR2(cUnit, kThumbBCond, 0, kArmCondEq);
+  oatClobberCalleeSave(cUnit);
+  oatLockCallTemps(cUnit);  // Using fixed registers
+  int rTgt = loadHelper(cUnit, ENTRYPOINT_OFFSET(pSqrt));
+  newLIR3(cUnit, kThumb2Fmrrd, r0, r1, S2D(rlSrc.lowReg, rlSrc.highReg));
+  newLIR1(cUnit, kThumbBlxR, rTgt);
+  newLIR3(cUnit, kThumb2Fmdrr, S2D(rlResult.lowReg, rlResult.highReg), r0, r1);
+  branch->target = newLIR0(cUnit, kPseudoTargetLabel);
+  storeValueWide(cUnit, rlDest, rlResult);
+  return true;
+}
+
+LIR* opPcRelLoad(CompilationUnit* cUnit, int reg, LIR* target)
+{
+  return rawLIR(cUnit, cUnit->currentDalvikOffset, kThumb2LdrPcRel12, reg, 0, 0, 0, 0, target);
+}
+
+LIR* opVldm(CompilationUnit* cUnit, int rBase, int count)
+{
+  return newLIR3(cUnit, kThumb2Vldms, rBase, fr0, count);
+}
+
+LIR* opVstm(CompilationUnit* cUnit, int rBase, int count)
+{
+  return newLIR3(cUnit, kThumb2Vstms, rBase, fr0, count);
+}
+
+void genMultiplyByTwoBitMultiplier(CompilationUnit* cUnit, RegLocation rlSrc,
+                                   RegLocation rlResult, int lit,
+                                   int firstBit, int secondBit)
+{
+  opRegRegRegShift(cUnit, kOpAdd, rlResult.lowReg, rlSrc.lowReg, rlSrc.lowReg,
+                   encodeShift(kArmLsl, secondBit - firstBit));
+  if (firstBit != 0) {
+    opRegRegImm(cUnit, kOpLsl, rlResult.lowReg, rlResult.lowReg, firstBit);
+  }
+}
+
+void genDivZeroCheck(CompilationUnit* cUnit, int regLo, int regHi)
+{
+  int tReg = oatAllocTemp(cUnit);
+  newLIR4(cUnit, kThumb2OrrRRRs, tReg, regLo, regHi, 0);
+  oatFreeTemp(cUnit, tReg);
+  genCheck(cUnit, kCondEq, kThrowDivZero);
+}
+
+// Test suspend flag, return target of taken suspend branch
+LIR* opTestSuspend(CompilationUnit* cUnit, LIR* target)
+{
+  newLIR2(cUnit, kThumbSubRI8, rSUSPEND, 1);
+  return opCondBranch(cUnit, (target == NULL) ? kCondEq : kCondNe, target);
+}
+
+// Decrement register and branch on condition
+LIR* opDecAndBranch(CompilationUnit* cUnit, ConditionCode cCode, int reg, LIR* target)
+{
+  // Combine sub & test using sub setflags encoding here
+  newLIR3(cUnit, kThumb2SubsRRI12, reg, reg, 1);
+  return opCondBranch(cUnit, cCode, target);
+}
+
 }  // namespace art
diff --git a/src/compiler/codegen/arm/Thumb2/Ralloc.cc b/src/compiler/codegen/arm/Thumb2/Ralloc.cc
index 98a110c..894488a 100644
--- a/src/compiler/codegen/arm/Thumb2/Ralloc.cc
+++ b/src/compiler/codegen/arm/Thumb2/Ralloc.cc
@@ -16,13 +16,7 @@
 
 namespace art {
 
-/*
- * This file contains codegen for the Thumb ISA and is intended to be
- * includes by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains codegen for the Thumb ISA. */
 
 /*
  * Alloc a pair of core registers, or a double.  Low reg in low byte,
@@ -74,8 +68,7 @@
   oatInitPool(pool->FPRegs, fpRegs, pool->numFPRegs);
   // Keep special registers from being allocated
   for (int i = 0; i < numReserved; i++) {
-    if (NO_SUSPEND && !cUnit->genDebugger &&
-      (reservedRegs[i] == rSUSPEND)) {
+    if (NO_SUSPEND && (reservedRegs[i] == rSUSPEND)) {
       //To measure cost of suspend check
       continue;
     }
diff --git a/src/compiler/codegen/arm/armv7-a/Codegen.cc b/src/compiler/codegen/arm/armv7-a/Codegen.cc
index ba1e7ab..c398b8e 100644
--- a/src/compiler/codegen/arm/armv7-a/Codegen.cc
+++ b/src/compiler/codegen/arm/armv7-a/Codegen.cc
@@ -15,7 +15,6 @@
  */
 #define _CODEGEN_C
 #define _ARMV7_A
-#define TARGET_ARM
 
 #include "../../../Dalvik.h"
 #include "../../../CompilerInternals.h"
diff --git a/src/compiler/codegen/mips/ArchFactory.cc b/src/compiler/codegen/mips/ArchFactory.cc
index e2d9e91..e5dc98f 100644
--- a/src/compiler/codegen/mips/ArchFactory.cc
+++ b/src/compiler/codegen/mips/ArchFactory.cc
@@ -14,13 +14,7 @@
  * limitations under the License.
  */
 
-/*
- * This file contains mips-specific codegen factory support.
- * It is included by
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains mips-specific codegen factory support. */
 
 #include "oat/runtime/oat_support_entrypoints.h"
 
@@ -97,8 +91,6 @@
   return false;
 }
 
-void genDebuggerUpdate(CompilationUnit* cUnit, int32_t offset);
-
 /*
  * In the Arm code a it is typical to use the link register
  * to hold the target address.  However, for Mips we must
@@ -185,13 +177,6 @@
 
   flushIns(cUnit, argLocs, rlMethod);
 
-  if (cUnit->genDebugger) {
-    // Refresh update debugger callout
-    loadWordDisp(cUnit, rSELF,
-                 ENTRYPOINT_OFFSET(pUpdateDebuggerFromCode), rSUSPEND);
-    genDebuggerUpdate(cUnit, DEBUGGER_METHOD_ENTRY);
-  }
-
   oatFreeTemp(cUnit, rARG0);
   oatFreeTemp(cUnit, rARG1);
   oatFreeTemp(cUnit, rARG2);
@@ -208,10 +193,6 @@
   oatLockTemp(cUnit, rRET1);
 
   newLIR0(cUnit, kPseudoMethodExit);
-  /* If we're compiling for the debugger, generate an update callout */
-  if (cUnit->genDebugger) {
-    genDebuggerUpdate(cUnit, DEBUGGER_METHOD_EXIT);
-  }
   unSpillCoreRegs(cUnit);
   opReg(cUnit, kOpBx, r_RA);
 }
@@ -274,4 +255,27 @@
   return oatArchVariantInit();
 }
 
+bool genAndLong(CompilationUnit* cUnit, RegLocation rlDest,
+                RegLocation rlSrc1, RegLocation rlSrc2)
+{
+  LOG(FATAL) << "Unexpected use of genAndLong for Mips";
+  return false;
+}
+
+bool genOrLong(CompilationUnit* cUnit, RegLocation rlDest,
+               RegLocation rlSrc1, RegLocation rlSrc2)
+{
+  LOG(FATAL) << "Unexpected use of genOrLong for Mips";
+  return false;
+}
+
+bool genXorLong(CompilationUnit* cUnit, RegLocation rlDest,
+               RegLocation rlSrc1, RegLocation rlSrc2)
+{
+  LOG(FATAL) << "Unexpected use of genXorLong for Mips";
+  return false;
+}
+
+
+
 }  // namespace art
diff --git a/src/compiler/codegen/mips/ArchUtility.cc b/src/compiler/codegen/mips/ArchUtility.cc
index ead9ff5..f837c39 100644
--- a/src/compiler/codegen/mips/ArchUtility.cc
+++ b/src/compiler/codegen/mips/ArchUtility.cc
@@ -22,6 +22,17 @@
 
 namespace art {
 
+void setupTargetResourceMasks(CompilationUnit* cUnit, LIR* lir)
+{
+  DCHECK_EQ(cUnit->instructionSet, kMips);
+
+  // Mips-specific resource map setup here.
+  int flags = EncodingMap[lir->opcode].flags;
+  if (flags & REG_DEF_LR) {
+    lir->defMask |= ENCODE_REG_LR;
+  }
+}
+
 /* For dumping instructions */
 #define MIPS_REG_COUNT 32
 static const char *mipsRegName[MIPS_REG_COUNT] = {
diff --git a/src/compiler/codegen/mips/Codegen.h b/src/compiler/codegen/mips/Codegen.h
index 106c030..03efe03 100644
--- a/src/compiler/codegen/mips/Codegen.h
+++ b/src/compiler/codegen/mips/Codegen.h
@@ -14,13 +14,7 @@
  * limitations under the License.
  */
 
-/*
- * This file contains register alloction support and is intended to be
- * included by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains register alloction support */
 
 #include "../../CompilerIR.h"
 
@@ -94,8 +88,19 @@
 
 #endif
 
-extern void oatSetupResourceMasks(LIR* lir);
+extern void oatSetupResourceMasks(CompilationUnit* cUnit, LIR* lir);
 
 extern LIR* oatRegCopyNoInsert(CompilationUnit* cUnit, int rDest, int rSrc);
 
+bool genAddLong(CompilationUnit* cUnit, RegLocation rlDest,
+                RegLocation rlSrc1, RegLocation rlSrc2);
+bool genSubLong(CompilationUnit* cUnit, RegLocation rlDest,
+                RegLocation rlSrc1, RegLocation rlSrc2);
+bool genAndLong(CompilationUnit* cUnit, RegLocation rlDest,
+                RegLocation rlSrc1, RegLocation rlSrc2);
+bool genOrLong(CompilationUnit* cUnit, RegLocation rlDest,
+               RegLocation rlSrc1, RegLocation rlSrc2);
+bool genXorLong(CompilationUnit* cUnit, RegLocation rlDest,
+               RegLocation rlSrc1, RegLocation rlSrc2);
+
 }  // namespace art
diff --git a/src/compiler/codegen/mips/Mips32/Factory.cc b/src/compiler/codegen/mips/Mips32/Factory.cc
index 63c92eb..2f0d460 100644
--- a/src/compiler/codegen/mips/Mips32/Factory.cc
+++ b/src/compiler/codegen/mips/Mips32/Factory.cc
@@ -16,13 +16,7 @@
 
 namespace art {
 
-/*
- * This file contains codegen for the MIPS32 ISA and is intended to be
- * includes by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains codegen for the MIPS32 ISA. */
 
 static int coreRegs[] = {r_ZERO, r_AT, r_V0, r_V1, r_A0, r_A1, r_A2, r_A3,
                          r_T0, r_T1, r_T2, r_T3, r_T4, r_T5, r_T6, r_T7,
@@ -745,4 +739,47 @@
   loadWordDisp(cUnit, base, HIWORD_OFFSET , highReg);
 }
 
+LIR* opThreadMem(CompilationUnit* cUnit, OpKind op, int threadOffset)
+{
+  LOG(FATAL) << "Unexpected use of opThreadMem for MIPS";
+  return NULL;
+}
+
+LIR* opMem(CompilationUnit* cUnit, OpKind op, int rBase, int disp)
+{
+  LOG(FATAL) << "Unexpected use of opMem for MIPS";
+  return NULL;
+}
+
+LIR* storeBaseIndexedDisp(CompilationUnit *cUnit,
+                          int rBase, int rIndex, int scale, int displacement,
+                          int rSrc, int rSrcHi,
+                          OpSize size, int sReg)
+{
+  LOG(FATAL) << "Unexpected use of storeBaseIndexedDisp for MIPS";
+  return NULL;
+}
+
+LIR* opRegMem(CompilationUnit *cUnit, OpKind op, int rDest, int rBase,
+              int offset)
+{
+  LOG(FATAL) << "Unexpected use of opRegMem for MIPS";
+  return NULL;
+}
+
+LIR* loadBaseIndexedDisp(CompilationUnit *cUnit,
+                         int rBase, int rIndex, int scale, int displacement,
+                         int rDest, int rDestHi,
+                         OpSize size, int sReg)
+{
+  LOG(FATAL) << "Unexpected use of loadBaseIndexedDisp for MIPS";
+  return NULL;
+}
+
+LIR* opCondBranch(CompilationUnit* cUnit, ConditionCode cc, LIR* target)
+{
+  LOG(FATAL) << "Unexpected use of opCondBranch for MIPS";
+  return NULL;
+}
+
 }  // namespace art
diff --git a/src/compiler/codegen/mips/Mips32/Gen.cc b/src/compiler/codegen/mips/Mips32/Gen.cc
index b0cad0f..22c8b84 100644
--- a/src/compiler/codegen/mips/Mips32/Gen.cc
+++ b/src/compiler/codegen/mips/Mips32/Gen.cc
@@ -14,13 +14,7 @@
  * limitations under the License.
  */
 
-/*
- * This file contains codegen for the Mips ISA and is intended to be
- * includes by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains codegen for the Mips ISA */
 
 #include "oat/runtime/oat_support_entrypoints.h"
 
@@ -525,4 +519,147 @@
   UNIMPLEMENTED(FATAL) << "Need codegen for fused long cmp branch";
 }
 
+LIR* genRegMemCheck(CompilationUnit* cUnit, ConditionCode cCode,
+                    int reg1, int base, int offset, ThrowKind kind)
+{
+  LOG(FATAL) << "Unexpected use of genRegMemCheck for Arm";
+  return NULL;
+}
+
+RegLocation genDivRem(CompilationUnit* cUnit, RegLocation rlDest, int reg1, int reg2, bool isDiv)
+{
+  newLIR4(cUnit, kMipsDiv, r_HI, r_LO, reg1, reg2);
+  RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
+  if (isDiv) {
+    newLIR2(cUnit, kMipsMflo, rlResult.lowReg, r_LO);
+  } else {
+    newLIR2(cUnit, kMipsMfhi, rlResult.lowReg, r_HI);
+  }
+  return rlResult;
+}
+
+RegLocation genDivRemLit(CompilationUnit* cUnit, RegLocation rlDest, int reg1, int lit, bool isDiv)
+{
+  int tReg = oatAllocTemp(cUnit);
+  newLIR3(cUnit, kMipsAddiu, tReg, r_ZERO, lit);
+  newLIR4(cUnit, kMipsDiv, r_HI, r_LO, reg1, tReg);
+  RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
+  if (isDiv) {
+    newLIR2(cUnit, kMipsMflo, rlResult.lowReg, r_LO);
+  } else {
+    newLIR2(cUnit, kMipsMfhi, rlResult.lowReg, r_HI);
+  }
+  oatFreeTemp(cUnit, tReg);
+  return rlResult;
+}
+
+/*
+ * Mark garbage collection card. Skip if the value we're storing is null.
+ */
+void markGCCard(CompilationUnit* cUnit, int valReg, int tgtAddrReg)
+{
+  int regCardBase = oatAllocTemp(cUnit);
+  int regCardNo = oatAllocTemp(cUnit);
+  LIR* branchOver = opCmpImmBranch(cUnit, kCondEq, valReg, 0, NULL);
+  loadWordDisp(cUnit, rSELF, Thread::CardTableOffset().Int32Value(), regCardBase);
+  opRegRegImm(cUnit, kOpLsr, regCardNo, tgtAddrReg, CardTable::kCardShift);
+  storeBaseIndexed(cUnit, regCardBase, regCardNo, regCardBase, 0,
+                   kUnsignedByte);
+  LIR* target = newLIR0(cUnit, kPseudoTargetLabel);
+  branchOver->target = (LIR*)target;
+  oatFreeTemp(cUnit, regCardBase);
+  oatFreeTemp(cUnit, regCardNo);
+}
+
+bool genInlinedMinMaxInt(CompilationUnit *cUnit, CallInfo* info, bool isMin)
+{
+  // TODO: need Mips implementation
+  return false;
+}
+
+void opLea(CompilationUnit* cUnit, int rBase, int reg1, int reg2, int scale, int offset)
+{
+  LOG(FATAL) << "Unexpected use of opLea for Arm";
+}
+
+void opTlsCmp(CompilationUnit* cUnit, int offset, int val)
+{
+  LOG(FATAL) << "Unexpected use of opTlsCmp for Arm";
+}
+
+bool genInlinedCas32(CompilationUnit* cUnit, CallInfo* info, bool need_write_barrier) {
+  DCHECK_NE(cUnit->instructionSet, kThumb2);
+  return false;
+}
+
+bool genInlinedSqrt(CompilationUnit* cUnit, CallInfo* info) {
+  DCHECK_NE(cUnit->instructionSet, kThumb2);
+  return false;
+}
+
+LIR* opPcRelLoad(CompilationUnit* cUnit, int reg, LIR* target) {
+  LOG(FATAL) << "Unexpected use of opPcRelLoad for Mips";
+  return NULL;
+}
+
+LIR* opVldm(CompilationUnit* cUnit, int rBase, int count)
+{
+  LOG(FATAL) << "Unexpected use of opVldm for Mips";
+  return NULL;
+}
+
+LIR* opVstm(CompilationUnit* cUnit, int rBase, int count)
+{
+  LOG(FATAL) << "Unexpected use of opVstm for Mips";
+  return NULL;
+}
+
+void genMultiplyByTwoBitMultiplier(CompilationUnit* cUnit, RegLocation rlSrc,
+                                   RegLocation rlResult, int lit,
+                                   int firstBit, int secondBit)
+{
+  int tReg = oatAllocTemp(cUnit);
+  opRegRegImm(cUnit, kOpLsl, tReg, rlSrc.lowReg, secondBit - firstBit);
+  opRegRegReg(cUnit, kOpAdd, rlResult.lowReg, rlSrc.lowReg, tReg);
+  oatFreeTemp(cUnit, tReg);
+  if (firstBit != 0) {
+    opRegRegImm(cUnit, kOpLsl, rlResult.lowReg, rlResult.lowReg, firstBit);
+  }
+}
+
+void genDivZeroCheck(CompilationUnit* cUnit, int regLo, int regHi)
+{
+  int tReg = oatAllocTemp(cUnit);
+  opRegRegReg(cUnit, kOpOr, tReg, regLo, regHi);
+  genImmedCheck(cUnit, kCondEq, tReg, 0, kThrowDivZero);
+  oatFreeTemp(cUnit, tReg);
+}
+
+// Test suspend flag, return target of taken suspend branch
+LIR* opTestSuspend(CompilationUnit* cUnit, LIR* target)
+{
+  opRegImm(cUnit, kOpSub, rSUSPEND, 1);
+  return opCmpImmBranch(cUnit, (target == NULL) ? kCondEq : kCondNe, rSUSPEND, 0, target);
+}
+
+// Decrement register and branch on condition
+LIR* opDecAndBranch(CompilationUnit* cUnit, ConditionCode cCode, int reg, LIR* target)
+{
+  opRegImm(cUnit, kOpSub, reg, 1);
+  return opCmpImmBranch(cUnit, cCode, reg, 0, target);
+}
+
+bool smallLiteralDivide(CompilationUnit* cUnit, Instruction::Code dalvikOpcode,
+                        RegLocation rlSrc, RegLocation rlDest, int lit)
+{
+  LOG(FATAL) << "Unexpected use of smallLiteralDive in Mips";
+  return false;
+}
+
+LIR* opIT(CompilationUnit* cUnit, ArmConditionCode cond, const char* guide)
+{
+  LOG(FATAL) << "Unexpected use of opIT in Mips";
+  return NULL;
+}
+
 }  // namespace art
diff --git a/src/compiler/codegen/mips/Mips32/Ralloc.cc b/src/compiler/codegen/mips/Mips32/Ralloc.cc
index 9f39212..e7ad60c 100644
--- a/src/compiler/codegen/mips/Mips32/Ralloc.cc
+++ b/src/compiler/codegen/mips/Mips32/Ralloc.cc
@@ -16,13 +16,7 @@
 
 namespace art {
 
-/*
- * This file contains codegen for the Mips ISA and is intended to be
- * includes by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains codegen for the Mips ISA */
 
 /*
  * Alloc a pair of core registers, or a double.  Low reg in low byte,
@@ -88,8 +82,7 @@
   oatInitPool(pool->FPRegs, fpRegs, pool->numFPRegs);
   // Keep special registers from being allocated
   for (int i = 0; i < numReserved; i++) {
-    if (NO_SUSPEND && !cUnit->genDebugger &&
-      (reservedRegs[i] == rSUSPEND)) {
+    if (NO_SUSPEND && (reservedRegs[i] == rSUSPEND)) {
       //To measure cost of suspend check
       continue;
     }
diff --git a/src/compiler/codegen/mips/MipsLIR.h b/src/compiler/codegen/mips/MipsLIR.h
index 4b7da55..a175706 100644
--- a/src/compiler/codegen/mips/MipsLIR.h
+++ b/src/compiler/codegen/mips/MipsLIR.h
@@ -146,6 +146,9 @@
 #define r_FRESULT0 r_F0
 #define r_FRESULT1 r_F1
 
+/* Regs not used for Mips */
+#define rLR INVALID_REG
+
 /* RegisterLocation templates return values (r_V0, or r_V0/r_V1) */
 #define LOC_C_RETURN {kLocPhysReg, 0, 0, 0, 0, 0, 0, 0, 1, r_V0, INVALID_REG, \
                       INVALID_SREG, INVALID_SREG}
@@ -308,6 +311,7 @@
 #define rRET0 r_RESULT0
 #define rRET1 r_RESULT1
 #define rINVOKE_TGT r_T9
+#define rCOUNT INVALID_REG
 
 /* Shift encodings */
 enum MipsShiftEncodings {
@@ -337,26 +341,7 @@
  * Assemble.cc.
  */
 enum MipsOpCode {
-  kPseudoExportedPC = -18,
-  kPseudoSafepointPC = -17,
-  kPseudoIntrinsicRetry = -16,
-  kPseudoSuspendTarget = -15,
-  kPseudoThrowTarget = -14,
-  kPseudoCaseLabel = -13,
-  kPseudoMethodEntry = -12,
-  kPseudoMethodExit = -11,
-  kPseudoBarrier = -10,
-  kPseudoExtended = -9,
-  kPseudoSSARep = -8,
-  kPseudoEntryBlock = -7,
-  kPseudoExitBlock = -6,
-  kPseudoTargetLabel = -5,
-  kPseudoDalvikByteCodeBoundary = -4,
-  kPseudoPseudoAlign4 = -3,
-  kPseudoEHBlockLabel = -2,
-  kPseudoNormalBlockLabel = -1,
-
-  kMipsFirst,
+  kMipsFirst = 0,
   kMips32BitData = kMipsFirst, /* data [31..0] */
   kMipsAddiu, /* addiu t,s,imm16 [001001] s[25..21] t[20..16] imm16[15..0] */
   kMipsAddu,  /* add d,s,t [000000] s[25..21] t[20..16] d[15..11] [00000100001] */
diff --git a/src/compiler/codegen/mips/mips/Codegen.cc b/src/compiler/codegen/mips/mips/Codegen.cc
index 60a7646..0c726d3 100644
--- a/src/compiler/codegen/mips/mips/Codegen.cc
+++ b/src/compiler/codegen/mips/mips/Codegen.cc
@@ -15,7 +15,6 @@
  */
 
 #define _CODEGEN_C
-#define TARGET_MIPS
 
 #include "../../../Dalvik.h"
 #include "../../../CompilerInternals.h"
diff --git a/src/compiler/codegen/x86/ArchFactory.cc b/src/compiler/codegen/x86/ArchFactory.cc
index 001a93d..1fc1034 100644
--- a/src/compiler/codegen/x86/ArchFactory.cc
+++ b/src/compiler/codegen/x86/ArchFactory.cc
@@ -14,13 +14,7 @@
  * limitations under the License.
  */
 
-/*
- * This file contains x86-specific codegen factory support.
- * It is included by
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains x86-specific codegen factory support. */
 
 namespace art {
 
@@ -120,8 +114,6 @@
   return false;
 }
 
-void genDebuggerUpdate(CompilationUnit* cUnit, int32_t offset);
-
 void spillCoreRegs(CompilationUnit* cUnit) {
   if (cUnit->numCoreSpills == 0) {
     return;
@@ -202,16 +194,6 @@
 
   flushIns(cUnit, argLocs, rlMethod);
 
-  if (cUnit->genDebugger) {
-    // Refresh update debugger callout
-    UNIMPLEMENTED(WARNING) << "genDebugger";
-#if 0
-    loadWordDisp(cUnit, rSELF,
-           OFFSETOF_MEMBER(Thread, pUpdateDebuggerFromCode), rSUSPEND);
-    genDebuggerUpdate(cUnit, DEBUGGER_METHOD_ENTRY);
-#endif
-  }
-
   oatFreeTemp(cUnit, rARG0);
   oatFreeTemp(cUnit, rARG1);
   oatFreeTemp(cUnit, rARG2);
@@ -226,10 +208,6 @@
   oatLockTemp(cUnit, rRET1);
 
   newLIR0(cUnit, kPseudoMethodExit);
-  /* If we're compiling for the debugger, generate an update callout */
-  if (cUnit->genDebugger) {
-  genDebuggerUpdate(cUnit, DEBUGGER_METHOD_EXIT);
-  }
   unSpillCoreRegs(cUnit);
   /* Remove frame except for return address */
   opRegImm(cUnit, kOpAdd, rSP, cUnit->frameSize - 4);
@@ -292,4 +270,13 @@
   return oatArchVariantInit();
 }
 
+// Not used in x86
+int loadHelper(CompilationUnit* cUnit, int offset)
+{
+  LOG(FATAL) << "Unexpected use of loadHelper in x86";
+  return INVALID_REG;
+}
+
+
+
 }  // namespace art
diff --git a/src/compiler/codegen/x86/ArchUtility.cc b/src/compiler/codegen/x86/ArchUtility.cc
index 4e75ef2..4c28b35 100644
--- a/src/compiler/codegen/x86/ArchUtility.cc
+++ b/src/compiler/codegen/x86/ArchUtility.cc
@@ -22,6 +22,32 @@
 
 namespace art {
 
+void setupTargetResourceMasks(CompilationUnit* cUnit, LIR* lir)
+{
+  DCHECK_EQ(cUnit->instructionSet, kX86);
+
+  // X86-specific resource map setup here.
+  int flags = EncodingMap[lir->opcode].flags;
+  if (flags & REG_DEFA) {
+    oatSetupRegMask(cUnit, &lir->defMask, rAX);
+  }
+
+  if (flags & REG_DEFD) {
+    oatSetupRegMask(cUnit, &lir->defMask, rDX);
+  }
+  if (flags & REG_USEA) {
+    oatSetupRegMask(cUnit, &lir->useMask, rAX);
+  }
+
+  if (flags & REG_USEC) {
+    oatSetupRegMask(cUnit, &lir->useMask, rCX);
+  }
+
+  if (flags & REG_USED) {
+    oatSetupRegMask(cUnit, &lir->useMask, rDX);
+  }
+}
+
 /* For dumping instructions */
 static const char* x86RegName[] = {
   "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
diff --git a/src/compiler/codegen/x86/Assemble.cc b/src/compiler/codegen/x86/Assemble.cc
index 2522283..c47711c 100644
--- a/src/compiler/codegen/x86/Assemble.cc
+++ b/src/compiler/codegen/x86/Assemble.cc
@@ -1225,7 +1225,7 @@
                   << " delta: " << delta << " old delta: " << lir->operands[0];
             }
             lir->opcode = kX86Jcc32;
-            oatSetupResourceMasks(lir);
+            oatSetupResourceMasks(cUnit, lir);
             res = kRetryAll;
           }
           if (kVerbosePcFixup) {
@@ -1278,7 +1278,7 @@
               LOG(INFO) << "Retry for JMP growth at " << lir->offset;
             }
             lir->opcode = kX86Jmp32;
-            oatSetupResourceMasks(lir);
+            oatSetupResourceMasks(cUnit, lir);
             res = kRetryAll;
           }
           lir->operands[0] = delta;
diff --git a/src/compiler/codegen/x86/Codegen.h b/src/compiler/codegen/x86/Codegen.h
index 568a388..3755e50 100644
--- a/src/compiler/codegen/x86/Codegen.h
+++ b/src/compiler/codegen/x86/Codegen.h
@@ -14,13 +14,7 @@
  * limitations under the License.
  */
 
-/*
- * This file contains register alloction support and is intended to be
- * included by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains register alloction support */
 
 #include "../../CompilerIR.h"
 
@@ -101,7 +95,7 @@
 
 #endif
 
-extern void oatSetupResourceMasks(LIR* lir);
+extern void oatSetupResourceMasks(CompilationUnit* cUnit, LIR* lir);
 
 extern LIR* oatRegCopyNoInsert(CompilationUnit* cUnit, int rDest, int rSrc);
 
diff --git a/src/compiler/codegen/x86/X86/Factory.cc b/src/compiler/codegen/x86/X86/Factory.cc
index 291b761..3da7672 100644
--- a/src/compiler/codegen/x86/X86/Factory.cc
+++ b/src/compiler/codegen/x86/X86/Factory.cc
@@ -16,13 +16,7 @@
 
 namespace art {
 
-/*
- * This file contains codegen for the X86 ISA and is intended to be
- * includes by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains codegen for the X86 ISA */
 
 //FIXME: restore "static" when usage uncovered
 /*static*/ int coreRegs[] = {
diff --git a/src/compiler/codegen/x86/X86/Gen.cc b/src/compiler/codegen/x86/X86/Gen.cc
index 28c6914..b57acac 100644
--- a/src/compiler/codegen/x86/X86/Gen.cc
+++ b/src/compiler/codegen/x86/X86/Gen.cc
@@ -14,13 +14,7 @@
  * limitations under the License.
  */
 
-/*
- * This file contains codegen for the X86 ISA and is intended to be
- * includes by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains codegen for the X86 ISA */
 
 namespace art {
 
@@ -418,5 +412,140 @@
   }
   opCondBranch(cUnit, ccode, taken);
 }
+RegLocation genDivRemLit(CompilationUnit* cUnit, RegLocation rlDest, int regLo, int lit, bool isDiv)
+{
+  LOG(FATAL) << "Unexpected use of genDivRemLit for x86";
+  return rlDest;
+}
+
+RegLocation genDivRem(CompilationUnit* cUnit, RegLocation rlDest, int regLo, int regHi, bool isDiv)
+{
+  LOG(FATAL) << "Unexpected use of genDivRem for x86";
+  return rlDest;
+}
+
+/*
+ * Mark garbage collection card. Skip if the value we're storing is null.
+ */
+void markGCCard(CompilationUnit* cUnit, int valReg, int tgtAddrReg)
+{
+  int regCardBase = oatAllocTemp(cUnit);
+  int regCardNo = oatAllocTemp(cUnit);
+  LIR* branchOver = opCmpImmBranch(cUnit, kCondEq, valReg, 0, NULL);
+  newLIR2(cUnit, kX86Mov32RT, regCardBase, Thread::CardTableOffset().Int32Value());
+  opRegRegImm(cUnit, kOpLsr, regCardNo, tgtAddrReg, CardTable::kCardShift);
+  storeBaseIndexed(cUnit, regCardBase, regCardNo, regCardBase, 0,
+                   kUnsignedByte);
+  LIR* target = newLIR0(cUnit, kPseudoTargetLabel);
+  branchOver->target = (LIR*)target;
+  oatFreeTemp(cUnit, regCardBase);
+  oatFreeTemp(cUnit, regCardNo);
+}
+
+bool genInlinedMinMaxInt(CompilationUnit *cUnit, CallInfo* info, bool isMin)
+{
+  DCHECK_EQ(cUnit->instructionSet, kX86);
+  RegLocation rlSrc1 = info->args[0];
+  RegLocation rlSrc2 = info->args[1];
+  rlSrc1 = loadValue(cUnit, rlSrc1, kCoreReg);
+  rlSrc2 = loadValue(cUnit, rlSrc2, kCoreReg);
+  RegLocation rlDest = inlineTarget(cUnit, info);
+  RegLocation rlResult = oatEvalLoc(cUnit, rlDest, kCoreReg, true);
+  opRegReg(cUnit, kOpCmp, rlSrc1.lowReg, rlSrc2.lowReg);
+  DCHECK_EQ(cUnit->instructionSet, kX86);
+  LIR* branch = newLIR2(cUnit, kX86Jcc8, 0, isMin ? kX86CondG : kX86CondL);
+  opRegReg(cUnit, kOpMov, rlResult.lowReg, rlSrc1.lowReg);
+  LIR* branch2 = newLIR1(cUnit, kX86Jmp8, 0);
+  branch->target = newLIR0(cUnit, kPseudoTargetLabel);
+  opRegReg(cUnit, kOpMov, rlResult.lowReg, rlSrc2.lowReg);
+  branch2->target = newLIR0(cUnit, kPseudoTargetLabel);
+  storeValue(cUnit, rlDest, rlResult);
+  return true;
+}
+
+void opLea(CompilationUnit* cUnit, int rBase, int reg1, int reg2, int scale, int offset)
+{
+  newLIR5(cUnit, kX86Lea32RA, rBase, reg1, reg2, scale, offset);
+}
+
+void opTlsCmp(CompilationUnit* cUnit, int offset, int val)
+{
+  newLIR2(cUnit, kX86Cmp16TI8, offset, val);
+}
+
+bool genInlinedCas32(CompilationUnit* cUnit, CallInfo* info, bool need_write_barrier) {
+  DCHECK_NE(cUnit->instructionSet, kThumb2);
+  return false;
+}
+
+bool genInlinedSqrt(CompilationUnit* cUnit, CallInfo* info) {
+  DCHECK_NE(cUnit->instructionSet, kThumb2);
+  return false;
+}
+
+LIR* opPcRelLoad(CompilationUnit* cUnit, int reg, LIR* target) {
+  LOG(FATAL) << "Unexpected use of opPcRelLoad for x86";
+  return NULL;
+}
+
+LIR* opVldm(CompilationUnit* cUnit, int rBase, int count)
+{
+  LOG(FATAL) << "Unexpected use of opVldm for x86";
+  return NULL;
+}
+
+LIR* opVstm(CompilationUnit* cUnit, int rBase, int count)
+{
+  LOG(FATAL) << "Unexpected use of opVstm for x86";
+  return NULL;
+}
+
+void genMultiplyByTwoBitMultiplier(CompilationUnit* cUnit, RegLocation rlSrc,
+                                   RegLocation rlResult, int lit,
+                                   int firstBit, int secondBit)
+{
+  int tReg = oatAllocTemp(cUnit);
+  opRegRegImm(cUnit, kOpLsl, tReg, rlSrc.lowReg, secondBit - firstBit);
+  opRegRegReg(cUnit, kOpAdd, rlResult.lowReg, rlSrc.lowReg, tReg);
+  oatFreeTemp(cUnit, tReg);
+  if (firstBit != 0) {
+    opRegRegImm(cUnit, kOpLsl, rlResult.lowReg, rlResult.lowReg, firstBit);
+  }
+}
+
+void genDivZeroCheck(CompilationUnit* cUnit, int regLo, int regHi)
+{
+  int tReg = oatAllocTemp(cUnit);
+  opRegRegReg(cUnit, kOpOr, tReg, regLo, regHi);
+  genImmedCheck(cUnit, kCondEq, tReg, 0, kThrowDivZero);
+  oatFreeTemp(cUnit, tReg);
+}
+
+// Test suspend flag, return target of taken suspend branch
+LIR* opTestSuspend(CompilationUnit* cUnit, LIR* target)
+{
+  opTlsCmp(cUnit, Thread::ThreadFlagsOffset().Int32Value(), 0);
+  return opCondBranch(cUnit, (target == NULL) ? kCondNe : kCondEq, target);
+}
+
+// Decrement register and branch on condition
+LIR* opDecAndBranch(CompilationUnit* cUnit, ConditionCode cCode, int reg, LIR* target)
+{
+  opRegImm(cUnit, kOpSub, reg, 1);
+  return opCmpImmBranch(cUnit, cCode, reg, 0, target);
+}
+
+bool smallLiteralDivide(CompilationUnit* cUnit, Instruction::Code dalvikOpcode,
+                        RegLocation rlSrc, RegLocation rlDest, int lit)
+{
+  LOG(FATAL) << "Unexpected use of smallLiteralDive in x86";
+  return false;
+}
+
+LIR* opIT(CompilationUnit* cUnit, ArmConditionCode cond, const char* guide)
+{
+  LOG(FATAL) << "Unexpected use of opIT in x86";
+  return NULL;
+}
 
 }  // namespace art
diff --git a/src/compiler/codegen/x86/X86/Ralloc.cc b/src/compiler/codegen/x86/X86/Ralloc.cc
index 2886b8f..ef72e52 100644
--- a/src/compiler/codegen/x86/X86/Ralloc.cc
+++ b/src/compiler/codegen/x86/X86/Ralloc.cc
@@ -16,13 +16,7 @@
 
 namespace art {
 
-/*
- * This file contains codegen for the X86 ISA and is intended to be
- * includes by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains codegen for the X86 ISA */
 
 /*
  * Alloc a pair of core registers, or a double.  Low reg in low byte,
diff --git a/src/compiler/codegen/x86/X86LIR.h b/src/compiler/codegen/x86/X86LIR.h
index 8ad014a..9a5d630 100644
--- a/src/compiler/codegen/x86/X86LIR.h
+++ b/src/compiler/codegen/x86/X86LIR.h
@@ -175,6 +175,8 @@
 
 #define DECODE_ALIAS_INFO_REG(X)        (X & 0xffff)
 #define DECODE_ALIAS_INFO_WIDE(X)       ((X & 0x80000000) ? 1 : 0)
+/* Not used for x86 */
+#define ENCODE_REG_PC           (ENCODE_ALL)
 
 /*
  * Annotate special-purpose core registers:
@@ -245,81 +247,20 @@
 #define rRET0 rAX
 #define rRET1 rDX
 #define rINVOKE_TGT rAX
+#define rLR INVALID_REG
+#define rSUSPEND INVALID_REG
+#define rSELF INVALID_REG
+#define rCOUNT rCX
 
 #define isPseudoOpcode(opCode) ((int)(opCode) < 0)
 
-/* X86 condition encodings */
-enum X86ConditionCode {
-  kX86CondO   = 0x0,    // overflow
-  kX86CondNo  = 0x1,    // not overflow
-
-  kX86CondB   = 0x2,    // below
-  kX86CondNae = kX86CondB,  // not-above-equal
-  kX86CondC   = kX86CondB,  // carry
-
-  kX86CondNb  = 0x3,    // not-below
-  kX86CondAe  = kX86CondNb, // above-equal
-  kX86CondNc  = kX86CondNb, // not-carry
-
-  kX86CondZ   = 0x4,    // zero
-  kX86CondEq  = kX86CondZ,  // equal
-
-  kX86CondNz  = 0x5,    // not-zero
-  kX86CondNe  = kX86CondNz, // not-equal
-
-  kX86CondBe  = 0x6,    // below-equal
-  kX86CondNa  = kX86CondBe, // not-above
-
-  kX86CondNbe = 0x7,    // not-below-equal
-  kX86CondA   = kX86CondNbe,// above
-
-  kX86CondS   = 0x8,    // sign
-  kX86CondNs  = 0x9,    // not-sign
-
-  kX86CondP   = 0xA,    // 8-bit parity even
-  kX86CondPE  = kX86CondP,
-
-  kX86CondNp  = 0xB,    // 8-bit parity odd
-  kX86CondPo  = kX86CondNp,
-
-  kX86CondL   = 0xC,    // less-than
-  kX86CondNge = kX86CondL,  // not-greater-equal
-
-  kX86CondNl  = 0xD,    // not-less-than
-  kX86CondGe  = kX86CondNl, // not-greater-equal
-
-  kX86CondLe  = 0xE,    // less-than-equal
-  kX86CondNg  = kX86CondLe, // not-greater
-
-  kX86CondNle = 0xF,    // not-less-than
-  kX86CondG   = kX86CondNle,// greater
-};
-
 /*
  * The following enum defines the list of supported X86 instructions by the
  * assembler. Their corresponding EncodingMap positions will be defined in
  * Assemble.cc.
  */
 enum X86OpCode {
-  kPseudoExportedPC = -18,
-  kPseudoSafepointPC = -17,
-  kPseudoIntrinsicRetry = -16,
-  kPseudoSuspendTarget = -15,
-  kPseudoThrowTarget = -14,
-  kPseudoCaseLabel = -13,
-  kPseudoMethodEntry = -12,
-  kPseudoMethodExit = -11,
-  kPseudoBarrier = -10,
-  kPseudoExtended = -9,
-  kPseudoSSARep = -8,
-  kPseudoEntryBlock = -7,
-  kPseudoExitBlock = -6,
-  kPseudoTargetLabel = -5,
-  kPseudoDalvikByteCodeBoundary = -4,
-  kPseudoPseudoAlign4 = -3,
-  kPseudoEHBlockLabel = -2,
-  kPseudoNormalBlockLabel = -1,
-  kX86First,
+  kX86First = 0,
   kX8632BitData = kX86First, /* data [31..0] */
   kX86Bkpt,
   kX86Nop,
diff --git a/src/compiler/codegen/x86/x86/Codegen.cc b/src/compiler/codegen/x86/x86/Codegen.cc
index 0552ce3..744a7d2 100644
--- a/src/compiler/codegen/x86/x86/Codegen.cc
+++ b/src/compiler/codegen/x86/x86/Codegen.cc
@@ -15,7 +15,6 @@
  */
 
 #define _CODEGEN_C
-#define TARGET_X86
 
 #include "../../../Dalvik.h"
 #include "../../../CompilerInternals.h"