Quick backend: rename target-specific #defines

Another step towards a single compiler.  The #include build mechanism
relies on macros with the same name to take on different values for
our various targets.  This CL prepends a target-specific string
(and exposes some needed by common code as functions rather than #defines).

Macros and #defines still available for use from target-dependent code,
but functions added for target independent use.  For example,
rRET0 for Arm becomes rARM_RET0 in target-dependent code, and
targetRegister(kRet0) in target-independent code.

No logic changes, other than adding functions to return previously #defined
values.  As of this CL, the primary target includes, xxxLIR.h, have no
macro collisions.

Change-Id: I5e11df844815b7d129b525a209dd7c46bd9a4a09
diff --git a/src/compiler/codegen/x86/X86RallocUtil.cc b/src/compiler/codegen/x86/X86RallocUtil.cc
index 58ad25a..caf4e08 100644
--- a/src/compiler/codegen/x86/X86RallocUtil.cc
+++ b/src/compiler/codegen/x86/X86RallocUtil.cc
@@ -65,7 +65,7 @@
     if (SRegToVReg(cUnit, info2->sReg) < SRegToVReg(cUnit, info1->sReg))
       info1 = info2;
     int vReg = SRegToVReg(cUnit, info1->sReg);
-    oatFlushRegWideImpl(cUnit, rSP, oatVRegOffset(cUnit, vReg),
+    oatFlushRegWideImpl(cUnit, rX86_SP, oatVRegOffset(cUnit, vReg),
                         info1->reg, info1->partner);
   }
 }
@@ -76,17 +76,17 @@
   if (info->live && info->dirty) {
     info->dirty = false;
     int vReg = SRegToVReg(cUnit, info->sReg);
-    oatFlushRegImpl(cUnit, rSP, oatVRegOffset(cUnit, vReg), reg, kWord);
+    oatFlushRegImpl(cUnit, rX86_SP, oatVRegOffset(cUnit, vReg), reg, kWord);
   }
 }
 
 /* Give access to the target-dependent FP register encoding to common code */
 bool oatIsFpReg(int reg) {
-  return FPREG(reg);
+  return X86_FPREG(reg);
 }
 
 uint32_t oatFpRegMask() {
-  return FP_REG_MASK;
+  return X86_FP_REG_MASK;
 }
 
 /* Clobber all regs that might be used by an external C call */
@@ -98,7 +98,7 @@
 }
 
 extern RegLocation oatGetReturnWideAlt(CompilationUnit* cUnit) {
-  RegLocation res = LOC_C_RETURN_WIDE;
+  RegLocation res = locCReturnWide();
   CHECK(res.lowReg == rAX);
   CHECK(res.highReg == rDX);
   oatClobber(cUnit, rAX);
@@ -111,7 +111,7 @@
 
 extern RegLocation oatGetReturnAlt(CompilationUnit* cUnit)
 {
-  RegLocation res = LOC_C_RETURN;
+  RegLocation res = locCReturn();
   res.lowReg = rDX;
   oatClobber(cUnit, rDX);
   oatMarkInUse(cUnit, rDX);
@@ -120,26 +120,26 @@
 
 extern RegisterInfo* oatGetRegInfo(CompilationUnit* cUnit, int reg)
 {
-  return FPREG(reg) ? &cUnit->regPool->FPRegs[reg & FP_REG_MASK]
+  return X86_FPREG(reg) ? &cUnit->regPool->FPRegs[reg & X86_FP_REG_MASK]
                     : &cUnit->regPool->coreRegs[reg];
 }
 
 /* To be used when explicitly managing register use */
 extern void oatLockCallTemps(CompilationUnit* cUnit)
 {
-  oatLockTemp(cUnit, rARG0);
-  oatLockTemp(cUnit, rARG1);
-  oatLockTemp(cUnit, rARG2);
-  oatLockTemp(cUnit, rARG3);
+  oatLockTemp(cUnit, rX86_ARG0);
+  oatLockTemp(cUnit, rX86_ARG1);
+  oatLockTemp(cUnit, rX86_ARG2);
+  oatLockTemp(cUnit, rX86_ARG3);
 }
 
 /* To be used when explicitly managing register use */
 extern void oatFreeCallTemps(CompilationUnit* cUnit)
 {
-  oatFreeTemp(cUnit, rARG0);
-  oatFreeTemp(cUnit, rARG1);
-  oatFreeTemp(cUnit, rARG2);
-  oatFreeTemp(cUnit, rARG3);
+  oatFreeTemp(cUnit, rX86_ARG0);
+  oatFreeTemp(cUnit, rX86_ARG1);
+  oatFreeTemp(cUnit, rX86_ARG2);
+  oatFreeTemp(cUnit, rX86_ARG3);
 }
 
 /* Convert an instruction to a NOP */