Merge "Support CMOV for x86 Select"
diff --git a/compiler/driver/compiled_method_storage.cc b/compiler/driver/compiled_method_storage.cc
index bc5c6ca..510613e 100644
--- a/compiler/driver/compiled_method_storage.cc
+++ b/compiler/driver/compiled_method_storage.cc
@@ -190,7 +190,8 @@
 
 void CompiledMethodStorage::DumpMemoryUsage(std::ostream& os, bool extended) const {
   if (swap_space_.get() != nullptr) {
-    os << " swap=" << PrettySize(swap_space_->GetSize());
+    const size_t swap_size = swap_space_->GetSize();
+    os << " swap=" << PrettySize(swap_size) << " (" << swap_size << "B)";
   }
   if (extended) {
     Thread* self = Thread::Current();
diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index f078bf6..670fe94 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -2732,16 +2732,18 @@
 std::string CompilerDriver::GetMemoryUsageString(bool extended) const {
   std::ostringstream oss;
   Runtime* const runtime = Runtime::Current();
-  const ArenaPool* arena_pool = runtime->GetArenaPool();
-  gc::Heap* const heap = runtime->GetHeap();
-  oss << "arena alloc=" << PrettySize(arena_pool->GetBytesAllocated());
-  oss << " java alloc=" << PrettySize(heap->GetBytesAllocated());
+  const ArenaPool* const arena_pool = runtime->GetArenaPool();
+  const gc::Heap* const heap = runtime->GetHeap();
+  const size_t arena_alloc = arena_pool->GetBytesAllocated();
+  const size_t java_alloc = heap->GetBytesAllocated();
+  oss << "arena alloc=" << PrettySize(arena_alloc) << " (" << arena_alloc << "B)";
+  oss << " java alloc=" << PrettySize(java_alloc) << " (" << java_alloc << "B)";
 #if defined(__BIONIC__) || defined(__GLIBC__)
-  struct mallinfo info = mallinfo();
+  const struct mallinfo info = mallinfo();
   const size_t allocated_space = static_cast<size_t>(info.uordblks);
   const size_t free_space = static_cast<size_t>(info.fordblks);
-  oss << " native alloc=" << PrettySize(allocated_space) << " free="
-      << PrettySize(free_space);
+  oss << " native alloc=" << PrettySize(allocated_space) << " (" << allocated_space << "B)"
+      << " free=" << PrettySize(free_space) << " (" << free_space << "B)";
 #endif
   compiled_method_storage_.DumpMemoryUsage(oss, extended);
   return oss.str();
diff --git a/compiler/optimizing/code_generator_x86.cc b/compiler/optimizing/code_generator_x86.cc
index ae5679e..f032f51 100644
--- a/compiler/optimizing/code_generator_x86.cc
+++ b/compiler/optimizing/code_generator_x86.cc
@@ -1275,7 +1275,7 @@
     }
     // Must be equal high, so compare the lows.
     codegen_->Compare32BitValue(left_low, val_low);
-  } else {
+  } else if (right.IsRegisterPair()) {
     Register right_high = right.AsRegisterPairHigh<Register>();
     Register right_low = right.AsRegisterPairLow<Register>();
 
@@ -1290,6 +1290,19 @@
     }
     // Must be equal high, so compare the lows.
     __ cmpl(left_low, right_low);
+  } else {
+    DCHECK(right.IsDoubleStackSlot());
+    __ cmpl(left_high, Address(ESP, right.GetHighStackIndex(kX86WordSize)));
+    if (if_cond == kCondNE) {
+      __ j(X86Condition(true_high_cond), true_label);
+    } else if (if_cond == kCondEQ) {
+      __ j(X86Condition(false_high_cond), false_label);
+    } else {
+      __ j(X86Condition(true_high_cond), true_label);
+      __ j(X86Condition(false_high_cond), false_label);
+    }
+    // Must be equal high, so compare the lows.
+    __ cmpl(left_low, Address(ESP, right.GetStackIndex()));
   }
   // The last comparison might be unsigned.
   __ j(final_condition, true_label);
@@ -1693,7 +1706,7 @@
   switch (cond->InputAt(0)->GetType()) {
     case Primitive::kPrimLong: {
       locations->SetInAt(0, Location::RequiresRegister());
-      locations->SetInAt(1, Location::RegisterOrConstant(cond->InputAt(1)));
+      locations->SetInAt(1, Location::Any());
       if (!cond->IsEmittedAtUseSite()) {
         locations->SetOut(Location::RequiresRegister());
       }
diff --git a/compiler/optimizing/inliner.cc b/compiler/optimizing/inliner.cc
index 68e96fb..a5acab8 100644
--- a/compiler/optimizing/inliner.cc
+++ b/compiler/optimizing/inliner.cc
@@ -258,8 +258,9 @@
   }
 
   if (actual_method != nullptr) {
-    return TryInline(invoke_instruction, actual_method);
+    return TryInlineAndReplace(invoke_instruction, actual_method, /* do_rtp */ true);
   }
+
   DCHECK(!invoke_instruction->IsInvokeStaticOrDirect());
 
   // Check if we can use an inline cache.
@@ -344,7 +345,7 @@
   HInstruction* cursor = invoke_instruction->GetPrevious();
   HBasicBlock* bb_cursor = invoke_instruction->GetBlock();
 
-  if (!TryInline(invoke_instruction, resolved_method, /* do_rtp */ false)) {
+  if (!TryInlineAndReplace(invoke_instruction, resolved_method, /* do_rtp */ false)) {
     return false;
   }
 
@@ -431,7 +432,7 @@
   HInstruction* cursor = invoke_instruction->GetPrevious();
   HBasicBlock* bb_cursor = invoke_instruction->GetBlock();
 
-  if (!TryInline(invoke_instruction, actual_method, /* do_rtp */ false)) {
+  if (!TryInlineAndReplace(invoke_instruction, actual_method, /* do_rtp */ false)) {
     return false;
   }
 
@@ -485,14 +486,29 @@
   return true;
 }
 
-bool HInliner::TryInline(HInvoke* invoke_instruction, ArtMethod* method, bool do_rtp) {
+bool HInliner::TryInlineAndReplace(HInvoke* invoke_instruction, ArtMethod* method, bool do_rtp) {
+  HInstruction* return_replacement = nullptr;
+  if (!TryBuildAndInline(invoke_instruction, method, &return_replacement)) {
+    return false;
+  }
+  if (return_replacement != nullptr) {
+    invoke_instruction->ReplaceWith(return_replacement);
+  }
+  invoke_instruction->GetBlock()->RemoveInstruction(invoke_instruction);
+  FixUpReturnReferenceType(invoke_instruction, method, return_replacement, do_rtp);
+  return true;
+}
+
+bool HInliner::TryBuildAndInline(HInvoke* invoke_instruction,
+                                 ArtMethod* method,
+                                 HInstruction** return_replacement) {
   const DexFile& caller_dex_file = *caller_compilation_unit_.GetDexFile();
 
   // Check whether we're allowed to inline. The outermost compilation unit is the relevant
   // dex file here (though the transitivity of an inline chain would allow checking the calller).
   if (!compiler_driver_->MayInline(method->GetDexFile(),
                                    outer_compilation_unit_.GetDexFile())) {
-    if (TryPatternSubstitution(invoke_instruction, method, do_rtp)) {
+    if (TryPatternSubstitution(invoke_instruction, method, return_replacement)) {
       VLOG(compiler) << "Successfully replaced pattern of invoke " << PrettyMethod(method);
       MaybeRecordStat(kReplacedInvokeWithSimplePattern);
       return true;
@@ -559,7 +575,7 @@
     return false;
   }
 
-  if (!TryBuildAndInline(method, invoke_instruction, same_dex_file, do_rtp)) {
+  if (!TryBuildAndInlineHelper(invoke_instruction, method, same_dex_file, return_replacement)) {
     return false;
   }
 
@@ -586,27 +602,27 @@
 // Try to recognize known simple patterns and replace invoke call with appropriate instructions.
 bool HInliner::TryPatternSubstitution(HInvoke* invoke_instruction,
                                       ArtMethod* resolved_method,
-                                      bool do_rtp) {
+                                      HInstruction** return_replacement) {
   InlineMethod inline_method;
   if (!InlineMethodAnalyser::AnalyseMethodCode(resolved_method, &inline_method)) {
     return false;
   }
 
-  HInstruction* return_replacement = nullptr;
   switch (inline_method.opcode) {
     case kInlineOpNop:
       DCHECK_EQ(invoke_instruction->GetType(), Primitive::kPrimVoid);
+      *return_replacement = nullptr;
       break;
     case kInlineOpReturnArg:
-      return_replacement = GetInvokeInputForArgVRegIndex(invoke_instruction,
-                                                         inline_method.d.return_data.arg);
+      *return_replacement = GetInvokeInputForArgVRegIndex(invoke_instruction,
+                                                          inline_method.d.return_data.arg);
       break;
     case kInlineOpNonWideConst:
       if (resolved_method->GetShorty()[0] == 'L') {
         DCHECK_EQ(inline_method.d.data, 0u);
-        return_replacement = graph_->GetNullConstant();
+        *return_replacement = graph_->GetNullConstant();
       } else {
-        return_replacement = graph_->GetIntConstant(static_cast<int32_t>(inline_method.d.data));
+        *return_replacement = graph_->GetIntConstant(static_cast<int32_t>(inline_method.d.data));
       }
       break;
     case kInlineOpIGet: {
@@ -621,7 +637,7 @@
       DCHECK_EQ(iget->GetFieldOffset().Uint32Value(), data.field_offset);
       DCHECK_EQ(iget->IsVolatile() ? 1u : 0u, data.is_volatile);
       invoke_instruction->GetBlock()->InsertInstructionBefore(iget, invoke_instruction);
-      return_replacement = iget;
+      *return_replacement = iget;
       break;
     }
     case kInlineOpIPut: {
@@ -639,7 +655,7 @@
       invoke_instruction->GetBlock()->InsertInstructionBefore(iput, invoke_instruction);
       if (data.return_arg_plus1 != 0u) {
         size_t return_arg = data.return_arg_plus1 - 1u;
-        return_replacement = GetInvokeInputForArgVRegIndex(invoke_instruction, return_arg);
+        *return_replacement = GetInvokeInputForArgVRegIndex(invoke_instruction, return_arg);
       }
       break;
     }
@@ -694,19 +710,13 @@
         HMemoryBarrier* barrier = new (graph_->GetArena()) HMemoryBarrier(kStoreStore, kNoDexPc);
         invoke_instruction->GetBlock()->InsertInstructionBefore(barrier, invoke_instruction);
       }
+      *return_replacement = nullptr;
       break;
     }
     default:
       LOG(FATAL) << "UNREACHABLE";
       UNREACHABLE();
   }
-
-  if (return_replacement != nullptr) {
-    invoke_instruction->ReplaceWith(return_replacement);
-  }
-  invoke_instruction->GetBlock()->RemoveInstruction(invoke_instruction);
-
-  FixUpReturnReferenceType(resolved_method, invoke_instruction, return_replacement, do_rtp);
   return true;
 }
 
@@ -760,10 +770,10 @@
   return iput;
 }
 
-bool HInliner::TryBuildAndInline(ArtMethod* resolved_method,
-                                 HInvoke* invoke_instruction,
-                                 bool same_dex_file,
-                                 bool do_rtp) {
+bool HInliner::TryBuildAndInlineHelper(HInvoke* invoke_instruction,
+                                       ArtMethod* resolved_method,
+                                       bool same_dex_file,
+                                       HInstruction** return_replacement) {
   ScopedObjectAccess soa(Thread::Current());
   const DexFile::CodeItem* code_item = resolved_method->GetCodeItem();
   const DexFile& callee_dex_file = *resolved_method->GetDexFile();
@@ -1016,16 +1026,12 @@
   }
   number_of_inlined_instructions_ += number_of_instructions;
 
-  HInstruction* return_replacement = callee_graph->InlineInto(graph_, invoke_instruction);
-  if (return_replacement != nullptr) {
-    DCHECK_EQ(graph_, return_replacement->GetBlock()->GetGraph());
-  }
-  FixUpReturnReferenceType(resolved_method, invoke_instruction, return_replacement, do_rtp);
+  *return_replacement = callee_graph->InlineInto(graph_, invoke_instruction);
   return true;
 }
 
-void HInliner::FixUpReturnReferenceType(ArtMethod* resolved_method,
-                                        HInvoke* invoke_instruction,
+void HInliner::FixUpReturnReferenceType(HInvoke* invoke_instruction,
+                                        ArtMethod* resolved_method,
                                         HInstruction* return_replacement,
                                         bool do_rtp) {
   // Check the integrity of reference types and run another type propagation if needed.
diff --git a/compiler/optimizing/inliner.h b/compiler/optimizing/inliner.h
index 7d343c6..9dd9bf5 100644
--- a/compiler/optimizing/inliner.h
+++ b/compiler/optimizing/inliner.h
@@ -61,12 +61,25 @@
   bool TryInline(HInvoke* invoke_instruction);
 
   // Try to inline `resolved_method` in place of `invoke_instruction`. `do_rtp` is whether
-  // reference type propagation can run after the inlining.
-  bool TryInline(HInvoke* invoke_instruction, ArtMethod* resolved_method, bool do_rtp = true)
+  // reference type propagation can run after the inlining. If the inlining is successful, this
+  // method will replace and remove the `invoke_instruction`.
+  bool TryInlineAndReplace(HInvoke* invoke_instruction, ArtMethod* resolved_method, bool do_rtp)
     SHARED_REQUIRES(Locks::mutator_lock_);
 
+  bool TryBuildAndInline(HInvoke* invoke_instruction,
+                         ArtMethod* resolved_method,
+                         HInstruction** return_replacement)
+    SHARED_REQUIRES(Locks::mutator_lock_);
+
+  bool TryBuildAndInlineHelper(HInvoke* invoke_instruction,
+                               ArtMethod* resolved_method,
+                               bool same_dex_file,
+                               HInstruction** return_replacement);
+
   // Try to recognize known simple patterns and replace invoke call with appropriate instructions.
-  bool TryPatternSubstitution(HInvoke* invoke_instruction, ArtMethod* resolved_method, bool do_rtp)
+  bool TryPatternSubstitution(HInvoke* invoke_instruction,
+                              ArtMethod* resolved_method,
+                              HInstruction** return_replacement)
     SHARED_REQUIRES(Locks::mutator_lock_);
 
   // Create a new HInstanceFieldGet.
@@ -94,18 +107,13 @@
                                 const InlineCache& ic)
     SHARED_REQUIRES(Locks::mutator_lock_);
 
-  bool TryBuildAndInline(ArtMethod* resolved_method,
-                         HInvoke* invoke_instruction,
-                         bool same_dex_file,
-                         bool do_rtp = true);
-
   HInstanceFieldGet* BuildGetReceiverClass(ClassLinker* class_linker,
                                            HInstruction* receiver,
                                            uint32_t dex_pc) const
     SHARED_REQUIRES(Locks::mutator_lock_);
 
-  void FixUpReturnReferenceType(ArtMethod* resolved_method,
-                                HInvoke* invoke_instruction,
+  void FixUpReturnReferenceType(HInvoke* invoke_instruction,
+                                ArtMethod* resolved_method,
                                 HInstruction* return_replacement,
                                 bool do_rtp)
     SHARED_REQUIRES(Locks::mutator_lock_);
diff --git a/compiler/optimizing/intrinsics_x86.cc b/compiler/optimizing/intrinsics_x86.cc
index ab4f6f9..22cefe8 100644
--- a/compiler/optimizing/intrinsics_x86.cc
+++ b/compiler/optimizing/intrinsics_x86.cc
@@ -261,7 +261,8 @@
   locations->SetOut(Location::SameAsFirstInput());
   HInvokeStaticOrDirect* static_or_direct = invoke->AsInvokeStaticOrDirect();
   DCHECK(static_or_direct != nullptr);
-  if (invoke->InputAt(static_or_direct->GetSpecialInputIndex())->IsX86ComputeBaseMethodAddress()) {
+  if (static_or_direct->HasSpecialInput() &&
+      invoke->InputAt(static_or_direct->GetSpecialInputIndex())->IsX86ComputeBaseMethodAddress()) {
     // We need addressibility for the constant area.
     locations->SetInAt(1, Location::RequiresRegister());
     // We need a temporary to hold the constant.
@@ -276,7 +277,7 @@
   Location output = locations->Out();
 
   DCHECK(output.IsFpuRegister());
-  if (locations->InAt(1).IsValid()) {
+  if (locations->GetInputCount() == 2 && locations->InAt(1).IsValid()) {
     DCHECK(locations->InAt(1).IsRegister());
     // We also have a constant area pointer.
     Register constant_area = locations->InAt(1).AsRegister<Register>();
@@ -465,7 +466,7 @@
   // NaN handling.
   __ Bind(&nan);
   // Do we have a constant area pointer?
-  if (locations->InAt(2).IsValid()) {
+  if (locations->GetInputCount() == 3 && locations->InAt(2).IsValid()) {
     DCHECK(locations->InAt(2).IsRegister());
     Register constant_area = locations->InAt(2).AsRegister<Register>();
     if (is_double) {
@@ -510,7 +511,8 @@
   locations->SetOut(Location::SameAsFirstInput());
   HInvokeStaticOrDirect* static_or_direct = invoke->AsInvokeStaticOrDirect();
   DCHECK(static_or_direct != nullptr);
-  if (invoke->InputAt(static_or_direct->GetSpecialInputIndex())->IsX86ComputeBaseMethodAddress()) {
+  if (static_or_direct->HasSpecialInput() &&
+      invoke->InputAt(static_or_direct->GetSpecialInputIndex())->IsX86ComputeBaseMethodAddress()) {
     locations->SetInAt(2, Location::RequiresRegister());
   }
 }
diff --git a/compiler/optimizing/nodes.cc b/compiler/optimizing/nodes.cc
index ca66f63..27015c0 100644
--- a/compiler/optimizing/nodes.cc
+++ b/compiler/optimizing/nodes.cc
@@ -2030,13 +2030,6 @@
     }
   }
 
-  if (return_value != nullptr) {
-    invoke->ReplaceWith(return_value);
-  }
-
-  // Finally remove the invoke from the caller.
-  invoke->GetBlock()->RemoveInstruction(invoke);
-
   return return_value;
 }
 
diff --git a/compiler/optimizing/nodes.h b/compiler/optimizing/nodes.h
index 18b256f..854854f 100644
--- a/compiler/optimizing/nodes.h
+++ b/compiler/optimizing/nodes.h
@@ -345,8 +345,9 @@
   void ComputeTryBlockInformation();
 
   // Inline this graph in `outer_graph`, replacing the given `invoke` instruction.
-  // Returns the instruction used to replace the invoke expression or null if the
-  // invoke is for a void method.
+  // Returns the instruction to replace the invoke expression or null if the
+  // invoke is for a void method. Note that the caller is responsible for replacing
+  // and removing the invoke instruction.
   HInstruction* InlineInto(HGraph* outer_graph, HInvoke* invoke);
 
   // Need to add a couple of blocks to test if the loop body is entered and
@@ -3671,6 +3672,7 @@
   // method pointer; otherwise there may be one platform-specific special input,
   // such as PC-relative addressing base.
   uint32_t GetSpecialInputIndex() const { return GetNumberOfArguments(); }
+  bool HasSpecialInput() const { return GetNumberOfArguments() != InputCount(); }
 
   InvokeType GetOptimizedInvokeType() const { return optimized_invoke_type_; }
   void SetOptimizedInvokeType(InvokeType invoke_type) {
diff --git a/runtime/base/scoped_arena_containers.h b/runtime/base/scoped_arena_containers.h
index 1236585..9b56856 100644
--- a/runtime/base/scoped_arena_containers.h
+++ b/runtime/base/scoped_arena_containers.h
@@ -201,22 +201,28 @@
 template <typename T>
 class ArenaDelete {
   static constexpr uint8_t kMagicFill = 0xCE;
- public:
-  void operator()(T* ptr) const {
-    ptr->~T();
+ protected:
+  // Used for variable sized objects such as RegisterLine.
+  ALWAYS_INLINE void ProtectMemory(T* ptr, size_t size) const {
     if (RUNNING_ON_MEMORY_TOOL > 0) {
       // Writing to the memory will fail if it we already destroyed the pointer with
       // DestroyOnlyDelete since we make it no access.
-      memset(ptr, kMagicFill, sizeof(T));
-      MEMORY_TOOL_MAKE_NOACCESS(ptr, sizeof(T));
+      memset(ptr, kMagicFill, size);
+      MEMORY_TOOL_MAKE_NOACCESS(ptr, size);
     } else if (kIsDebugBuild) {
       CHECK(ArenaStack::ArenaTagForAllocation(reinterpret_cast<void*>(ptr)) == ArenaFreeTag::kUsed)
           << "Freeing invalid object " << ptr;
       ArenaStack::ArenaTagForAllocation(reinterpret_cast<void*>(ptr)) = ArenaFreeTag::kFree;
       // Write a magic value to try and catch use after free error.
-      memset(ptr, kMagicFill, sizeof(T));
+      memset(ptr, kMagicFill, size);
     }
   }
+
+ public:
+  void operator()(T* ptr) const {
+    ptr->~T();
+    ProtectMemory(ptr, sizeof(T));
+  }
 };
 
 // In general we lack support for arrays. We would need to call the destructor on each element,
diff --git a/runtime/jit/jit_code_cache.cc b/runtime/jit/jit_code_cache.cc
index 9111ddf..fc89bfd 100644
--- a/runtime/jit/jit_code_cache.cc
+++ b/runtime/jit/jit_code_cache.cc
@@ -269,6 +269,14 @@
       }
     }
   }
+  for (auto it = osr_code_map_.begin(); it != osr_code_map_.end();) {
+    if (alloc.ContainsUnsafe(it->first)) {
+      // Note that the code has already been removed in the loop above.
+      it = osr_code_map_.erase(it);
+    } else {
+      ++it;
+    }
+  }
   for (auto it = profiling_infos_.begin(); it != profiling_infos_.end();) {
     ProfilingInfo* info = *it;
     if (alloc.ContainsUnsafe(info->GetMethod())) {
diff --git a/runtime/verifier/method_verifier.cc b/runtime/verifier/method_verifier.cc
index 1d31408..a6cf9ea 100644
--- a/runtime/verifier/method_verifier.cc
+++ b/runtime/verifier/method_verifier.cc
@@ -1960,8 +1960,8 @@
   // We need to ensure the work line is consistent while performing validation. When we spot a
   // peephole pattern we compute a new line for either the fallthrough instruction or the
   // branch target.
-  ArenaUniquePtr<RegisterLine> branch_line;
-  ArenaUniquePtr<RegisterLine> fallthrough_line;
+  RegisterLineArenaUniquePtr branch_line;
+  RegisterLineArenaUniquePtr fallthrough_line;
 
   switch (inst->Opcode()) {
     case Instruction::NOP:
@@ -4824,7 +4824,7 @@
       AdjustReturnLine(this, ret_inst, target_line);
     }
   } else {
-    ArenaUniquePtr<RegisterLine> copy;
+    RegisterLineArenaUniquePtr copy;
     if (kDebugVerify) {
       copy.reset(RegisterLine::Create(target_line->NumRegs(), this));
       copy->CopyFromLine(target_line);
diff --git a/runtime/verifier/method_verifier.h b/runtime/verifier/method_verifier.h
index c7d1e6b..b53a45c 100644
--- a/runtime/verifier/method_verifier.h
+++ b/runtime/verifier/method_verifier.h
@@ -30,6 +30,7 @@
 #include "handle.h"
 #include "instruction_flags.h"
 #include "method_reference.h"
+#include "register_line.h"
 #include "reg_type_cache.h"
 
 namespace art {
@@ -45,6 +46,7 @@
 class DexPcToReferenceMap;
 class MethodVerifier;
 class RegisterLine;
+using RegisterLineArenaUniquePtr = std::unique_ptr<RegisterLine, RegisterLineArenaDelete>;
 class RegType;
 
 /*
@@ -127,7 +129,7 @@
   }
 
  private:
-  ScopedArenaVector<ArenaUniquePtr<RegisterLine>> register_lines_;
+  ScopedArenaVector<RegisterLineArenaUniquePtr> register_lines_;
 
   DISALLOW_COPY_AND_ASSIGN(PcToRegisterLineTable);
 };
@@ -771,14 +773,14 @@
   PcToRegisterLineTable reg_table_;
 
   // Storage for the register status we're currently working on.
-  ArenaUniquePtr<RegisterLine> work_line_;
+  RegisterLineArenaUniquePtr work_line_;
 
   // The address of the instruction we're currently working on, note that this is in 2 byte
   // quantities
   uint32_t work_insn_idx_;
 
   // Storage for the register status we're saving for later.
-  ArenaUniquePtr<RegisterLine> saved_line_;
+  RegisterLineArenaUniquePtr saved_line_;
 
   const uint32_t dex_method_idx_;  // The method we're working on.
   // Its object representation if known.
diff --git a/runtime/verifier/register_line-inl.h b/runtime/verifier/register_line-inl.h
index 330c06a..bfbb78f 100644
--- a/runtime/verifier/register_line-inl.h
+++ b/runtime/verifier/register_line-inl.h
@@ -185,9 +185,12 @@
   }
 }
 
+inline size_t RegisterLine::ComputeSize(size_t num_regs) {
+  return OFFSETOF_MEMBER(RegisterLine, line_) + num_regs * sizeof(uint16_t);
+}
+
 inline RegisterLine* RegisterLine::Create(size_t num_regs, MethodVerifier* verifier) {
-  void* memory = verifier->GetArena().Alloc(OFFSETOF_MEMBER(RegisterLine, line_) +
-                                                (num_regs * sizeof(uint16_t)));
+  void* memory = verifier->GetArena().Alloc(ComputeSize(num_regs));
   return new (memory) RegisterLine(num_regs, verifier);
 }
 
@@ -200,6 +203,12 @@
   SetResultTypeToUnknown(verifier);
 }
 
+inline void RegisterLineArenaDelete::operator()(RegisterLine* ptr) const {
+  const size_t size = ptr != nullptr ? RegisterLine::ComputeSize(ptr->NumRegs()) : 0u;
+  ptr->~RegisterLine();
+  ProtectMemory(ptr, size);
+}
+
 }  // namespace verifier
 }  // namespace art
 
diff --git a/runtime/verifier/register_line.h b/runtime/verifier/register_line.h
index b2f5555..d508454 100644
--- a/runtime/verifier/register_line.h
+++ b/runtime/verifier/register_line.h
@@ -197,6 +197,9 @@
     return num_regs_;
   }
 
+  // Return how many bytes of memory a register line uses.
+  ALWAYS_INLINE static size_t ComputeSize(size_t num_regs);
+
   /*
    * Get the "this" pointer from a non-static method invocation. This returns the RegType so the
    * caller can decide whether it needs the reference to be initialized or not. (Can also return
@@ -401,6 +404,13 @@
   DISALLOW_COPY_AND_ASSIGN(RegisterLine);
 };
 
+class RegisterLineArenaDelete : public ArenaDelete<RegisterLine> {
+ public:
+  void operator()(RegisterLine* ptr) const;
+};
+
+
+
 }  // namespace verifier
 }  // namespace art
 
diff --git a/test/003-omnibus-opcodes/build b/test/003-omnibus-opcodes/build
index faa2983..56e8784 100644
--- a/test/003-omnibus-opcodes/build
+++ b/test/003-omnibus-opcodes/build
@@ -23,8 +23,8 @@
 ${JAVAC} -d classes `find src2 -name '*.java'`
 
 if [ ${USE_JACK} = "true" ]; then
-  ${JILL} classes --output classes.jack
-  ${JACK} --import classes.jack --output-dex .
+  jar cf classes.jill.jar -C classes .
+  ${JACK} --import classes.jill.jar --output-dex .
 else
   ${DX} -JXmx256m --debug --dex --output=classes.dex classes
   fi
diff --git a/test/005-annotations/build b/test/005-annotations/build
index 057b351..93bee50 100644
--- a/test/005-annotations/build
+++ b/test/005-annotations/build
@@ -29,8 +29,8 @@
 rm 'classes/android/test/anno/ClassWithInnerAnnotationClass$MissingInnerAnnotationClass.class'
 
 if [ ${USE_JACK} = "true" ]; then
-  ${JILL} classes --output classes.jack
-  ${JACK} --import classes.jack --output-dex .
+  jar cf classes.jill.jar -C classes .
+  ${JACK} --import classes.jill.jar --output-dex .
 else
   ${DX} -JXmx256m --debug --dex --output=classes.dex classes
 fi
diff --git a/test/022-interface/build b/test/022-interface/build
index 3f8915c..5cfc7f2 100644
--- a/test/022-interface/build
+++ b/test/022-interface/build
@@ -20,8 +20,8 @@
 # Use classes that are compiled with ecj that exposes an invokeinterface
 # issue when interfaces override methods in Object
 if [ ${USE_JACK} = "true" ]; then
-  ${JILL} classes --output classes.jack
-  ${JACK} --import classes.jack --output-dex .
+  jar cf classes.jill.jar -C classes .
+  ${JACK} --import classes.jill.jar --output-dex .
 else
   ${DX} --debug --dex --dump-to=classes.lst --output=classes.dex classes
 fi
diff --git a/test/085-old-style-inner-class/build b/test/085-old-style-inner-class/build
index 6f50a76..21dc662 100644
--- a/test/085-old-style-inner-class/build
+++ b/test/085-old-style-inner-class/build
@@ -23,8 +23,8 @@
 ${JAVAC} -source 1.4 -target 1.4 -d classes `find src -name '*.java'`
 
 if [ ${USE_JACK} = "true" ]; then
-  ${JILL} classes --output classes.jack
-  ${JACK} --import classes.jack --output-dex .
+  jar cf classes.jill.jar -C classes .
+  ${JACK} --import classes.jill.jar --output-dex .
 else
   # Suppress stderr to keep the inner class warnings out of the expected output.
   ${DX} --debug --dex --dump-to=classes.lst --output=classes.dex --dump-width=1000 classes 2>/dev/null
diff --git a/test/091-override-package-private-method/build b/test/091-override-package-private-method/build
index 5a340dc..073a4ba 100755
--- a/test/091-override-package-private-method/build
+++ b/test/091-override-package-private-method/build
@@ -24,14 +24,12 @@
 mv classes/OverridePackagePrivateMethodSuper.class classes-ex
 
 if [ ${USE_JACK} = "true" ]; then
-  # Create .jack files from classes generated with javac.
-  ${JILL} classes --output classes.jack
-  ${JILL} classes-ex --output classes-ex.jack
+  jar cf classes.jill.jar -C classes .
+  jar cf classes-ex.jill.jar -C classes-ex .
 
-  # Create DEX files from .jack files.
-  ${JACK} --import classes.jack --output-dex .
+  ${JACK} --import classes.jill.jar --output-dex .
   zip $TEST_NAME.jar classes.dex
-  ${JACK} --import classes-ex.jack --output-dex .
+  ${JACK} --import classes-ex.jill.jar --output-dex .
   zip ${TEST_NAME}-ex.jar classes.dex
 else
   if [ ${NEED_DEX} = "true" ]; then
diff --git a/test/097-duplicate-method/build b/test/097-duplicate-method/build
index a855873..4525549 100644
--- a/test/097-duplicate-method/build
+++ b/test/097-duplicate-method/build
@@ -23,10 +23,10 @@
   ${JACK} --output-jack src.jack src
 
   ${JASMIN} -d classes src/*.j
-  ${JILL} classes --output jasmin.jack
+  jar cf jasmin.jill.jar -C classes .
 
   # We set jack.import.type.policy=keep-first to consider class definitions from jasmin first.
-  ${JACK} --import jasmin.jack --import src.jack -D jack.import.type.policy=keep-first --output-dex .
+  ${JACK} --import jasmin.jill.jar --import src.jack -D jack.import.type.policy=keep-first --output-dex .
 else
   ${JAVAC} -d classes src/*.java
   ${JASMIN} -d classes src/*.j
diff --git a/test/111-unresolvable-exception/build b/test/111-unresolvable-exception/build
index e772fb8..58ac26d 100644
--- a/test/111-unresolvable-exception/build
+++ b/test/111-unresolvable-exception/build
@@ -22,8 +22,8 @@
 rm classes/TestException.class
 
 if [ ${USE_JACK} = "true" ]; then
-  ${JILL} classes --output classes.jack
-  ${JACK} --import classes.jack --output-dex .
+  jar cf classes.jill.jar -C classes .
+  ${JACK} --import classes.jill.jar --output-dex .
 else
   ${DX} -JXmx256m --debug --dex --dump-to=classes.lst --output=classes.dex classes
 fi
diff --git a/test/113-multidex/build b/test/113-multidex/build
index 8ef5c0e..4557ccd 100644
--- a/test/113-multidex/build
+++ b/test/113-multidex/build
@@ -28,14 +28,12 @@
 rm classes2/Second.class classes2/FillerA.class classes2/FillerB.class classes2/Inf*.class
 
 if [ ${USE_JACK} = "true" ]; then
-  # Create .jack files from classes generated with javac.
-  ${JILL} classes --output classes.jack
-  ${JILL} classes2 --output classes2.jack
+  jar cf classes.jill.jar -C classes .
+  jar cf classes2.jill.jar -C classes2 .
 
-  # Create DEX files from .jack files.
-  ${JACK} --import classes.jack --output-dex .
+  ${JACK} --import classes.jill.jar --output-dex .
   mv classes.dex classes-1.dex
-  ${JACK} --import classes2.jack --output-dex .
+  ${JACK} --import classes2.jill.jar --output-dex .
   mv classes.dex classes2.dex
   mv classes-1.dex classes.dex
 else
diff --git a/test/121-modifiers/build b/test/121-modifiers/build
index 85b69e9..771dd51 100644
--- a/test/121-modifiers/build
+++ b/test/121-modifiers/build
@@ -31,9 +31,9 @@
 # mv Main.class A.class A\$B.class A\$C.class classes/
 
 if [ ${USE_JACK} = "true" ]; then
-  ${JILL} classes --output classes.jack
+  jar cf classes.jill.jar -C classes .
   # Workaround b/19561685: disable sanity checks to produce a DEX file with invalid modifiers.
-  ${JACK} --sanity-checks off --import classes.jack --output-dex .
+  ${JACK} --sanity-checks off --import classes.jill.jar --output-dex .
 else
   ${DX} --debug --dex --dump-to=classes.lst --output=classes.dex classes
 fi
diff --git a/test/124-missing-classes/build b/test/124-missing-classes/build
index b92ecf9..0a340a2 100644
--- a/test/124-missing-classes/build
+++ b/test/124-missing-classes/build
@@ -27,8 +27,8 @@
 rm 'classes/Main$MissingInnerClass.class'
 
 if [ ${USE_JACK} = "true" ]; then
-  ${JILL} classes --output classes.jack
-  ${JACK} --import classes.jack --output-dex .
+  jar cf classes.jill.jar -C classes .
+  ${JACK} --import classes.jill.jar --output-dex .
 else
   ${DX} -JXmx256m --debug --dex --output=classes.dex classes
 fi
diff --git a/test/126-miranda-multidex/build b/test/126-miranda-multidex/build
index b7f2118..00b9ba0 100644
--- a/test/126-miranda-multidex/build
+++ b/test/126-miranda-multidex/build
@@ -28,14 +28,12 @@
 rm classes2/Main.class classes2/MirandaAbstract.class classes2/MirandaClass*.class classes2/MirandaInterface2*.class
 
 if [ ${USE_JACK} = "true" ]; then
-  # Create .jack files from classes generated with javac.
-  ${JILL} classes --output classes.jack
-  ${JILL} classes2 --output classes2.jack
+  jar cf classes.jill.jar -C classes .
+  jar cf classes2.jill.jar -C classes2 .
 
-  # Create DEX files from .jack files.
-  ${JACK} --import classes.jack --output-dex .
+  ${JACK} --import classes.jill.jar --output-dex .
   mv classes.dex classes-1.dex
-  ${JACK} --import classes2.jack --output-dex .
+  ${JACK} --import classes2.jill.jar --output-dex .
   mv classes.dex classes2.dex
   mv classes-1.dex classes.dex
 else
diff --git a/test/127-checker-secondarydex/build b/test/127-checker-secondarydex/build
index 0d9f4d6..7ce46ac 100755
--- a/test/127-checker-secondarydex/build
+++ b/test/127-checker-secondarydex/build
@@ -24,14 +24,12 @@
 mv classes/Super.class classes-ex
 
 if [ ${USE_JACK} = "true" ]; then
-  # Create .jack files from classes generated with javac.
-  ${JILL} classes --output classes.jack
-  ${JILL} classes-ex --output classes-ex.jack
+  jar cf classes.jill.jar -C classes .
+  jar cf classes-ex.jill.jar -C classes-ex .
 
-  # Create DEX files from .jack files.
-  ${JACK} --import classes.jack --output-dex .
+  ${JACK} --import classes.jill.jar --output-dex .
   zip $TEST_NAME.jar classes.dex
-  ${JACK} --import classes-ex.jack --output-dex .
+  ${JACK} --import classes-ex.jill.jar --output-dex .
   zip ${TEST_NAME}-ex.jar classes.dex
 else
   if [ ${NEED_DEX} = "true" ]; then
diff --git a/test/529-checker-unresolved/build b/test/529-checker-unresolved/build
index 8c3c4f8..d85035b 100644
--- a/test/529-checker-unresolved/build
+++ b/test/529-checker-unresolved/build
@@ -29,14 +29,12 @@
 mv classes/UnresolvedSuperClass.class classes-ex
 
 if [ ${USE_JACK} = "true" ]; then
-  # Create .jack files from classes generated with javac.
-  ${JILL} classes --output classes.jack
-  ${JILL} classes-ex --output classes-ex.jack
+  jar cf classes.jill.jar -C classes .
+  jar cf classes-ex.jill.jar -C classes-ex .
 
-  # Create DEX files from .jack files.
-  ${JACK} --import classes.jack --output-dex .
+  ${JACK} --import classes.jill.jar --output-dex .
   zip $TEST_NAME.jar classes.dex
-  ${JACK} --import classes-ex.jack --output-dex .
+  ${JACK} --import classes-ex.jill.jar --output-dex .
   zip ${TEST_NAME}-ex.jar classes.dex
 else
   if [ ${NEED_DEX} = "true" ]; then
diff --git a/test/574-irreducible-and-constant-area/expected.txt b/test/574-irreducible-and-constant-area/expected.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test/574-irreducible-and-constant-area/expected.txt
diff --git a/test/574-irreducible-and-constant-area/info.txt b/test/574-irreducible-and-constant-area/info.txt
new file mode 100644
index 0000000..e957a5a
--- /dev/null
+++ b/test/574-irreducible-and-constant-area/info.txt
@@ -0,0 +1,3 @@
+Regression test for intrinsics on x86, which used to wrongly assume
+a HInvokeStaticOrDirect must have a special input (does not apply for irreducible
+loops).
diff --git a/test/574-irreducible-and-constant-area/run b/test/574-irreducible-and-constant-area/run
new file mode 100755
index 0000000..ffdbcc9
--- /dev/null
+++ b/test/574-irreducible-and-constant-area/run
@@ -0,0 +1,18 @@
+#!/bin/bash
+#
+# Copyright (C) 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Don't do relocation, as this affects this test.
+exec ${RUN} "$@" --no-relocate
diff --git a/test/574-irreducible-and-constant-area/smali/IrreducibleLoop.smali b/test/574-irreducible-and-constant-area/smali/IrreducibleLoop.smali
new file mode 100644
index 0000000..d7d4346
--- /dev/null
+++ b/test/574-irreducible-and-constant-area/smali/IrreducibleLoop.smali
@@ -0,0 +1,35 @@
+# Copyright (C) 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+.class public LIrreducibleLoop;
+
+.super Ljava/lang/Object;
+
+.method public static simpleLoop(I)I
+   .registers 5
+   const/16 v0, 42
+   const/16 v1, 42
+   const-wide/high16 v2, 0x4000000000000000L
+   if-eq p0, v0, :other_loop_entry
+   :loop_entry
+   invoke-static {v1, v1}, LMain;->$inline$foo(FF)V
+   invoke-static {v2, v3, v2, v3}, LMain;->$inline$foo(DD)V
+   if-ne p0, v0, :exit
+   add-int v0, v0, v0
+   :other_loop_entry
+   add-int v0, v0, v0
+   goto :loop_entry
+   :exit
+   return v0
+.end method
diff --git a/test/574-irreducible-and-constant-area/src/Main.java b/test/574-irreducible-and-constant-area/src/Main.java
new file mode 100644
index 0000000..3cdd924
--- /dev/null
+++ b/test/574-irreducible-and-constant-area/src/Main.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.lang.reflect.Method;
+
+public class Main {
+  // Workaround for b/18051191.
+  class InnerClass {}
+
+  public static void main(String[] args) throws Exception {
+    Class<?> c = Class.forName("IrreducibleLoop");
+    Method m = c.getMethod("simpleLoop", int.class);
+    Object[] arguments = { 42 };
+    m.invoke(null, arguments);
+  }
+
+  public static void $inline$foo(float a, float b) {
+    Math.abs(a);
+    Math.max(a, b);
+    Math.min(a, b);
+  }
+
+  public static void $inline$foo(double a, double b) {
+    Math.abs(a);
+    Math.max(a, b);
+    Math.min(a, b);
+  }
+}
diff --git a/test/Android.run-test.mk b/test/Android.run-test.mk
index b3560b6..364be59 100644
--- a/test/Android.run-test.mk
+++ b/test/Android.run-test.mk
@@ -42,8 +42,7 @@
 
 ifeq ($(ANDROID_COMPILE_WITH_JACK),true)
   TEST_ART_RUN_TEST_DEPENDENCIES += \
-    $(JACK) \
-    $(JILL_JAR)
+    $(JACK)
   TEST_ART_RUN_TEST_ORDERONLY_DEPENDENCIES += setup-jack-server
 endif
 
@@ -72,8 +71,8 @@
 	  DXMERGER=$(abspath $(HOST_OUT_EXECUTABLES)/dexmerger) \
 	  JACK_VERSION=$(JACK_DEFAULT_VERSION) \
 	  JACK=$(abspath $(JACK)) \
+	  JACK_VERSION=$(JACK_DEFAULT_VERSION) \
 	  JACK_CLASSPATH=$(TARGET_JACK_CLASSPATH) \
-	  JILL_JAR=$(abspath $(JILL_JAR)) \
 	  $(LOCAL_PATH)/run-test $$(PRIVATE_RUN_TEST_OPTIONS) --output-path $$(abspath $$(dir $$@)) $(1)
 	$(hide) touch $$@
 
@@ -962,8 +961,8 @@
 	    DXMERGER=$(abspath $(HOST_OUT_EXECUTABLES)/dexmerger) \
 	    JACK_VERSION=$(JACK_DEFAULT_VERSION) \
 	    JACK=$(abspath $(JACK)) \
+	    JACK_VERSION=$(JACK_DEFAULT_VERSION) \
 	    JACK_CLASSPATH=$$(PRIVATE_JACK_CLASSPATH) \
-	    JILL_JAR=$(abspath $(JILL_JAR)) \
 	    art/test/run-test $$(PRIVATE_RUN_TEST_OPTIONS) $(12) \
 	      && $$(call ART_TEST_PASSED,$$@) || $$(call ART_TEST_FAILED,$$@)
 	$$(hide) (echo $(MAKECMDGOALS) | grep -q $$@ && \
diff --git a/test/run-test b/test/run-test
index faa597e..f1875d7 100755
--- a/test/run-test
+++ b/test/run-test
@@ -88,13 +88,7 @@
   export JACK_CLASSPATH="${OUT_DIR:-$ANDROID_BUILD_TOP/out}/host/common/obj/JAVA_LIBRARIES/core-libart-hostdex_intermediates/classes.jack:${OUT_DIR:-$ANDROID_BUILD_TOP/out}/host/common/obj/JAVA_LIBRARIES/core-oj-hostdex_intermediates/classes.jack"
 fi
 
-# If JILL_JAR is not set, assume it is located in the prebuilts directory.
-if [ -z "$JILL_JAR" ]; then
-  export JILL_JAR="$ANDROID_BUILD_TOP/prebuilts/sdk/tools/jill.jar"
-fi
-
 export JACK="$JACK -g -cp $JACK_CLASSPATH"
-export JILL="java -jar $JILL_JAR"
 
 info="info.txt"
 build="build"
diff --git a/tools/ahat/README.txt b/tools/ahat/README.txt
index da5225c..d9b26bc 100644
--- a/tools/ahat/README.txt
+++ b/tools/ahat/README.txt
@@ -78,6 +78,7 @@
 
 Release History:
  0.4 Pending
+   Annotate char[] objects with their string values.
    Show registered native allocations for heap dumps that support it.
 
  0.3 Dec 15, 2015
diff --git a/tools/ahat/src/InstanceUtils.java b/tools/ahat/src/InstanceUtils.java
index 8b7f9ea..d7b64e2 100644
--- a/tools/ahat/src/InstanceUtils.java
+++ b/tools/ahat/src/InstanceUtils.java
@@ -76,11 +76,15 @@
    * If maxChars is negative, the returned string is not truncated.
    */
   public static String asString(Instance inst, int maxChars) {
-    if (!isInstanceOfClass(inst, "java.lang.String")) {
-      return null;
+    // The inst object could either be a java.lang.String or a char[]. If it
+    // is a char[], use that directly as the value, otherwise use the value
+    // field of the string object. The field accesses for count and offset
+    // later on will work okay regardless of what type the inst object is.
+    Object value = inst;
+    if (isInstanceOfClass(inst, "java.lang.String")) {
+      value = getField(inst, "value");
     }
 
-    Object value = getField(inst, "value");
     if (!(value instanceof ArrayInstance)) {
       return null;
     }
diff --git a/tools/ahat/test-dump/Main.java b/tools/ahat/test-dump/Main.java
index 701d60e..d61a98d 100644
--- a/tools/ahat/test-dump/Main.java
+++ b/tools/ahat/test-dump/Main.java
@@ -35,6 +35,7 @@
   // class and reading the desired field.
   public static class DumpedStuff {
     public String basicString = "hello, world";
+    public char[] charArray = "char thing".toCharArray();
     public String nullString = null;
     public Object anObject = new Object();
     public ReferenceQueue<Object> referenceQueue = new ReferenceQueue<Object>();
diff --git a/tools/ahat/test/InstanceUtilsTest.java b/tools/ahat/test/InstanceUtilsTest.java
index 32f48ce..59b1c90 100644
--- a/tools/ahat/test/InstanceUtilsTest.java
+++ b/tools/ahat/test/InstanceUtilsTest.java
@@ -32,6 +32,13 @@
   }
 
   @Test
+  public void asStringCharArray() throws IOException {
+    TestDump dump = TestDump.getTestDump();
+    Instance str = (Instance)dump.getDumpedThing("charArray");
+    assertEquals("char thing", InstanceUtils.asString(str));
+  }
+
+  @Test
   public void asStringTruncated() throws IOException {
     TestDump dump = TestDump.getTestDump();
     Instance str = (Instance)dump.getDumpedThing("basicString");
@@ -39,6 +46,13 @@
   }
 
   @Test
+  public void asStringCharArrayTruncated() throws IOException {
+    TestDump dump = TestDump.getTestDump();
+    Instance str = (Instance)dump.getDumpedThing("charArray");
+    assertEquals("char ", InstanceUtils.asString(str, 5));
+  }
+
+  @Test
   public void asStringExactMax() throws IOException {
     TestDump dump = TestDump.getTestDump();
     Instance str = (Instance)dump.getDumpedThing("basicString");
@@ -46,6 +60,13 @@
   }
 
   @Test
+  public void asStringCharArrayExactMax() throws IOException {
+    TestDump dump = TestDump.getTestDump();
+    Instance str = (Instance)dump.getDumpedThing("charArray");
+    assertEquals("char thing", InstanceUtils.asString(str, 10));
+  }
+
+  @Test
   public void asStringNotTruncated() throws IOException {
     TestDump dump = TestDump.getTestDump();
     Instance str = (Instance)dump.getDumpedThing("basicString");
@@ -53,6 +74,13 @@
   }
 
   @Test
+  public void asStringCharArrayNotTruncated() throws IOException {
+    TestDump dump = TestDump.getTestDump();
+    Instance str = (Instance)dump.getDumpedThing("charArray");
+    assertEquals("char thing", InstanceUtils.asString(str, 50));
+  }
+
+  @Test
   public void asStringNegativeMax() throws IOException {
     TestDump dump = TestDump.getTestDump();
     Instance str = (Instance)dump.getDumpedThing("basicString");
@@ -60,6 +88,13 @@
   }
 
   @Test
+  public void asStringCharArrayNegativeMax() throws IOException {
+    TestDump dump = TestDump.getTestDump();
+    Instance str = (Instance)dump.getDumpedThing("charArray");
+    assertEquals("char thing", InstanceUtils.asString(str, -3));
+  }
+
+  @Test
   public void asStringNull() throws IOException {
     TestDump dump = TestDump.getTestDump();
     Instance obj = (Instance)dump.getDumpedThing("nullString");