- Reduce the number of Isolate::Current() calls.

runtime/vm/intermediate_language_ia32.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/dart_entry.h"
@@ skipping 11 matching lines @@
 
 DECLARE_FLAG(int, optimization_counter_threshold);
 DECLARE_FLAG(bool, propagate_ic_data);
 DECLARE_FLAG(bool, use_osr);
 DECLARE_FLAG(bool, throw_on_javascript_int_overflow);
 DECLARE_FLAG(bool, use_slow_path);
 
 // Generic summary for call instructions that have all arguments pushed
 // on the stack and return the result in a fixed register EAX.
 LocationSummary* Instruction::MakeCallSummary() {
-  LocationSummary* result = new LocationSummary(0, 0, LocationSummary::kCall);
+  Isolate* isolate = Isolate::Current();
+  LocationSummary* result = new(isolate) LocationSummary(
+      isolate,0, 0, LocationSummary::kCall);
   result->set_out(0, Location::RegisterLocation(EAX));
   return result;
 }
 
 
-LocationSummary* PushArgumentInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* PushArgumentInstr::MakeLocationSummary(Isolate* isolate,
+                                                        bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps= 0;
-  LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+  LocationSummary* locs = new (isolate) LocationSummary(isolate, 
+      kNumInputs, kNumTemps, LocationSummary::kNoCall);
   locs->set_in(0, Location::AnyOrConstant(value()));
   return locs;
 }
 
 
 void PushArgumentInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   // In SSA mode, we need an explicit push. Nothing to do in non-SSA mode
   // where PushArgument is handled by BindInstr::EmitNativeCode.
   if (compiler->is_optimizing()) {
     Location value = locs()->in(0);
     if (value.IsRegister()) {
       __ pushl(value.reg());
     } else if (value.IsConstant()) {
       __ PushObject(value.constant());
     } else {
       ASSERT(value.IsStackSlot());
       __ pushl(value.ToStackSlotAddress());
     }
   }
 }
 
 
-LocationSummary* ReturnInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* ReturnInstr::MakeLocationSummary(Isolate* isolate,
+                                                  bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   locs->set_in(0, Location::RegisterLocation(EAX));
   return locs;
 }
 
 
 // Attempt optimized compilation at return instruction instead of at the entry.
 // The entry needs to be patchable, no inlined objects are allowed in the area
 // that will be overwritten by the patch instruction: a jump).
 void ReturnInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register result = locs()->in(0).reg();
   ASSERT(result == EAX);
 #if defined(DEBUG)
   __ Comment("Stack Check");
   Label done;
   const intptr_t fp_sp_dist =
       (kFirstLocalSlotFromFp + 1 - compiler->StackSize()) * kWordSize;
   ASSERT(fp_sp_dist <= 0);
   __ movl(EDI, ESP);
   __ subl(EDI, EBP);
   __ cmpl(EDI, Immediate(fp_sp_dist));
   __ j(EQUAL, &done, Assembler::kNearJump);
   __ int3();
   __ Bind(&done);
 #endif
   __ LeaveFrame();
   __ ret();
 }
 
 
-LocationSummary* LoadLocalInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* LoadLocalInstr::MakeLocationSummary(Isolate* isolate,
+                                                     bool opt) const {
   const intptr_t kNumInputs = 0;
   const intptr_t stack_index = (local().index() < 0)
       ? kFirstLocalSlotFromFp - local().index()
       : kParamEndSlotFromFp - local().index();
   return LocationSummary::Make(kNumInputs,
                                Location::StackSlot(stack_index),
                                LocationSummary::kNoCall);
 }
 
 
 void LoadLocalInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   ASSERT(!compiler->is_optimizing());
   // Nothing to do.
 }
 
 
-LocationSummary* StoreLocalInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* StoreLocalInstr::MakeLocationSummary(Isolate* isolate,
+                                                      bool opt) const {
   const intptr_t kNumInputs = 1;
   return LocationSummary::Make(kNumInputs,
                                Location::SameAsFirstInput(),
                                LocationSummary::kNoCall);
 }
 
 
 void StoreLocalInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register value = locs()->in(0).reg();
   Register result = locs()->out(0).reg();
   ASSERT(result == value);  // Assert that register assignment is correct.
   __ movl(Address(EBP, local().index() * kWordSize), value);
 }
 
 
-LocationSummary* ConstantInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* ConstantInstr::MakeLocationSummary(Isolate* isolate,
+                                                    bool opt) const {
   const intptr_t kNumInputs = 0;
   return LocationSummary::Make(kNumInputs,
                                Location::RequiresRegister(),
                                LocationSummary::kNoCall);
 }
 
 
 void ConstantInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   // The register allocator drops constant definitions that have no uses.
   if (!locs()->out(0).IsInvalid()) {
     Register result = locs()->out(0).reg();
     __ LoadObjectSafely(result, value());
   }
 }
 
 
-LocationSummary* UnboxedConstantInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* UnboxedConstantInstr::MakeLocationSummary(Isolate* isolate,
+                                                           bool opt) const {
   const intptr_t kNumInputs = 0;
   const intptr_t kNumTemps = (constant_address() == 0) ? 1 : 0;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   locs->set_out(0, Location::RequiresFpuRegister());
   if (kNumTemps == 1) {
     locs->set_temp(0, Location::RequiresRegister());
   }
   return locs;
 }
 
 
 void UnboxedConstantInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   // The register allocator drops constant definitions that have no uses.
   if (!locs()->out(0).IsInvalid()) {
      XmmRegister result = locs()->out(0).fpu_reg();
     if (constant_address() == 0) {
       Register boxed = locs()->temp(0).reg();
       __ LoadObjectSafely(boxed, value());
       __ movsd(result, FieldAddress(boxed, Double::value_offset()));
     } else if (Utils::DoublesBitEqual(Double::Cast(value()).value(), 0.0)) {
       __ xorps(result, result);
     } else {
       __ movsd(result, Address::Absolute(constant_address()));
     }
   }
 }
 
 
-LocationSummary* AssertAssignableInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* AssertAssignableInstr::MakeLocationSummary(Isolate* isolate,
+                                                            bool opt) const {
   const intptr_t kNumInputs = 3;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);

[srdjan, 2014/05/22 17:25:08]

Here and elsewhere: 80 char limit.

   summary->set_in(0, Location::RegisterLocation(EAX));  // Value.
   summary->set_in(1, Location::RegisterLocation(ECX));  // Instantiator.
   summary->set_in(2, Location::RegisterLocation(EDX));  // Type arguments.
   summary->set_out(0, Location::RegisterLocation(EAX));
   return summary;
 }
 
 
-LocationSummary* AssertBooleanInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* AssertBooleanInstr::MakeLocationSummary(Isolate* isolate,
+                                                         bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);
   locs->set_in(0, Location::RegisterLocation(EAX));
   locs->set_out(0, Location::RegisterLocation(EAX));
   return locs;
 }
 
 
 static void EmitAssertBoolean(Register reg,
                               intptr_t token_pos,
                               intptr_t deopt_id,
                               LocationSummary* locs,
@@ skipping 36 matching lines @@
     case Token::kGT: return GREATER;
     case Token::kLTE: return LESS_EQUAL;
     case Token::kGTE: return GREATER_EQUAL;
     default:
       UNREACHABLE();
       return OVERFLOW;
   }
 }
 
 
-LocationSummary* EqualityCompareInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* EqualityCompareInstr::MakeLocationSummary(Isolate* isolate,
+                                                           bool opt) const {
   const intptr_t kNumInputs = 2;
   if (operation_cid() == kMintCid) {
     const intptr_t kNumTemps = 0;
     LocationSummary* locs =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
     locs->set_in(0, Location::Pair(Location::RequiresRegister(),
                                    Location::RequiresRegister()));
     locs->set_in(1, Location::Pair(Location::RequiresRegister(),
                                    Location::RequiresRegister()));
     locs->set_out(0, Location::RequiresRegister());
     return locs;
   }
   if (operation_cid() == kDoubleCid) {
     const intptr_t kNumTemps = 0;
     LocationSummary* locs =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
     locs->set_in(0, Location::RequiresFpuRegister());
     locs->set_in(1, Location::RequiresFpuRegister());
     locs->set_out(0, Location::RequiresRegister());
     return locs;
   }
   if (operation_cid() == kSmiCid) {
     const intptr_t kNumTemps = 0;
     LocationSummary* locs =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
     locs->set_in(0, Location::RegisterOrConstant(left()));
     // Only one input can be a constant operand. The case of two constant
     // operands should be handled by constant propagation.
     // Only right can be a stack slot.
     locs->set_in(1, locs->in(0).IsConstant()
                         ? Location::RequiresRegister()
                         : Location::RegisterOrConstant(right()));
     locs->set_out(0, Location::RequiresRegister());
     return locs;
   }
@@ skipping 273 matching lines @@
 void EqualityCompareInstr::EmitBranchCode(FlowGraphCompiler* compiler,
                                           BranchInstr* branch) {
   ASSERT((kind() == Token::kNE) || (kind() == Token::kEQ));
 
   BranchLabels labels = compiler->CreateBranchLabels(branch);
   Condition true_condition = EmitComparisonCode(compiler, labels);
   EmitBranchOnCondition(compiler, true_condition, labels);
 }
 
 
-LocationSummary* TestSmiInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* TestSmiInstr::MakeLocationSummary(Isolate* isolate,
+                                                   bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   locs->set_in(0, Location::RequiresRegister());
   // Only one input can be a constant operand. The case of two constant
   // operands should be handled by constant propagation.
   locs->set_in(1, Location::RegisterOrConstant(right()));
   return locs;
 }
 
 
 Condition TestSmiInstr::EmitComparisonCode(FlowGraphCompiler* compiler,
                                            BranchLabels labels) {
@@ skipping 20 matching lines @@
 
 void TestSmiInstr::EmitBranchCode(FlowGraphCompiler* compiler,
                                   BranchInstr* branch) {
   BranchLabels labels = compiler->CreateBranchLabels(branch);
   Condition true_condition = EmitComparisonCode(compiler, labels);
   EmitBranchOnCondition(compiler, true_condition, labels);
 }
 
 
 
-LocationSummary* TestCidsInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* TestCidsInstr::MakeLocationSummary(Isolate* isolate,
+                                                    bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 1;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   locs->set_in(0, Location::RequiresRegister());
   locs->set_temp(0, Location::RequiresRegister());
   locs->set_out(0, Location::RequiresRegister());
   return locs;
 }
 
 
 Condition TestCidsInstr::EmitComparisonCode(FlowGraphCompiler* compiler,
                                             BranchLabels labels) {
   ASSERT((kind() == Token::kIS) || (kind() == Token::kISNOT));
@@ skipping 46 matching lines @@
   EmitComparisonCode(compiler, labels);
   __ Bind(&is_false);
   __ LoadObject(result_reg, Bool::False());
   __ jmp(&done, Assembler::kNearJump);
   __ Bind(&is_true);
   __ LoadObject(result_reg, Bool::True());
   __ Bind(&done);
 }
 
 
-LocationSummary* RelationalOpInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* RelationalOpInstr::MakeLocationSummary(Isolate* isolate,
+                                                        bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   if (operation_cid() == kMintCid) {
     const intptr_t kNumTemps = 0;
     LocationSummary* locs =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
     locs->set_in(0, Location::Pair(Location::RequiresRegister(),
                                    Location::RequiresRegister()));
     locs->set_in(1, Location::Pair(Location::RequiresRegister(),
                                    Location::RequiresRegister()));
     locs->set_out(0, Location::RequiresRegister());
     return locs;
   }
   if (operation_cid() == kDoubleCid) {
     LocationSummary* summary =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
     summary->set_in(0, Location::RequiresFpuRegister());
     summary->set_in(1, Location::RequiresFpuRegister());
     summary->set_out(0, Location::RequiresRegister());
     return summary;
   }
   ASSERT(operation_cid() == kSmiCid);
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RegisterOrConstant(left()));
   // Only one input can be a constant operand. The case of two constant
   // operands should be handled by constant propagation.
   summary->set_in(1, summary->in(0).IsConstant()
                          ? Location::RequiresRegister()
                          : Location::RegisterOrConstant(right()));
   summary->set_out(0, Location::RequiresRegister());
   return summary;
 }
 
@@ skipping 29 matching lines @@
 
 
 void RelationalOpInstr::EmitBranchCode(FlowGraphCompiler* compiler,
                                        BranchInstr* branch) {
   BranchLabels labels = compiler->CreateBranchLabels(branch);
   Condition true_condition = EmitComparisonCode(compiler, labels);
   EmitBranchOnCondition(compiler, true_condition, labels);
 }
 
 
-LocationSummary* NativeCallInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* NativeCallInstr::MakeLocationSummary(Isolate* isolate,
+                                                      bool opt) const {
   const intptr_t kNumInputs = 0;
   const intptr_t kNumTemps = 3;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);
   locs->set_temp(0, Location::RegisterLocation(EAX));
   locs->set_temp(1, Location::RegisterLocation(ECX));
   locs->set_temp(2, Location::RegisterLocation(EDX));
   locs->set_out(0, Location::RegisterLocation(EAX));
   return locs;
 }
 
 
 void NativeCallInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   ASSERT(locs()->temp(0).reg() == EAX);
@@ skipping 29 matching lines @@
     return false;
   }
   const int64_t index = Smi::Cast(constant->value()).AsInt64Value();
   const intptr_t scale = FlowGraphCompiler::ElementSizeFor(cid);
   const intptr_t offset = FlowGraphCompiler::DataOffsetFor(cid);
   const int64_t displacement = index * scale + offset;
   return Utils::IsInt(32, displacement);
 }
 
 
-LocationSummary* StringFromCharCodeInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* StringFromCharCodeInstr::MakeLocationSummary(Isolate* isolate,
+                                                              bool opt) const {
   const intptr_t kNumInputs = 1;
   // TODO(fschneider): Allow immediate operands for the char code.
   return LocationSummary::Make(kNumInputs,
                                Location::RequiresRegister(),
                                LocationSummary::kNoCall);
 }
 
 
 void StringFromCharCodeInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register char_code = locs()->in(0).reg();
   Register result = locs()->out(0).reg();
   __ movl(result,
           Immediate(reinterpret_cast<uword>(Symbols::PredefinedAddress())));
   __ movl(result, Address(result,
                           char_code,
                           TIMES_HALF_WORD_SIZE,  // Char code is a smi.
                           Symbols::kNullCharCodeSymbolOffset * kWordSize));
 }
 
 
-LocationSummary* StringToCharCodeInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* StringToCharCodeInstr::MakeLocationSummary(Isolate* isolate,
+                                                            bool opt) const {
   const intptr_t kNumInputs = 1;
   return LocationSummary::Make(kNumInputs,
                                Location::RequiresRegister(),
                                LocationSummary::kNoCall);
 }
 
 
 void StringToCharCodeInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   ASSERT(cid_ == kOneByteStringCid);
   Register str = locs()->in(0).reg();
   Register result = locs()->out(0).reg();
   Label is_one, done;
   __ movl(result, FieldAddress(str, String::length_offset()));
   __ cmpl(result, Immediate(Smi::RawValue(1)));
   __ j(EQUAL, &is_one, Assembler::kNearJump);
   __ movl(result, Immediate(Smi::RawValue(-1)));
   __ jmp(&done);
   __ Bind(&is_one);
   __ movzxb(result, FieldAddress(str, OneByteString::data_offset()));
   __ SmiTag(result);
   __ Bind(&done);
 }
 
 
-LocationSummary* StringInterpolateInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* StringInterpolateInstr::MakeLocationSummary(Isolate* isolate,
+                                                             bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);
   summary->set_in(0, Location::RegisterLocation(EAX));
   summary->set_out(0, Location::RegisterLocation(EAX));
   return summary;
 }
 
 
 void StringInterpolateInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register array = locs()->in(0).reg();
   __ pushl(array);
   const int kNumberOfArguments = 1;
   const Array& kNoArgumentNames = Object::null_array();
   compiler->GenerateStaticCall(deopt_id(),
                                token_pos(),
                                CallFunction(),
                                kNumberOfArguments,
                                kNoArgumentNames,
                                locs());
   ASSERT(locs()->out(0).reg() == EAX);
 }
 
 
-LocationSummary* LoadUntaggedInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* LoadUntaggedInstr::MakeLocationSummary(Isolate* isolate,
+                                                        bool opt) const {
   const intptr_t kNumInputs = 1;
   return LocationSummary::Make(kNumInputs,
                                Location::RequiresRegister(),
                                LocationSummary::kNoCall);
 }
 
 
 void LoadUntaggedInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register object = locs()->in(0).reg();
   Register result = locs()->out(0).reg();
   __ movl(result, FieldAddress(object, offset()));
 }
 
 
-LocationSummary* LoadClassIdInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* LoadClassIdInstr::MakeLocationSummary(Isolate* isolate,
+                                                       bool opt) const {
   const intptr_t kNumInputs = 1;
   return LocationSummary::Make(kNumInputs,
                                Location::RequiresRegister(),
                                LocationSummary::kNoCall);
 }
 
 
 void LoadClassIdInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register object = locs()->in(0).reg();
   Register result = locs()->out(0).reg();
@@ skipping 79 matching lines @@
       return kUnboxedInt32x4;
     case kTypedDataFloat64x2ArrayCid:
       return kUnboxedFloat64x2;
     default:
       UNIMPLEMENTED();
       return kTagged;
   }
 }
 
 
-LocationSummary* LoadIndexedInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* LoadIndexedInstr::MakeLocationSummary(Isolate* isolate,
+                                                       bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   locs->set_in(0, Location::RequiresRegister());
   if (CanBeImmediateIndex(index(), class_id())) {
     // CanBeImmediateIndex must return false for unsafe smis.
     locs->set_in(1, Location::Constant(index()->BoundConstant()));
   } else {
     // The index is either untagged (element size == 1) or a smi (for all
     // element sizes > 1).
     locs->set_in(1, (index_scale() == 1)
                         ? Location::WritableRegister()
                         : Location::RequiresRegister());
@@ skipping 179 matching lines @@
       return kUnboxedInt32x4;
     case kTypedDataFloat64x2ArrayCid:
       return kUnboxedFloat64x2;
     default:
       UNIMPLEMENTED();
       return kTagged;
   }
 }
 
 
-LocationSummary* StoreIndexedInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* StoreIndexedInstr::MakeLocationSummary(Isolate* isolate,
+                                                        bool opt) const {
   const intptr_t kNumInputs = 3;
   const intptr_t kNumTemps = 0;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   locs->set_in(0, Location::RequiresRegister());
   if (CanBeImmediateIndex(index(), class_id())) {
     // CanBeImmediateIndex must return false for unsafe smis.
     locs->set_in(1, Location::Constant(index()->BoundConstant()));
   } else {
     // The index is either untagged (element size == 1) or a smi (for all
     // element sizes > 1).
     locs->set_in(1, (index_scale() == 1)
                         ? Location::WritableRegister()
                         : Location::RequiresRegister());
@@ skipping 162 matching lines @@
     case kTypedDataFloat32x4ArrayCid:
     case kTypedDataFloat64x2ArrayCid:
       __ movups(element_address, locs()->in(2).fpu_reg());
       break;
     default:
       UNREACHABLE();
   }
 }
 
 
-LocationSummary* GuardFieldInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* GuardFieldInstr::MakeLocationSummary(Isolate* isolate,
+                                                      bool opt) const {
   const intptr_t kNumInputs = 1;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, 0, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, 0, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresRegister());
   const bool field_has_length = field().needs_length_check();
   const bool need_value_temp_reg =
       (field_has_length || ((value()->Type()->ToCid() == kDynamicCid) &&
                             (field().guarded_cid() != kSmiCid)));
   if (need_value_temp_reg) {
     summary->AddTemp(Location::RequiresRegister());
   }
   const bool need_field_temp_reg =
       field_has_length || (field().guarded_cid() == kIllegalCid);
@@ skipping 350 matching lines @@
     compiler->RestoreLiveRegisters(locs);
     __ jmp(exit_label());
   }
 
  private:
   StoreInstanceFieldInstr* instruction_;
   const Class& cls_;
 };
 
 
-LocationSummary* StoreInstanceFieldInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* StoreInstanceFieldInstr::MakeLocationSummary(Isolate* isolate,
+                                                              bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps,
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps,
           !field().IsNull() &&
           ((field().guarded_cid() == kIllegalCid) || is_initialization_)
           ? LocationSummary::kCallOnSlowPath
           : LocationSummary::kNoCall);
 
   summary->set_in(0, Location::RequiresRegister());
   if (IsUnboxedStore() && opt) {
     summary->set_in(1, Location::RequiresFpuRegister());
     summary->AddTemp(Location::RequiresRegister());
     summary->AddTemp(Location::RequiresRegister());
@@ skipping 230 matching lines @@
     } else {
       Register value_reg = locs()->in(1).reg();
       __ StoreIntoObjectNoBarrier(instance_reg,
           FieldAddress(instance_reg, offset_in_bytes_), value_reg);
     }
   }
   __ Bind(&skip_store);
 }
 
 
-LocationSummary* LoadStaticFieldInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* LoadStaticFieldInstr::MakeLocationSummary(Isolate* isolate,
+                                                           bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresRegister());
   // By specifying same register as input, our simple register allocator can
   // generate better code.
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 // When the parser is building an implicit static getter for optimization,
 // it can generate a function body where deoptimization ids do not line up
 // with the unoptimized code.
 //
 // This is safe only so long as LoadStaticFieldInstr cannot deoptimize.
 void LoadStaticFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register field = locs()->in(0).reg();
   Register result = locs()->out(0).reg();
   __ movl(result, FieldAddress(field, Field::value_offset()));
 }
 
 
-LocationSummary* StoreStaticFieldInstr::MakeLocationSummary(bool opt) const {
-  LocationSummary* locs = new LocationSummary(1, 1, LocationSummary::kNoCall);
+LocationSummary* StoreStaticFieldInstr::MakeLocationSummary(Isolate* isolate,
+                                                            bool opt) const {
+  LocationSummary* locs = new (isolate) LocationSummary(isolate, 1, 1, LocationSummary::kNoCall);
   locs->set_in(0, value()->NeedsStoreBuffer() ? Location::WritableRegister()
                                               : Location::RequiresRegister());
   locs->set_temp(0, Location::RequiresRegister());
   return locs;
 }
 
 
 void StoreStaticFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register value = locs()->in(0).reg();
   Register temp = locs()->temp(0).reg();
 
   __ LoadObject(temp, field());
   if (this->value()->NeedsStoreBuffer()) {
     __ StoreIntoObject(temp,
         FieldAddress(temp, Field::value_offset()), value, CanValueBeSmi());
   } else {
     __ StoreIntoObjectNoBarrier(
         temp, FieldAddress(temp, Field::value_offset()), value);
   }
 }
 
 
-LocationSummary* InstanceOfInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* InstanceOfInstr::MakeLocationSummary(Isolate* isolate,
+                                                      bool opt) const {
   const intptr_t kNumInputs = 3;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);
   summary->set_in(0, Location::RegisterLocation(EAX));
   summary->set_in(1, Location::RegisterLocation(ECX));
   summary->set_in(2, Location::RegisterLocation(EDX));
   summary->set_out(0, Location::RegisterLocation(EAX));
   return summary;
 }
 
 
 void InstanceOfInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   ASSERT(locs()->in(0).reg() == EAX);  // Value.
   ASSERT(locs()->in(1).reg() == ECX);  // Instantiator.
   ASSERT(locs()->in(2).reg() == EDX);  // Instantiator type arguments.
 
   compiler->GenerateInstanceOf(token_pos(),
                                deopt_id(),
                                type(),
                                negate_result(),
                                locs());
   ASSERT(locs()->out(0).reg() == EAX);
 }
 
 
 // TODO(srdjan): In case of constant inputs make CreateArray kNoCall and
 // use slow path stub.
-LocationSummary* CreateArrayInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* CreateArrayInstr::MakeLocationSummary(Isolate* isolate,
+                                                       bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);
   locs->set_in(0, Location::RegisterLocation(ECX));
   locs->set_in(1, Location::RegisterLocation(EDX));
   locs->set_out(0, Location::RegisterLocation(EAX));
   return locs;
 }
 
 
 // Inlines array allocation for known constant values.
 static void InlineArrayAllocation(FlowGraphCompiler* compiler,
                                    intptr_t num_elements,
@@ skipping 190 matching lines @@
     compiler->RestoreLiveRegisters(locs);
 
     __ jmp(exit_label());
   }
 
  private:
   Instruction* instruction_;
 };
 
 
-LocationSummary* LoadFieldInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* LoadFieldInstr::MakeLocationSummary(Isolate* isolate,
+                                                     bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* locs =
-      new LocationSummary(
+      new (isolate) LocationSummary(isolate, 
           kNumInputs, kNumTemps,
           (opt && !IsPotentialUnboxedLoad())
           ? LocationSummary::kNoCall
           : LocationSummary::kCallOnSlowPath);
 
   locs->set_in(0, Location::RequiresRegister());
 
   if (IsUnboxedLoad() && opt) {
     locs->AddTemp(Location::RequiresRegister());
   } else if (IsPotentialUnboxedLoad()) {
@@ skipping 121 matching lines @@
       __ jmp(&done);
     }
 
     __ Bind(&load_pointer);
   }
   __ movl(result, FieldAddress(instance_reg, offset_in_bytes()));
   __ Bind(&done);
 }
 
 
-LocationSummary* InstantiateTypeInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* InstantiateTypeInstr::MakeLocationSummary(Isolate* isolate,
+                                                           bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);
   locs->set_in(0, Location::RegisterLocation(EAX));
   locs->set_out(0, Location::RegisterLocation(EAX));
   return locs;
 }
 
 
 void InstantiateTypeInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register instantiator_reg = locs()->in(0).reg();
   Register result_reg = locs()->out(0).reg();
 
   // 'instantiator_reg' is the instantiator TypeArguments object (or null).
   // A runtime call to instantiate the type is required.
   __ PushObject(Object::ZoneHandle());  // Make room for the result.
   __ PushObject(type());
   __ pushl(instantiator_reg);  // Push instantiator type arguments.
   compiler->GenerateRuntimeCall(token_pos(),
                                 deopt_id(),
                                 kInstantiateTypeRuntimeEntry,
                                 2,
                                 locs());
   __ Drop(2);  // Drop instantiator and uninstantiated type.
   __ popl(result_reg);  // Pop instantiated type.
   ASSERT(instantiator_reg == result_reg);
 }
 
 
 LocationSummary* InstantiateTypeArgumentsInstr::MakeLocationSummary(
-    bool opt) const {
+    Isolate* isolate, bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);
   locs->set_in(0, Location::RegisterLocation(EAX));
   locs->set_out(0, Location::RegisterLocation(EAX));
   return locs;
 }
 
 
 void InstantiateTypeArgumentsInstr::EmitNativeCode(
     FlowGraphCompiler* compiler) {
   Register instantiator_reg = locs()->in(0).reg();
   Register result_reg = locs()->out(0).reg();
@@ skipping 46 matching lines @@
                                 deopt_id(),
                                 kInstantiateTypeArgumentsRuntimeEntry,
                                 2,
                                 locs());
   __ Drop(2);  // Drop instantiator and uninstantiated type arguments.
   __ popl(result_reg);  // Pop instantiated type arguments.
   __ Bind(&type_arguments_instantiated);
 }
 
 
-LocationSummary* AllocateContextInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* AllocateContextInstr::MakeLocationSummary(Isolate* isolate,
+                                                           bool opt) const {
   if (opt) {
     const intptr_t kNumInputs = 0;
     const intptr_t kNumTemps = 2;
-    LocationSummary* locs = new LocationSummary(
+    LocationSummary* locs = new (isolate) LocationSummary(isolate, 
         kNumInputs, kNumTemps, LocationSummary::kCallOnSlowPath);
     locs->set_temp(0, Location::RegisterLocation(ECX));
     locs->set_temp(1, Location::RegisterLocation(EBX));
     locs->set_out(0, Location::RegisterLocation(EAX));
     return locs;
   }
   const intptr_t kNumInputs = 0;
   const intptr_t kNumTemps = 1;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);
   locs->set_temp(0, Location::RegisterLocation(EDX));
   locs->set_out(0, Location::RegisterLocation(EAX));
   return locs;
 }
 
 
 class AllocateContextSlowPath : public SlowPathCode {
  public:
   explicit AllocateContextSlowPath(AllocateContextInstr* instruction)
       : instruction_(instruction) { }
@@ skipping 101 matching lines @@
   __ movl(EDX, Immediate(num_context_variables()));
   const ExternalLabel label("alloc_context",
                             StubCode::AllocateContextEntryPoint());
   compiler->GenerateCall(token_pos(),
                          &label,
                          PcDescriptors::kOther,
                          locs());
 }
 
 
-LocationSummary* CloneContextInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* CloneContextInstr::MakeLocationSummary(Isolate* isolate,
+                                                        bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);
   locs->set_in(0, Location::RegisterLocation(EAX));
   locs->set_out(0, Location::RegisterLocation(EAX));
   return locs;
 }
 
 
 void CloneContextInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register context_value = locs()->in(0).reg();
   Register result = locs()->out(0).reg();
 
   __ PushObject(Object::ZoneHandle());  // Make room for the result.
   __ pushl(context_value);
   compiler->GenerateRuntimeCall(token_pos(),
                                 deopt_id(),
                                 kCloneContextRuntimeEntry,
                                 1,
                                 locs());
   __ popl(result);  // Remove argument.
   __ popl(result);  // Get result (cloned context).
 }
 
 
-LocationSummary* CatchBlockEntryInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* CatchBlockEntryInstr::MakeLocationSummary(Isolate* isolate,
+                                                           bool opt) const {
   UNREACHABLE();
   return NULL;
 }
 
 
 void CatchBlockEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   __ Bind(compiler->GetJumpLabel(this));
   compiler->AddExceptionHandler(catch_try_index(),
                                 try_index(),
                                 compiler->assembler()->CodeSize(),
@@ skipping 12 matching lines @@
 
   // Restore stack and initialize the two exception variables:
   // exception and stack trace variables.
   __ movl(Address(EBP, exception_var().index() * kWordSize),
           kExceptionObjectReg);
   __ movl(Address(EBP, stacktrace_var().index() * kWordSize),
           kStackTraceObjectReg);
 }
 
 
-LocationSummary* CheckStackOverflowInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* CheckStackOverflowInstr::MakeLocationSummary(Isolate* isolate,
+                                                              bool opt) const {
   const intptr_t kNumInputs = 0;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs,
+      new (isolate) LocationSummary(isolate, kNumInputs,
                           kNumTemps,
                           LocationSummary::kCallOnSlowPath);
   return summary;
 }
 
 
 class CheckStackOverflowSlowPath : public SlowPathCode {
  public:
   explicit CheckStackOverflowSlowPath(CheckStackOverflowInstr* instruction)
       : instruction_(instruction) { }
@@ skipping 184 matching lines @@
     __ shll(left, right);
     __ sarl(left, right);
     __ cmpl(left, temp);
     __ j(NOT_EQUAL, deopt);  // Overflow.
     // Shift for result now we know there is no overflow.
     __ shll(left, right);
   }
 }
 
 
-LocationSummary* BinarySmiOpInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* BinarySmiOpInstr::MakeLocationSummary(Isolate* isolate,
+                                                       bool opt) const {
   const intptr_t kNumInputs = 2;
   if (op_kind() == Token::kTRUNCDIV) {
     const intptr_t kNumTemps = 1;
     LocationSummary* summary =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
     if (RightIsPowerOfTwoConstant()) {
       summary->set_in(0, Location::RequiresRegister());
       ConstantInstr* right_constant = right()->definition()->AsConstant();
       // The programmer only controls one bit, so the constant is safe.
       summary->set_in(1, Location::Constant(right_constant->value()));
       summary->set_temp(0, Location::RequiresRegister());
       summary->set_out(0, Location::SameAsFirstInput());
     } else {
       // Both inputs must be writable because they will be untagged.
       summary->set_in(0, Location::RegisterLocation(EAX));
       summary->set_in(1, Location::WritableRegister());
       summary->set_out(0, Location::SameAsFirstInput());
       // Will be used for sign extension and division.
       summary->set_temp(0, Location::RegisterLocation(EDX));
     }
     return summary;
   } else if (op_kind() == Token::kMOD) {
     const intptr_t kNumTemps = 1;
     LocationSummary* summary =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
     // Both inputs must be writable because they will be untagged.
     summary->set_in(0, Location::RegisterLocation(EDX));
     summary->set_in(1, Location::WritableRegister());
     summary->set_out(0, Location::SameAsFirstInput());
     // Will be used for sign extension and division.
     summary->set_temp(0, Location::RegisterLocation(EAX));
     return summary;
   } else if (op_kind() == Token::kSHR) {
     const intptr_t kNumTemps = 0;
     LocationSummary* summary =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
     summary->set_in(0, Location::RequiresRegister());
     summary->set_in(1, Location::FixedRegisterOrSmiConstant(right(), ECX));
     summary->set_out(0, Location::SameAsFirstInput());
     return summary;
   } else if (op_kind() == Token::kSHL) {
     const intptr_t kNumTemps = 0;
     LocationSummary* summary =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
     summary->set_in(0, Location::RequiresRegister());
     summary->set_in(1, Location::FixedRegisterOrSmiConstant(right(), ECX));
     if (!is_truncating()) {
       summary->AddTemp(Location::RequiresRegister());
     }
     summary->set_out(0, Location::SameAsFirstInput());
     return summary;
   } else {
     const intptr_t kNumTemps = 0;
     LocationSummary* summary =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
     summary->set_in(0, Location::RequiresRegister());
     ConstantInstr* constant = right()->definition()->AsConstant();
     if (constant != NULL) {
       summary->set_in(1, Location::RegisterOrSmiConstant(right()));
     } else {
       summary->set_in(1, Location::PrefersRegister());
     }
     summary->set_out(0, Location::SameAsFirstInput());
     return summary;
   }
@@ skipping 299 matching lines @@
       UNREACHABLE();
       break;
     }
     default:
       UNREACHABLE();
       break;
   }
 }
 
 
-LocationSummary* CheckEitherNonSmiInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* CheckEitherNonSmiInstr::MakeLocationSummary(Isolate* isolate,
+                                                             bool opt) const {
   intptr_t left_cid = left()->Type()->ToCid();
   intptr_t right_cid = right()->Type()->ToCid();
   ASSERT((left_cid != kDoubleCid) && (right_cid != kDoubleCid));
   const intptr_t kNumInputs = 2;
   const bool need_temp = (left()->definition() != right()->definition())
                       &&(left_cid != kSmiCid)
                       && (right_cid != kSmiCid);
   const intptr_t kNumTemps = need_temp ? 1 : 0;
   LocationSummary* summary =
-    new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+    new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresRegister());
   summary->set_in(1, Location::RequiresRegister());
   if (need_temp) summary->set_temp(0, Location::RequiresRegister());
   return summary;
 }
 
 
 void CheckEitherNonSmiInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Label* deopt = compiler->AddDeoptStub(deopt_id(),
                                         ICData::kDeoptBinaryDoubleOp);
@@ skipping 13 matching lines @@
     __ orl(temp, right);
     __ testl(temp, Immediate(kSmiTagMask));
   }
   __ j(ZERO, deopt);
 }
 
 
 
 
 
-LocationSummary* BoxDoubleInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* BoxDoubleInstr::MakeLocationSummary(Isolate* isolate,
+                                                     bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs,
+      new (isolate) LocationSummary(isolate, kNumInputs,
                           kNumTemps,
                           LocationSummary::kCallOnSlowPath);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::RequiresRegister());
   return summary;
 }
 
 
 void BoxDoubleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   BoxDoubleSlowPath* slow_path = new BoxDoubleSlowPath(this);
   compiler->AddSlowPathCode(slow_path);
 
   Register out_reg = locs()->out(0).reg();
   XmmRegister value = locs()->in(0).fpu_reg();
 
   __ TryAllocate(compiler->double_class(),
                  slow_path->entry_label(),
                  Assembler::kFarJump,
                  out_reg,
                  kNoRegister);
   __ Bind(slow_path->exit_label());
   __ movsd(FieldAddress(out_reg, Double::value_offset()), value);
 }
 
 
-LocationSummary* UnboxDoubleInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* UnboxDoubleInstr::MakeLocationSummary(Isolate* isolate,
+                                                       bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t value_cid = value()->Type()->ToCid();
   const bool needs_temp = ((value_cid != kSmiCid) && (value_cid != kDoubleCid));
   const bool needs_writable_input = (value_cid == kSmiCid);
   const intptr_t kNumTemps = needs_temp ? 1 : 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, needs_writable_input
                      ? Location::WritableRegister()
                      : Location::RequiresRegister());
   if (needs_temp) summary->set_temp(0, Location::RequiresRegister());
   summary->set_out(0, Location::RequiresFpuRegister());
   return summary;
 }
 
 
 void UnboxDoubleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
@@ skipping 30 matching lines @@
       __ Bind(&is_smi);
       __ movl(temp, value);
       __ SmiUntag(temp);
       __ cvtsi2sd(result, temp);
       __ Bind(&done);
     }
   }
 }
 
 
-LocationSummary* BoxFloat32x4Instr::MakeLocationSummary(bool opt) const {
+LocationSummary* BoxFloat32x4Instr::MakeLocationSummary(Isolate* isolate,
+                                                        bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs,
+      new (isolate) LocationSummary(isolate, kNumInputs,
                           kNumTemps,
                           LocationSummary::kCallOnSlowPath);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::RequiresRegister());
   return summary;
 }
 
 
 void BoxFloat32x4Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
   BoxFloat32x4SlowPath* slow_path = new BoxFloat32x4SlowPath(this);
   compiler->AddSlowPathCode(slow_path);
 
   Register out_reg = locs()->out(0).reg();
   XmmRegister value = locs()->in(0).fpu_reg();
 
   __ TryAllocate(compiler->float32x4_class(),
                  slow_path->entry_label(),
                  Assembler::kFarJump,
                  out_reg,
                  kNoRegister);
   __ Bind(slow_path->exit_label());
   __ movups(FieldAddress(out_reg, Float32x4::value_offset()), value);
 }
 
 
-LocationSummary* UnboxFloat32x4Instr::MakeLocationSummary(bool opt) const {
+LocationSummary* UnboxFloat32x4Instr::MakeLocationSummary(Isolate* isolate,
+                                                          bool opt) const {
   const intptr_t value_cid = value()->Type()->ToCid();
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = value_cid == kFloat32x4Cid ? 0 : 1;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresRegister());
   if (kNumTemps > 0) {
     ASSERT(kNumTemps == 1);
     summary->set_temp(0, Location::RequiresRegister());
   }
   summary->set_out(0, Location::RequiresFpuRegister());
   return summary;
 }
 
 
 void UnboxFloat32x4Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
   const intptr_t value_cid = value()->Type()->ToCid();
   const Register value = locs()->in(0).reg();
   const XmmRegister result = locs()->out(0).fpu_reg();
 
   if (value_cid != kFloat32x4Cid) {
     const Register temp = locs()->temp(0).reg();
     Label* deopt = compiler->AddDeoptStub(deopt_id_, ICData::kDeoptCheckClass);
     __ testl(value, Immediate(kSmiTagMask));
     __ j(ZERO, deopt);
     __ CompareClassId(value, kFloat32x4Cid, temp);
     __ j(NOT_EQUAL, deopt);
   }
   __ movups(result, FieldAddress(value, Float32x4::value_offset()));
 }
 
 
-LocationSummary* BoxFloat64x2Instr::MakeLocationSummary(bool opt) const {
+LocationSummary* BoxFloat64x2Instr::MakeLocationSummary(Isolate* isolate,
+                                                        bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs,
+      new (isolate) LocationSummary(isolate, kNumInputs,
                           kNumTemps,
                           LocationSummary::kCallOnSlowPath);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::RequiresRegister());
   return summary;
 }
 
 
 void BoxFloat64x2Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
   BoxFloat64x2SlowPath* slow_path = new BoxFloat64x2SlowPath(this);
   compiler->AddSlowPathCode(slow_path);
 
   Register out_reg = locs()->out(0).reg();
   XmmRegister value = locs()->in(0).fpu_reg();
 
   __ TryAllocate(compiler->float64x2_class(),
                  slow_path->entry_label(),
                  Assembler::kFarJump,
                  out_reg,
                  kNoRegister);
   __ Bind(slow_path->exit_label());
   __ movups(FieldAddress(out_reg, Float64x2::value_offset()), value);
 }
 
 
-LocationSummary* UnboxFloat64x2Instr::MakeLocationSummary(bool opt) const {
+LocationSummary* UnboxFloat64x2Instr::MakeLocationSummary(Isolate* isolate,
+                                                          bool opt) const {
   const intptr_t value_cid = value()->Type()->ToCid();
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = value_cid == kFloat64x2Cid ? 0 : 1;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresRegister());
   if (kNumTemps > 0) {
     ASSERT(kNumTemps == 1);
     summary->set_temp(0, Location::RequiresRegister());
   }
   summary->set_out(0, Location::RequiresFpuRegister());
   return summary;
 }
 
 
 void UnboxFloat64x2Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
   const intptr_t value_cid = value()->Type()->ToCid();
   const Register value = locs()->in(0).reg();
   const XmmRegister result = locs()->out(0).fpu_reg();
 
   if (value_cid != kFloat64x2Cid) {
     const Register temp = locs()->temp(0).reg();
     Label* deopt = compiler->AddDeoptStub(deopt_id_, ICData::kDeoptCheckClass);
     __ testl(value, Immediate(kSmiTagMask));
     __ j(ZERO, deopt);
     __ CompareClassId(value, kFloat64x2Cid, temp);
     __ j(NOT_EQUAL, deopt);
   }
   __ movups(result, FieldAddress(value, Float64x2::value_offset()));
 }
 
 
-LocationSummary* BoxInt32x4Instr::MakeLocationSummary(bool opt) const {
+LocationSummary* BoxInt32x4Instr::MakeLocationSummary(Isolate* isolate,
+                                                      bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs,
+      new (isolate) LocationSummary(isolate, kNumInputs,
                           kNumTemps,
                           LocationSummary::kCallOnSlowPath);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::RequiresRegister());
   return summary;
 }
 
 
 class BoxInt32x4SlowPath : public SlowPathCode {
  public:
@@ skipping 37 matching lines @@
   __ TryAllocate(compiler->int32x4_class(),
                  slow_path->entry_label(),
                  Assembler::kFarJump,
                  out_reg,
                  kNoRegister);
   __ Bind(slow_path->exit_label());
   __ movups(FieldAddress(out_reg, Int32x4::value_offset()), value);
 }
 
 
-LocationSummary* UnboxInt32x4Instr::MakeLocationSummary(bool opt) const {
+LocationSummary* UnboxInt32x4Instr::MakeLocationSummary(Isolate* isolate,
+                                                        bool opt) const {
   const intptr_t value_cid = value()->Type()->ToCid();
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = value_cid == kInt32x4Cid ? 0 : 1;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresRegister());
   if (kNumTemps > 0) {
     ASSERT(kNumTemps == 1);
     summary->set_temp(0, Location::RequiresRegister());
   }
   summary->set_out(0, Location::RequiresFpuRegister());
   return summary;
 }
 
 
 void UnboxInt32x4Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
   const intptr_t value_cid = value()->Type()->ToCid();
   const Register value = locs()->in(0).reg();
   const XmmRegister result = locs()->out(0).fpu_reg();
 
   if (value_cid != kInt32x4Cid) {
     const Register temp = locs()->temp(0).reg();
     Label* deopt = compiler->AddDeoptStub(deopt_id_, ICData::kDeoptCheckClass);
     __ testl(value, Immediate(kSmiTagMask));
     __ j(ZERO, deopt);
     __ CompareClassId(value, kInt32x4Cid, temp);
     __ j(NOT_EQUAL, deopt);
   }
   __ movups(result, FieldAddress(value, Int32x4::value_offset()));
 }
 
 
 
-LocationSummary* BinaryDoubleOpInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* BinaryDoubleOpInstr::MakeLocationSummary(Isolate* isolate,
+                                                          bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void BinaryDoubleOpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister left = locs()->in(0).fpu_reg();
   XmmRegister right = locs()->in(1).fpu_reg();
 
   ASSERT(locs()->out(0).fpu_reg() == left);
 
   switch (op_kind()) {
     case Token::kADD: __ addsd(left, right); break;
     case Token::kSUB: __ subsd(left, right); break;
     case Token::kMUL: __ mulsd(left, right); break;
     case Token::kDIV: __ divsd(left, right); break;
     default: UNREACHABLE();
   }
 }
 
 
-LocationSummary* BinaryFloat32x4OpInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* BinaryFloat32x4OpInstr::MakeLocationSummary(Isolate* isolate,
+                                                             bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void BinaryFloat32x4OpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister left = locs()->in(0).fpu_reg();
   XmmRegister right = locs()->in(1).fpu_reg();
 
   ASSERT(locs()->out(0).fpu_reg() == left);
 
   switch (op_kind()) {
     case Token::kADD: __ addps(left, right); break;
     case Token::kSUB: __ subps(left, right); break;
     case Token::kMUL: __ mulps(left, right); break;
     case Token::kDIV: __ divps(left, right); break;
     default: UNREACHABLE();
   }
 }
 
 
-LocationSummary* BinaryFloat64x2OpInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* BinaryFloat64x2OpInstr::MakeLocationSummary(Isolate* isolate,
+                                                             bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void BinaryFloat64x2OpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister left = locs()->in(0).fpu_reg();
   XmmRegister right = locs()->in(1).fpu_reg();
 
   ASSERT(locs()->out(0).fpu_reg() == left);
 
   switch (op_kind()) {
     case Token::kADD: __ addpd(left, right); break;
     case Token::kSUB: __ subpd(left, right); break;
     case Token::kMUL: __ mulpd(left, right); break;
     case Token::kDIV: __ divpd(left, right); break;
     default: UNREACHABLE();
   }
 }
 
 
-LocationSummary* Simd32x4ShuffleInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Simd32x4ShuffleInstr::MakeLocationSummary(Isolate* isolate,
+                                                           bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Simd32x4ShuffleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister value = locs()->in(0).fpu_reg();
 
   ASSERT(locs()->out(0).fpu_reg() == value);
@@ skipping 17 matching lines @@
       break;
     case MethodRecognizer::kFloat32x4Shuffle:
     case MethodRecognizer::kInt32x4Shuffle:
       __ shufps(value, value, Immediate(mask_));
       break;
     default: UNREACHABLE();
   }
 }
 
 
-LocationSummary* Simd32x4ShuffleMixInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Simd32x4ShuffleMixInstr::MakeLocationSummary(Isolate* isolate,
+                                                              bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Simd32x4ShuffleMixInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister left = locs()->in(0).fpu_reg();
   XmmRegister right = locs()->in(1).fpu_reg();
 
   ASSERT(locs()->out(0).fpu_reg() == left);
   switch (op_kind()) {
     case MethodRecognizer::kFloat32x4ShuffleMix:
     case MethodRecognizer::kInt32x4ShuffleMix:
       __ shufps(left, right, Immediate(mask_));
       break;
     default: UNREACHABLE();
   }
 }
 
 
-LocationSummary* Simd32x4GetSignMaskInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Simd32x4GetSignMaskInstr::MakeLocationSummary(Isolate* isolate,
+                                                               bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::RequiresRegister());
   return summary;
 }
 
 
 void Simd32x4GetSignMaskInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister value = locs()->in(0).fpu_reg();
   Register out = locs()->out(0).reg();
 
   __ movmskps(out, value);
   __ SmiTag(out);
 }
 
 
 LocationSummary* Float32x4ConstructorInstr::MakeLocationSummary(
-    bool opt) const {
+    Isolate* isolate, bool opt) const {
   const intptr_t kNumInputs = 4;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_in(2, Location::RequiresFpuRegister());
   summary->set_in(3, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float32x4ConstructorInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
@@ skipping 12 matching lines @@
   __ cvtsd2ss(v0, v0);
   __ movss(Address(ESP, 8), v0);
   __ movsd(v0, v3);
   __ cvtsd2ss(v0, v0);
   __ movss(Address(ESP, 12), v0);
   __ movups(v0, Address(ESP, 0));
   __ addl(ESP, Immediate(16));
 }
 
 
-LocationSummary* Float32x4ZeroInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float32x4ZeroInstr::MakeLocationSummary(Isolate* isolate,
+                                                         bool opt) const {
   const intptr_t kNumInputs = 0;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_out(0, Location::RequiresFpuRegister());
   return summary;
 }
 
 
 void Float32x4ZeroInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister value = locs()->out(0).fpu_reg();
   __ xorps(value, value);
 }
 
 
-LocationSummary* Float32x4SplatInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float32x4SplatInstr::MakeLocationSummary(Isolate* isolate,
+                                                          bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float32x4SplatInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister value = locs()->out(0).fpu_reg();
   ASSERT(locs()->in(0).fpu_reg() == locs()->out(0).fpu_reg());
   // Convert to Float32.
   __ cvtsd2ss(value, value);
   // Splat across all lanes.
   __ shufps(value, value, Immediate(0x00));
 }
 
 
-LocationSummary* Float32x4ComparisonInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float32x4ComparisonInstr::MakeLocationSummary(Isolate* isolate,
+                                                               bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float32x4ComparisonInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister left = locs()->in(0).fpu_reg();
   XmmRegister right = locs()->in(1).fpu_reg();
@@ skipping 18 matching lines @@
       break;
     case MethodRecognizer::kFloat32x4LessThanOrEqual:
       __ cmppsle(left, right);
       break;
 
     default: UNREACHABLE();
   }
 }
 
 
-LocationSummary* Float32x4MinMaxInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float32x4MinMaxInstr::MakeLocationSummary(Isolate* isolate,
+                                                           bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float32x4MinMaxInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister left = locs()->in(0).fpu_reg();
   XmmRegister right = locs()->in(1).fpu_reg();
 
   ASSERT(locs()->out(0).fpu_reg() == left);
 
   switch (op_kind()) {
     case MethodRecognizer::kFloat32x4Min:
       __ minps(left, right);
       break;
     case MethodRecognizer::kFloat32x4Max:
       __ maxps(left, right);
       break;
     default: UNREACHABLE();
   }
 }
 
 
-LocationSummary* Float32x4ScaleInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float32x4ScaleInstr::MakeLocationSummary(Isolate* isolate,
+                                                          bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float32x4ScaleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister left = locs()->in(0).fpu_reg();
   XmmRegister right = locs()->in(1).fpu_reg();
 
   ASSERT(locs()->out(0).fpu_reg() == left);
 
   switch (op_kind()) {
     case MethodRecognizer::kFloat32x4Scale:
       __ cvtsd2ss(left, left);
       __ shufps(left, left, Immediate(0x00));
       __ mulps(left, right);
       break;
     default: UNREACHABLE();
   }
 }
 
 
-LocationSummary* Float32x4SqrtInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float32x4SqrtInstr::MakeLocationSummary(Isolate* isolate,
+                                                         bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float32x4SqrtInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister left = locs()->in(0).fpu_reg();
 
   ASSERT(locs()->out(0).fpu_reg() == left);
 
   switch (op_kind()) {
     case MethodRecognizer::kFloat32x4Sqrt:
       __ sqrtps(left);
       break;
     case MethodRecognizer::kFloat32x4Reciprocal:
       __ reciprocalps(left);
       break;
     case MethodRecognizer::kFloat32x4ReciprocalSqrt:
       __ rsqrtps(left);
       break;
     default: UNREACHABLE();
   }
 }
 
 
-LocationSummary* Float32x4ZeroArgInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float32x4ZeroArgInstr::MakeLocationSummary(Isolate* isolate,
+                                                            bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float32x4ZeroArgInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister left = locs()->in(0).fpu_reg();
 
   ASSERT(locs()->out(0).fpu_reg() == left);
   switch (op_kind()) {
     case MethodRecognizer::kFloat32x4Negate:
       __ negateps(left);
       break;
     case MethodRecognizer::kFloat32x4Absolute:
       __ absps(left);
       break;
     default: UNREACHABLE();
   }
 }
 
 
-LocationSummary* Float32x4ClampInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float32x4ClampInstr::MakeLocationSummary(Isolate* isolate,
+                                                          bool opt) const {
   const intptr_t kNumInputs = 3;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_in(2, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float32x4ClampInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister left = locs()->in(0).fpu_reg();
   XmmRegister lower = locs()->in(1).fpu_reg();
   XmmRegister upper = locs()->in(2).fpu_reg();
   ASSERT(locs()->out(0).fpu_reg() == left);
   __ minps(left, upper);
   __ maxps(left, lower);
 }
 
 
-LocationSummary* Float32x4WithInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float32x4WithInstr::MakeLocationSummary(Isolate* isolate,
+                                                         bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float32x4WithInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister replacement = locs()->in(0).fpu_reg();
   XmmRegister value = locs()->in(1).fpu_reg();
@@ skipping 43 matching lines @@
       __ movss(Address(ESP, 12), replacement);
       // Move updated value into output register.
       __ movups(replacement, Address(ESP, 0));
       __ addl(ESP, Immediate(16));
       break;
     default: UNREACHABLE();
   }
 }
 
 
-LocationSummary* Float32x4ToInt32x4Instr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float32x4ToInt32x4Instr::MakeLocationSummary(Isolate* isolate,
+                                                              bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float32x4ToInt32x4Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
   // NOP.
 }
 
 
-LocationSummary* Simd64x2ShuffleInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Simd64x2ShuffleInstr::MakeLocationSummary(Isolate* isolate,
+                                                           bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Simd64x2ShuffleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister value = locs()->in(0).fpu_reg();
 
   ASSERT(locs()->out(0).fpu_reg() == value);
 
   switch (op_kind()) {
     case MethodRecognizer::kFloat64x2GetX:
       // nop.
       break;
     case MethodRecognizer::kFloat64x2GetY:
       __ shufpd(value, value, Immediate(0x33));
       break;
     default: UNREACHABLE();
   }
 }
 
 
 
-LocationSummary* Float64x2ZeroInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float64x2ZeroInstr::MakeLocationSummary(Isolate* isolate,
+                                                         bool opt) const {
   const intptr_t kNumInputs = 0;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_out(0, Location::RequiresFpuRegister());
   return summary;
 }
 
 
 void Float64x2ZeroInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister value = locs()->out(0).fpu_reg();
   __ xorpd(value, value);
 }
 
 
-LocationSummary* Float64x2SplatInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float64x2SplatInstr::MakeLocationSummary(Isolate* isolate,
+                                                          bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float64x2SplatInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister value = locs()->out(0).fpu_reg();
   __ shufpd(value, value, Immediate(0x0));
 }
 
 
 LocationSummary* Float64x2ConstructorInstr::MakeLocationSummary(
-    bool opt) const {
+    Isolate* isolate, bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float64x2ConstructorInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister v0 = locs()->in(0).fpu_reg();
   XmmRegister v1 = locs()->in(1).fpu_reg();
   ASSERT(v0 == locs()->out(0).fpu_reg());
   __ subl(ESP, Immediate(16));
   __ movsd(Address(ESP, 0), v0);
   __ movsd(Address(ESP, 8), v1);
   __ movups(v0, Address(ESP, 0));
   __ addl(ESP, Immediate(16));
 }
 
 
 LocationSummary* Float64x2ToFloat32x4Instr::MakeLocationSummary(
-    bool opt) const {
+    Isolate* isolate, bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float64x2ToFloat32x4Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister value = locs()->out(0).fpu_reg();
   __ cvtpd2ps(value, value);
 }
 
 
 LocationSummary* Float32x4ToFloat64x2Instr::MakeLocationSummary(
-    bool opt) const {
+    Isolate* isolate, bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float32x4ToFloat64x2Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister value = locs()->out(0).fpu_reg();
   __ cvtps2pd(value, value);
 }
 
 
-LocationSummary* Float64x2ZeroArgInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float64x2ZeroArgInstr::MakeLocationSummary(Isolate* isolate,
+                                                            bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   if (representation() == kTagged) {
     ASSERT(op_kind() == MethodRecognizer::kFloat64x2GetSignMask);
     summary->set_out(0, Location::RequiresRegister());
   } else {
     ASSERT(representation() == kUnboxedFloat64x2);
     summary->set_out(0, Location::SameAsFirstInput());
   }
   return summary;
 }
@@ skipping 17 matching lines @@
       break;
     case MethodRecognizer::kFloat64x2GetSignMask:
       __ movmskpd(locs()->out(0).reg(), left);
       __ SmiTag(locs()->out(0).reg());
       break;
     default: UNREACHABLE();
   }
 }
 
 
-LocationSummary* Float64x2OneArgInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Float64x2OneArgInstr::MakeLocationSummary(Isolate* isolate,
+                                                           bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Float64x2OneArgInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister left = locs()->in(0).fpu_reg();
   XmmRegister right = locs()->in(1).fpu_reg();
@@ skipping 29 matching lines @@
       break;
     case MethodRecognizer::kFloat64x2Max:
       __ maxpd(left, right);
       break;
     default: UNREACHABLE();
   }
 }
 
 
 LocationSummary* Int32x4BoolConstructorInstr::MakeLocationSummary(
-    bool opt) const {
+    Isolate* isolate, bool opt) const {
   const intptr_t kNumInputs = 4;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresRegister());
   summary->set_in(1, Location::RequiresRegister());
   summary->set_in(2, Location::RequiresRegister());
   summary->set_in(3, Location::RequiresRegister());
   summary->set_out(0, Location::RequiresFpuRegister());
   return summary;
 }
 
 
 void Int32x4BoolConstructorInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
@@ skipping 37 matching lines @@
   __ jmp(&w_done);
   __ Bind(&w_false);
   __ movl(Address(ESP, 12), Immediate(0x0));
   __ Bind(&w_done);
 
   __ movups(result, Address(ESP, 0));
   __ addl(ESP, Immediate(16));
 }
 
 
-LocationSummary* Int32x4GetFlagInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Int32x4GetFlagInstr::MakeLocationSummary(Isolate* isolate,
+                                                          bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::RequiresRegister());
   return summary;
 }
 
 
 void Int32x4GetFlagInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister value = locs()->in(0).fpu_reg();
   Register result = locs()->out(0).reg();
   Label done;
@@ skipping 20 matching lines @@
   __ testl(result, result);
   __ j(NOT_ZERO, &non_zero, Assembler::kNearJump);
   __ LoadObject(result, Bool::False());
   __ jmp(&done);
   __ Bind(&non_zero);
   __ LoadObject(result, Bool::True());
   __ Bind(&done);
 }
 
 
-LocationSummary* Int32x4SelectInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Int32x4SelectInstr::MakeLocationSummary(Isolate* isolate,
+                                                         bool opt) const {
   const intptr_t kNumInputs = 3;
   const intptr_t kNumTemps = 1;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_in(2, Location::RequiresFpuRegister());
   summary->set_temp(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Int32x4SelectInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister mask = locs()->in(0).fpu_reg();
   XmmRegister trueValue = locs()->in(1).fpu_reg();
   XmmRegister falseValue = locs()->in(2).fpu_reg();
   XmmRegister out = locs()->out(0).fpu_reg();
   XmmRegister temp = locs()->temp(0).fpu_reg();
   ASSERT(out == mask);
   // Copy mask.
   __ movaps(temp, mask);
   // Invert it.
   __ notps(temp);
   // mask = mask & trueValue.
   __ andps(mask, trueValue);
   // temp = temp & falseValue.
   __ andps(temp, falseValue);
   // out = mask | temp.
   __ orps(mask, temp);
 }
 
 
-LocationSummary* Int32x4SetFlagInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* Int32x4SetFlagInstr::MakeLocationSummary(Isolate* isolate,
+                                                          bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Int32x4SetFlagInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister mask = locs()->in(0).fpu_reg();
   Register flag = locs()->in(1).reg();
@@ skipping 31 matching lines @@
     break;
     default: UNREACHABLE();
   }
   __ Bind(&exitPath);
   // Copy mask back to register.
   __ movups(mask, Address(ESP, 0));
   __ addl(ESP, Immediate(16));
 }
 
 
-LocationSummary* Int32x4ToFloat32x4Instr::MakeLocationSummary(bool opt) const {
+LocationSummary* Int32x4ToFloat32x4Instr::MakeLocationSummary(Isolate* isolate,
+                                                              bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void Int32x4ToFloat32x4Instr::EmitNativeCode(FlowGraphCompiler* compiler) {
   // NOP.
 }
 
 
-LocationSummary* BinaryInt32x4OpInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* BinaryInt32x4OpInstr::MakeLocationSummary(Isolate* isolate,
+                                                           bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_in(1, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void BinaryInt32x4OpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister left = locs()->in(0).fpu_reg();
   XmmRegister right = locs()->in(1).fpu_reg();
@@ skipping 15 matching lines @@
       __ addpl(left, right);
       break;
     case Token::kSUB:
       __ subpl(left, right);
       break;
     default: UNREACHABLE();
   }
 }
 
 
-LocationSummary* MathUnaryInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* MathUnaryInstr::MakeLocationSummary(Isolate* isolate,
+                                                     bool opt) const {
   if ((kind() == MathUnaryInstr::kSin) || (kind() == MathUnaryInstr::kCos)) {
     const intptr_t kNumInputs = 1;
     const intptr_t kNumTemps = 1;
     LocationSummary* summary =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);
     summary->set_in(0, Location::FpuRegisterLocation(XMM1));
     // EDI is chosen because it is callee saved so we do not need to back it
     // up before calling into the runtime.
     summary->set_temp(0, Location::RegisterLocation(EDI));
     summary->set_out(0, Location::FpuRegisterLocation(XMM1));
     return summary;
   }
   ASSERT((kind() == MathUnaryInstr::kSqrt) ||
          (kind() == MathUnaryInstr::kDoubleSquare));
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   if (kind() == MathUnaryInstr::kDoubleSquare) {
     summary->set_out(0, Location::SameAsFirstInput());
   } else {
     summary->set_out(0, Location::RequiresFpuRegister());
   }
   return summary;
 }
 
 
@@ skipping 13 matching lines @@
     __ movsd(Address(ESP, 0), locs()->in(0).fpu_reg());
     __ CallRuntime(TargetFunction(), InputCount());
     __ fstpl(Address(ESP, 0));
     __ movsd(locs()->out(0).fpu_reg(), Address(ESP, 0));
     // Restore ESP.
     __ movl(ESP, locs()->temp(0).reg());
   }
 }
 
 
-LocationSummary* MathMinMaxInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* MathMinMaxInstr::MakeLocationSummary(Isolate* isolate,
+                                                      bool opt) const {
   if (result_cid() == kDoubleCid) {
     const intptr_t kNumInputs = 2;
     const intptr_t kNumTemps = 1;
     LocationSummary* summary =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
     summary->set_in(0, Location::RequiresFpuRegister());
     summary->set_in(1, Location::RequiresFpuRegister());
     // Reuse the left register so that code can be made shorter.
     summary->set_out(0, Location::SameAsFirstInput());
     summary->set_temp(0, Location::RequiresRegister());
     return summary;
   }
 
   ASSERT(result_cid() == kSmiCid);
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresRegister());
   summary->set_in(1, Location::RequiresRegister());
   // Reuse the left register so that code can be made shorter.
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void MathMinMaxInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   ASSERT((op_kind() == MethodRecognizer::kMathMin) ||
@@ skipping 49 matching lines @@
   __ cmpl(left, right);
   ASSERT(result == left);
   if (is_min) {
     __ cmovgel(result, right);
   } else {
     __ cmovlessl(result, right);
   }
 }
 
 
-LocationSummary* UnarySmiOpInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* UnarySmiOpInstr::MakeLocationSummary(Isolate* isolate,
+                                                      bool opt) const {
   const intptr_t kNumInputs = 1;
   return LocationSummary::Make(kNumInputs,
                                Location::SameAsFirstInput(),
                                LocationSummary::kNoCall);
 }
 
 
 void UnarySmiOpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register value = locs()->in(0).reg();
   ASSERT(value == locs()->out(0).reg());
   switch (op_kind()) {
     case Token::kNEGATE: {
       Label* deopt = compiler->AddDeoptStub(deopt_id(), ICData::kDeoptUnaryOp);
       __ negl(value);
       __ j(OVERFLOW, deopt);
       break;
     }
     case Token::kBIT_NOT:
       __ notl(value);
       __ andl(value, Immediate(~kSmiTagMask));  // Remove inverted smi-tag.
       break;
     default:
       UNREACHABLE();
   }
 }
 
 
-LocationSummary* UnaryDoubleOpInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* UnaryDoubleOpInstr::MakeLocationSummary(Isolate* isolate,
+                                                         bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresFpuRegister());
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void UnaryDoubleOpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister value = locs()->in(0).fpu_reg();
   ASSERT(locs()->out(0).fpu_reg() == value);
   __ DoubleNegate(value);
 }
 
 
-LocationSummary* SmiToDoubleInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* SmiToDoubleInstr::MakeLocationSummary(Isolate* isolate,
+                                                       bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* result =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   result->set_in(0, Location::WritableRegister());
   result->set_out(0, Location::RequiresFpuRegister());
   return result;
 }
 
 
 void SmiToDoubleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register value = locs()->in(0).reg();
   FpuRegister result = locs()->out(0).fpu_reg();
   __ SmiUntag(value);
   __ cvtsi2sd(result, value);
 }
 
 
-LocationSummary* DoubleToIntegerInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* DoubleToIntegerInstr::MakeLocationSummary(Isolate* isolate,
+                                                           bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* result =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);
   result->set_in(0, Location::RegisterLocation(ECX));
   result->set_out(0, Location::RegisterLocation(EAX));
   return result;
 }
 
 
 void DoubleToIntegerInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register result = locs()->out(0).reg();
   Register value_obj = locs()->in(0).reg();
   XmmRegister value_double = XMM0;
@@ skipping 19 matching lines @@
   compiler->GenerateStaticCall(deopt_id(),
                                instance_call()->token_pos(),
                                target,
                                kNumberOfArguments,
                                Object::null_array(),  // No argument names.,
                                locs());
   __ Bind(&done);
 }
 
 
-LocationSummary* DoubleToSmiInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* DoubleToSmiInstr::MakeLocationSummary(Isolate* isolate,
+                                                       bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
-  LocationSummary* result = new LocationSummary(
+  LocationSummary* result = new (isolate) LocationSummary(isolate, 
       kNumInputs, kNumTemps, LocationSummary::kNoCall);
   result->set_in(0, Location::RequiresFpuRegister());
   result->set_out(0, Location::RequiresRegister());
   return result;
 }
 
 
 void DoubleToSmiInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Label* deopt = compiler->AddDeoptStub(deopt_id(), ICData::kDeoptDoubleToSmi);
   Register result = locs()->out(0).reg();
   XmmRegister value = locs()->in(0).fpu_reg();
   __ cvttsd2si(result, value);
   // Check for overflow and that it fits into Smi.
   __ cmpl(result, Immediate(0xC0000000));
   __ j(NEGATIVE, deopt);
   __ SmiTag(result);
 }
 
 
-LocationSummary* DoubleToDoubleInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* DoubleToDoubleInstr::MakeLocationSummary(Isolate* isolate,
+                                                          bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* result =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   result->set_in(0, Location::RequiresFpuRegister());
   result->set_out(0, Location::RequiresFpuRegister());
   return result;
 }
 
 
 void DoubleToDoubleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister value = locs()->in(0).fpu_reg();
   XmmRegister result = locs()->out(0).fpu_reg();
   switch (recognized_kind()) {
     case MethodRecognizer::kDoubleTruncate:
       __ roundsd(result, value,  Assembler::kRoundToZero);
       break;
     case MethodRecognizer::kDoubleFloor:
       __ roundsd(result, value,  Assembler::kRoundDown);
       break;
     case MethodRecognizer::kDoubleCeil:
       __ roundsd(result, value,  Assembler::kRoundUp);
       break;
     default:
       UNREACHABLE();
   }
 }
 
 
-LocationSummary* DoubleToFloatInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* DoubleToFloatInstr::MakeLocationSummary(Isolate* isolate,
+                                                         bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* result =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   result->set_in(0, Location::RequiresFpuRegister());
   result->set_out(0, Location::SameAsFirstInput());
   return result;
 }
 
 
 void DoubleToFloatInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   __ cvtsd2ss(locs()->out(0).fpu_reg(), locs()->in(0).fpu_reg());
 }
 
 
-LocationSummary* FloatToDoubleInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* FloatToDoubleInstr::MakeLocationSummary(Isolate* isolate,
+                                                         bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* result =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   result->set_in(0, Location::RequiresFpuRegister());
   result->set_out(0, Location::SameAsFirstInput());
   return result;
 }
 
 
 void FloatToDoubleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   __ cvtss2sd(locs()->out(0).fpu_reg(), locs()->in(0).fpu_reg());
 }
 
 
-LocationSummary* InvokeMathCFunctionInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* InvokeMathCFunctionInstr::MakeLocationSummary(Isolate* isolate,
+                                                               bool opt) const {
   ASSERT((InputCount() == 1) || (InputCount() == 2));
   const intptr_t kNumTemps = 1;
   LocationSummary* result =
-      new LocationSummary(InputCount(), kNumTemps, LocationSummary::kCall);
+      new (isolate) LocationSummary(isolate, InputCount(), kNumTemps, LocationSummary::kCall);
   // EDI is chosen because it is callee saved so we do not need to back it
   // up before calling into the runtime.
   result->set_temp(0, Location::RegisterLocation(EDI));
   result->set_in(0, Location::FpuRegisterLocation(XMM1));
   if (InputCount() == 2) {
     result->set_in(1, Location::FpuRegisterLocation(XMM2));
   }
   if (recognized_kind() == MethodRecognizer::kMathDoublePow) {
     // Temp index 1.
     result->AddTemp(Location::RegisterLocation(EAX));
@@ skipping 151 matching lines @@
   }
 
   __ CallRuntime(TargetFunction(), InputCount());
   __ fstpl(Address(ESP, 0));
   __ movsd(locs()->out(0).fpu_reg(), Address(ESP, 0));
   // Restore ESP.
   __ movl(ESP, locs()->temp(kSavedSpTempIndex).reg());
 }
 
 
-LocationSummary* ExtractNthOutputInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* ExtractNthOutputInstr::MakeLocationSummary(Isolate* isolate,
+                                                            bool opt) const {
   // Only use this instruction in optimized code.
   ASSERT(opt);
   const intptr_t kNumInputs = 1;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, 0, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, 0, LocationSummary::kNoCall);
   if (representation() == kUnboxedDouble) {
     if (index() == 0) {
       summary->set_in(0, Location::Pair(Location::RequiresFpuRegister(),
                                         Location::Any()));
     } else {
       ASSERT(index() == 1);
       summary->set_in(0, Location::Pair(Location::Any(),
                                         Location::RequiresFpuRegister()));
     }
     summary->set_out(0, Location::RequiresFpuRegister());
@@ skipping 23 matching lines @@
     __ movaps(out, in);
   } else {
     ASSERT(representation() == kTagged);
     Register out = locs()->out(0).reg();
     Register in = in_loc.reg();
     __ movl(out, in);
   }
 }
 
 
-LocationSummary* MergedMathInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* MergedMathInstr::MakeLocationSummary(Isolate* isolate,
+                                                      bool opt) const {
   if (kind() == MergedMathInstr::kTruncDivMod) {
     const intptr_t kNumInputs = 2;
     const intptr_t kNumTemps = 0;
     LocationSummary* summary =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
     // Both inputs must be writable because they will be untagged.
     summary->set_in(0, Location::RegisterLocation(EAX));
     summary->set_in(1, Location::WritableRegister());
     // Output is a pair of registers.
     summary->set_out(0, Location::Pair(Location::RegisterLocation(EAX),
                                        Location::RegisterLocation(EDX)));
     return summary;
   }
   if (kind() == MergedMathInstr::kSinCos) {
     const intptr_t kNumInputs = 1;
     const intptr_t kNumTemps = 0;
     LocationSummary* summary =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
     summary->set_in(0, Location::RequiresFpuRegister());
     summary->set_out(0, Location::Pair(Location::RequiresFpuRegister(),
                                        Location::RequiresFpuRegister()));
     return summary;
   }
   UNIMPLEMENTED();
   return NULL;
 }
 
 
@@ skipping 93 matching lines @@
     __ movsd(out2, Address(ESP, 0));
     __ addl(ESP, Immediate(2 * kWordSize));
     return;
   }
 
   UNIMPLEMENTED();
 }
 
 
 LocationSummary* PolymorphicInstanceCallInstr::MakeLocationSummary(
-    bool opt) const {
+    Isolate* isolate, bool opt) const {
   return MakeCallSummary();
 }
 
 
 void PolymorphicInstanceCallInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Label* deopt = compiler->AddDeoptStub(
       deopt_id(), ICData::kDeoptPolymorphicInstanceCallTestFail);
   if (ic_data().NumberOfChecks() == 0) {
     __ jmp(deopt);
     return;
@@ skipping 22 matching lines @@
                             EDI,  // Class id register.
                             instance_call()->ArgumentCount(),
                             instance_call()->argument_names(),
                             deopt,
                             deopt_id(),
                             instance_call()->token_pos(),
                             locs());
 }
 
 
-LocationSummary* BranchInstr::MakeLocationSummary(bool opt) const {
-  comparison()->InitializeLocationSummary(opt);
+LocationSummary* BranchInstr::MakeLocationSummary(Isolate* isolate,
+                                                  bool opt) const {
+  comparison()->InitializeLocationSummary(isolate, opt);
   // Branches don't produce a result.
   comparison()->locs()->set_out(0, Location::NoLocation());
   return comparison()->locs();
 }
 
 
 void BranchInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   comparison()->EmitBranchCode(compiler, this);
 }
 
 
-LocationSummary* CheckClassInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* CheckClassInstr::MakeLocationSummary(Isolate* isolate,
+                                                      bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresRegister());
   if (!IsNullCheck()) {
     summary->AddTemp(Location::RequiresRegister());
   }
   return summary;
 }
 
 
 void CheckClassInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   const ICData::DeoptReasonId deopt_reason = licm_hoisted_ ?
@@ skipping 35 matching lines @@
         __ j(EQUAL, &is_ok, Assembler::kNearJump);
       } else {
         __ j(EQUAL, &is_ok);
       }
     }
   }
   __ Bind(&is_ok);
 }
 
 
-LocationSummary* CheckSmiInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* CheckSmiInstr::MakeLocationSummary(Isolate* isolate,
+                                                    bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresRegister());
   return summary;
 }
 
 
 void CheckSmiInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register value = locs()->in(0).reg();
   Label* deopt = compiler->AddDeoptStub(deopt_id(), ICData::kDeoptCheckSmi);
   __ testl(value, Immediate(kSmiTagMask));
   __ j(NOT_ZERO, deopt);
 }
 
 
 // Length: register or constant.
 // Index: register, constant or stack slot.
-LocationSummary* CheckArrayBoundInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* CheckArrayBoundInstr::MakeLocationSummary(Isolate* isolate,
+                                                           bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   locs->set_in(kLengthPos, Location::RegisterOrSmiConstant(length()));
   ConstantInstr* index_constant = index()->definition()->AsConstant();
   if (index_constant != NULL) {
     locs->set_in(kIndexPos, Location::RegisterOrSmiConstant(index()));
   } else {
     locs->set_in(kIndexPos, Location::PrefersRegister());
   }
   return locs;
 }
 
@@ skipping 37 matching lines @@
     __ j(BELOW_EQUAL, deopt);
   } else {
     Register length = length_loc.reg();
     Register index = index_loc.reg();
     __ cmpl(index, length);
     __ j(ABOVE_EQUAL, deopt);
   }
 }
 
 
-LocationSummary* UnboxIntegerInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* UnboxIntegerInstr::MakeLocationSummary(Isolate* isolate,
+                                                        bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresRegister());
   summary->set_out(0, Location::Pair(Location::RegisterLocation(EAX),
                                      Location::RegisterLocation(EDX)));
   return summary;
 }
 
 
 void UnboxIntegerInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   const intptr_t value_cid = value()->Type()->ToCid();
   const Register value = locs()->in(0).reg();
@@ skipping 28 matching lines @@
     __ Bind(&is_smi);
     __ movl(result_lo, value);
     __ SmiUntag(result_lo);
     // Sign extend into result_hi.
     __ cdq();
     __ Bind(&done);
   }
 }
 
 
-LocationSummary* BoxIntegerInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* BoxIntegerInstr::MakeLocationSummary(Isolate* isolate,
+                                                      bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 1;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs,
+      new (isolate) LocationSummary(isolate, kNumInputs,
                           kNumTemps,
                           LocationSummary::kCallOnSlowPath);
   summary->set_in(0, Location::Pair(Location::RequiresRegister(),
                                     Location::RequiresRegister()));
   summary->set_temp(0, Location::RequiresRegister());
   summary->set_out(0, Location::RequiresRegister());
   return summary;
 }
 
 
@@ skipping 68 matching lines @@
       kNoRegister);
   __ Bind(slow_path->exit_label());
   // 3. Restore lower half of input before using it.
   __ subl(value_lo, Immediate(0x40000000));
   __ movl(FieldAddress(out_reg, Mint::value_offset()), value_lo);
   __ movl(FieldAddress(out_reg, Mint::value_offset() + kWordSize), value_hi);
   __ Bind(&done);
 }
 
 
-LocationSummary* BinaryMintOpInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* BinaryMintOpInstr::MakeLocationSummary(Isolate* isolate,
+                                                        bool opt) const {
   const intptr_t kNumInputs = 2;
   switch (op_kind()) {
     case Token::kBIT_AND:
     case Token::kBIT_OR:
     case Token::kBIT_XOR: {
       const intptr_t kNumTemps = 0;
       LocationSummary* summary =
-          new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+          new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
       summary->set_in(0, Location::Pair(Location::RequiresRegister(),
                                         Location::RequiresRegister()));
       summary->set_in(1, Location::Pair(Location::RequiresRegister(),
                                         Location::RequiresRegister()));
       summary->set_out(0, Location::SameAsFirstInput());
       return summary;
     }
     case Token::kADD:
     case Token::kSUB: {
       const intptr_t kNumTemps = 0;
       LocationSummary* summary =
-          new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+          new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
       summary->set_in(0, Location::Pair(Location::RequiresRegister(),
                                         Location::RequiresRegister()));
       summary->set_in(1, Location::Pair(Location::RequiresRegister(),
                                         Location::RequiresRegister()));
       summary->set_out(0, Location::SameAsFirstInput());
       return summary;
     }
     default:
       UNREACHABLE();
       return NULL;
@@ skipping 47 matching lines @@
       break;
     }
     default: UNREACHABLE();
   }
   if (FLAG_throw_on_javascript_int_overflow) {
     EmitJavascriptIntOverflowCheck(compiler, deopt, left_lo, left_hi);
   }
 }
 
 
-LocationSummary* ShiftMintOpInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* ShiftMintOpInstr::MakeLocationSummary(Isolate* isolate,
+                                                       bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = op_kind() == Token::kSHL ? 2 : 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::Pair(Location::RequiresRegister(),
                                     Location::RequiresRegister()));
   summary->set_in(1, Location::RegisterLocation(ECX));
   if (op_kind() == Token::kSHL) {
     summary->set_temp(0, Location::RequiresRegister());
     summary->set_temp(1, Location::RequiresRegister());
   }
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
@@ skipping 47 matching lines @@
       UNREACHABLE();
       break;
   }
   __ Bind(&done);
   if (FLAG_throw_on_javascript_int_overflow) {
     EmitJavascriptIntOverflowCheck(compiler, deopt, left_lo, left_hi);
   }
 }
 
 
-LocationSummary* UnaryMintOpInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* UnaryMintOpInstr::MakeLocationSummary(Isolate* isolate,
+                                                       bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, Location::Pair(Location::RequiresRegister(),
                                     Location::RequiresRegister()));
   summary->set_out(0, Location::SameAsFirstInput());
   if (FLAG_throw_on_javascript_int_overflow) {
     summary->set_temp(0, Location::RequiresRegister());
   }
   return summary;
 }
 
 
@@ skipping 15 matching lines @@
 
   __ notl(left_lo);
   __ notl(left_hi);
 
   if (FLAG_throw_on_javascript_int_overflow) {
     EmitJavascriptIntOverflowCheck(compiler, deopt, left_lo, left_hi);
   }
 }
 
 
-LocationSummary* ThrowInstr::MakeLocationSummary(bool opt) const {
-  return new LocationSummary(0, 0, LocationSummary::kCall);
+LocationSummary* ThrowInstr::MakeLocationSummary(Isolate* isolate,
+                                                 bool opt) const {
+  return new (isolate) LocationSummary(isolate, 0, 0, LocationSummary::kCall);
 }
 
 
 
 void ThrowInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   compiler->GenerateRuntimeCall(token_pos(),
                                 deopt_id(),
                                 kThrowRuntimeEntry,
                                 1,
                                 locs());
   __ int3();
 }
 
 
-LocationSummary* ReThrowInstr::MakeLocationSummary(bool opt) const {
-  return new LocationSummary(0, 0, LocationSummary::kCall);
+LocationSummary* ReThrowInstr::MakeLocationSummary(Isolate* isolate,
+                                                   bool opt) const {
+  return new (isolate) LocationSummary(isolate, 0, 0, LocationSummary::kCall);
 }
 
 
 void ReThrowInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   compiler->SetNeedsStacktrace(catch_try_index());
   compiler->GenerateRuntimeCall(token_pos(),
                                 deopt_id(),
                                 kReThrowRuntimeEntry,
                                 2,
                                 locs());
@@ skipping 18 matching lines @@
     compiler->AddCurrentDescriptor(PcDescriptors::kDeopt,
                                    deopt_id_,
                                    Scanner::kNoSourcePos);
   }
   if (HasParallelMove()) {
     compiler->parallel_move_resolver()->EmitNativeCode(parallel_move());
   }
 }
 
 
-LocationSummary* GotoInstr::MakeLocationSummary(bool opt) const {
-  return new LocationSummary(0, 0, LocationSummary::kNoCall);
+LocationSummary* GotoInstr::MakeLocationSummary(Isolate* isolate,
+                                                bool opt) const {
+  return new (isolate) LocationSummary(isolate, 0, 0, LocationSummary::kNoCall);
 }
 
 
 void GotoInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   if (!compiler->is_optimizing()) {
     compiler->EmitEdgeCounter();
     // Add a deoptimization descriptor for deoptimizing instructions that
     // may be inserted before this instruction.  This descriptor points
     // after the edge counter for uniformity with ARM and MIPS, where we can
     // reuse pattern matching that matches backwards from the end of the
     // pattern.
     compiler->AddCurrentDescriptor(PcDescriptors::kDeopt,
                                    GetDeoptId(),
                                    Scanner::kNoSourcePos);
   }
   if (HasParallelMove()) {
     compiler->parallel_move_resolver()->EmitNativeCode(parallel_move());
   }
 
   // We can fall through if the successor is the next block in the list.
   // Otherwise, we need a jump.
   if (!compiler->CanFallThroughTo(successor())) {
     __ jmp(compiler->GetJumpLabel(successor()));
   }
 }
 
 
-LocationSummary* CurrentContextInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* CurrentContextInstr::MakeLocationSummary(Isolate* isolate,
+                                                          bool opt) const {
   return LocationSummary::Make(0,
                                Location::RequiresRegister(),
                                LocationSummary::kNoCall);
 }
 
 
 void CurrentContextInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   __ MoveRegister(locs()->out(0).reg(), CTX);
 }
 
 
-LocationSummary* StrictCompareInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* StrictCompareInstr::MakeLocationSummary(Isolate* isolate,
+                                                         bool opt) const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   if (needs_number_check()) {
     LocationSummary* locs =
-        new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+        new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);
     locs->set_in(0, Location::RegisterLocation(EAX));
     locs->set_in(1, Location::RegisterLocation(ECX));
     locs->set_out(0, Location::RegisterLocation(EAX));
     return locs;
   }
   LocationSummary* locs =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
   locs->set_in(0, Location::RegisterOrConstant(left()));
   // Only one of the inputs can be a constant. Choose register if the first one
   // is a constant.
   locs->set_in(1, locs->in(0).IsConstant()
                       ? Location::RequiresRegister()
                       : Location::RegisterOrConstant(right()));
   locs->set_out(0, Location::RequiresRegister());
   return locs;
 }
 
@@ skipping 53 matching lines @@
 }
 
 
 // Detect pattern when one value is zero and another is a power of 2.
 static bool IsPowerOfTwoKind(intptr_t v1, intptr_t v2) {
   return (Utils::IsPowerOfTwo(v1) && (v2 == 0)) ||
          (Utils::IsPowerOfTwo(v2) && (v1 == 0));
 }
 
 
-LocationSummary* IfThenElseInstr::MakeLocationSummary(bool opt) const {
-  comparison()->InitializeLocationSummary(opt);
+LocationSummary* IfThenElseInstr::MakeLocationSummary(Isolate* isolate,
+                                                      bool opt) const {
+  comparison()->InitializeLocationSummary(isolate, opt);
   // TODO(vegorov): support byte register constraints in the register allocator.
   comparison()->locs()->set_out(0, Location::RegisterLocation(EDX));
   return comparison()->locs();
 }
 
 
 void IfThenElseInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   ASSERT(locs()->out(0).reg() == EDX);
 
   // Clear upper part of the out register. We are going to use setcc on it
@@ skipping 35 matching lines @@
     __ decl(EDX);
     __ andl(EDX, Immediate(
         Smi::RawValue(true_value) - Smi::RawValue(false_value)));
     if (false_value != 0) {
       __ addl(EDX, Immediate(Smi::RawValue(false_value)));
     }
   }
 }
 
 
-LocationSummary* ClosureCallInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* ClosureCallInstr::MakeLocationSummary(Isolate* isolate,
+                                                       bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;
   LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+      new (isolate) LocationSummary(isolate, kNumInputs, kNumTemps, LocationSummary::kCall);
   summary->set_in(0, Location::RegisterLocation(EAX));  // Function.
   summary->set_out(0, Location::RegisterLocation(EAX));
   return summary;
 }
 
 
 void ClosureCallInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   // Load arguments descriptors.
   intptr_t argument_count = ArgumentCount();
   const Array& arguments_descriptor =
@@ skipping 25 matching lines @@
     // Add deoptimization continuation point after the call and before the
     // arguments are removed.
     compiler->AddCurrentDescriptor(PcDescriptors::kDeopt,
                                    deopt_id_after,
                                    token_pos());
   }
   __ Drop(argument_count);
 }
 
 
-LocationSummary* BooleanNegateInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* BooleanNegateInstr::MakeLocationSummary(Isolate* isolate,
+                                                         bool opt) const {
   return LocationSummary::Make(1,
                                Location::RequiresRegister(),
                                LocationSummary::kNoCall);
 }
 
 
 void BooleanNegateInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register value = locs()->in(0).reg();
   Register result = locs()->out(0).reg();
 
   Label done;
   __ LoadObject(result, Bool::True());
   __ CompareRegisters(result, value);
   __ j(NOT_EQUAL, &done, Assembler::kNearJump);
   __ LoadObject(result, Bool::False());
   __ Bind(&done);
 }
 
 
-LocationSummary* AllocateObjectInstr::MakeLocationSummary(bool opt) const {
+LocationSummary* AllocateObjectInstr::MakeLocationSummary(Isolate* isolate,
+                                                          bool opt) const {
   return MakeCallSummary();
 }
 
 
 void AllocateObjectInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   const Code& stub = Code::Handle(StubCode::GetAllocationStubForClass(cls()));
   const ExternalLabel label(cls().ToCString(), stub.EntryPoint());
   compiler->GenerateCall(token_pos(),
                          &label,
                          PcDescriptors::kOther,
                          locs());
   __ Drop(ArgumentCount());  // Discard arguments.
 }
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_IA32