diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 8110f16551..7d413b9f62 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -909,7 +909,7 @@ void LCodeGen::DoUnknownOSRValue(LUnknownOSRValue* instr) {
 
 void LCodeGen::DoModI(LModI* instr) {
   if (instr->hydrogen()->HasPowerOf2Divisor()) {
-    Register dividend = ToRegister(instr->InputAt(0));
+    Register dividend = ToRegister(instr->left());
 
     int32_t divisor =
         HConstant::cast(instr->hydrogen()->right())->Integer32Value();
@@ -933,8 +933,8 @@ void LCodeGen::DoModI(LModI* instr) {
     __ bind(&done);
   } else {
     Label done, remainder_eq_dividend, slow, do_subtraction, both_positive;
-    Register left_reg = ToRegister(instr->InputAt(0));
-    Register right_reg = ToRegister(instr->InputAt(1));
+    Register left_reg = ToRegister(instr->left());
+    Register right_reg = ToRegister(instr->right());
     Register result_reg = ToRegister(instr->result());
 
     ASSERT(left_reg.is(eax));
@@ -964,7 +964,7 @@ void LCodeGen::DoModI(LModI* instr) {
     __ j(less, &remainder_eq_dividend, Label::kNear);
 
     // Check if the divisor is a PowerOfTwo integer.
-    Register scratch = ToRegister(instr->TempAt(0));
+    Register scratch = ToRegister(instr->temp());
     __ mov(scratch, right_reg);
     __ sub(Operand(scratch), Immediate(1));
     __ test(scratch, Operand(right_reg));
@@ -1020,11 +1020,11 @@ void LCodeGen::DoModI(LModI* instr) {
 
 
 void LCodeGen::DoDivI(LDivI* instr) {
-  LOperand* right = instr->InputAt(1);
+  LOperand* right = instr->right();
   ASSERT(ToRegister(instr->result()).is(eax));
-  ASSERT(ToRegister(instr->InputAt(0)).is(eax));
-  ASSERT(!ToRegister(instr->InputAt(1)).is(eax));
-  ASSERT(!ToRegister(instr->InputAt(1)).is(edx));
+  ASSERT(ToRegister(instr->left()).is(eax));
+  ASSERT(!ToRegister(instr->right()).is(eax));
+  ASSERT(!ToRegister(instr->right()).is(edx));
 
   Register left_reg = eax;
 
@@ -1066,10 +1066,10 @@ void LCodeGen::DoDivI(LDivI* instr) {
 
 
 void LCodeGen::DoMathFloorOfDiv(LMathFloorOfDiv* instr) {
-  ASSERT(instr->InputAt(1)->IsConstantOperand());
+  ASSERT(instr->right()->IsConstantOperand());
 
-  Register dividend = ToRegister(instr->InputAt(0));
-  int32_t divisor = ToInteger32(LConstantOperand::cast(instr->InputAt(1)));
+  Register dividend = ToRegister(instr->left());
+  int32_t divisor = ToInteger32(LConstantOperand::cast(instr->right()));
   Register result = ToRegister(instr->result());
 
   switch (divisor) {
@@ -1115,9 +1115,9 @@ void LCodeGen::DoMathFloorOfDiv(LMathFloorOfDiv* instr) {
       __ sar(result, power);
     }
   } else {
-    ASSERT(ToRegister(instr->InputAt(0)).is(eax));
+    ASSERT(ToRegister(instr->left()).is(eax));
     ASSERT(ToRegister(instr->result()).is(edx));
-    Register scratch = ToRegister(instr->TempAt(0));
+    Register scratch = ToRegister(instr->temp());
 
     // Find b which: 2^b < divisor_abs < 2^(b+1).
     unsigned b = 31 - CompilerIntrinsics::CountLeadingZeros(divisor_abs);
@@ -1169,11 +1169,11 @@ void LCodeGen::DoMathFloorOfDiv(LMathFloorOfDiv* instr) {
 
 
 void LCodeGen::DoMulI(LMulI* instr) {
-  Register left = ToRegister(instr->InputAt(0));
-  LOperand* right = instr->InputAt(1);
+  Register left = ToRegister(instr->left());
+  LOperand* right = instr->right();
 
   if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) {
-    __ mov(ToRegister(instr->TempAt(0)), left);
+    __ mov(ToRegister(instr->temp()), left);
   }
 
   if (right->IsConstantOperand()) {
@@ -1239,7 +1239,7 @@ void LCodeGen::DoMulI(LMulI* instr) {
       }
     } else {
       // Test the non-zero operand for negative sign.
-      __ or_(ToRegister(instr->TempAt(0)), ToOperand(right));
+      __ or_(ToRegister(instr->temp()), ToOperand(right));
       DeoptimizeIf(sign, instr->environment());
     }
     __ bind(&done);
@@ -1248,8 +1248,8 @@ void LCodeGen::DoMulI(LMulI* instr) {
 
 
 void LCodeGen::DoBitI(LBitI* instr) {
-  LOperand* left = instr->InputAt(0);
-  LOperand* right = instr->InputAt(1);
+  LOperand* left = instr->left();
+  LOperand* right = instr->right();
   ASSERT(left->Equals(instr->result()));
   ASSERT(left->IsRegister());
 
@@ -1289,8 +1289,8 @@ void LCodeGen::DoBitI(LBitI* instr) {
 
 
 void LCodeGen::DoShiftI(LShiftI* instr) {
-  LOperand* left = instr->InputAt(0);
-  LOperand* right = instr->InputAt(1);
+  LOperand* left = instr->left();
+  LOperand* right = instr->right();
   ASSERT(left->Equals(instr->result()));
   ASSERT(left->IsRegister());
   if (right->IsRegister()) {
@@ -1345,8 +1345,8 @@ void LCodeGen::DoShiftI(LShiftI* instr) {
 
 
 void LCodeGen::DoSubI(LSubI* instr) {
-  LOperand* left = instr->InputAt(0);
-  LOperand* right = instr->InputAt(1);
+  LOperand* left = instr->left();
+  LOperand* right = instr->right();
   ASSERT(left->Equals(instr->result()));
 
   if (right->IsConstantOperand()) {
@@ -1375,7 +1375,7 @@ void LCodeGen::DoConstantD(LConstantD* instr) {
   if (BitCast<uint64_t, double>(v) == 0) {
     __ xorps(res, res);
   } else {
-    Register temp = ToRegister(instr->TempAt(0));
+    Register temp = ToRegister(instr->temp());
     uint64_t int_val = BitCast<uint64_t, double>(v);
     int32_t lower = static_cast<int32_t>(int_val);
     int32_t upper = static_cast<int32_t>(int_val >> (kBitsPerInt));
@@ -1418,7 +1418,7 @@ void LCodeGen::DoConstantT(LConstantT* instr) {
 
 void LCodeGen::DoJSArrayLength(LJSArrayLength* instr) {
   Register result = ToRegister(instr->result());
-  Register array = ToRegister(instr->InputAt(0));
+  Register array = ToRegister(instr->value());
   __ mov(result, FieldOperand(array, JSArray::kLengthOffset));
 }
 
@@ -1426,21 +1426,21 @@ void LCodeGen::DoJSArrayLength(LJSArrayLength* instr) {
 void LCodeGen::DoFixedArrayBaseLength(
     LFixedArrayBaseLength* instr) {
   Register result = ToRegister(instr->result());
-  Register array = ToRegister(instr->InputAt(0));
+  Register array = ToRegister(instr->value());
   __ mov(result, FieldOperand(array, FixedArrayBase::kLengthOffset));
 }
 
 
 void LCodeGen::DoMapEnumLength(LMapEnumLength* instr) {
   Register result = ToRegister(instr->result());
-  Register map = ToRegister(instr->InputAt(0));
+  Register map = ToRegister(instr->value());
   __ EnumLength(result, map);
 }
 
 
 void LCodeGen::DoElementsKind(LElementsKind* instr) {
   Register result = ToRegister(instr->result());
-  Register input = ToRegister(instr->InputAt(0));
+  Register input = ToRegister(instr->value());
 
   // Load map into |result|.
   __ mov(result, FieldOperand(input, HeapObject::kMapOffset));
@@ -1454,9 +1454,9 @@ void LCodeGen::DoElementsKind(LElementsKind* instr) {
 
 
 void LCodeGen::DoValueOf(LValueOf* instr) {
-  Register input = ToRegister(instr->InputAt(0));
+  Register input = ToRegister(instr->value());
   Register result = ToRegister(instr->result());
-  Register map = ToRegister(instr->TempAt(0));
+  Register map = ToRegister(instr->temp());
   ASSERT(input.is(result));
 
   Label done;
@@ -1473,9 +1473,9 @@ void LCodeGen::DoValueOf(LValueOf* instr) {
 
 
 void LCodeGen::DoDateField(LDateField* instr) {
-  Register object = ToRegister(instr->InputAt(0));
+  Register object = ToRegister(instr->date());
   Register result = ToRegister(instr->result());
-  Register scratch = ToRegister(instr->TempAt(0));
+  Register scratch = ToRegister(instr->temp());
   Smi* index = instr->index();
   Label runtime, done;
   ASSERT(object.is(result));
@@ -1509,7 +1509,7 @@ void LCodeGen::DoDateField(LDateField* instr) {
 
 
 void LCodeGen::DoBitNotI(LBitNotI* instr) {
-  LOperand* input = instr->InputAt(0);
+  LOperand* input = instr->value();
   ASSERT(input->Equals(instr->result()));
   __ not_(ToRegister(input));
 }
@@ -1528,8 +1528,8 @@ void LCodeGen::DoThrow(LThrow* instr) {
 
 
 void LCodeGen::DoAddI(LAddI* instr) {
-  LOperand* left = instr->InputAt(0);
-  LOperand* right = instr->InputAt(1);
+  LOperand* left = instr->left();
+  LOperand* right = instr->right();
   ASSERT(left->Equals(instr->result()));
 
   if (right->IsConstantOperand()) {
@@ -1545,8 +1545,8 @@ void LCodeGen::DoAddI(LAddI* instr) {
 
 
 void LCodeGen::DoMathMinMax(LMathMinMax* instr) {
-  LOperand* left = instr->InputAt(0);
-  LOperand* right = instr->InputAt(1);
+  LOperand* left = instr->left();
+  LOperand* right = instr->right();
   ASSERT(left->Equals(instr->result()));
   HMathMinMax::Operation operation = instr->hydrogen()->operation();
   if (instr->hydrogen()->representation().IsInteger32()) {
@@ -1606,8 +1606,8 @@ void LCodeGen::DoMathMinMax(LMathMinMax* instr) {
 
 
 void LCodeGen::DoArithmeticD(LArithmeticD* instr) {
-  XMMRegister left = ToDoubleRegister(instr->InputAt(0));
-  XMMRegister right = ToDoubleRegister(instr->InputAt(1));
+  XMMRegister left = ToDoubleRegister(instr->left());
+  XMMRegister right = ToDoubleRegister(instr->right());
   XMMRegister result = ToDoubleRegister(instr->result());
   // Modulo uses a fixed result register.
   ASSERT(instr->op() == Token::MOD || left.is(result));
@@ -1693,17 +1693,17 @@ void LCodeGen::DoBranch(LBranch* instr) {
 
   Representation r = instr->hydrogen()->value()->representation();
   if (r.IsInteger32()) {
-    Register reg = ToRegister(instr->InputAt(0));
+    Register reg = ToRegister(instr->value());
     __ test(reg, Operand(reg));
     EmitBranch(true_block, false_block, not_zero);
   } else if (r.IsDouble()) {
-    XMMRegister reg = ToDoubleRegister(instr->InputAt(0));
+    XMMRegister reg = ToDoubleRegister(instr->value());
     __ xorps(xmm0, xmm0);
     __ ucomisd(reg, xmm0);
     EmitBranch(true_block, false_block, not_equal);
   } else {
     ASSERT(r.IsTagged());
-    Register reg = ToRegister(instr->InputAt(0));
+    Register reg = ToRegister(instr->value());
     HType type = instr->hydrogen()->value()->type();
     if (type.IsBoolean()) {
       __ cmp(reg, factory()->true_value());
@@ -1751,7 +1751,7 @@ void LCodeGen::DoBranch(LBranch* instr) {
 
       Register map = no_reg;  // Keep the compiler happy.
       if (expected.NeedsMap()) {
-        map = ToRegister(instr->TempAt(0));
+        map = ToRegister(instr->temp());
         ASSERT(!map.is(reg));
         __ mov(map, FieldOperand(reg, HeapObject::kMapOffset));
 
@@ -1844,8 +1844,8 @@ Condition LCodeGen::TokenToCondition(Token::Value op, bool is_unsigned) {
 
 
 void LCodeGen::DoCmpIDAndBranch(LCmpIDAndBranch* instr) {
-  LOperand* left = instr->InputAt(0);
-  LOperand* right = instr->InputAt(1);
+  LOperand* left = instr->left();
+  LOperand* right = instr->right();
   int false_block = chunk_->LookupDestination(instr->false_block_id());
   int true_block = chunk_->LookupDestination(instr->true_block_id());
   Condition cc = TokenToCondition(instr->op(), instr->is_double());
@@ -1881,8 +1881,8 @@ void LCodeGen::DoCmpIDAndBranch(LCmpIDAndBranch* instr) {
 
 
 void LCodeGen::DoCmpObjectEqAndBranch(LCmpObjectEqAndBranch* instr) {
-  Register left = ToRegister(instr->InputAt(0));
-  Operand right = ToOperand(instr->InputAt(1));
+  Register left = ToRegister(instr->left());
+  Operand right = ToOperand(instr->right());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
   int true_block = chunk_->LookupDestination(instr->true_block_id());
 
@@ -1892,7 +1892,7 @@ void LCodeGen::DoCmpObjectEqAndBranch(LCmpObjectEqAndBranch* instr) {
 
 
 void LCodeGen::DoCmpConstantEqAndBranch(LCmpConstantEqAndBranch* instr) {
-  Register left = ToRegister(instr->InputAt(0));
+  Register left = ToRegister(instr->left());
   int true_block = chunk_->LookupDestination(instr->true_block_id());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
 
@@ -1902,7 +1902,7 @@ void LCodeGen::DoCmpConstantEqAndBranch(LCmpConstantEqAndBranch* instr) {
 
 
 void LCodeGen::DoIsNilAndBranch(LIsNilAndBranch* instr) {
-  Register reg = ToRegister(instr->InputAt(0));
+  Register reg = ToRegister(instr->value());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
 
   // If the expression is known to be untagged or a smi, then it's definitely
@@ -1932,7 +1932,7 @@ void LCodeGen::DoIsNilAndBranch(LIsNilAndBranch* instr) {
     __ JumpIfSmi(reg, false_label);
     // Check for undetectable objects by looking in the bit field in
     // the map. The object has already been smi checked.
-    Register scratch = ToRegister(instr->TempAt(0));
+    Register scratch = ToRegister(instr->temp());
     __ mov(scratch, FieldOperand(reg, HeapObject::kMapOffset));
     __ movzx_b(scratch, FieldOperand(scratch, Map::kBitFieldOffset));
     __ test(scratch, Immediate(1 << Map::kIsUndetectable));
@@ -1965,8 +1965,8 @@ Condition LCodeGen::EmitIsObject(Register input,
 
 
 void LCodeGen::DoIsObjectAndBranch(LIsObjectAndBranch* instr) {
-  Register reg = ToRegister(instr->InputAt(0));
-  Register temp = ToRegister(instr->TempAt(0));
+  Register reg = ToRegister(instr->value());
+  Register temp = ToRegister(instr->temp());
 
   int true_block = chunk_->LookupDestination(instr->true_block_id());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
@@ -1991,8 +1991,8 @@ Condition LCodeGen::EmitIsString(Register input,
 
 
 void LCodeGen::DoIsStringAndBranch(LIsStringAndBranch* instr) {
-  Register reg = ToRegister(instr->InputAt(0));
-  Register temp = ToRegister(instr->TempAt(0));
+  Register reg = ToRegister(instr->value());
+  Register temp = ToRegister(instr->temp());
 
   int true_block = chunk_->LookupDestination(instr->true_block_id());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
@@ -2005,7 +2005,7 @@ void LCodeGen::DoIsStringAndBranch(LIsStringAndBranch* instr) {
 
 
 void LCodeGen::DoIsSmiAndBranch(LIsSmiAndBranch* instr) {
-  Operand input = ToOperand(instr->InputAt(0));
+  Operand input = ToOperand(instr->value());
 
   int true_block = chunk_->LookupDestination(instr->true_block_id());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
@@ -2016,8 +2016,8 @@ void LCodeGen::DoIsSmiAndBranch(LIsSmiAndBranch* instr) {
 
 
 void LCodeGen::DoIsUndetectableAndBranch(LIsUndetectableAndBranch* instr) {
-  Register input = ToRegister(instr->InputAt(0));
-  Register temp = ToRegister(instr->TempAt(0));
+  Register input = ToRegister(instr->value());
+  Register temp = ToRegister(instr->temp());
 
   int true_block = chunk_->LookupDestination(instr->true_block_id());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
@@ -2087,8 +2087,8 @@ static Condition BranchCondition(HHasInstanceTypeAndBranch* instr) {
 
 
 void LCodeGen::DoHasInstanceTypeAndBranch(LHasInstanceTypeAndBranch* instr) {
-  Register input = ToRegister(instr->InputAt(0));
-  Register temp = ToRegister(instr->TempAt(0));
+  Register input = ToRegister(instr->value());
+  Register temp = ToRegister(instr->temp());
 
   int true_block = chunk_->LookupDestination(instr->true_block_id());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
@@ -2103,7 +2103,7 @@ void LCodeGen::DoHasInstanceTypeAndBranch(LHasInstanceTypeAndBranch* instr) {
 
 
 void LCodeGen::DoGetCachedArrayIndex(LGetCachedArrayIndex* instr) {
-  Register input = ToRegister(instr->InputAt(0));
+  Register input = ToRegister(instr->value());
   Register result = ToRegister(instr->result());
 
   __ AbortIfNotString(input);
@@ -2115,7 +2115,7 @@ void LCodeGen::DoGetCachedArrayIndex(LGetCachedArrayIndex* instr) {
 
 void LCodeGen::DoHasCachedArrayIndexAndBranch(
     LHasCachedArrayIndexAndBranch* instr) {
-  Register input = ToRegister(instr->InputAt(0));
+  Register input = ToRegister(instr->value());
 
   int true_block = chunk_->LookupDestination(instr->true_block_id());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
@@ -2192,9 +2192,9 @@ void LCodeGen::EmitClassOfTest(Label* is_true,
 
 
 void LCodeGen::DoClassOfTestAndBranch(LClassOfTestAndBranch* instr) {
-  Register input = ToRegister(instr->InputAt(0));
-  Register temp = ToRegister(instr->TempAt(0));
-  Register temp2 = ToRegister(instr->TempAt(1));
+  Register input = ToRegister(instr->value());
+  Register temp = ToRegister(instr->temp());
+  Register temp2 = ToRegister(instr->temp2());
 
   Handle<String> class_name = instr->hydrogen()->class_name();
 
@@ -2211,7 +2211,7 @@ void LCodeGen::DoClassOfTestAndBranch(LClassOfTestAndBranch* instr) {
 
 
 void LCodeGen::DoCmpMapAndBranch(LCmpMapAndBranch* instr) {
-  Register reg = ToRegister(instr->InputAt(0));
+  Register reg = ToRegister(instr->value());
   int true_block = instr->true_block_id();
   int false_block = instr->false_block_id();
 
@@ -2257,8 +2257,8 @@ void LCodeGen::DoInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr) {
   deferred = new(zone()) DeferredInstanceOfKnownGlobal(this, instr);
 
   Label done, false_result;
-  Register object = ToRegister(instr->InputAt(1));
-  Register temp = ToRegister(instr->TempAt(0));
+  Register object = ToRegister(instr->value());
+  Register temp = ToRegister(instr->temp());
 
   // A Smi is not an instance of anything.
   __ JumpIfSmi(object, &false_result);
@@ -2267,7 +2267,7 @@ void LCodeGen::DoInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr) {
   // hole value will be patched to the last map/result pair generated by the
   // instanceof stub.
   Label cache_miss;
-  Register map = ToRegister(instr->TempAt(0));
+  Register map = ToRegister(instr->temp());
   __ mov(map, FieldOperand(object, HeapObject::kMapOffset));
   __ bind(deferred->map_check());  // Label for calculating code patching.
   Handle<JSGlobalPropertyCell> cache_cell =
@@ -2318,7 +2318,7 @@ void LCodeGen::DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr,
   // register which is pushed last by PushSafepointRegisters as top of the
   // stack is used to pass the offset to the location of the map check to
   // the stub.
-  Register temp = ToRegister(instr->TempAt(0));
+  Register temp = ToRegister(instr->temp());
   ASSERT(MacroAssembler::SafepointRegisterStackIndex(temp) == 0);
   __ LoadHeapObject(InstanceofStub::right(), instr->function());
   static const int kAdditionalDelta = 13;
@@ -2485,7 +2485,7 @@ void LCodeGen::DoStoreContextSlot(LStoreContextSlot* instr) {
     HType type = instr->hydrogen()->value()->type();
     SmiCheck check_needed =
         type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK;
-    Register temp = ToRegister(instr->TempAt(0));
+    Register temp = ToRegister(instr->temp());
     int offset = Context::SlotOffset(instr->slot_index());
     __ RecordWriteContextSlot(context,
                               offset,
@@ -2650,7 +2650,7 @@ void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) {
 
 void LCodeGen::DoLoadFunctionPrototype(LLoadFunctionPrototype* instr) {
   Register function = ToRegister(instr->function());
-  Register temp = ToRegister(instr->TempAt(0));
+  Register temp = ToRegister(instr->temp());
   Register result = ToRegister(instr->result());
 
   // Check that the function really is a function.
@@ -2692,7 +2692,7 @@ void LCodeGen::DoLoadFunctionPrototype(LLoadFunctionPrototype* instr) {
 
 void LCodeGen::DoLoadElements(LLoadElements* instr) {
   Register result = ToRegister(instr->result());
-  Register input = ToRegister(instr->InputAt(0));
+  Register input = ToRegister(instr->object());
   __ mov(result, FieldOperand(input, JSObject::kElementsOffset));
   if (FLAG_debug_code) {
     Label done, ok, fail;
@@ -2728,7 +2728,7 @@ void LCodeGen::DoLoadElements(LLoadElements* instr) {
 void LCodeGen::DoLoadExternalArrayPointer(
     LLoadExternalArrayPointer* instr) {
   Register result = ToRegister(instr->result());
-  Register input = ToRegister(instr->InputAt(0));
+  Register input = ToRegister(instr->object());
   __ mov(result, FieldOperand(input,
                               ExternalArray::kExternalPointerOffset));
 }
@@ -2941,7 +2941,7 @@ void LCodeGen::DoArgumentsElements(LArgumentsElements* instr) {
 
 
 void LCodeGen::DoArgumentsLength(LArgumentsLength* instr) {
-  Operand elem = ToOperand(instr->InputAt(0));
+  Operand elem = ToOperand(instr->elements());
   Register result = ToRegister(instr->result());
 
   Label done;
@@ -2965,7 +2965,7 @@ void LCodeGen::DoArgumentsLength(LArgumentsLength* instr) {
 void LCodeGen::DoWrapReceiver(LWrapReceiver* instr) {
   Register receiver = ToRegister(instr->receiver());
   Register function = ToRegister(instr->function());
-  Register scratch = ToRegister(instr->TempAt(0));
+  Register scratch = ToRegister(instr->temp());
 
   // If the receiver is null or undefined, we have to pass the global
   // object as a receiver to normal functions. Values have to be
@@ -3053,7 +3053,7 @@ void LCodeGen::DoApplyArguments(LApplyArguments* instr) {
 
 
 void LCodeGen::DoPushArgument(LPushArgument* instr) {
-  LOperand* argument = instr->InputAt(0);
+  LOperand* argument = instr->value();
   EmitPushTaggedOperand(argument);
 }
 
@@ -3084,7 +3084,7 @@ void LCodeGen::DoOuterContext(LOuterContext* instr) {
 
 
 void LCodeGen::DoDeclareGlobals(LDeclareGlobals* instr) {
-  ASSERT(ToRegister(instr->InputAt(0)).is(esi));
+  ASSERT(ToRegister(instr->context()).is(esi));
   __ push(esi);  // The context is the first argument.
   __ push(Immediate(instr->hydrogen()->pairs()));
   __ push(Immediate(Smi::FromInt(instr->hydrogen()->flags())));
@@ -3417,11 +3417,11 @@ void LCodeGen::DoPower(LPower* instr) {
   Representation exponent_type = instr->hydrogen()->right()->representation();
   // Having marked this as a call, we can use any registers.
   // Just make sure that the input/output registers are the expected ones.
-  ASSERT(!instr->InputAt(1)->IsDoubleRegister() ||
-         ToDoubleRegister(instr->InputAt(1)).is(xmm1));
-  ASSERT(!instr->InputAt(1)->IsRegister() ||
-         ToRegister(instr->InputAt(1)).is(eax));
-  ASSERT(ToDoubleRegister(instr->InputAt(0)).is(xmm2));
+  ASSERT(!instr->right()->IsDoubleRegister() ||
+         ToDoubleRegister(instr->right()).is(xmm1));
+  ASSERT(!instr->right()->IsRegister() ||
+         ToRegister(instr->right()).is(eax));
+  ASSERT(ToDoubleRegister(instr->left()).is(xmm2));
   ASSERT(ToDoubleRegister(instr->result()).is(xmm3));
 
   if (exponent_type.IsTagged()) {
@@ -3459,7 +3459,7 @@ void LCodeGen::DoRandom(LRandom* instr) {
   // Having marked this instruction as a call we can use any
   // registers.
   ASSERT(ToDoubleRegister(instr->result()).is(xmm1));
-  ASSERT(ToRegister(instr->InputAt(0)).is(eax));
+  ASSERT(ToRegister(instr->global_object()).is(eax));
   // Assert that the register size is indeed the size of each seed.
   static const int kSeedSize = sizeof(uint32_t);
   STATIC_ASSERT(kPointerSize == kSeedSize);
@@ -3716,8 +3716,8 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
     if (!instr->hydrogen()->NeedsWriteBarrierForMap()) {
       __ mov(FieldOperand(object, HeapObject::kMapOffset), instr->transition());
     } else {
-      Register temp = ToRegister(instr->TempAt(0));
-      Register temp_map = ToRegister(instr->TempAt(1));
+      Register temp = ToRegister(instr->temp());
+      Register temp_map = ToRegister(instr->temp_map());
       __ mov(temp_map, instr->transition());
       __ mov(FieldOperand(object, HeapObject::kMapOffset), temp_map);
       // Update the write barrier for the map field.
@@ -3738,7 +3738,7 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
   if (instr->is_in_object()) {
     __ mov(FieldOperand(object, offset), value);
     if (instr->hydrogen()->NeedsWriteBarrier()) {
-      Register temp = ToRegister(instr->TempAt(0));
+      Register temp = ToRegister(instr->temp());
       // Update the write barrier for the object for in-object properties.
       __ RecordWriteField(object,
                           offset,
@@ -3749,7 +3749,7 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
                           check_needed);
     }
   } else {
-    Register temp = ToRegister(instr->TempAt(0));
+    Register temp = ToRegister(instr->temp());
     __ mov(temp, FieldOperand(object, JSObject::kPropertiesOffset));
     __ mov(FieldOperand(temp, offset), value);
     if (instr->hydrogen()->NeedsWriteBarrier()) {
@@ -3945,7 +3945,7 @@ void LCodeGen::DoStoreKeyedGeneric(LStoreKeyedGeneric* instr) {
 
 void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) {
   Register object_reg = ToRegister(instr->object());
-  Register new_map_reg = ToRegister(instr->new_map_reg());
+  Register new_map_reg = ToRegister(instr->new_map_temp());
 
   Handle<Map> from_map = instr->original_map();
   Handle<Map> to_map = instr->transitioned_map();
@@ -3965,14 +3965,14 @@ void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) {
     __ mov(FieldOperand(object_reg, HeapObject::kMapOffset),
            Immediate(map));
     // Write barrier.
-    ASSERT_NE(instr->temp_reg(), NULL);
+    ASSERT_NE(instr->temp(), NULL);
     __ RecordWriteForMap(object_reg, to_map, new_map_reg,
-                         ToRegister(instr->temp_reg()),
+                         ToRegister(instr->temp()),
                          kDontSaveFPRegs);
   } else if (IsFastSmiElementsKind(from_kind) &&
              IsFastDoubleElementsKind(to_kind)) {
     __ mov(new_map_reg, to_map);
-    Register fixed_object_reg = ToRegister(instr->temp_reg());
+    Register fixed_object_reg = ToRegister(instr->temp());
     ASSERT(fixed_object_reg.is(edx));
     ASSERT(new_map_reg.is(ebx));
     __ mov(fixed_object_reg, object_reg);
@@ -3981,7 +3981,7 @@ void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) {
   } else if (IsFastDoubleElementsKind(from_kind) &&
              IsFastObjectElementsKind(to_kind)) {
     __ mov(new_map_reg, to_map);
-    Register fixed_object_reg = ToRegister(instr->temp_reg());
+    Register fixed_object_reg = ToRegister(instr->temp());
     ASSERT(fixed_object_reg.is(edx));
     ASSERT(new_map_reg.is(ebx));
     __ mov(fixed_object_reg, object_reg);
@@ -4114,7 +4114,7 @@ void LCodeGen::DoStringAdd(LStringAdd* instr) {
 
 
 void LCodeGen::DoInteger32ToDouble(LInteger32ToDouble* instr) {
-  LOperand* input = instr->InputAt(0);
+  LOperand* input = instr->value();
   ASSERT(input->IsRegister() || input->IsStackSlot());
   LOperand* output = instr->result();
   ASSERT(output->IsDoubleRegister());
@@ -4123,9 +4123,9 @@ void LCodeGen::DoInteger32ToDouble(LInteger32ToDouble* instr) {
 
 
 void LCodeGen::DoUint32ToDouble(LUint32ToDouble* instr) {
-  LOperand* input = instr->InputAt(0);
+  LOperand* input = instr->value();
   LOperand* output = instr->result();
-  LOperand* temp = instr->TempAt(0);
+  LOperand* temp = instr->temp();
 
   __ LoadUint32(ToDoubleRegister(output),
                 ToRegister(input),
@@ -4139,16 +4139,14 @@ void LCodeGen::DoNumberTagI(LNumberTagI* instr) {
     DeferredNumberTagI(LCodeGen* codegen, LNumberTagI* instr)
         : LDeferredCode(codegen), instr_(instr) { }
     virtual void Generate() {
-      codegen()->DoDeferredNumberTagI(instr_,
-                                      instr_->InputAt(0),
-                                      SIGNED_INT32);
+      codegen()->DoDeferredNumberTagI(instr_, instr_->value(), SIGNED_INT32);
     }
     virtual LInstruction* instr() { return instr_; }
    private:
     LNumberTagI* instr_;
   };
 
-  LOperand* input = instr->InputAt(0);
+  LOperand* input = instr->value();
   ASSERT(input->IsRegister() && input->Equals(instr->result()));
   Register reg = ToRegister(input);
 
@@ -4165,16 +4163,14 @@ void LCodeGen::DoNumberTagU(LNumberTagU* instr) {
     DeferredNumberTagU(LCodeGen* codegen, LNumberTagU* instr)
         : LDeferredCode(codegen), instr_(instr) { }
     virtual void Generate() {
-      codegen()->DoDeferredNumberTagI(instr_,
-                                      instr_->InputAt(0),
-                                      UNSIGNED_INT32);
+      codegen()->DoDeferredNumberTagI(instr_, instr_->value(), UNSIGNED_INT32);
     }
     virtual LInstruction* instr() { return instr_; }
    private:
     LNumberTagU* instr_;
   };
 
-  LOperand* input = instr->InputAt(0);
+  LOperand* input = instr->value();
   ASSERT(input->IsRegister() && input->Equals(instr->result()));
   Register reg = ToRegister(input);
 
@@ -4251,9 +4247,9 @@ void LCodeGen::DoNumberTagD(LNumberTagD* instr) {
     LNumberTagD* instr_;
   };
 
-  XMMRegister input_reg = ToDoubleRegister(instr->InputAt(0));
+  XMMRegister input_reg = ToDoubleRegister(instr->value());
   Register reg = ToRegister(instr->result());
-  Register tmp = ToRegister(instr->TempAt(0));
+  Register tmp = ToRegister(instr->temp());
 
   DeferredNumberTagD* deferred = new(zone()) DeferredNumberTagD(this, instr);
   if (FLAG_inline_new) {
@@ -4288,7 +4284,7 @@ void LCodeGen::DoDeferredNumberTagD(LNumberTagD* instr) {
 
 
 void LCodeGen::DoSmiTag(LSmiTag* instr) {
-  LOperand* input = instr->InputAt(0);
+  LOperand* input = instr->value();
   ASSERT(input->IsRegister() && input->Equals(instr->result()));
   ASSERT(!instr->hydrogen_value()->CheckFlag(HValue::kCanOverflow));
   __ SmiTag(ToRegister(input));
@@ -4296,7 +4292,7 @@ void LCodeGen::DoSmiTag(LSmiTag* instr) {
 
 
 void LCodeGen::DoSmiUntag(LSmiUntag* instr) {
-  LOperand* input = instr->InputAt(0);
+  LOperand* input = instr->value();
   ASSERT(input->IsRegister() && input->Equals(instr->result()));
   if (instr->needs_check()) {
     __ test(ToRegister(input), Immediate(kSmiTagMask));
@@ -4365,7 +4361,7 @@ void LCodeGen::EmitNumberUntagD(Register input_reg,
 
 void LCodeGen::DoDeferredTaggedToI(LTaggedToI* instr) {
   Label done, heap_number;
-  Register input_reg = ToRegister(instr->InputAt(0));
+  Register input_reg = ToRegister(instr->value());
 
   // Heap number map check.
   __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset),
@@ -4406,7 +4402,7 @@ void LCodeGen::DoDeferredTaggedToI(LTaggedToI* instr) {
       __ mov(input_reg, Operand(esp, 0));  // Low word of answer is the result.
       __ add(Operand(esp), Immediate(kDoubleSize));
     } else {
-      XMMRegister xmm_temp = ToDoubleRegister(instr->TempAt(0));
+      XMMRegister xmm_temp = ToDoubleRegister(instr->temp());
       __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset));
       __ cvttsd2si(input_reg, Operand(xmm0));
       __ cmp(input_reg, 0x80000000u);
@@ -4423,7 +4419,7 @@ void LCodeGen::DoDeferredTaggedToI(LTaggedToI* instr) {
     // Deoptimize if we don't have a heap number.
     DeoptimizeIf(not_equal, instr->environment());
 
-    XMMRegister xmm_temp = ToDoubleRegister(instr->TempAt(0));
+    XMMRegister xmm_temp = ToDoubleRegister(instr->temp());
     __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset));
     __ cvttsd2si(input_reg, Operand(xmm0));
     __ cvtsi2sd(xmm_temp, Operand(input_reg));
@@ -4453,7 +4449,7 @@ void LCodeGen::DoTaggedToI(LTaggedToI* instr) {
     LTaggedToI* instr_;
   };
 
-  LOperand* input = instr->InputAt(0);
+  LOperand* input = instr->value();
   ASSERT(input->IsRegister());
   ASSERT(input->Equals(instr->result()));
 
@@ -4472,9 +4468,9 @@ void LCodeGen::DoTaggedToI(LTaggedToI* instr) {
 
 
 void LCodeGen::DoNumberUntagD(LNumberUntagD* instr) {
-  LOperand* input = instr->InputAt(0);
+  LOperand* input = instr->value();
   ASSERT(input->IsRegister());
-  LOperand* temp = instr->TempAt(0);
+  LOperand* temp = instr->temp();
   ASSERT(temp == NULL || temp->IsRegister());
   LOperand* result = instr->result();
   ASSERT(result->IsDoubleRegister());
@@ -4496,7 +4492,7 @@ void LCodeGen::DoNumberUntagD(LNumberUntagD* instr) {
 
 
 void LCodeGen::DoDoubleToI(LDoubleToI* instr) {
-  LOperand* input = instr->InputAt(0);
+  LOperand* input = instr->value();
   ASSERT(input->IsDoubleRegister());
   LOperand* result = instr->result();
   ASSERT(result->IsRegister());
@@ -4534,7 +4530,7 @@ void LCodeGen::DoDoubleToI(LDoubleToI* instr) {
       __ bind(&done);
     } else {
       Label done;
-      Register temp_reg = ToRegister(instr->TempAt(0));
+      Register temp_reg = ToRegister(instr->temp());
       XMMRegister xmm_scratch = xmm0;
 
       // If cvttsd2si succeeded, we're done. Otherwise, we attempt
@@ -4613,22 +4609,22 @@ void LCodeGen::DoDoubleToI(LDoubleToI* instr) {
 
 
 void LCodeGen::DoCheckSmi(LCheckSmi* instr) {
-  LOperand* input = instr->InputAt(0);
+  LOperand* input = instr->value();
   __ test(ToOperand(input), Immediate(kSmiTagMask));
   DeoptimizeIf(not_zero, instr->environment());
 }
 
 
 void LCodeGen::DoCheckNonSmi(LCheckNonSmi* instr) {
-  LOperand* input = instr->InputAt(0);
+  LOperand* input = instr->value();
   __ test(ToOperand(input), Immediate(kSmiTagMask));
   DeoptimizeIf(zero, instr->environment());
 }
 
 
 void LCodeGen::DoCheckInstanceType(LCheckInstanceType* instr) {
-  Register input = ToRegister(instr->InputAt(0));
-  Register temp = ToRegister(instr->TempAt(0));
+  Register input = ToRegister(instr->value());
+  Register temp = ToRegister(instr->temp());
 
   __ mov(temp, FieldOperand(input, HeapObject::kMapOffset));
 
@@ -4698,7 +4694,7 @@ void LCodeGen::DoCheckMapCommon(Register reg,
 
 
 void LCodeGen::DoCheckMaps(LCheckMaps* instr) {
-  LOperand* input = instr->InputAt(0);
+  LOperand* input = instr->value();
   ASSERT(input->IsRegister());
   Register reg = ToRegister(input);
 
@@ -4764,7 +4760,7 @@ void LCodeGen::DoClampTToUint8(LClampTToUint8* instr) {
 
 
 void LCodeGen::DoCheckPrototypeMaps(LCheckPrototypeMaps* instr) {
-  Register reg = ToRegister(instr->TempAt(0));
+  Register reg = ToRegister(instr->temp());
 
   Handle<JSObject> holder = instr->holder();
   Handle<JSObject> current_prototype = instr->prototype();
@@ -4804,7 +4800,7 @@ void LCodeGen::DoAllocateObject(LAllocateObject* instr) {
       new(zone()) DeferredAllocateObject(this, instr);
 
   Register result = ToRegister(instr->result());
-  Register scratch = ToRegister(instr->TempAt(0));
+  Register scratch = ToRegister(instr->temp());
   Handle<JSFunction> constructor = instr->hydrogen()->constructor();
   Handle<Map> initial_map(constructor->initial_map());
   int instance_size = initial_map->instance_size();
@@ -5123,7 +5119,7 @@ void LCodeGen::DoObjectLiteral(LObjectLiteral* instr) {
 
 
 void LCodeGen::DoToFastProperties(LToFastProperties* instr) {
-  ASSERT(ToRegister(instr->InputAt(0)).is(eax));
+  ASSERT(ToRegister(instr->value()).is(eax));
   __ push(eax);
   CallRuntime(Runtime::kToFastProperties, 1, instr);
 }
@@ -5203,14 +5199,14 @@ void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) {
 
 
 void LCodeGen::DoTypeof(LTypeof* instr) {
-  LOperand* input = instr->InputAt(1);
+  LOperand* input = instr->value();
   EmitPushTaggedOperand(input);
   CallRuntime(Runtime::kTypeof, 1, instr);
 }
 
 
 void LCodeGen::DoTypeofIsAndBranch(LTypeofIsAndBranch* instr) {
-  Register input = ToRegister(instr->InputAt(0));
+  Register input = ToRegister(instr->value());
   int true_block = chunk_->LookupDestination(instr->true_block_id());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
   Label* true_label = chunk_->GetAssemblyLabel(true_block);
@@ -5294,7 +5290,7 @@ Condition LCodeGen::EmitTypeofIs(Label* true_label,
 
 
 void LCodeGen::DoIsConstructCallAndBranch(LIsConstructCallAndBranch* instr) {
-  Register temp = ToRegister(instr->TempAt(0));
+  Register temp = ToRegister(instr->temp());
   int true_block = chunk_->LookupDestination(instr->true_block_id());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
 
diff --git a/src/ia32/lithium-ia32.cc b/src/ia32/lithium-ia32.cc
index fea07a8da2..f843f3bc4e 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -196,22 +196,22 @@ void LGoto::PrintDataTo(StringStream* stream) {
 
 void LBranch::PrintDataTo(StringStream* stream) {
   stream->Add("B%d | B%d on ", true_block_id(), false_block_id());
-  InputAt(0)->PrintTo(stream);
+  value()->PrintTo(stream);
 }
 
 
 void LCmpIDAndBranch::PrintDataTo(StringStream* stream) {
   stream->Add("if ");
-  InputAt(0)->PrintTo(stream);
+  left()->PrintTo(stream);
   stream->Add(" %s ", Token::String(op()));
-  InputAt(1)->PrintTo(stream);
+  right()->PrintTo(stream);
   stream->Add(" then B%d else B%d", true_block_id(), false_block_id());
 }
 
 
 void LIsNilAndBranch::PrintDataTo(StringStream* stream) {
   stream->Add("if ");
-  InputAt(0)->PrintTo(stream);
+  value()->PrintTo(stream);
   stream->Add(kind() == kStrictEquality ? " === " : " == ");
   stream->Add(nil() == kNullValue ? "null" : "undefined");
   stream->Add(" then B%d else B%d", true_block_id(), false_block_id());
@@ -220,57 +220,57 @@ void LIsNilAndBranch::PrintDataTo(StringStream* stream) {
 
 void LIsObjectAndBranch::PrintDataTo(StringStream* stream) {
   stream->Add("if is_object(");
-  InputAt(0)->PrintTo(stream);
+  value()->PrintTo(stream);
   stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
 }
 
 
 void LIsStringAndBranch::PrintDataTo(StringStream* stream) {
   stream->Add("if is_string(");
-  InputAt(0)->PrintTo(stream);
+  value()->PrintTo(stream);
   stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
 }
 
 
 void LIsSmiAndBranch::PrintDataTo(StringStream* stream) {
   stream->Add("if is_smi(");
-  InputAt(0)->PrintTo(stream);
+  value()->PrintTo(stream);
   stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
 }
 
 
 void LIsUndetectableAndBranch::PrintDataTo(StringStream* stream) {
   stream->Add("if is_undetectable(");
-  InputAt(0)->PrintTo(stream);
+  value()->PrintTo(stream);
   stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
 }
 
 
 void LStringCompareAndBranch::PrintDataTo(StringStream* stream) {
   stream->Add("if string_compare(");
-  InputAt(1)->PrintTo(stream);
-  InputAt(2)->PrintTo(stream);
+  left()->PrintTo(stream);
+  right()->PrintTo(stream);
   stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
 }
 
 
 void LHasInstanceTypeAndBranch::PrintDataTo(StringStream* stream) {
   stream->Add("if has_instance_type(");
-  InputAt(0)->PrintTo(stream);
+  value()->PrintTo(stream);
   stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
 }
 
 
 void LHasCachedArrayIndexAndBranch::PrintDataTo(StringStream* stream) {
   stream->Add("if has_cached_array_index(");
-  InputAt(0)->PrintTo(stream);
+  value()->PrintTo(stream);
   stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
 }
 
 
 void LClassOfTestAndBranch::PrintDataTo(StringStream* stream) {
   stream->Add("if class_of_test(");
-  InputAt(0)->PrintTo(stream);
+  value()->PrintTo(stream);
   stream->Add(", \"%o\") then B%d else B%d",
               *hydrogen()->class_name(),
               true_block_id(),
@@ -280,7 +280,7 @@ void LClassOfTestAndBranch::PrintDataTo(StringStream* stream) {
 
 void LTypeofIsAndBranch::PrintDataTo(StringStream* stream) {
   stream->Add("if typeof ");
-  InputAt(0)->PrintTo(stream);
+  value()->PrintTo(stream);
   stream->Add(" == \"%s\" then B%d else B%d",
               *hydrogen()->type_literal()->ToCString(),
               true_block_id(), false_block_id());
@@ -294,34 +294,34 @@ void LCallConstantFunction::PrintDataTo(StringStream* stream) {
 
 void LUnaryMathOperation::PrintDataTo(StringStream* stream) {
   stream->Add("/%s ", hydrogen()->OpName());
-  InputAt(0)->PrintTo(stream);
+  value()->PrintTo(stream);
 }
 
 
 void LMathPowHalf::PrintDataTo(StringStream* stream) {
   stream->Add("/pow_half ");
-  InputAt(0)->PrintTo(stream);
+  value()->PrintTo(stream);
 }
 
 
 void LLoadContextSlot::PrintDataTo(StringStream* stream) {
-  InputAt(0)->PrintTo(stream);
+  context()->PrintTo(stream);
   stream->Add("[%d]", slot_index());
 }
 
 
 void LStoreContextSlot::PrintDataTo(StringStream* stream) {
-  InputAt(0)->PrintTo(stream);
+  context()->PrintTo(stream);
   stream->Add("[%d] <- ", slot_index());
-  InputAt(1)->PrintTo(stream);
+  value()->PrintTo(stream);
 }
 
 
 void LInvokeFunction::PrintDataTo(StringStream* stream) {
   stream->Add("= ");
-  InputAt(0)->PrintTo(stream);
+  context()->PrintTo(stream);
   stream->Add(" ");
-  InputAt(1)->PrintTo(stream);
+  function()->PrintTo(stream);
   stream->Add(" #%d / ", arity());
 }
 
@@ -350,7 +350,9 @@ void LCallKnownGlobal::PrintDataTo(StringStream* stream) {
 
 void LCallNew::PrintDataTo(StringStream* stream) {
   stream->Add("= ");
-  InputAt(0)->PrintTo(stream);
+  context()->PrintTo(stream);
+  stream->Add(" ");
+  constructor()->PrintTo(stream);
   stream->Add(" #%d / ", arity());
 }
 
diff --git a/src/ia32/lithium-ia32.h b/src/ia32/lithium-ia32.h
index 83a6c6f32b..4643f95f48 100644
--- a/src/ia32/lithium-ia32.h
+++ b/src/ia32/lithium-ia32.h
@@ -257,9 +257,6 @@ class LInstruction: public ZoneObject {
   virtual bool HasResult() const = 0;
   virtual LOperand* result() = 0;
 
-  virtual int TempCount() = 0;
-  virtual LOperand* TempAt(int i) = 0;
-
   LOperand* FirstInput() { return InputAt(0); }
   LOperand* Output() { return HasResult() ? result() : NULL; }
 
@@ -273,6 +270,10 @@ class LInstruction: public ZoneObject {
   virtual int InputCount() = 0;
   virtual LOperand* InputAt(int i) = 0;
 
+  friend class TempIterator;
+  virtual int TempCount() = 0;
+  virtual LOperand* TempAt(int i) = 0;
+
   LEnvironment* environment_;
   SetOncePointer<LPointerMap> pointer_map_;
   HValue* hydrogen_value_;
@@ -292,18 +293,18 @@ class LTemplateInstruction: public LInstruction {
   void set_result(LOperand* operand) { results_[0] = operand; }
   LOperand* result() { return results_[0]; }
 
-  LOperand* InputAt(int i) { return inputs_[i]; }
-
-  int TempCount() { return T; }
-  LOperand* TempAt(int i) { return temps_[i]; }
-
  protected:
   EmbeddedContainer<LOperand*, R> results_;
   EmbeddedContainer<LOperand*, I> inputs_;
   EmbeddedContainer<LOperand*, T> temps_;
 
  private:
+  // Iterator support.
   virtual int InputCount() { return I; }
+  virtual LOperand* InputAt(int i) { return inputs_[i]; }
+
+  virtual int TempCount() { return T; }
+  virtual LOperand* TempAt(int i) { return temps_[i]; }
 };
 
 
@@ -423,11 +424,11 @@ class LCallStub: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = context;
   }
 
+  LOperand* context() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CallStub, "call-stub")
   DECLARE_HYDROGEN_ACCESSOR(CallStub)
 
-  LOperand* context() { return inputs_[0]; }
-
   TranscendentalCache::Type transcendental_type() {
     return hydrogen()->transcendental_type();
   }
@@ -467,10 +468,11 @@ class LWrapReceiver: public LTemplateInstruction<1, 2, 1> {
     temps_[0] = temp;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(WrapReceiver, "wrap-receiver")
-
   LOperand* receiver() { return inputs_[0]; }
   LOperand* function() { return inputs_[1]; }
+  LOperand* temp() { return temps_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(WrapReceiver, "wrap-receiver")
 };
 
 
@@ -486,12 +488,12 @@ class LApplyArguments: public LTemplateInstruction<1, 4, 0> {
     inputs_[3] = elements;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(ApplyArguments, "apply-arguments")
-
   LOperand* function() { return inputs_[0]; }
   LOperand* receiver() { return inputs_[1]; }
   LOperand* length() { return inputs_[2]; }
   LOperand* elements() { return inputs_[3]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(ApplyArguments, "apply-arguments")
 };
 
 
@@ -503,12 +505,12 @@ class LAccessArgumentsAt: public LTemplateInstruction<1, 3, 0> {
     inputs_[2] = index;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(AccessArgumentsAt, "access-arguments-at")
-
   LOperand* arguments() { return inputs_[0]; }
   LOperand* length() { return inputs_[1]; }
   LOperand* index() { return inputs_[2]; }
 
+  DECLARE_CONCRETE_INSTRUCTION(AccessArgumentsAt, "access-arguments-at")
+
   virtual void PrintDataTo(StringStream* stream);
 };
 
@@ -519,6 +521,8 @@ class LArgumentsLength: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = elements;
   }
 
+  LOperand* elements() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(ArgumentsLength, "arguments-length")
 };
 
@@ -538,6 +542,10 @@ class LModI: public LTemplateInstruction<1, 2, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(ModI, "mod-i")
   DECLARE_HYDROGEN_ACCESSOR(Mod)
 };
@@ -551,6 +559,9 @@ class LDivI: public LTemplateInstruction<1, 2, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(DivI, "div-i")
   DECLARE_HYDROGEN_ACCESSOR(Div)
 };
@@ -566,6 +577,10 @@ class LMathFloorOfDiv: public LTemplateInstruction<1, 2, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(MathFloorOfDiv, "math-floor-of-div")
   DECLARE_HYDROGEN_ACCESSOR(MathFloorOfDiv)
 };
@@ -579,6 +594,10 @@ class LMulI: public LTemplateInstruction<1, 2, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(MulI, "mul-i")
   DECLARE_HYDROGEN_ACCESSOR(Mul)
 };
@@ -591,6 +610,9 @@ class LCmpIDAndBranch: public LControlInstruction<2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CmpIDAndBranch, "cmp-id-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(CompareIDAndBranch)
 
@@ -646,6 +668,9 @@ class LCmpObjectEqAndBranch: public LControlInstruction<2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CmpObjectEqAndBranch,
                                "cmp-object-eq-and-branch")
 };
@@ -657,6 +682,8 @@ class LCmpConstantEqAndBranch: public LControlInstruction<1, 0> {
     inputs_[0] = left;
   }
 
+  LOperand* left() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CmpConstantEqAndBranch,
                                "cmp-constant-eq-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(CompareConstantEqAndBranch)
@@ -670,6 +697,9 @@ class LIsNilAndBranch: public LControlInstruction<1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(IsNilAndBranch, "is-nil-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(IsNilAndBranch)
 
@@ -687,6 +717,9 @@ class LIsObjectAndBranch: public LControlInstruction<1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(IsObjectAndBranch, "is-object-and-branch")
 
   virtual void PrintDataTo(StringStream* stream);
@@ -700,6 +733,9 @@ class LIsStringAndBranch: public LControlInstruction<1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(IsStringAndBranch, "is-string-and-branch")
 
   virtual void PrintDataTo(StringStream* stream);
@@ -712,6 +748,8 @@ class LIsSmiAndBranch: public LControlInstruction<1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(IsSmiAndBranch, "is-smi-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(IsSmiAndBranch)
 
@@ -726,6 +764,9 @@ class LIsUndetectableAndBranch: public LControlInstruction<1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(IsUndetectableAndBranch,
                                "is-undetectable-and-branch")
 
@@ -741,6 +782,9 @@ class LStringCompareAndBranch: public LControlInstruction<3, 0> {
     inputs_[2] = right;
   }
 
+  LOperand* left() { return inputs_[1]; }
+  LOperand* right() { return inputs_[2]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StringCompareAndBranch,
                                "string-compare-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(StringCompareAndBranch)
@@ -758,6 +802,9 @@ class LHasInstanceTypeAndBranch: public LControlInstruction<1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(HasInstanceTypeAndBranch,
                                "has-instance-type-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(HasInstanceTypeAndBranch)
@@ -772,6 +819,8 @@ class LGetCachedArrayIndex: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(GetCachedArrayIndex, "get-cached-array-index")
   DECLARE_HYDROGEN_ACCESSOR(GetCachedArrayIndex)
 };
@@ -783,8 +832,11 @@ class LHasCachedArrayIndexAndBranch: public LControlInstruction<1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(HasCachedArrayIndexAndBranch,
                                "has-cached-array-index-and-branch")
+
   virtual void PrintDataTo(StringStream* stream);
 };
 
@@ -795,6 +847,8 @@ class LIsConstructCallAndBranch: public LControlInstruction<0, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(IsConstructCallAndBranch,
                                "is-construct-call-and-branch")
 };
@@ -808,6 +862,10 @@ class LClassOfTestAndBranch: public LControlInstruction<1, 2> {
     temps_[1] = temp2;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(ClassOfTestAndBranch,
                                "class-of-test-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(ClassOfTestAndBranch)
@@ -839,9 +897,9 @@ class LInstanceOf: public LTemplateInstruction<1, 3, 0> {
     inputs_[2] = right;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(InstanceOf, "instance-of")
-
   LOperand* context() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(InstanceOf, "instance-of")
 };
 
 
@@ -853,6 +911,9 @@ class LInstanceOfKnownGlobal: public LTemplateInstruction<1, 2, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[1]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(InstanceOfKnownGlobal,
                                "instance-of-known-global")
   DECLARE_HYDROGEN_ACCESSOR(InstanceOfKnownGlobal)
@@ -892,10 +953,13 @@ class LBitI: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
-  Token::Value op() const { return hydrogen()->op(); }
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
 
   DECLARE_CONCRETE_INSTRUCTION(BitI, "bit-i")
   DECLARE_HYDROGEN_ACCESSOR(Bitwise)
+
+  Token::Value op() const { return hydrogen()->op(); }
 };
 
 
@@ -907,12 +971,14 @@ class LShiftI: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
-  Token::Value op() const { return op_; }
-
-  bool can_deopt() const { return can_deopt_; }
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
 
   DECLARE_CONCRETE_INSTRUCTION(ShiftI, "shift-i")
 
+  Token::Value op() const { return op_; }
+  bool can_deopt() const { return can_deopt_; }
+
  private:
   Token::Value op_;
   bool can_deopt_;
@@ -926,6 +992,9 @@ class LSubI: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(SubI, "sub-i")
   DECLARE_HYDROGEN_ACCESSOR(Sub)
 };
@@ -946,6 +1015,8 @@ class LConstantD: public LTemplateInstruction<1, 0, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(ConstantD, "constant-d")
   DECLARE_HYDROGEN_ACCESSOR(Constant)
 
@@ -964,11 +1035,14 @@ class LConstantT: public LTemplateInstruction<1, 0, 0> {
 
 class LBranch: public LControlInstruction<1, 1> {
  public:
-  explicit LBranch(LOperand* value, LOperand* temp) {
+  LBranch(LOperand* value, LOperand* temp) {
     inputs_[0] = value;
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(Branch, "branch")
   DECLARE_HYDROGEN_ACCESSOR(Branch)
 
@@ -982,6 +1056,8 @@ class LCmpMapAndBranch: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CmpMapAndBranch, "cmp-map-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(CompareMap)
 
@@ -1003,6 +1079,8 @@ class LJSArrayLength: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(JSArrayLength, "js-array-length")
   DECLARE_HYDROGEN_ACCESSOR(JSArrayLength)
 };
@@ -1014,6 +1092,8 @@ class LFixedArrayBaseLength: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(FixedArrayBaseLength,
                                "fixed-array-base-length")
   DECLARE_HYDROGEN_ACCESSOR(FixedArrayBaseLength)
@@ -1026,6 +1106,8 @@ class LMapEnumLength: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(MapEnumLength, "map-enum-length")
 };
 
@@ -1036,6 +1118,8 @@ class LElementsKind: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(ElementsKind, "elements-kind")
   DECLARE_HYDROGEN_ACCESSOR(ElementsKind)
 };
@@ -1048,6 +1132,9 @@ class LValueOf: public LTemplateInstruction<1, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(ValueOf, "value-of")
   DECLARE_HYDROGEN_ACCESSOR(ValueOf)
 };
@@ -1061,6 +1148,9 @@ class LDateField: public LTemplateInstruction<1, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* date() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(DateField, "date-field")
   DECLARE_HYDROGEN_ACCESSOR(DateField)
 
@@ -1091,6 +1181,8 @@ class LBitNotI: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(BitNotI, "bit-not-i")
 };
 
@@ -1102,6 +1194,9 @@ class LAddI: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(AddI, "add-i")
   DECLARE_HYDROGEN_ACCESSOR(Add)
 };
@@ -1114,6 +1209,9 @@ class LMathMinMax: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(MathMinMax, "min-max")
   DECLARE_HYDROGEN_ACCESSOR(MathMinMax)
 };
@@ -1126,6 +1224,9 @@ class LPower: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(Power, "power")
   DECLARE_HYDROGEN_ACCESSOR(Power)
 };
@@ -1137,6 +1238,8 @@ class LRandom: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = global_object;
   }
 
+  LOperand* global_object() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(Random, "random")
   DECLARE_HYDROGEN_ACCESSOR(Random)
 };
@@ -1150,6 +1253,9 @@ class LArithmeticD: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   Token::Value op() const { return op_; }
 
   virtual Opcode opcode() const { return LInstruction::kArithmeticD; }
@@ -1173,14 +1279,15 @@ class LArithmeticT: public LTemplateInstruction<1, 3, 0> {
     inputs_[2] = right;
   }
 
+  LOperand* context() { return inputs_[0]; }
+  LOperand* left() { return inputs_[1]; }
+  LOperand* right() { return inputs_[2]; }
+
   virtual Opcode opcode() const { return LInstruction::kArithmeticT; }
   virtual void CompileToNative(LCodeGen* generator);
   virtual const char* Mnemonic() const;
 
   Token::Value op() const { return op_; }
-  LOperand* context() { return inputs_[0]; }
-  LOperand* left() { return inputs_[1]; }
-  LOperand* right() { return inputs_[2]; }
 
  private:
   Token::Value op_;
@@ -1203,10 +1310,10 @@ class LLoadNamedField: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = object;
   }
 
+  LOperand* object() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadNamedField, "load-named-field")
   DECLARE_HYDROGEN_ACCESSOR(LoadNamedField)
-
-  LOperand* object() { return inputs_[0]; }
 };
 
 
@@ -1217,11 +1324,11 @@ class LLoadNamedFieldPolymorphic: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = object;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(LoadNamedField, "load-named-field-polymorphic")
-  DECLARE_HYDROGEN_ACCESSOR(LoadNamedFieldPolymorphic)
-
   LOperand* context() { return inputs_[0]; }
   LOperand* object() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(LoadNamedField, "load-named-field-polymorphic")
+  DECLARE_HYDROGEN_ACCESSOR(LoadNamedFieldPolymorphic)
 };
 
 
@@ -1232,11 +1339,12 @@ class LLoadNamedGeneric: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = object;
   }
 
+  LOperand* context() { return inputs_[0]; }
+  LOperand* object() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadNamedGeneric, "load-named-generic")
   DECLARE_HYDROGEN_ACCESSOR(LoadNamedGeneric)
 
-  LOperand* context() { return inputs_[0]; }
-  LOperand* object() { return inputs_[1]; }
   Handle<Object> name() const { return hydrogen()->name(); }
 };
 
@@ -1248,10 +1356,11 @@ class LLoadFunctionPrototype: public LTemplateInstruction<1, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* function() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadFunctionPrototype, "load-function-prototype")
   DECLARE_HYDROGEN_ACCESSOR(LoadFunctionPrototype)
-
-  LOperand* function() { return inputs_[0]; }
 };
 
 
@@ -1261,6 +1370,8 @@ class LLoadElements: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = object;
   }
 
+  LOperand* object() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadElements, "load-elements")
 };
 
@@ -1271,6 +1382,8 @@ class LLoadExternalArrayPointer: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = object;
   }
 
+  LOperand* object() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadExternalArrayPointer,
                                "load-external-array-pointer")
 };
@@ -1283,11 +1396,12 @@ class LLoadKeyedFastElement: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = key;
   }
 
+  LOperand* elements() { return inputs_[0]; }
+  LOperand* key() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadKeyedFastElement, "load-keyed-fast-element")
   DECLARE_HYDROGEN_ACCESSOR(LoadKeyedFastElement)
 
-  LOperand* elements() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
   uint32_t additional_index() const { return hydrogen()->index_offset(); }
 };
 
@@ -1299,12 +1413,13 @@ class LLoadKeyedFastDoubleElement: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = key;
   }
 
+  LOperand* elements() { return inputs_[0]; }
+  LOperand* key() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadKeyedFastDoubleElement,
                                "load-keyed-fast-double-element")
   DECLARE_HYDROGEN_ACCESSOR(LoadKeyedFastDoubleElement)
 
-  LOperand* elements() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
   uint32_t additional_index() const { return hydrogen()->index_offset(); }
 };
 
@@ -1329,12 +1444,13 @@ class LLoadKeyedSpecializedArrayElement: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = key;
   }
 
+  LOperand* external_pointer() { return inputs_[0]; }
+  LOperand* key() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadKeyedSpecializedArrayElement,
                                "load-keyed-specialized-array-element")
   DECLARE_HYDROGEN_ACCESSOR(LoadKeyedSpecializedArrayElement)
 
-  LOperand* external_pointer() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
   ElementsKind elements_kind() const {
     return hydrogen()->elements_kind();
   }
@@ -1350,11 +1466,11 @@ class LLoadKeyedGeneric: public LTemplateInstruction<1, 3, 0> {
     inputs_[2] = key;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(LoadKeyedGeneric, "load-keyed-generic")
-
   LOperand* context() { return inputs_[0]; }
   LOperand* object() { return inputs_[1]; }
   LOperand* key() { return inputs_[2]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(LoadKeyedGeneric, "load-keyed-generic")
 };
 
 
@@ -1372,11 +1488,12 @@ class LLoadGlobalGeneric: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = global_object;
   }
 
+  LOperand* context() { return inputs_[0]; }
+  LOperand* global_object() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadGlobalGeneric, "load-global-generic")
   DECLARE_HYDROGEN_ACCESSOR(LoadGlobalGeneric)
 
-  LOperand* context() { return inputs_[0]; }
-  LOperand* global_object() { return inputs_[1]; }
   Handle<Object> name() const { return hydrogen()->name(); }
   bool for_typeof() const { return hydrogen()->for_typeof(); }
 };
@@ -1388,10 +1505,10 @@ class LStoreGlobalCell: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StoreGlobalCell, "store-global-cell")
   DECLARE_HYDROGEN_ACCESSOR(StoreGlobalCell)
-
-  LOperand* value() { return inputs_[0]; }
 };
 
 
@@ -1405,13 +1522,14 @@ class LStoreGlobalGeneric: public LTemplateInstruction<0, 3, 0> {
     inputs_[2] = value;
   }
 
+  LOperand* context() { return inputs_[0]; }
+  LOperand* global_object() { return inputs_[1]; }
+  LOperand* value() { return inputs_[2]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StoreGlobalGeneric, "store-global-generic")
   DECLARE_HYDROGEN_ACCESSOR(StoreGlobalGeneric)
 
-  LOperand* context() { return InputAt(0); }
-  LOperand* global_object() { return InputAt(1); }
   Handle<Object> name() const { return hydrogen()->name(); }
-  LOperand* value() { return InputAt(2); }
   StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
 };
 
@@ -1422,10 +1540,11 @@ class LLoadContextSlot: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = context;
   }
 
+  LOperand* context() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadContextSlot, "load-context-slot")
   DECLARE_HYDROGEN_ACCESSOR(LoadContextSlot)
 
-  LOperand* context() { return InputAt(0); }
   int slot_index() { return hydrogen()->slot_index(); }
 
   virtual void PrintDataTo(StringStream* stream);
@@ -1440,11 +1559,13 @@ class LStoreContextSlot: public LTemplateInstruction<0, 2, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* context() { return inputs_[0]; }
+  LOperand* value() { return inputs_[1]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StoreContextSlot, "store-context-slot")
   DECLARE_HYDROGEN_ACCESSOR(StoreContextSlot)
 
-  LOperand* context() { return InputAt(0); }
-  LOperand* value() { return InputAt(1); }
   int slot_index() { return hydrogen()->slot_index(); }
 
   virtual void PrintDataTo(StringStream* stream);
@@ -1457,6 +1578,8 @@ class LPushArgument: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(PushArgument, "push-argument")
 };
 
@@ -1493,9 +1616,9 @@ class LOuterContext: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = context;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(OuterContext, "outer-context")
+  LOperand* context() { return inputs_[0]; }
 
-  LOperand* context() { return InputAt(0); }
+  DECLARE_CONCRETE_INSTRUCTION(OuterContext, "outer-context")
 };
 
 
@@ -1505,6 +1628,8 @@ class LDeclareGlobals: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = context;
   }
 
+  LOperand* context() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(DeclareGlobals, "declare-globals")
   DECLARE_HYDROGEN_ACCESSOR(DeclareGlobals)
 };
@@ -1516,9 +1641,9 @@ class LGlobalObject: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = context;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(GlobalObject, "global-object")
+  LOperand* context() { return inputs_[0]; }
 
-  LOperand* context() { return InputAt(0); }
+  DECLARE_CONCRETE_INSTRUCTION(GlobalObject, "global-object")
 };
 
 
@@ -1528,9 +1653,9 @@ class LGlobalReceiver: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = global_object;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(GlobalReceiver, "global-receiver")
+  LOperand* global() { return inputs_[0]; }
 
-  LOperand* global() { return InputAt(0); }
+  DECLARE_CONCRETE_INSTRUCTION(GlobalReceiver, "global-receiver")
 };
 
 
@@ -1553,12 +1678,12 @@ class LInvokeFunction: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = function;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(InvokeFunction, "invoke-function")
-  DECLARE_HYDROGEN_ACCESSOR(InvokeFunction)
-
   LOperand* context() { return inputs_[0]; }
   LOperand* function() { return inputs_[1]; }
 
+  DECLARE_CONCRETE_INSTRUCTION(InvokeFunction, "invoke-function")
+  DECLARE_HYDROGEN_ACCESSOR(InvokeFunction)
+
   virtual void PrintDataTo(StringStream* stream);
 
   int arity() const { return hydrogen()->argument_count() - 1; }
@@ -1573,12 +1698,12 @@ class LCallKeyed: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = key;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(CallKeyed, "call-keyed")
-  DECLARE_HYDROGEN_ACCESSOR(CallKeyed)
-
   LOperand* context() { return inputs_[0]; }
   LOperand* key() { return inputs_[1]; }
 
+  DECLARE_CONCRETE_INSTRUCTION(CallKeyed, "call-keyed")
+  DECLARE_HYDROGEN_ACCESSOR(CallKeyed)
+
   virtual void PrintDataTo(StringStream* stream);
 
   int arity() const { return hydrogen()->argument_count() - 1; }
@@ -1591,12 +1716,13 @@ class LCallNamed: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = context;
   }
 
+  LOperand* context() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CallNamed, "call-named")
   DECLARE_HYDROGEN_ACCESSOR(CallNamed)
 
   virtual void PrintDataTo(StringStream* stream);
 
-  LOperand* context() { return inputs_[0]; }
   Handle<String> name() const { return hydrogen()->name(); }
   int arity() const { return hydrogen()->argument_count() - 1; }
 };
@@ -1609,11 +1735,12 @@ class LCallFunction: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = function;
   }
 
+  LOperand* context() { return inputs_[0]; }
+  LOperand* function() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CallFunction, "call-function")
   DECLARE_HYDROGEN_ACCESSOR(CallFunction)
 
-  LOperand* context() { return inputs_[0]; }
-  LOperand* function() { return inputs_[1]; }
   int arity() const { return hydrogen()->argument_count() - 1; }
 };
 
@@ -1624,12 +1751,13 @@ class LCallGlobal: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = context;
   }
 
+  LOperand* context() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CallGlobal, "call-global")
   DECLARE_HYDROGEN_ACCESSOR(CallGlobal)
 
   virtual void PrintDataTo(StringStream* stream);
 
-  LOperand* context() { return inputs_[0]; }
   Handle<String> name() const {return hydrogen()->name(); }
   int arity() const { return hydrogen()->argument_count() - 1; }
 };
@@ -1654,13 +1782,14 @@ class LCallNew: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = constructor;
   }
 
+  LOperand* context() { return inputs_[0]; }
+  LOperand* constructor() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CallNew, "call-new")
   DECLARE_HYDROGEN_ACCESSOR(CallNew)
 
   virtual void PrintDataTo(StringStream* stream);
 
-  LOperand* context() { return inputs_[0]; }
-  LOperand* constructor() { return inputs_[1]; }
   int arity() const { return hydrogen()->argument_count() - 1; }
 };
 
@@ -1670,10 +1799,12 @@ class LCallRuntime: public LTemplateInstruction<1, 1, 0> {
   explicit LCallRuntime(LOperand* context) {
     inputs_[0] = context;
   }
+
+  LOperand* context() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CallRuntime, "call-runtime")
   DECLARE_HYDROGEN_ACCESSOR(CallRuntime)
 
-  LOperand* context() { return inputs_[0]; }
   const Runtime::Function* function() const { return hydrogen()->function(); }
   int arity() const { return hydrogen()->argument_count(); }
 };
@@ -1685,6 +1816,8 @@ class LInteger32ToDouble: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(Integer32ToDouble, "int32-to-double")
 };
 
@@ -1696,6 +1829,9 @@ class LUint32ToDouble: public LTemplateInstruction<1, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(Uint32ToDouble, "uint32-to-double")
 };
 
@@ -1706,6 +1842,8 @@ class LNumberTagI: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(NumberTagI, "number-tag-i")
 };
 
@@ -1717,6 +1855,8 @@ class LNumberTagU: public LTemplateInstruction<1, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(NumberTagU, "number-tag-u")
 };
 
@@ -1728,6 +1868,9 @@ class LNumberTagD: public LTemplateInstruction<1, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(NumberTagD, "number-tag-d")
 };
 
@@ -1740,6 +1883,9 @@ class LDoubleToI: public LTemplateInstruction<1, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(DoubleToI, "double-to-i")
   DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
 
@@ -1755,6 +1901,9 @@ class LTaggedToI: public LTemplateInstruction<1, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(TaggedToI, "tagged-to-i")
   DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
 
@@ -1768,6 +1917,8 @@ class LSmiTag: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(SmiTag, "smi-tag")
 };
 
@@ -1779,6 +1930,9 @@ class LNumberUntagD: public LTemplateInstruction<1, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(NumberUntagD, "double-untag")
   DECLARE_HYDROGEN_ACCESSOR(Change);
 };
@@ -1791,6 +1945,8 @@ class LSmiUntag: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(SmiUntag, "smi-untag")
 
   bool needs_check() const { return needs_check_; }
@@ -1812,14 +1968,16 @@ class LStoreNamedField: public LTemplateInstruction<0, 2, 2> {
     temps_[1] = temp_map;
   }
 
+  LOperand* object() { return inputs_[0]; }
+  LOperand* value() { return inputs_[1]; }
+  LOperand* temp() { return temps_[0]; }
+  LOperand* temp_map() { return temps_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StoreNamedField, "store-named-field")
   DECLARE_HYDROGEN_ACCESSOR(StoreNamedField)
 
   virtual void PrintDataTo(StringStream* stream);
 
-  LOperand* object() { return inputs_[0]; }
-  LOperand* value() { return inputs_[1]; }
-
   Handle<Object> name() const { return hydrogen()->name(); }
   bool is_in_object() { return hydrogen()->is_in_object(); }
   int offset() { return hydrogen()->offset(); }
@@ -1835,14 +1993,14 @@ class LStoreNamedGeneric: public LTemplateInstruction<0, 3, 0> {
     inputs_[2] = value;
   }
 
+  LOperand* context() { return inputs_[0]; }
+  LOperand* object() { return inputs_[1]; }
+  LOperand* value() { return inputs_[2]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StoreNamedGeneric, "store-named-generic")
   DECLARE_HYDROGEN_ACCESSOR(StoreNamedGeneric)
 
   virtual void PrintDataTo(StringStream* stream);
-
-  LOperand* context() { return inputs_[0]; }
-  LOperand* object() { return inputs_[1]; }
-  LOperand* value() { return inputs_[2]; }
   Handle<Object> name() const { return hydrogen()->name(); }
   StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
 };
@@ -1856,15 +2014,15 @@ class LStoreKeyedFastElement: public LTemplateInstruction<0, 3, 0> {
     inputs_[2] = val;
   }
 
+  LOperand* object() { return inputs_[0]; }
+  LOperand* key() { return inputs_[1]; }
+  LOperand* value() { return inputs_[2]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StoreKeyedFastElement,
                                "store-keyed-fast-element")
   DECLARE_HYDROGEN_ACCESSOR(StoreKeyedFastElement)
 
   virtual void PrintDataTo(StringStream* stream);
-
-  LOperand* object() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
-  LOperand* value() { return inputs_[2]; }
   uint32_t additional_index() const { return hydrogen()->index_offset(); }
 };
 
@@ -1879,15 +2037,16 @@ class LStoreKeyedFastDoubleElement: public LTemplateInstruction<0, 3, 0> {
     inputs_[2] = val;
   }
 
+  LOperand* elements() { return inputs_[0]; }
+  LOperand* key() { return inputs_[1]; }
+  LOperand* value() { return inputs_[2]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StoreKeyedFastDoubleElement,
                                "store-keyed-fast-double-element")
   DECLARE_HYDROGEN_ACCESSOR(StoreKeyedFastDoubleElement)
 
   virtual void PrintDataTo(StringStream* stream);
 
-  LOperand* elements() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
-  LOperand* value() { return inputs_[2]; }
   uint32_t additional_index() const { return hydrogen()->index_offset(); }
 
   bool NeedsCanonicalization() { return hydrogen()->NeedsCanonicalization(); }
@@ -1904,13 +2063,14 @@ class LStoreKeyedSpecializedArrayElement: public LTemplateInstruction<0, 3, 0> {
     inputs_[2] = val;
   }
 
+  LOperand* external_pointer() { return inputs_[0]; }
+  LOperand* key() { return inputs_[1]; }
+  LOperand* value() { return inputs_[2]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StoreKeyedSpecializedArrayElement,
                                "store-keyed-specialized-array-element")
   DECLARE_HYDROGEN_ACCESSOR(StoreKeyedSpecializedArrayElement)
 
-  LOperand* external_pointer() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
-  LOperand* value() { return inputs_[2]; }
   ElementsKind elements_kind() const {
     return hydrogen()->elements_kind();
   }
@@ -1930,15 +2090,16 @@ class LStoreKeyedGeneric: public LTemplateInstruction<0, 4, 0> {
     inputs_[3] = value;
   }
 
+  LOperand* context() { return inputs_[0]; }
+  LOperand* object() { return inputs_[1]; }
+  LOperand* key() { return inputs_[2]; }
+  LOperand* value() { return inputs_[3]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StoreKeyedGeneric, "store-keyed-generic")
   DECLARE_HYDROGEN_ACCESSOR(StoreKeyedGeneric)
 
   virtual void PrintDataTo(StringStream* stream);
 
-  LOperand* context() { return inputs_[0]; }
-  LOperand* object() { return inputs_[1]; }
-  LOperand* key() { return inputs_[2]; }
-  LOperand* value() { return inputs_[3]; }
   StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
 };
 
@@ -1947,21 +2108,22 @@ class LTransitionElementsKind: public LTemplateInstruction<1, 1, 2> {
  public:
   LTransitionElementsKind(LOperand* object,
                           LOperand* new_map_temp,
-                          LOperand* temp_reg) {
+                          LOperand* temp) {
     inputs_[0] = object;
     temps_[0] = new_map_temp;
-    temps_[1] = temp_reg;
+    temps_[1] = temp;
   }
 
+  LOperand* object() { return inputs_[0]; }
+  LOperand* new_map_temp() { return temps_[0]; }
+  LOperand* temp() { return temps_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(TransitionElementsKind,
                                "transition-elements-kind")
   DECLARE_HYDROGEN_ACCESSOR(TransitionElementsKind)
 
   virtual void PrintDataTo(StringStream* stream);
 
-  LOperand* object() { return inputs_[0]; }
-  LOperand* new_map_reg() { return temps_[0]; }
-  LOperand* temp_reg() { return temps_[1]; }
   Handle<Map> original_map() { return hydrogen()->original_map(); }
   Handle<Map> transitioned_map() { return hydrogen()->transitioned_map(); }
 };
@@ -1975,12 +2137,12 @@ class LStringAdd: public LTemplateInstruction<1, 3, 0> {
     inputs_[2] = right;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(StringAdd, "string-add")
-  DECLARE_HYDROGEN_ACCESSOR(StringAdd)
-
   LOperand* context() { return inputs_[0]; }
   LOperand* left() { return inputs_[1]; }
   LOperand* right() { return inputs_[2]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(StringAdd, "string-add")
+  DECLARE_HYDROGEN_ACCESSOR(StringAdd)
 };
 
 
@@ -1992,12 +2154,12 @@ class LStringCharCodeAt: public LTemplateInstruction<1, 3, 0> {
     inputs_[2] = index;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(StringCharCodeAt, "string-char-code-at")
-  DECLARE_HYDROGEN_ACCESSOR(StringCharCodeAt)
-
   LOperand* context() { return inputs_[0]; }
   LOperand* string() { return inputs_[1]; }
   LOperand* index() { return inputs_[2]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(StringCharCodeAt, "string-char-code-at")
+  DECLARE_HYDROGEN_ACCESSOR(StringCharCodeAt)
 };
 
 
@@ -2008,11 +2170,11 @@ class LStringCharFromCode: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = char_code;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(StringCharFromCode, "string-char-from-code")
-  DECLARE_HYDROGEN_ACCESSOR(StringCharFromCode)
-
   LOperand* context() { return inputs_[0]; }
   LOperand* char_code() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(StringCharFromCode, "string-char-from-code")
+  DECLARE_HYDROGEN_ACCESSOR(StringCharFromCode)
 };
 
 
@@ -2022,10 +2184,10 @@ class LStringLength: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = string;
   }
 
+  LOperand* string() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StringLength, "string-length")
   DECLARE_HYDROGEN_ACCESSOR(StringLength)
-
-  LOperand* string() { return inputs_[0]; }
 };
 
 
@@ -2049,6 +2211,9 @@ class LCheckInstanceType: public LTemplateInstruction<0, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CheckInstanceType, "check-instance-type")
   DECLARE_HYDROGEN_ACCESSOR(CheckInstanceType)
 };
@@ -2060,6 +2225,8 @@ class LCheckMaps: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CheckMaps, "check-maps")
   DECLARE_HYDROGEN_ACCESSOR(CheckMaps)
 };
@@ -2071,6 +2238,8 @@ class LCheckPrototypeMaps: public LTemplateInstruction<0, 0, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CheckPrototypeMaps, "check-prototype-maps")
   DECLARE_HYDROGEN_ACCESSOR(CheckPrototypeMaps)
 
@@ -2085,6 +2254,8 @@ class LCheckSmi: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CheckSmi, "check-smi")
 };
 
@@ -2132,6 +2303,8 @@ class LCheckNonSmi: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CheckNonSmi, "check-non-smi")
 };
 
@@ -2143,10 +2316,11 @@ class LAllocateObject: public LTemplateInstruction<1, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* context() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(AllocateObject, "allocate-object")
   DECLARE_HYDROGEN_ACCESSOR(AllocateObject)
-
-  LOperand* context() { return inputs_[0]; }
 };
 
 
@@ -2223,6 +2397,8 @@ class LToFastProperties: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(ToFastProperties, "to-fast-properties")
   DECLARE_HYDROGEN_ACCESSOR(ToFastProperties)
 };
@@ -2235,6 +2411,9 @@ class LTypeof: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = value;
   }
 
+  LOperand* context() { return inputs_[0]; }
+  LOperand* value() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(Typeof, "typeof")
 };
 
@@ -2245,6 +2424,8 @@ class LTypeofIsAndBranch: public LControlInstruction<1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(TypeofIsAndBranch, "typeof-is-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(TypeofIsAndBranch)
 
@@ -2262,11 +2443,11 @@ class LDeleteProperty: public LTemplateInstruction<1, 3, 0> {
     inputs_[2] = key;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(DeleteProperty, "delete-property")
-
   LOperand* context() { return inputs_[0]; }
   LOperand* object() { return inputs_[1]; }
   LOperand* key() { return inputs_[2]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(DeleteProperty, "delete-property")
 };