Specially handle the key of the LoadKeyed and StoreKeyed instruction for x32 port.

src/x64/lithium-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/lithium-allocator-inl.h"
 #include "src/x64/lithium-x64.h"
@@ skipping 2108 matching lines @@
   if (dehoisted_key_ids->Contains(candidate->id())) return;
   dehoisted_key_ids->Add(candidate->id());
   if (!candidate->IsPhi()) return;
   for (int i = 0; i < candidate->OperandCount(); ++i) {
     FindDehoistedKeyDefinitions(candidate->OperandAt(i));
   }
 }
 
 
 LInstruction* LChunkBuilder::DoLoadKeyed(HLoadKeyed* instr) {
-  ASSERT(instr->key()->representation().IsInteger32());
+  ASSERT((kPointerSize == kInt64Size &&
+          instr->key()->representation().IsInteger32()) ||
+         (kPointerSize == kInt32Size &&
+          instr->key()->representation().IsSmiOrInteger32()));
   ElementsKind elements_kind = instr->elements_kind();
-  LOperand* key = UseRegisterOrConstantAtStart(instr->key());
+  LOperand* key = NULL;
   LInstruction* result = NULL;
 
+  if (kPointerSize == kInt64Size) {
+    key = UseRegisterOrConstantAtStart(instr->key());
+  } else {
+    bool clobbers_key = ExternalArrayOpRequiresTemp(
+        instr->key()->representation(), elements_kind);
+    key = clobbers_key
+        ? UseTempRegister(instr->key())
+        : UseRegisterOrConstantAtStart(instr->key());
+  }
+
   if ((kPointerSize == kInt64Size) && instr->IsDehoisted()) {
     FindDehoistedKeyDefinitions(instr->key());
   }
 
   if (!instr->is_typed_elements()) {
     LOperand* obj = UseRegisterAtStart(instr->elements());
     result = DefineAsRegister(new(zone()) LLoadKeyed(obj, key));
   } else {
     ASSERT(
         (instr->representation().IsInteger32() &&
@@ skipping 73 matching lines @@
   ASSERT((instr->is_fixed_typed_array() &&
           instr->elements()->representation().IsTagged()) ||
          (instr->is_external() &&
           instr->elements()->representation().IsExternal()));
   bool val_is_temp_register =
       elements_kind == EXTERNAL_UINT8_CLAMPED_ELEMENTS ||
       elements_kind == EXTERNAL_FLOAT32_ELEMENTS ||
       elements_kind == FLOAT32_ELEMENTS;
   LOperand* val = val_is_temp_register ? UseTempRegister(instr->value())
       : UseRegister(instr->value());
-  LOperand* key = UseRegisterOrConstantAtStart(instr->key());
+  LOperand* key = NULL;
+  if (kPointerSize == kInt64Size) {
+    key = UseRegisterOrConstantAtStart(instr->key());
+  } else {
+    bool clobbers_key = ExternalArrayOpRequiresTemp(
+        instr->key()->representation(), elements_kind);
+    key = clobbers_key
+        ? UseTempRegister(instr->key())
+        : UseRegisterOrConstantAtStart(instr->key());
+  }
   LOperand* backing_store = UseRegister(instr->elements());
   return new(zone()) LStoreKeyed(backing_store, key, val);
 }
 
 
 LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), rsi);
   LOperand* object = UseFixed(instr->object(), rdx);
   LOperand* key = UseFixed(instr->key(), rcx);
   LOperand* value = UseFixed(instr->value(), rax);
@@ skipping 364 matching lines @@
   LOperand* function = UseRegisterAtStart(instr->function());
   LAllocateBlockContext* result =
       new(zone()) LAllocateBlockContext(context, function);
   return MarkAsCall(DefineFixed(result, rsi), instr);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64