Support symbol comparison in crankshaft.

src/ia32/lithium-ia32.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1095 matching lines @@
 
       LOperand* temp1 = TempRegister();
       LOperand* temp2 = TempRegister();
       return new LIsObjectAndBranch(UseRegisterAtStart(compare->value()),
                                     temp1,
                                     temp2);
     } else if (v->IsCompareJSObjectEq()) {
       HCompareJSObjectEq* compare = HCompareJSObjectEq::cast(v);
       return new LCmpJSObjectEqAndBranch(UseRegisterAtStart(compare->left()),
                                          UseRegisterAtStart(compare->right()));
+    } else if (v->IsCompareSymbolEq()) {
+      HCompareSymbolEq* compare = HCompareSymbolEq::cast(v);
+      return new LCmpSymbolEqAndBranch(UseRegisterAtStart(compare->left()),
+                                       UseRegisterAtStart(compare->right()));
     } else if (v->IsInstanceOf()) {
       HInstanceOf* instance_of = HInstanceOf::cast(v);
       LOperand* left = UseFixed(instance_of->left(), InstanceofStub::left());
       LOperand* right = UseFixed(instance_of->right(), InstanceofStub::right());
       LOperand* context = UseFixed(instance_of->context(), esi);
       LInstanceOfAndBranch* result =
           new LInstanceOfAndBranch(context, left, right);
       return MarkAsCall(result, instr);
     } else if (v->IsTypeofIs()) {
       HTypeofIs* typeof_is = HTypeofIs::cast(v);
@@ skipping 407 matching lines @@
 
 LInstruction* LChunkBuilder::DoCompareJSObjectEq(
     HCompareJSObjectEq* instr) {
   LOperand* left = UseRegisterAtStart(instr->left());
   LOperand* right = UseRegisterAtStart(instr->right());
   LCmpJSObjectEq* result = new LCmpJSObjectEq(left, right);
   return DefineAsRegister(result);
 }
 
 
+LInstruction* LChunkBuilder::DoCompareSymbolEq(
+    HCompareSymbolEq* instr) {
+  LOperand* left = UseRegisterAtStart(instr->left());
+  LOperand* right = UseRegisterAtStart(instr->right());
+  LCmpSymbolEq* result = new LCmpSymbolEq(left, right);
+  return DefineAsRegister(result);
+}
+
+
 LInstruction* LChunkBuilder::DoIsNull(HIsNull* instr) {
   ASSERT(instr->value()->representation().IsTagged());
   LOperand* value = UseRegisterAtStart(instr->value());
 
   return DefineAsRegister(new LIsNull(value));
 }
 
 
 LInstruction* LChunkBuilder::DoIsObject(HIsObject* instr) {
   ASSERT(instr->value()->representation().IsTagged());
@@ skipping 658 matching lines @@
   LOperand* key = UseOrConstantAtStart(instr->key());
   LOperand* object = UseOrConstantAtStart(instr->object());
   LIn* result = new LIn(key, object);
   return MarkAsCall(DefineFixed(result, eax), instr);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32