Support symbol comparison in crankshaft.

src/arm/lithium-arm.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 1089 matching lines @@
     } else if (v->IsIsObject()) {
       HIsObject* compare = HIsObject::cast(v);
       ASSERT(compare->value()->representation().IsTagged());
 
       LOperand* temp = TempRegister();
       return new LIsObjectAndBranch(UseRegisterAtStart(compare->value()), temp);
     } 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);
       LInstruction* result =
           new LInstanceOfAndBranch(UseFixed(instance_of->left(), r0),
                                    UseFixed(instance_of->right(), r1));
       return MarkAsCall(result, instr);
     } else if (v->IsTypeofIs()) {
       HTypeofIs* typeof_is = HTypeofIs::cast(v);
       return new LTypeofIsAndBranch(UseTempRegister(typeof_is->value()));
     } else if (v->IsIsConstructCall()) {
@@ skipping 380 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 626 matching lines @@
 
 LInstruction* LChunkBuilder::DoIn(HIn* instr) {
   LOperand* key = UseRegisterAtStart(instr->key());
   LOperand* object = UseRegisterAtStart(instr->object());
   LIn* result = new LIn(key, object);
   return MarkAsCall(DefineFixed(result, r0), instr);
 }
 
 
 } }  // namespace v8::internal