x64: Implement regexp literals and string CharCodeAt in lithium backend.

src/x64/lithium-x64.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 1764 matching lines @@
 LInstruction* LChunkBuilder::DoStoreNamedGeneric(HStoreNamedGeneric* instr) {
   LOperand* object = UseFixed(instr->object(), rdx);
   LOperand* value = UseFixed(instr->value(), rax);
 
   LStoreNamedGeneric* result = new LStoreNamedGeneric(object, value);
   return MarkAsCall(result, instr);
 }
 
 
 LInstruction* LChunkBuilder::DoStringCharCodeAt(HStringCharCodeAt* instr) {
-  Abort("Unimplemented: %s", "DoStringCharCodeAt");
-  return NULL;
+  LOperand* string = UseRegister(instr->string());
+  LOperand* index = UseRegisterOrConstant(instr->index());
+  LStringCharCodeAt* result = new LStringCharCodeAt(string, index);
+  return AssignEnvironment(AssignPointerMap(DefineAsRegister(result)));
 }
 
 
 LInstruction* LChunkBuilder::DoStringLength(HStringLength* instr) {
   LOperand* string = UseRegisterAtStart(instr->value());
   return DefineAsRegister(new LStringLength(string));
 }
 
 
 LInstruction* LChunkBuilder::DoArrayLiteral(HArrayLiteral* instr) {
   return MarkAsCall(DefineFixed(new LArrayLiteral, rax), instr);
 }
 
 
 LInstruction* LChunkBuilder::DoObjectLiteral(HObjectLiteral* instr) {
   return MarkAsCall(DefineFixed(new LObjectLiteral, rax), instr);
 }
 
 
 LInstruction* LChunkBuilder::DoRegExpLiteral(HRegExpLiteral* instr) {
-  Abort("Unimplemented: %s", "DoRegExpLiteral");
-  return NULL;
+  return MarkAsCall(DefineFixed(new LRegExpLiteral, rax), instr);
 }
 
 
 LInstruction* LChunkBuilder::DoFunctionLiteral(HFunctionLiteral* instr) {
   return MarkAsCall(DefineFixed(new LFunctionLiteral, rax), instr);
 }
 
 
 LInstruction* LChunkBuilder::DoDeleteProperty(HDeleteProperty* instr) {
   Abort("Unimplemented: %s", "DoDeleteProperty");
@@ skipping 112 matching lines @@
 
 LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) {
   HEnvironment* outer = current_block_->last_environment()->outer();
   current_block_->UpdateEnvironment(outer);
   return NULL;
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64