X64 Crankshaft: Add Typeof and TypeofIs to x64 lithium.

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 1915 matching lines @@
 LInstruction* LChunkBuilder::DoAccessArgumentsAt(HAccessArgumentsAt* instr) {
   LOperand* arguments = UseRegister(instr->arguments());
   LOperand* length = UseTempRegister(instr->length());
   LOperand* index = Use(instr->index());
   LAccessArgumentsAt* result = new LAccessArgumentsAt(arguments, length, index);
   return AssignEnvironment(DefineAsRegister(result));
 }
 
 
 LInstruction* LChunkBuilder::DoTypeof(HTypeof* instr) {
-  Abort("Unimplemented: %s", "DoTypeof");
-  return NULL;
+  LTypeof* result = new LTypeof(UseAtStart(instr->value()));
+  return MarkAsCall(DefineFixed(result, rax), instr);
 }
 
 
 LInstruction* LChunkBuilder::DoTypeofIs(HTypeofIs* instr) {
-  Abort("Unimplemented: %s", "DoTypeofIs");
-  return NULL;
+  return DefineSameAsFirst(new LTypeofIs(UseRegister(instr->value())));
 }
 
 
 LInstruction* LChunkBuilder::DoIsConstructCall(HIsConstructCall* instr) {
   return DefineAsRegister(new LIsConstructCall);
 }
 
 
 LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) {
   HEnvironment* env = current_block_->last_environment();
@@ skipping 47 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