Make "typeof this" return object in fast compiler.

Review URL: http://codereview.chromium.org/366028

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3227 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/fast-codegen-arm.cc

@@ -1031,7 +1031,9 @@ void FastCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
       ASSERT_EQ(Expression::kValue, expr->expression()->context());
 
       VariableProxy* proxy = expr->expression()->AsVariableProxy();
-      if (proxy != NULL && proxy->var()->is_global()) {
+      if (proxy != NULL &&
+          !proxy->var()->is_this() &&
+          proxy->var()->is_global()) {
         Comment cmnt(masm_, "Global variable");
         __ ldr(r0, CodeGenerator::GlobalObject());
         __ push(r0);

src/ia32/fast-codegen-ia32.cc

@@ -1027,7 +1027,9 @@ void FastCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
       ASSERT_EQ(Expression::kValue, expr->expression()->context());
 
       VariableProxy* proxy = expr->expression()->AsVariableProxy();
-      if (proxy != NULL && proxy->var()->is_global()) {
+      if (proxy != NULL &&
+          !proxy->var()->is_this() &&
+          proxy->var()->is_global()) {
         Comment cmnt(masm_, "Global variable");
         __ push(CodeGenerator::GlobalObject());
         __ mov(ecx, Immediate(proxy->name()));

src/x64/fast-codegen-x64.cc

@@ -1102,7 +1102,9 @@ void FastCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
       ASSERT_EQ(Expression::kValue, expr->expression()->context());
 
       VariableProxy* proxy = expr->expression()->AsVariableProxy();
-      if (proxy != NULL && proxy->var()->is_global()) {
+      if (proxy != NULL &&
+          !proxy->var()->is_this() &&
+          proxy->var()->is_global()) {
         Comment cmnt(masm_, "Global variable");
         __ push(CodeGenerator::GlobalObject());
         __ Move(rcx, proxy->name());