[runtime] [proxy] removing JSFunctionProxy and related code.

src/full-codegen/x64/full-codegen-x64.cc

Index: src/full-codegen/x64/full-codegen-x64.cc
diff --git a/src/full-codegen/x64/full-codegen-x64.cc b/src/full-codegen/x64/full-codegen-x64.cc
index c156fcc80cad6c17bcd170df24a40937e050c239..961cefa4f52404982174e120bc40ede50f7e1538 100644
--- a/src/full-codegen/x64/full-codegen-x64.cc
+++ b/src/full-codegen/x64/full-codegen-x64.cc
@@ -994,9 +994,8 @@ void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) {
 
   // Check for proxies.
   Label call_runtime;
-  STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_JS_RECEIVER_TYPE);
-  __ CmpObjectType(rax, LAST_JS_PROXY_TYPE, rcx);
-  __ j(below_equal, &call_runtime);
+  __ CmpObjectType(rax, JS_PROXY_TYPE, rcx);
+  __ j(equal, &call_runtime);
 
   // Check cache validity in generated code. This is a fast case for
   // the JSObject::IsSimpleEnum cache validity checks. If we cannot
@@ -1059,8 +1058,8 @@ void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) {
           TypeFeedbackVector::MegamorphicSentinel(isolate()));
   __ Move(rbx, Smi::FromInt(1));  // Smi indicates slow check
   __ movp(rcx, Operand(rsp, 0 * kPointerSize));  // Get enumerated object
-  STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_JS_RECEIVER_TYPE);
-  __ CmpObjectType(rcx, LAST_JS_PROXY_TYPE, rcx);
+  STATIC_ASSERT(JS_PROXY_TYPE == FIRST_JS_RECEIVER_TYPE);
+  __ CmpObjectType(rcx, JS_PROXY_TYPE, rcx);
   __ j(above, &non_proxy);
   __ Move(rbx, Smi::FromInt(0));  // Zero indicates proxy
   __ bind(&non_proxy);
@@ -3119,14 +3118,11 @@ void FullCodeGenerator::EmitIsJSProxy(CallRuntime* expr) {
   context()->PrepareTest(&materialize_true, &materialize_false, &if_true,
                          &if_false, &fall_through);
 
+
   __ JumpIfSmi(rax, if_false);
-  Register map = rbx;
-  __ movp(map, FieldOperand(rax, HeapObject::kMapOffset));
-  __ CmpInstanceType(map, FIRST_JS_PROXY_TYPE);
-  __ j(less, if_false);
-  __ CmpInstanceType(map, LAST_JS_PROXY_TYPE);
+  __ CmpObjectType(rax, JS_PROXY_TYPE, rbx);
   PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
-  Split(less_equal, if_true, if_false, fall_through);
+  Split(equal, if_true, if_false, fall_through);
 
   context()->Plug(if_true, if_false);
 }