Make _CallFunction proxy-aware.

src/x64/code-stubs-x64.cc

Index: src/x64/code-stubs-x64.cc
diff --git a/src/x64/code-stubs-x64.cc b/src/x64/code-stubs-x64.cc
index b210f74c8a9f18de084915e59d37107873e8d5bf..937cf321d50b3e4cbf27594369a305ecfbeba6ec 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -3342,6 +3342,7 @@ Object* CallFunctionStub::GetCachedValue(Address address) {
 
 
 void CallFunctionStub::Generate(MacroAssembler* masm) {
+  // rdi : the function to call
   Label slow, non_function;
 
   // The receiver might implicitly be the global object. This is
@@ -3362,10 +3363,6 @@ void CallFunctionStub::Generate(MacroAssembler* masm) {
     __ bind(&call);
   }
 
-  // Get the function to call from the stack.
-  // +2 ~ receiver, return address
-  __ movq(rdi, Operand(rsp, (argc_ + 2) * kPointerSize));
-
   // Check that the function really is a JavaScript function.
   __ JumpIfSmi(rdi, &non_function);
   // Goto slow case if we do not have a function.
@@ -3402,7 +3399,7 @@ void CallFunctionStub::Generate(MacroAssembler* masm) {
   __ push(rcx);
   __ Set(rax, argc_ + 1);
   __ Set(rbx, 0);
-  __ SetCallKind(rcx, CALL_AS_FUNCTION);
+  __ SetCallKind(rcx, CALL_AS_METHOD);
   __ GetBuiltinEntry(rdx, Builtins::CALL_FUNCTION_PROXY);
   {
     Handle<Code> adaptor =