Make the strict-mode calling convention for contextual calls the default one.

src/x64/builtins-x64.cc

 // Copyright 2012 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 826 matching lines @@
       __ Set(rdx, 0);  // indicate regular JS_FUNCTION
 
       __ pop(rax);
       __ SmiToInteger32(rax, rax);
     }
 
     // Restore the function to rdi.
     __ movq(rdi, args.GetReceiverOperand());
     __ jmp(&patch_receiver, Label::kNear);
 
-    // Use the global receiver object from the called function as the
-    // receiver.
     __ bind(&use_global_receiver);
-    CallStubCompiler::FetchGlobalProxy(masm, rbx, rdi);
+    __ movq(rbx,
+            Operand(rsi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
+    __ movq(rbx, FieldOperand(rbx, GlobalObject::kGlobalReceiverOffset));
 
     __ bind(&patch_receiver);
     __ movq(args.GetArgumentOperand(1), rbx);
 
     __ jmp(&shift_arguments);
   }
 
   // 3b. Check for function proxy.
   __ bind(&slow);
   __ Set(rdx, 1);  // indicate function proxy
@@ skipping 49 matching lines @@
   }
 
   // 5b. Get the code to call from the function and check that the number of
   //     expected arguments matches what we're providing.  If so, jump
   //     (tail-call) to the code in register edx without checking arguments.
   __ movq(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
   __ movsxlq(rbx,
              FieldOperand(rdx,
                           SharedFunctionInfo::kFormalParameterCountOffset));
   __ movq(rdx, FieldOperand(rdi, JSFunction::kCodeEntryOffset));
-  __ SetCallKind(rcx, CALL_AS_METHOD);
+  __ SetCallKind(rcx, CALL_AS_FUNCTION);
   __ cmpq(rax, rbx);
   __ j(not_equal,
        masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(),
        RelocInfo::CODE_TARGET);
 
   ParameterCount expected(0);
   __ InvokeCode(rdx, expected, expected, JUMP_FUNCTION,
-                NullCallWrapper(), CALL_AS_METHOD);
+                NullCallWrapper(), CALL_AS_FUNCTION);
 }
 
 
 void Builtins::Generate_FunctionApply(MacroAssembler* masm) {
   // Stack at entry:
   // rsp     : return address
   // rsp[8]  : arguments
   // rsp[16] : receiver ("this")
   // rsp[24] : function
   {
@@ skipping 79 matching lines @@
     __ CmpObjectType(rbx, FIRST_SPEC_OBJECT_TYPE, rcx);
     __ j(above_equal, &push_receiver);
 
     // Convert the receiver to an object.
     __ bind(&call_to_object);
     __ push(rbx);
     __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION);
     __ movq(rbx, rax);
     __ jmp(&push_receiver, Label::kNear);
 
-    // Use the current global receiver object as the receiver.
     __ bind(&use_global_receiver);
-    CallStubCompiler::FetchGlobalProxy(masm, rbx, rdi);
+    __ movq(rbx,
+            Operand(rsi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
+    __ movq(rbx, FieldOperand(rbx, GlobalObject::kGlobalReceiverOffset));
+
     // Push the receiver.
     __ bind(&push_receiver);
     __ push(rbx);
 
     // Copy all arguments from the array to the stack.
     Label entry, loop;
     __ movq(rax, Operand(rbp, kIndexOffset));
     __ jmp(&entry);
     __ bind(&loop);
     __ movq(rdx, Operand(rbp, kArgumentsOffset));  // load arguments
@@ skipping 12 matching lines @@
 
     // Update the index on the stack and in register rax.
     __ movq(rax, Operand(rbp, kIndexOffset));
     __ SmiAddConstant(rax, rax, Smi::FromInt(1));
     __ movq(Operand(rbp, kIndexOffset), rax);
 
     __ bind(&entry);
     __ cmpq(rax, Operand(rbp, kLimitOffset));
     __ j(not_equal, &loop);
 
-    // Invoke the function.
+    // Call the function.
     Label call_proxy;
     ParameterCount actual(rax);
     __ SmiToInteger32(rax, rax);
     __ movq(rdi, Operand(rbp, kFunctionOffset));
     __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx);
     __ j(not_equal, &call_proxy);
     __ InvokeFunction(rdi, actual, CALL_FUNCTION,
-                      NullCallWrapper(), CALL_AS_METHOD);
+                      NullCallWrapper(), CALL_AS_FUNCTION);
 
     frame_scope.GenerateLeaveFrame();
     __ ret(3 * kPointerSize);  // remove this, receiver, and arguments
 
-    // Invoke the function proxy.
+    // Call the function proxy.
     __ bind(&call_proxy);
     __ push(rdi);  // add function proxy as last argument
     __ incq(rax);
     __ Set(rbx, 0);
-    __ SetCallKind(rcx, CALL_AS_METHOD);
+    __ SetCallKind(rcx, CALL_AS_FUNCTION);
     __ GetBuiltinEntry(rdx, Builtins::CALL_FUNCTION_PROXY);
     __ call(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(),
             RelocInfo::CODE_TARGET);
 
     // Leave internal frame.
   }
   __ ret(3 * kPointerSize);  // remove this, receiver, and arguments
 }
 
 
@@ skipping 357 matching lines @@
   __ bind(&ok);
   __ ret(0);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64