Rollback trunk to 3.21.16.2

src/ia32/macro-assembler-ia32.h

 // 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 222 matching lines @@
 
   void EnterApiExitFrame(int argc);
 
   // Leave the current exit frame. Expects the return value in
   // register eax:edx (untouched) and the pointer to the first
   // argument in register esi.
   void LeaveExitFrame(bool save_doubles);
 
   // Leave the current exit frame. Expects the return value in
   // register eax (untouched).
-  void LeaveApiExitFrame(bool restore_context);
+  void LeaveApiExitFrame();
 
   // Find the function context up the context chain.
   void LoadContext(Register dst, int context_chain_length);
 
   // Conditionally load the cached Array transitioned map of type
   // transitioned_kind from the native context if the map in register
   // map_in_out is the cached Array map in the native context of
   // expected_kind.
   void LoadTransitionedArrayMapConditional(
       ElementsKind expected_kind,
@@ skipping 105 matching lines @@
   // Store the function for the given builtin in the target register.
   void GetBuiltinFunction(Register target, Builtins::JavaScript id);
 
   // Store the code object for the given builtin in the target register.
   void GetBuiltinEntry(Register target, Builtins::JavaScript id);
 
   // Expression support
   void Set(Register dst, const Immediate& x);
   void Set(const Operand& dst, const Immediate& x);
 
-  // cvtsi2sd instruction only writes to the low 64-bit of dst register, which
-  // hinders register renaming and makes dependence chains longer. So we use
-  // xorps to clear the dst register before cvtsi2sd to solve this issue.
-  void Cvtsi2sd(XMMRegister dst, Register src) { Cvtsi2sd(dst, Operand(src)); }
-  void Cvtsi2sd(XMMRegister dst, const Operand& src);
-
   // Support for constant splitting.
   bool IsUnsafeImmediate(const Immediate& x);
   void SafeSet(Register dst, const Immediate& x);
   void SafePush(const Immediate& x);
 
   // Compare object type for heap object.
   // Incoming register is heap_object and outgoing register is map.
   void CmpObjectType(Register heap_object, InstanceType type, Register map);
 
   // Compare instance type for map.
@@ skipping 421 matching lines @@
   void PrepareCallApiFunction(int argc);
 
   // Calls an API function.  Allocates HandleScope, extracts returned value
   // from handle and propagates exceptions.  Clobbers ebx, edi and
   // caller-save registers.  Restores context.  On return removes
   // stack_space * kPointerSize (GCed).
   void CallApiFunctionAndReturn(Address function_address,
                                 Address thunk_address,
                                 Operand thunk_last_arg,
                                 int stack_space,
-                                Operand return_value_operand,
-                                Operand* context_restore_operand);
+                                int return_value_offset_from_ebp);
 
   // Jump to a runtime routine.
   void JumpToExternalReference(const ExternalReference& ext);
 
   // ---------------------------------------------------------------------------
   // Utilities
 
   void Ret();
 
   // Return and drop arguments from stack, where the number of arguments
@@ skipping 129 matching lines @@
                       Label* done,
                       bool* definitely_mismatches,
                       InvokeFlag flag,
                       Label::Distance done_distance,
                       const CallWrapper& call_wrapper = NullCallWrapper(),
                       CallKind call_kind = CALL_AS_METHOD);
 
   void EnterExitFramePrologue();
   void EnterExitFrameEpilogue(int argc, bool save_doubles);
 
-  void LeaveExitFrameEpilogue(bool restore_context);
+  void LeaveExitFrameEpilogue();
 
   // Allocation support helpers.
   void LoadAllocationTopHelper(Register result,
                                Register scratch,
                                AllocationFlags flags);
 
   void UpdateAllocationTopHelper(Register result_end,
                                  Register scratch,
                                  AllocationFlags flags);
 
@@ skipping 103 matching lines @@
   }                                                                       \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_MACRO_ASSEMBLER_IA32_H_