WebKit merge 41447:41498 [third_party/WebKit]

third_party/WebKit/JavaScriptCore/assembler/MacroAssemblerX86_64.h

 /*
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 226 matching lines @@
         m_assembler.movq_rm(src, address.offset, address.base);
     }
 
     void storePtr(RegisterID src, BaseIndex address)
     {
         m_assembler.movq_rm(src, address.offset, address.base, address.index, address.scale);
     }
 
     void storePtr(ImmPtr imm, ImplicitAddress address)
     {
-        move(imm, scratchRegister);
-        storePtr(scratchRegister, address);
+        intptr_t ptr = imm.asIntptr();
+        if (CAN_SIGN_EXTEND_32_64(ptr))
+            m_assembler.movq_i32m(static_cast<int>(ptr), address.offset, address.base);
+        else {
+            move(imm, scratchRegister);
+            storePtr(scratchRegister, address);
+        }
     }
 
     DataLabel32 storePtrWithAddressOffsetPatch(RegisterID src, Address address)
     {
         m_assembler.movq_rm_disp32(src, address.offset, address.base);
         return DataLabel32(this);
     }
 
     void setPtr(Condition cond, RegisterID left, Imm32 right, RegisterID dest)
     {
@@ skipping 125 matching lines @@
         storePtr(scratchRegister, address);
         return label;
     }
 };
 
 } // namespace JSC
 
 #endif // ENABLE(ASSEMBLER)
 
 #endif // MacroAssemblerX86_64_h