Assembler changes for enabling GrowHeap in Wasm

src/x64/macro-assembler-x64.h

Index: src/x64/macro-assembler-x64.h
diff --git a/src/x64/macro-assembler-x64.h b/src/x64/macro-assembler-x64.h
index 9c0b7964b3441f4c575989ee4aae10bcf7ba9965..be9acb86f963c4de3db0a6221f555b2123cda91f 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -806,6 +806,7 @@ class MacroAssembler: public Assembler {
 
   // Load a register with a long value as efficiently as possible.
   void Set(Register dst, int64_t x);
+  void Set(Register dst, int64_t x, RelocInfo::Mode rmode);
   void Set(const Operand& dst, intptr_t x);
 
   void Cvtss2sd(XMMRegister dst, XMMRegister src);