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 b1990bac031d642b97d2fd2cce7065562062b8e1..039ad8c5c1cefec084e743e846be529f34dbee4d 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -818,6 +818,7 @@ 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);