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 ac5ea8f6ca9448585b1352475e885067408485e2..0982effd370465366e0af608e86232bb342750fb 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);