Assembler changes for enabling GrowHeap in Wasm

src/x64/macro-assembler-x64.cc

Index: src/x64/macro-assembler-x64.cc
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index 81017b39e17fe6499400ddb37e0c495582a0e3d0..fa6c710c279c3e0821766204958224c27c0bedd4 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -1114,6 +1114,14 @@ void MacroAssembler::Set(Register dst, int64_t x) {
   }
 }
 
+void MacroAssembler::Set(Register dst, int64_t x, RelocInfo::Mode rmode) {
+  if (rmode == RelocInfo::WASM_MEMORY_REFERENCE) {
+    DCHECK(x != 0);
+    movq(dst, x, rmode);
+  } else {
+    DCHECK(RelocInfo::IsNone(rmode));
+  }
+}
 
 void MacroAssembler::Set(const Operand& dst, intptr_t x) {
   if (kPointerSize == kInt64Size) {