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..424115725b9e10757a37e07975e22a7e00a30a3e 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -1114,6 +1114,18 @@ 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 if (is_uint32(x)) {
+    movl(dst, Immediate(static_cast<int32_t>(x), rmode));

[titzer, 2016/03/14 15:23:38]

You probably want to DCHECK that there is no relocation mode in this case?

[gdeepti1, 2016/03/14 20:08:14]

Done.

+  } else if (is_int32(x)) {
+    movq(dst, Immediate(static_cast<int32_t>(x), rmode));
+  } else {
+    movq(dst, x, rmode);
+  }
+}
 
 void MacroAssembler::Set(const Operand& dst, intptr_t x) {
   if (kPointerSize == kInt64Size) {