Assembler changes for enabling GrowHeap in Wasm

src/x64/macro-assembler-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 1096 matching lines @@
     xorl(dst, dst);
   } else if (is_uint32(x)) {
     movl(dst, Immediate(static_cast<uint32_t>(x)));
   } else if (is_int32(x)) {
     movq(dst, Immediate(static_cast<int32_t>(x)));
   } else {
     movq(dst, 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) {
     if (is_int32(x)) {
       movp(dst, Immediate(static_cast<int32_t>(x)));
     } else {
       Set(kScratchRegister, x);
       movp(dst, kScratchRegister);
     }
   } else {
@@ skipping 4537 matching lines @@
   movl(rax, dividend);
   shrl(rax, Immediate(31));
   addl(rdx, rax);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64