[wasm] Fix bounds check for zero initial memory.

src/compiler/mips64/code-generator-mips64.cc

 // Copyright 2014 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.
 
 #include "src/compiler/code-generator.h"
 #include "src/compilation-info.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/osr.h"
@@ skipping 2326 matching lines @@
       __ ld(temp, src);
       __ sd(temp, g.ToMemOperand(destination));
     }
   } else if (source->IsConstant()) {
     Constant src = g.ToConstant(source);
     if (destination->IsRegister() || destination->IsStackSlot()) {
       Register dst =
           destination->IsRegister() ? g.ToRegister(destination) : kScratchReg;
       switch (src.type()) {
         case Constant::kInt32:
-          if (src.rmode() == RelocInfo::WASM_MEMORY_SIZE_REFERENCE) {
+          if (RelocInfo::IsWasmSizeReference(src.rmode())) {
             __ li(dst, Operand(src.ToInt32(), src.rmode()));
           } else {
             __ li(dst, Operand(src.ToInt32()));
           }
           break;
         case Constant::kFloat32:
           __ li(dst, isolate()->factory()->NewNumber(src.ToFloat32(), TENURED));
           break;
         case Constant::kInt64:
           if (src.rmode() == RelocInfo::WASM_MEMORY_REFERENCE ||
               src.rmode() == RelocInfo::WASM_GLOBAL_REFERENCE) {
             __ li(dst, Operand(src.ToInt64(), src.rmode()));
           } else {
-            DCHECK(src.rmode() != RelocInfo::WASM_MEMORY_SIZE_REFERENCE);
+            DCHECK(!RelocInfo::IsWasmReference(src.rmode()));
             __ li(dst, Operand(src.ToInt64()));
           }
           break;
         case Constant::kFloat64:
           __ li(dst, isolate()->factory()->NewNumber(src.ToFloat64(), TENURED));
           break;
         case Constant::kExternalReference:
           __ li(dst, Operand(src.ToExternalReference()));
           break;
         case Constant::kHeapObject: {
@@ skipping 153 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8