[wasm] Fix bounds check for zero initial memory.

src/compiler/x64/code-generator-x64.cc

Index: src/compiler/x64/code-generator-x64.cc
diff --git a/src/compiler/x64/code-generator-x64.cc b/src/compiler/x64/code-generator-x64.cc
index 4d63e9ad8355479b6f2f95d2351b9b91df14acf5..a005944f20fb232883393b889c92f7476347ebbe 100644
--- a/src/compiler/x64/code-generator-x64.cc
+++ b/src/compiler/x64/code-generator-x64.cc
@@ -42,7 +42,7 @@ class X64OperandConverter : public InstructionOperandConverter {
       return Immediate(0);
     }
     if (constant.rmode() == RelocInfo::WASM_MEMORY_REFERENCE ||
-        constant.rmode() == RelocInfo::WASM_MEMORY_SIZE_REFERENCE ||
+        RelocInfo::IsWasmMemorySizeReference(constant.rmode()) ||
         constant.rmode() == RelocInfo::WASM_GLOBAL_REFERENCE) {
       return Immediate(constant.ToInt32(), constant.rmode());
     }
@@ -2507,7 +2507,7 @@ void CodeGenerator::AssembleMove(InstructionOperand* source,
             if (value == 0) {
               __ xorl(dst, dst);
             } else {
-              if (src.rmode() == RelocInfo::WASM_MEMORY_SIZE_REFERENCE) {
+              if (RelocInfo::IsWasmMemorySizeReference(src.rmode())) {
                 __ movl(dst, Immediate(value, src.rmode()));
               } else {
                 __ movl(dst, Immediate(value));
@@ -2521,7 +2521,7 @@ void CodeGenerator::AssembleMove(InstructionOperand* source,
               src.rmode() == RelocInfo::WASM_GLOBAL_REFERENCE) {
             __ movq(dst, src.ToInt64(), src.rmode());
           } else {
-            DCHECK(src.rmode() != RelocInfo::WASM_MEMORY_SIZE_REFERENCE);
+            DCHECK(!RelocInfo::IsWasmMemorySizeReference(src.rmode()));
             __ Set(dst, src.ToInt64());
           }
           break;