Add new relocation type WASM_MEMORY_SIZE_REFERENCE, use relocatable pointers to update wasm 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 93aa8d4dfa7e61b247418658ce7a4df2f05e17da..56cbbc807937291a6c55b0da5922bdaf83575850 100644
--- a/src/compiler/x64/code-generator-x64.cc
+++ b/src/compiler/x64/code-generator-x64.cc
@@ -44,6 +44,10 @@ class X64OperandConverter : public InstructionOperandConverter {
       DCHECK_EQ(0, bit_cast<int64_t>(constant.ToFloat64()));
       return Immediate(0);
     }
+    if (constant.rmode() == RelocInfo::WASM_MEMORY_REFERENCE ||
+        constant.rmode() == RelocInfo::WASM_MEMORY_SIZE_REFERENCE) {
+      return Immediate(constant.ToInt32(), constant.rmode());
+    }
     return Immediate(constant.ToInt32());
   }