Add new relocation type WASM_MEMORY_SIZE_REFERENCE, use relocatable pointers to update wasm memory …

src/x64/assembler-x64.cc

Index: src/x64/assembler-x64.cc
diff --git a/src/x64/assembler-x64.cc b/src/x64/assembler-x64.cc
index fef973f2d8a760a1319263e9c041507d269e2232..4e17eebd5ceb823b5108dfc4228531c4a9d739bf 100644
--- a/src/x64/assembler-x64.cc
+++ b/src/x64/assembler-x64.cc
@@ -563,14 +563,17 @@ void Assembler::immediate_arithmetic_op(byte subcode,
   if (is_int8(src.value_)) {
     emit(0x83);
     emit_modrm(subcode, dst);
+    if (!RelocInfo::IsNone(src.rmode_)) {
+      RecordRelocInfo(src.rmode_);
+    }
     emit(src.value_);
   } else if (dst.is(rax)) {
     emit(0x05 | (subcode << 3));
-    emitl(src.value_);
+    emit(src);
   } else {
     emit(0x81);
     emit_modrm(subcode, dst);
-    emitl(src.value_);
+    emit(src);
   }
 }
 
@@ -583,11 +586,14 @@ void Assembler::immediate_arithmetic_op(byte subcode,
   if (is_int8(src.value_)) {
     emit(0x83);
     emit_operand(subcode, dst);
+    if (!RelocInfo::IsNone(src.rmode_)) {
+      RecordRelocInfo(src.rmode_);
+    }
     emit(src.value_);
   } else {
     emit(0x81);
     emit_operand(subcode, dst);
-    emitl(src.value_);
+    emit(src);
   }
 }