A64: Fix LWrapReceiver for strict mode

src/a64/lithium-codegen-a64.cc

Index: src/a64/lithium-codegen-a64.cc
diff --git a/src/a64/lithium-codegen-a64.cc b/src/a64/lithium-codegen-a64.cc
index 7040946732f628069a0318d8d553981189084f84..af06bf5b751b789ed0d0a53737749e2f5bda9137 100644
--- a/src/a64/lithium-codegen-a64.cc
+++ b/src/a64/lithium-codegen-a64.cc
@@ -5384,12 +5384,14 @@ void LCodeGen::DoWrapReceiver(LWrapReceiver* instr) {
   // builtins and strict-mode functions.
   Label global_object, done, deopt;
 
-  // Do not transform the receiver to object for strict mode functions.
   __ Ldr(temp, FieldMemOperand(function,
                                JSFunction::kSharedFunctionInfoOffset));
-  __ Ldr(temp,
-         UntagSmiFieldMemOperand(temp,
-                                 SharedFunctionInfo::kCompilerHintsOffset));
+
+  // CompilerHints is an int32 field. See objects.h.
+  __ Ldr(temp.W(),
+         FieldMemOperand(temp, SharedFunctionInfo::kCompilerHintsOffset));
+
+  // Do not transform the receiver to object for strict mode functions.
   __ Tbnz(temp, SharedFunctionInfo::kStrictModeFunction, &done);
 
   // Do not transform the receiver to object for builtins.