[ptr-compr][arm64] Fix accesses to CodeDataContainer::kind_specific_flags

This field's size is kIntSize but it was read as a 8-byte value in
assembly code.

Bug: v8:7703
Change-Id: I16e8c845c27b224b368c8888073cff6d53f28a54
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1532324
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60377}

src/builtins/arm64/builtins-arm64.cc

@@ -1064,10 +1064,10 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm,
         scratch2,
         FieldMemOperand(optimized_code_entry, Code::kCodeDataContainerOffset));
     __ Ldr(
-        scratch2,
+        scratch2.W(),
         FieldMemOperand(scratch2, CodeDataContainer::kKindSpecificFlagsOffset));
-    __ TestAndBranchIfAnySet(scratch2, 1 << Code::kMarkedForDeoptimizationBit,
-                             &found_deoptimized_code);
+    __ Tbnz(scratch2.W(), Code::kMarkedForDeoptimizationBit,
+            &found_deoptimized_code);
 
     // Optimized code is good, get it into the closure and link the closure into
     // the optimized functions list, then tail call the optimized code.

src/compiler/backend/arm64/code-generator-arm64.cc

@@ -567,10 +567,10 @@ void CodeGenerator::BailoutIfDeoptimized() {
   int offset = Code::kCodeDataContainerOffset - Code::kHeaderSize;
   __ LoadTaggedPointerField(
       scratch, MemOperand(kJavaScriptCallCodeStartRegister, offset));
-  __ Ldr(scratch,
+  __ Ldr(scratch.W(),
          FieldMemOperand(scratch, CodeDataContainer::kKindSpecificFlagsOffset));
   Label not_deoptimized;
-  __ Tbz(scratch, Code::kMarkedForDeoptimizationBit, &not_deoptimized);
+  __ Tbz(scratch.W(), Code::kMarkedForDeoptimizationBit, &not_deoptimized);
   __ Jump(BUILTIN_CODE(isolate(), CompileLazyDeoptimizedCode),
           RelocInfo::CODE_TARGET);
   __ Bind(&not_deoptimized);