[compiler] Mark shared functions for optimization

src/builtins/arm64/builtins-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/arm64/frames-arm64.h"
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
@@ skipping 1454 matching lines @@
 
   __ Bind(&loop_bottom);
   __ Sub(index, index, Operand(SharedFunctionInfo::kEntryLength));
   __ Cmp(index, Operand(1));
   __ B(gt, &loop_top);
 
   // We found neither literals nor code.
   __ B(&gotta_call_runtime);
 
   __ Bind(&try_shared);
-  // Is the full code valid?
   __ Ldr(entry,
          FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));
+  // Is the shared function marked for optimization?
+  __ Ldrb(temp,
+          FieldMemOperand(
+              entry, SharedFunctionInfo::kWasMarkedForOptimizationByteOffset));
+  __ TestAndBranchIfAnySet(
+      temp, 1 << SharedFunctionInfo::kWasMarkedForOptimizationBitWithinByte,
+      &gotta_call_runtime);
+  // Is the full code valid?
   __ Ldr(entry, FieldMemOperand(entry, SharedFunctionInfo::kCodeOffset));
   __ Ldr(x5, FieldMemOperand(entry, Code::kFlagsOffset));
   __ and_(x5, x5, Operand(Code::KindField::kMask));
   __ Mov(x5, Operand(x5, LSR, Code::KindField::kShift));
   __ Cmp(x5, Operand(Code::BUILTIN));
   __ B(eq, &gotta_call_runtime);
   // Yes, install the full code.
   __ Add(entry, entry, Operand(Code::kHeaderSize - kHeapObjectTag));
   __ Str(entry, FieldMemOperand(closure, JSFunction::kCodeEntryOffset));
   __ RecordWriteCodeEntryField(closure, entry, x5);
@@ skipping 1517 matching lines @@
     __ Unreachable();
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM