[compiler] Make SFI "optimize" flag a "tier up" flag

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 1457 matching lines @@
   __ Cmp(index, Operand(1));
   __ B(gt, &loop_top);
 
   // We found neither literals nor code.
   __ B(&gotta_call_runtime);
 
   __ Bind(&try_shared);
   __ Ldr(entry,
          FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));
   // Is the shared function marked for optimization?
-  __ Ldrb(temp,
-          FieldMemOperand(
-              entry, SharedFunctionInfo::kWasMarkedForOptimizationByteOffset));
+  __ Ldrb(temp, FieldMemOperand(
+                    entry, SharedFunctionInfo::kWasMarkedForTierUpByteOffset));
   __ TestAndBranchIfAnySet(
-      temp, 1 << SharedFunctionInfo::kWasMarkedForOptimizationBitWithinByte,
+      temp, 1 << SharedFunctionInfo::kWasMarkedForTierUpBitWithinByte,
       &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));
@@ skipping 1519 matching lines @@
     __ Unreachable();
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM