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

src/builtins/arm/builtins-arm.cc

 // Copyright 2012 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_ARM
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 1464 matching lines @@
 
   // We found neither literals nor code.
   __ jmp(&gotta_call_runtime);
 
   __ bind(&try_shared);
   __ pop(closure);
   __ pop(new_target);
   __ pop(argument_count);
   __ ldr(entry,
          FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));
   // Is the shared function marked for optimization?

[rmcilroy, 2016/10/26 15:07:59]

update comment (throughtout)

[Leszek Swirski, 2016/10/27 09:40:20]

Done.

-  __ ldrb(r5,
-          FieldMemOperand(
-              entry, SharedFunctionInfo::kWasMarkedForOptimizationByteOffset));
-  __ tst(
-      r5,
-      Operand(1 << SharedFunctionInfo::kWasMarkedForOptimizationBitWithinByte));
+  __ ldrb(r5, FieldMemOperand(
+                  entry, SharedFunctionInfo::kWasMarkedForTierUpByteOffset));
+  __ tst(r5,
+         Operand(1 << SharedFunctionInfo::kWasMarkedForTierUpBitWithinByte));
   __ b(eq, &gotta_call_runtime_no_stack);
   // Is the full code valid?
   __ ldr(entry, FieldMemOperand(entry, SharedFunctionInfo::kCodeOffset));
   __ ldr(r5, FieldMemOperand(entry, Code::kFlagsOffset));
   __ and_(r5, r5, Operand(Code::KindField::kMask));
   __ mov(r5, Operand(r5, LSR, Code::KindField::kShift));
   __ cmp(r5, Operand(Code::BUILTIN));
   __ b(eq, &gotta_call_runtime_no_stack);
   // Yes, install the full code.
   __ add(entry, entry, Operand(Code::kHeaderSize - kHeapObjectTag));
@@ skipping 1413 matching lines @@
     __ bkpt(0);
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM