Split some SharedFunctionInfo's compiler hints off into debugger hints.

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 984 matching lines @@
   // the frame (that is done below).
   FrameScope frame_scope(masm, StackFrame::MANUAL);
   __ PushStandardFrame(r1);
 
   // Get the bytecode array from the function object (or from the DebugInfo if
   // it is present) and load it into kInterpreterBytecodeArrayRegister.
   __ ldr(r0, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset));
   Register debug_info = kInterpreterBytecodeArrayRegister;
   DCHECK(!debug_info.is(r0));
   __ ldr(debug_info, FieldMemOperand(r0, SharedFunctionInfo::kDebugInfoOffset));
-  __ cmp(debug_info, Operand(DebugInfo::uninitialized()));
+  __ SmiTst(debug_info);
   // Load original bytecode array or the debug copy.
   __ ldr(kInterpreterBytecodeArrayRegister,
          FieldMemOperand(r0, SharedFunctionInfo::kFunctionDataOffset), eq);
   __ ldr(kInterpreterBytecodeArrayRegister,
          FieldMemOperand(debug_info, DebugInfo::kDebugBytecodeArrayIndex), ne);
 
   // Check whether we should continue to use the interpreter.
   Label switch_to_different_code_kind;
   __ ldr(r0, FieldMemOperand(r0, SharedFunctionInfo::kCodeOffset));
   __ cmp(r0, Operand(masm->CodeObject()));  // Self-reference to this code.
@@ skipping 2014 matching lines @@
     __ bkpt(0);
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM