Specialize breakpoint stubs by set of live registers of the stubs they are intercepting.

runtime/vm/stub_code.h

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_STUB_CODE_H_
 #define VM_STUB_CODE_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 
@@ skipping 11 matching lines @@
 #define VM_STUB_CODE_LIST(V)                                                   \
   V(PrintStopMessage)                                                          \
   V(CallToRuntime)                                                             \
   V(LazyCompile)                                                               \
   V(CallBootstrapCFunction)                                                    \
   V(CallNativeCFunction)                                                       \
   V(CallStaticFunction)                                                        \
   V(FixCallersTarget)                                                          \
   V(Deoptimize)                                                                \
   V(DeoptimizeLazy)                                                            \
-  V(BreakpointRuntime)                                                         \
+  V(ICCallBreakpoint)                                                          \
+  V(ClosureCallBreakpoint)                                                     \
+  V(RuntimeCallBreakpoint)                                                     \
   V(DebugStepCheck)                                                            \
   V(Subtype1TestCache)                                                         \
   V(Subtype2TestCache)                                                         \
   V(Subtype3TestCache)                                                         \
   V(GetStackPointer)                                                           \
   V(JumpToExceptionHandler)                                                    \
   V(UnoptimizedIdenticalWithNumberCheck)                                       \
   V(OptimizedIdenticalWithNumberCheck)                                         \
 
 // Is it permitted for the stubs above to refer to Object::null(), which is
@@ skipping 160 matching lines @@
       Assembler* assembler,
       const Register left,
       const Register right,
       const Register temp1 = kNoRegister,
       const Register temp2 = kNoRegister);
 };
 
 }  // namespace dart
 
 #endif  // VM_STUB_CODE_H_