Remember all deopt reasons in ic_data, not just the last one.

runtime/vm/intermediate_language.cc

 // Copyright (c) 2013, 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.
 
 #include "vm/intermediate_language.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/bit_vector.h"
 #include "vm/cpu.h"
 #include "vm/dart_entry.h"
@@ skipping 73 matching lines @@
 
 
 CheckClassInstr::CheckClassInstr(Value* value,
                                  intptr_t deopt_id,
                                  const ICData& unary_checks)
     : unary_checks_(unary_checks), licm_hoisted_(false) {
   ASSERT(unary_checks.IsZoneHandle());
   // Expected useful check data.
   ASSERT(!unary_checks_.IsNull());
   ASSERT(unary_checks_.NumberOfChecks() > 0);
-  ASSERT(unary_checks_.num_args_tested() == 1);
+  ASSERT(unary_checks_.NumArgsTested() == 1);
   SetInputAt(0, value);
   deopt_id_ = deopt_id;
   // Otherwise use CheckSmiInstr.
   ASSERT((unary_checks_.NumberOfChecks() != 1) ||
          (unary_checks_.GetReceiverClassIdAt(0) != kSmiCid));
 }
 
 
 bool CheckClassInstr::AttributesEqual(Instruction* other) const {
   CheckClassInstr* other_check = other->AsCheckClass();
@@ skipping 3212 matching lines @@
     case Token::kTRUNCDIV: return 0;
     case Token::kMOD: return 1;
     default: UNIMPLEMENTED(); return -1;
   }
 }
 
 
 #undef __
 
 }  // namespace dart