Proper reg for deoptiomization.

runtime/vm/opt_code_generator_ia32.cc

 // 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.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/opt_code_generator.h"
 
 #include "vm/assembler_macros.h"
@@ skipping 639 matching lines @@
       (kind == Token::kBIT_AND) ||
       (kind == Token::kBIT_OR) ||
       (kind == Token::kBIT_XOR)) {
     TraceOpt(node, kOptMessage);
     CodeGenInfo left_info(node->left());
     CodeGenInfo right_info(node->right());
     VisitLoadTwo(node->left(), node->right(), EAX, EDX);
     Label* overflow_label = NULL;
     Label two_smis, call_operator;
     if (left_info.IsClass(smi_class_) || right_info.IsClass(smi_class_)) {
-      DeoptimizationBlob* deopt_blob = AddDeoptimizationBlob(node, EAX, EDX);
+      DeoptimizationBlob* deopt_blob = AddDeoptimizationBlob(node, ECX, EDX);
       overflow_label = deopt_blob->label();
       __ movl(ECX, EAX);  // Save if overflow (needs original value).
       if (!left_info.IsClass(smi_class_) || !right_info.IsClass(smi_class_)) {
         Register test_reg = left_info.IsClass(smi_class_) ? EDX : EAX;
         __ testl(test_reg, Immediate(kSmiTagMask));
         __ j(NOT_ZERO, deopt_blob->label());
       }
       if (node->info() != NULL) {
         node->info()->set_is_class(&smi_class_);
       }
@@ skipping 1600 matching lines @@
   __ addl(ESP, Immediate(node->arguments()->length() * kWordSize));
   // Result is in EAX.
   if (IsResultNeeded(node)) {
     __ pushl(EAX);
   }
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32