provides a mechanism for optimizing compilers to select the different Register configuration.

src/ia32/deoptimizer-ia32.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_IA32
 
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
 #include "src/ia32/frames-ia32.h"
@@ skipping 218 matching lines @@
 #define __ masm()->
 
 void Deoptimizer::TableEntryGenerator::Generate() {
   GeneratePrologue();
 
   // Save all general purpose registers before messing with them.
   const int kNumberOfRegisters = Register::kNumRegisters;
 
   const int kDoubleRegsSize = kDoubleSize * XMMRegister::kMaxNumRegisters;
   __ sub(esp, Immediate(kDoubleRegsSize));
-  const RegisterConfiguration* config = RegisterConfiguration::ArchDefault();
+  const RegisterConfiguration* config =
+      RegisterConfiguration::ArchDefault(RegisterConfiguration::CRANKSHAFT);
   for (int i = 0; i < config->num_allocatable_double_registers(); ++i) {
     int code = config->GetAllocatableDoubleCode(i);
     XMMRegister xmm_reg = XMMRegister::from_code(code);
     int offset = code * kDoubleSize;
     __ movsd(Operand(esp, offset), xmm_reg);
   }
 
   __ pushad();
 
   ExternalReference c_entry_fp_address(Isolate::kCEntryFPAddress, isolate());
@@ skipping 181 matching lines @@
 }
 
 
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32