Introduce x87 port

src/x87/lithium-gap-resolver-x87.h

 // Copyright 2011 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.
 
-#ifndef V8_IA32_LITHIUM_GAP_RESOLVER_IA32_H_
-#define V8_IA32_LITHIUM_GAP_RESOLVER_IA32_H_
+#ifndef V8_X87_LITHIUM_GAP_RESOLVER_X87_H_
+#define V8_X87_LITHIUM_GAP_RESOLVER_X87_H_
 
 #include "v8.h"
 
 #include "lithium.h"
 
 namespace v8 {
 namespace internal {
 
 class LCodeGen;
 class LGapResolver;
@@ skipping 60 matching lines @@
   int source_uses_[Register::kMaxNumAllocatableRegisters];
   int destination_uses_[Register::kMaxNumAllocatableRegisters];
 
   // If we had to spill on demand, the currently spilled register's
   // allocation index.
   int spilled_register_;
 };
 
 } }  // namespace v8::internal
 
-#endif  // V8_IA32_LITHIUM_GAP_RESOLVER_IA32_H_
+#endif  // V8_X87_LITHIUM_GAP_RESOLVER_X87_H_