v8/src/x64/register-allocator-x64.h
erik.corry@gmail.com 369214c159 Use a root array register for constant loads and stack guards on x64.
This only wins us around 1% in performance, but it makes the code more
compact.  We don't currently have a way to represent in the virtual
frame that a slot contains a value from the root array.  Adding this
would probably make the code more compact.
Review URL: http://codereview.chromium.org/174639

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2783 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2009-08-31 08:57:36 +00:00

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1.9 KiB
C++

// Copyright 2009 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
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// disclaimer in the documentation and/or other materials provided
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// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
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//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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#ifndef V8_X64_REGISTER_ALLOCATOR_X64_H_
#define V8_X64_REGISTER_ALLOCATOR_X64_H_
namespace v8 {
namespace internal {
class RegisterAllocatorConstants : public AllStatic {
public:
static const int kNumRegisters = 11;
static const int kInvalidRegister = -1;
};
} } // namespace v8::internal
#endif // V8_X64_REGISTER_ALLOCATOR_X64_H_