/* * Copyright (C) 2015-2017 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #pragma once #if ENABLE(B3_JIT) #include "CPU.h" #include "Options.h" namespace JSC { namespace B3 { namespace Air { class Code; inline bool useIRC() { return Options::airForceIRCAllocator() || (!isARM64() && !Options::airForceBriggsAllocator()); } // We have two register allocators, both fundamentally derived from Chaitin's Yorktown // allocator: // http://cs.gmu.edu/~white/CS640/p98-chaitin.pdf // // We have an implementation of Briggs's optimistic allocator which is derivative of Chaitin's allocator: // http://www.cs.utexas.edu/users/mckinley/380C/lecs/briggs-thesis-1992.pdf // // And an implementation of Andrew Appel's Iterated Register Coalescing which is derivative of Briggs's allocator. // http://www.cs.cmu.edu/afs/cs/academic/class/15745-s07/www/papers/george.pdf void allocateRegistersByGraphColoring(Code&); } } } // namespace JSC::B3::Air #endif // ENABLE(B3_JIT)