1d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// Copyright 2013 the V8 project authors. All rights reserved. 2d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// Redistribution and use in source and binary forms, with or without 3d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// modification, are permitted provided that the following conditions are 4d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// met: 5d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// 6d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// * Redistributions of source code must retain the above copyright 7d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// notice, this list of conditions and the following disclaimer. 8d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// * Redistributions in binary form must reproduce the above 9d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// copyright notice, this list of conditions and the following 10d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// disclaimer in the documentation and/or other materials provided 11d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// with the distribution. 12d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// * Neither the name of Google Inc. nor the names of its 13d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// contributors may be used to endorse or promote products derived 14d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// from this software without specific prior written permission. 15d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// 16d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org 28d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org#ifndef V8_HYDROGEN_MARK_DEOPTIMIZE_H_ 29d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org#define V8_HYDROGEN_MARK_DEOPTIMIZE_H_ 30d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org 31d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org#include "hydrogen.h" 32d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org 33d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.orgnamespace v8 { 34d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.orgnamespace internal { 35d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org 36d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org 37d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// Compute DeoptimizeOnUndefined flag for phis. Any phi that can reach a use 38d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// with DeoptimizeOnUndefined set must have DeoptimizeOnUndefined set. 39d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// Currently only HCompareNumericAndBranch, with double input representation, 40d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// has this flag set. The flag is used by HChange tagged->double, which must 41d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org// deoptimize if one of its uses has this flag set. 42d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.orgclass HMarkDeoptimizeOnUndefinedPhase : public HPhase { 43d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org public: 44d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org explicit HMarkDeoptimizeOnUndefinedPhase(HGraph* graph) 45d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org : HPhase("H_Mark deoptimize on undefined", graph), 46d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org worklist_(16, zone()) {} 47d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org 48d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org void Run(); 49d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org 50d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org private: 51d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org void ProcessPhi(HPhi* phi); 52d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org 53d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org // Preallocated worklist used as an optimization so we don't have 54d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org // to allocate a new ZoneList for every ProcessPhi() invocation. 55d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org ZoneList<HPhi*> worklist_; 56d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org 57d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org DISALLOW_COPY_AND_ASSIGN(HMarkDeoptimizeOnUndefinedPhase); 58d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org}; 59d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org 60d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org 61c00ec2b94bc5505fa81f81daefd956f5a8776a09danno@chromium.orgclass HComputeChangeUndefinedToNaN : public HPhase { 62c00ec2b94bc5505fa81f81daefd956f5a8776a09danno@chromium.org public: 63c00ec2b94bc5505fa81f81daefd956f5a8776a09danno@chromium.org explicit HComputeChangeUndefinedToNaN(HGraph* graph) 64c00ec2b94bc5505fa81f81daefd956f5a8776a09danno@chromium.org : HPhase("H_Compute change undefined to nan", graph) {} 65c00ec2b94bc5505fa81f81daefd956f5a8776a09danno@chromium.org 66c00ec2b94bc5505fa81f81daefd956f5a8776a09danno@chromium.org void Run(); 67c00ec2b94bc5505fa81f81daefd956f5a8776a09danno@chromium.org 68c00ec2b94bc5505fa81f81daefd956f5a8776a09danno@chromium.org private: 69c00ec2b94bc5505fa81f81daefd956f5a8776a09danno@chromium.org DISALLOW_COPY_AND_ASSIGN(HComputeChangeUndefinedToNaN); 70c00ec2b94bc5505fa81f81daefd956f5a8776a09danno@chromium.org}; 71c00ec2b94bc5505fa81f81daefd956f5a8776a09danno@chromium.org 72c00ec2b94bc5505fa81f81daefd956f5a8776a09danno@chromium.org 73d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org} } // namespace v8::internal 74d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org 75d3c42109e5b85232d19beab8deeb24bdcbbf07f9danno@chromium.org#endif // V8_HYDROGEN_MARK_DEOPTIMIZE_H_ 76