/* * Copyright (C) 2011 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. */ #ifndef DFGPredictionPropagationPhase_h #define DFGPredictionPropagationPhase_h #include <wtf/Platform.h> #if ENABLE(DFG_JIT) namespace JSC { namespace DFG { class Graph; // Propagate predictions gathered at heap load sites by the value profiler, and // from slow path executions, to generate a prediction for each node in the graph. // This is a crucial phase of compilation, since before running this phase, we // have no idea what types any node (or most variables) could possibly have, unless // that node is either a heap load, a call, a GetLocal for an argument, or an // arithmetic op that had definitely taken slow path. Most nodes (even most // arithmetic nodes) do not qualify for any of these categories. But after running // this phase, we'll have full information for the expected type of each node. void performPredictionPropagation(Graph&); } } // namespace JSC::DFG::Phase #endif // ENABLE(DFG_JIT) #endif // DFGPredictionPropagationPhase_h