mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-23 12:19:46 +00:00
65 lines
2.6 KiB
C++
65 lines
2.6 KiB
C++
/*
|
|
* Copyright (C) 2013, 2014 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(DFG_JIT)
|
|
|
|
#include "DFGBasicBlock.h"
|
|
|
|
namespace JSC { namespace DFG {
|
|
|
|
class Graph;
|
|
|
|
// Computes BasicBlock::ssa->availabilityAtHead/Tail. This is a forward flow type inference
|
|
// over MovHints and SetLocals. This analysis is run directly by the Plan for preparing for
|
|
// lowering to B3 IR, but it can also be used as a utility. Note that if you run it before
|
|
// stack layout, all of the flush availability will omit the virtual register - but it will
|
|
// tell you the format.
|
|
|
|
bool performOSRAvailabilityAnalysis(Graph&);
|
|
|
|
// Unlike the phase above this function doesn't mutate the graph's BasicBlock SSA metadata. Also, does nothing if !validationEnabled()
|
|
void validateOSRExitAvailability(Graph&);
|
|
|
|
// Local calculator for figuring out the availability at any node in a basic block. Requires
|
|
// having run the availability analysis.
|
|
class LocalOSRAvailabilityCalculator {
|
|
public:
|
|
LocalOSRAvailabilityCalculator(Graph&);
|
|
~LocalOSRAvailabilityCalculator();
|
|
|
|
void beginBlock(BasicBlock*);
|
|
void endBlock(BasicBlock*); // Useful if you want to get data for the end of the block. You don't need to call this if you did beginBlock() and then executeNode() for every node.
|
|
void executeNode(Node*);
|
|
|
|
AvailabilityMap m_availability;
|
|
Graph& m_graph;
|
|
};
|
|
|
|
} } // namespace JSC::DFG
|
|
|
|
#endif // ENABLE(DFG_JIT)
|