WebKit/Source/JavaScriptCore/b3/air/AirOptimizeBlockOrder.h at main · WebKit/WebKit

Repository navigation

* 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 <wtf/Vector.h>

namespace JSC { namespace B3 { namespace Air {

class BasicBlock;

class Code;

// Returns a list of blocks sorted according to what would be the current optimal order. This shares

// some properties with a pre-order traversal. In particular, each block will appear after at least

// one of its predecessors.

Vector<BasicBlock*> blocksInOptimizedOrder(Code&);

// Reorders the basic blocks to keep hot blocks at the top, and maximize the likelihood that a frequently

// taken edge is just a fall-through.

void optimizeBlockOrder(Code&);

} } } // namespace JSC::B3::Air

#endif // ENABLE(B3_JIT)