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/*
* Copyright (C) 2015-2016 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.
*/
#include "config.h"
#include "B3ControlValue.h"
#if ENABLE(B3_JIT)
#include "B3BasicBlock.h"
namespace JSC { namespace B3 {
ControlValue::~ControlValue()
{
}
bool ControlValue::replaceSuccessor(BasicBlock* from, BasicBlock* to)
{
bool result = false;
for (FrequentedBlock& successor : m_successors) {
if (successor.block() == from) {
successor.block() = to;
result = true;
// Keep looping because it's valid for a successor to be mentioned multiple times,
// like if multiple switch cases have the same target.
}
}
return result;
}
void ControlValue::convertToJump(BasicBlock* destination)
{
unsigned index = this->index();
Origin origin = this->origin();
BasicBlock* owner = this->owner;
this->~ControlValue();
new (this) ControlValue(Jump, origin, FrequentedBlock(destination));
this->owner = owner;
this->m_index = index;
}
void ControlValue::convertToOops()
{
unsigned index = this->index();
Origin origin = this->origin();
BasicBlock* owner = this->owner;
this->~ControlValue();
new (this) ControlValue(Oops, origin);
this->owner = owner;
this->m_index = index;
}
void ControlValue::dumpMeta(CommaPrinter& comma, PrintStream& out) const
{
for (FrequentedBlock successor : m_successors)
out.print(comma, successor);
}
Value* ControlValue::cloneImpl() const
{
return new ControlValue(*this);
}
} } // namespace JSC::B3
#endif // ENABLE(B3_JIT)
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