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/*
* Copyright (C) 2015 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(B3_JIT)
#include "B3ValueRep.h"
#include "B3Width.h"
#include "WasmCallingConvention.h"
namespace JSC { namespace B3 {
class Value;
#if ENABLE(WEBASSEMBLY)
struct ArgumentLocation {
ArgumentLocation(Wasm::ValueLocation loc, Width width)
: location(loc)
, width(width)
{
}
ArgumentLocation() { }
Wasm::ValueLocation location;
Width width;
};
#endif
class ConstrainedValue {
public:
ConstrainedValue()
{
}
ConstrainedValue(Value* value)
: m_value(value)
, m_rep(ValueRep::WarmAny)
{
}
ConstrainedValue(Value* value, const ValueRep& rep)
: m_value(value)
, m_rep(rep)
{
}
#if ENABLE(WEBASSEMBLY)
#if USE(JSVALUE32_64)
ConstrainedValue(Value* value, const Wasm::ArgumentLocation& loc)
: m_value(value)
{
if (loc.location.isGPR() && loc.usedWidth == Width32)
m_rep = B3::ValueRep(loc.location.jsr().payloadGPR());
else
m_rep = B3::ValueRep(loc.location);
}
#else
ConstrainedValue(Value* value, const Wasm::ArgumentLocation& loc)
: m_value(value)
, m_rep(loc.location)
{
}
#endif // USE(JSVALUE32_64)
#endif // ENABLE(WEBASSEMBLY)
explicit operator bool() const { return m_value || m_rep; }
Value* value() const { return m_value; }
const ValueRep& rep() const { return m_rep; }
void dump(PrintStream& out) const;
private:
Value* m_value;
ValueRep m_rep;
};
} } // namespace JSC::B3
#endif // ENABLE(B3_JIT)
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