blob: 2ac764ff2c7165d2257db45151be743028524546 [file] [log] [blame]
/*
* Copyright (C) 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.
*/
#pragma once
#include "DOMJITHeapRange.h"
namespace JSC { namespace DOMJIT {
struct Effect {
#if !COMPILER_SUPPORTS(NSDMI_FOR_AGGREGATES)
constexpr Effect() = default;
constexpr Effect(HeapRange reads, HeapRange writes)
: reads { reads }
, writes { writes }
{
}
constexpr Effect(HeapRange reads, HeapRange writes, HeapRange def)
: reads { reads }
, writes { writes }
, def { def }
{
}
#endif
constexpr static Effect forWrite(HeapRange writeRange)
{
return { HeapRange::none(), writeRange };
}
constexpr static Effect forRead(HeapRange readRange)
{
return { readRange, HeapRange::none() };
}
constexpr static Effect forReadWrite(HeapRange readRange, HeapRange writeRange)
{
return { readRange, writeRange };
}
constexpr static Effect forPure()
{
return { HeapRange::none(), HeapRange::none(), HeapRange::none() };
}
constexpr static Effect forDef(HeapRange def)
{
return { def, HeapRange::none(), def };
}
constexpr static Effect forDef(HeapRange def, HeapRange readRange, HeapRange writeRange)
{
return { readRange, writeRange, def };
}
constexpr bool mustGenerate() const
{
return !!writes;
}
HeapRange reads { HeapRange::top() };
HeapRange writes { HeapRange::top() };
HeapRange def { HeapRange::top() };
};
} }