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/*
* Copyright (C) 2015-2020 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
<
wtf/Platform.h
>
#
if
ENABLE(B3_JIT)
#
include
<
JavaScriptCore/CPU.h
>
#
include
<
JavaScriptCore/GPRInfo.h
>
#
include
<
JavaScriptCore/JSExportMacros.h
>
#
include
<
JavaScriptCore/Options.h
>
#
include
<
wtf/StdLibExtras.h
>
#
include
<
wtf/text/ASCIILiteral.h
>
namespace
JSC
{
namespace
B3
{
class
Procedure
;
inline
constexpr
ASCIILiteral tierName {
"
b3
"
_s };
enum
B3CompilationMode {
B3Mode,
AirMode
};
JS_EXPORT_PRIVATE
bool
NODELETE
shouldDumpIR
(Procedure&, B3CompilationMode);
bool
NODELETE
shouldDumpIRAtEachPhase
(B3CompilationMode);
bool
NODELETE
shouldValidateIR
();
bool
NODELETE
shouldValidateIRAtEachPhase
();
bool
NODELETE
shouldSaveIRBeforePhase
();
template
<
typename
IntType>
IntType
chillDiv
(IntType numerator, IntType denominator)
{
if
(!denominator)
return
0
;
if
(denominator == -
1
&& numerator == std::numeric_limits<IntType>::
min
())
return
std::numeric_limits<IntType>::
min
();
return
numerator / denominator;
}
template
<
typename
IntType>
IntType
chillMod
(IntType numerator, IntType denominator)
{
if
(!denominator)
return
0
;
if
(denominator == -
1
&& numerator == std::numeric_limits<IntType>::
min
())
return
0
;
return
numerator % denominator;
}
template
<
typename
IntType>
IntType
chillUDiv
(IntType numerator, IntType denominator)
{
auto
unsignedNumerator =
unsignedCast
(numerator);
auto
unsignedDenominator =
unsignedCast
(denominator);
if
(!unsignedDenominator)
return
0
;
return
unsignedNumerator / unsignedDenominator;
}
template
<
typename
IntType>
IntType
chillUMod
(IntType numerator, IntType denominator)
{
auto
unsignedNumerator =
unsignedCast
(numerator);
auto
unsignedDenominator =
unsignedCast
(denominator);
if
(!unsignedDenominator)
return
0
;
return
unsignedNumerator % unsignedDenominator;
}
template
<
typename
IntType>
IntType
rotateRight
(IntType value,
int32_t
shift)
{
auto
uValue =
unsignedCast
(value);
int32_t
bits =
sizeof
(IntType) *
8
;
int32_t
mask = bits -
1
;
shift &= mask;
return
(uValue >> shift) | (uValue << ((bits - shift) & mask));
}
template
<
typename
IntType>
IntType
rotateLeft
(IntType value,
int32_t
shift)
{
auto
uValue =
unsignedCast
(value);
int32_t
bits =
sizeof
(IntType) *
8
;
int32_t
mask = bits -
1
;
shift &= mask;
return
(uValue << shift) | (uValue >> ((bits - shift) & mask));
}
inline
unsigned
defaultOptLevel
()
{
//
This should almost always return 2, but we allow this default to be lowered for testing. Some
//
components will deliberately set the optLevel.
return
Options::defaultB3OptLevel
();
}
GPRReg
NODELETE
extendedOffsetAddrRegister
();
} }
//
namespace JSC::B3
#
endif
//
ENABLE(B3_JIT)
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