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B3Effects.cpp
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B3Effects.cpp
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/*
* Copyright (C) 2015-2017 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
"
B3Effects.h
"
#
if
ENABLE(B3_JIT)
#
include
<
wtf/CommaPrinter.h
>
namespace
JSC
{
namespace
B3
{
namespace
{
//
These helpers cascade in such a way that after the helper for terminal, we don't have to worry
//
about terminal again, since the terminal case considers all ways that a terminal may interfere
//
with something else. And after the exit sideways case, we don't have to worry about either
//
exitsSideways or terminal. And so on...
bool
NODELETE
interferesWithTerminal
(
const
Effects& terminal,
const
Effects& other)
{
if
(!terminal.
terminal
)
return
false
;
return
other.
terminal
|| other.
controlDependent
|| other.
writesLocalState
|| other.
writes
|| other.
writesPinned
;
}
bool
NODELETE
interferesWithExitSideways
(
const
Effects& exitsSideways,
const
Effects& other)
{
if
(!exitsSideways.
exitsSideways
)
return
false
;
return
other.
controlDependent
|| other.
writes
|| other.
writesPinned
;
}
bool
NODELETE
interferesWithWritesLocalState
(
const
Effects& writesLocalState,
const
Effects& other)
{
if
(!writesLocalState.
writesLocalState
)
return
false
;
return
other.
writesLocalState
|| other.
readsLocalState
;
}
bool
NODELETE
interferesWithWritesPinned
(
const
Effects& writesPinned,
const
Effects& other)
{
if
(!writesPinned.
writesPinned
)
return
false
;
return
other.
writesPinned
|| other.
readsPinned
;
}
}
//
anonymous namespace
bool
Effects::interferes
(
const
Effects& other)
const
{
return
interferesWithTerminal
(*
this
, other)
||
interferesWithTerminal
(other, *
this
)
||
interferesWithExitSideways
(*
this
, other)
||
interferesWithExitSideways
(other, *
this
)
||
interferesWithWritesLocalState
(*
this
, other)
||
interferesWithWritesLocalState
(other, *
this
)
||
interferesWithWritesPinned
(*
this
, other)
||
interferesWithWritesPinned
(other, *
this
)
|| writes.
overlaps
(other.
writes
)
|| writes.
overlaps
(other.
reads
)
|| reads.
overlaps
(other.
writes
)
|| (fence && other.
fence
);
}
void
Effects::dump
(PrintStream& out)
const
{
CommaPrinter
comma
(
"
|
"
_s);
if
(terminal)
out.
print
(comma,
"
Terminal
"
_s);
if
(exitsSideways)
out.
print
(comma,
"
ExitsSideways
"
_s);
if
(controlDependent)
out.
print
(comma,
"
ControlDependent
"
_s);
if
(readsMutability == Mutability::Immutable)
out.
print
(comma,
"
ReadsImmutable
"
_s);
if
(writesLocalState)
out.
print
(comma,
"
WritesLocalState
"
_s);
if
(readsLocalState)
out.
print
(comma,
"
ReadsLocalState
"
_s);
if
(writesPinned)
out.
print
(comma,
"
WritesPinned
"
_s);
if
(readsPinned)
out.
print
(comma,
"
ReadsPinned
"
_s);
if
(fence)
out.
print
(comma,
"
Fence
"
_s);
if
(writes)
out.
print
(comma,
"
Writes:
"
_s, writes);
if
(reads)
out.
print
(comma,
"
Reads:
"
_s, reads);
}
} }
//
namespace JSC::B3
#
endif
//
ENABLE(B3_JIT)
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