diff options
author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-04-10 09:28:39 +0000 |
---|---|---|
committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-04-10 09:28:39 +0000 |
commit | 32761a6cee1d0dee366b885b7b9c777e67885688 (patch) | |
tree | d6bec92bebfb216f4126356e55518842c2f476a1 /Source/JavaScriptCore/ftl/FTLLocation.h | |
parent | a4e969f4965059196ca948db781e52f7cfebf19e (diff) | |
download | WebKitGtk-tarball-32761a6cee1d0dee366b885b7b9c777e67885688.tar.gz |
webkitgtk-2.4.11webkitgtk-2.4.11
Diffstat (limited to 'Source/JavaScriptCore/ftl/FTLLocation.h')
-rw-r--r-- | Source/JavaScriptCore/ftl/FTLLocation.h | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/Source/JavaScriptCore/ftl/FTLLocation.h b/Source/JavaScriptCore/ftl/FTLLocation.h deleted file mode 100644 index 11868dd60..000000000 --- a/Source/JavaScriptCore/ftl/FTLLocation.h +++ /dev/null @@ -1,217 +0,0 @@ -/* - * Copyright (C) 2013-2015 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. - */ - -#ifndef FTLLocation_h -#define FTLLocation_h - -#if ENABLE(FTL_JIT) - -#include "DFGCommon.h" -#include "FPRInfo.h" -#include "GPRInfo.h" -#include "Reg.h" -#include <wtf/HashMap.h> - -namespace JSC { - -namespace B3 { -class ValueRep; -} // namespace B3 - -namespace FTL { - -class Location { -public: - enum Kind { - Unprocessed, - Register, - Indirect, - Constant - }; - - Location() - : m_kind(Unprocessed) - { - u.constant = 0; - } - - Location(WTF::HashTableDeletedValueType) - : m_kind(Unprocessed) - { - u.constant = 1; - } - - static Location forRegister(Reg reg, int32_t addend) - { - Location result; - result.m_kind = Register; - result.u.variable.regIndex = reg.index(); - result.u.variable.offset = addend; - return result; - } - - static Location forIndirect(Reg reg, int32_t offset) - { - Location result; - result.m_kind = Indirect; - result.u.variable.regIndex = reg.index(); - result.u.variable.offset = offset; - return result; - } - - static Location forConstant(int64_t constant) - { - Location result; - result.m_kind = Constant; - result.u.constant = constant; - return result; - } - - static Location forValueRep(const B3::ValueRep&); - - Kind kind() const { return m_kind; } - - bool hasReg() const { return kind() == Register || kind() == Indirect; } - Reg reg() const - { - ASSERT(hasReg()); - return Reg::fromIndex(u.variable.regIndex); - } - - bool hasOffset() const { return kind() == Indirect; } - int32_t offset() const - { - ASSERT(hasOffset()); - return u.variable.offset; - } - - bool hasAddend() const { return kind() == Register; } - int32_t addend() const - { - ASSERT(hasAddend()); - return u.variable.offset; - } - - bool hasConstant() const { return kind() == Constant; } - int64_t constant() const - { - ASSERT(hasConstant()); - return u.constant; - } - - explicit operator bool() const { return kind() != Unprocessed || u.variable.offset; } - - bool operator!() const { return !static_cast<bool>(*this); } - - bool isHashTableDeletedValue() const { return kind() == Unprocessed && u.variable.offset; } - - bool operator==(const Location& other) const - { - return m_kind == other.m_kind - && u.constant == other.u.constant; - } - - unsigned hash() const - { - unsigned result = m_kind; - - switch (kind()) { - case Unprocessed: - result ^= u.variable.offset; - break; - - case Register: - result ^= u.variable.regIndex; - break; - - case Indirect: - result ^= u.variable.regIndex; - result ^= u.variable.offset; - break; - - case Constant: - result ^= WTF::IntHash<int64_t>::hash(u.constant); - break; - } - - return WTF::IntHash<unsigned>::hash(result); - } - - void dump(PrintStream&) const; - - bool isGPR() const; - bool involvesGPR() const; - GPRReg gpr() const; - GPRReg directGPR() const; // Get the GPR and assert that there is no addend. - - bool isFPR() const; - FPRReg fpr() const; - - // Assuming that all registers are saved to the savedRegisters buffer according - // to FTLSaveRestore convention, this loads the value into the given register. - // The code that this generates isn't exactly super fast. This assumes that FP - // and SP contain the same values that they would have contained in the original - // frame, or that you've done one or more canonically formed calls (i.e. can - // restore the FP by following the call frame linked list numFramesToPop times, - // and SP can be recovered by popping FP numFramesToPop-1 times and adding 16). - void restoreInto(MacroAssembler&, char* savedRegisters, GPRReg result, unsigned numFramesToPop = 0) const; - -private: - Kind m_kind; - union { - int64_t constant; - struct { - unsigned regIndex; - int32_t offset; - } variable; - } u; -}; - -struct LocationHash { - static unsigned hash(const Location& key) { return key.hash(); } - static bool equal(const Location& a, const Location& b) { return a == b; } - static const bool safeToCompareToEmptyOrDeleted = true; -}; - -} } // namespace JSC::FTL - -namespace WTF { - -void printInternal(PrintStream&, JSC::FTL::Location::Kind); - -template<typename T> struct DefaultHash; -template<> struct DefaultHash<JSC::FTL::Location> { - typedef JSC::FTL::LocationHash Hash; -}; - -template<typename T> struct HashTraits; -template<> struct HashTraits<JSC::FTL::Location> : SimpleClassHashTraits<JSC::FTL::Location> { }; - -} // namespace WTF - -#endif // ENABLE(FTL_JIT) - -#endif // FTLLocation_h - |