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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-04-10 09:28:39 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-04-10 09:28:39 +0000 |
commit | 32761a6cee1d0dee366b885b7b9c777e67885688 (patch) | |
tree | d6bec92bebfb216f4126356e55518842c2f476a1 /Source/JavaScriptCore/jit/CachedRecovery.h | |
parent | a4e969f4965059196ca948db781e52f7cfebf19e (diff) | |
download | WebKitGtk-tarball-32761a6cee1d0dee366b885b7b9c777e67885688.tar.gz |
webkitgtk-2.4.11webkitgtk-2.4.11
Diffstat (limited to 'Source/JavaScriptCore/jit/CachedRecovery.h')
-rw-r--r-- | Source/JavaScriptCore/jit/CachedRecovery.h | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/Source/JavaScriptCore/jit/CachedRecovery.h b/Source/JavaScriptCore/jit/CachedRecovery.h deleted file mode 100644 index 5fe39dee7..000000000 --- a/Source/JavaScriptCore/jit/CachedRecovery.h +++ /dev/null @@ -1,137 +0,0 @@ -/* - * 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. - */ - -#ifndef CachedRecovery_h -#define CachedRecovery_h - -#if ENABLE(JIT) - -#include "ValueRecovery.h" -#include "VirtualRegister.h" -#include <wtf/Vector.h> - -namespace JSC { - -// A CachedRecovery is a wrapper around a ValueRecovery that records where said -// value should go on the stack and/or in registers. Whenever we perform an -// operation changing the ValueRecovery, we update the CachedRecovery's member -// in place. -class CachedRecovery { -public: - CachedRecovery(ValueRecovery recovery) - : m_recovery { recovery } - { - } - - CachedRecovery(CachedRecovery&) = delete; - CachedRecovery(CachedRecovery&&) = delete; - CachedRecovery& operator=(CachedRecovery&) = delete; - CachedRecovery& operator=(CachedRecovery&&) = delete; - - const Vector<VirtualRegister, 1>& targets() const { return m_targets; } - - void addTarget(VirtualRegister reg) - { - ASSERT(m_targets.isEmpty() || m_targets.last() < reg); - m_targets.append(reg); - } - - void removeTarget(VirtualRegister reg) - { - ASSERT_UNUSED(reg, m_targets.last() == reg); - m_targets.shrink(m_targets.size() - 1); - } - - void clearTargets() - { - m_targets.clear(); - } - - void setWantedJSValueRegs(JSValueRegs jsValueRegs) - { - ASSERT(m_wantedFPR == InvalidFPRReg); - m_wantedJSValueRegs = jsValueRegs; - } - - void setWantedFPR(FPRReg fpr) - { - ASSERT(!m_wantedJSValueRegs); - m_wantedFPR = fpr; - } - - // Determine whether converting this recovery into a JSValue will - // require additional GPRs and/or FPRs. - // This is guaranteed to only depend on the DataFormat, and the - // result of these calls will stay valid after loads and/or stores. - bool boxingRequiresGPR() const - { -#if USE(JSVALUE64) - return recovery().dataFormat() == DataFormatDouble; -#else - return false; -#endif - } - bool boxingRequiresFPR() const - { -#if USE(JSVALUE64) - switch (recovery().dataFormat()) { - case DataFormatInt52: - case DataFormatStrictInt52: - return true; - - default: - return false; - } -#else - return false; -#endif - } - - // This is used to determine what kind of register we need to be - // able to load a recovery. We only use it when a direct load is - // currently impossible, to determine whether we should spill a - // GPR or an FPR for loading this value. - bool loadsIntoGPR() const; - bool loadsIntoFPR() const; - - ValueRecovery recovery() const { return m_recovery; } - - void setRecovery(ValueRecovery recovery) { m_recovery = recovery; } - - JSValueRegs wantedJSValueRegs() const { return m_wantedJSValueRegs; } - - FPRReg wantedFPR() const { return m_wantedFPR; } -private: - ValueRecovery m_recovery; - JSValueRegs m_wantedJSValueRegs; - FPRReg m_wantedFPR { InvalidFPRReg }; - Vector<VirtualRegister, 1> m_targets; -}; - -} // namespace JSC - -#endif // ENABLE(JIT) - -#endif // CachedRecovery_h |