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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2015-10-15 09:45:50 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2015-10-15 09:45:50 +0000 |
commit | e15dd966d523731101f70ccf768bba12435a0208 (patch) | |
tree | ae9cb828a24ded2585a41af3f21411523b47897d /Source/JavaScriptCore/runtime/BasicBlockLocation.cpp | |
download | WebKitGtk-tarball-e15dd966d523731101f70ccf768bba12435a0208.tar.gz |
webkitgtk-2.10.2webkitgtk-2.10.2
Diffstat (limited to 'Source/JavaScriptCore/runtime/BasicBlockLocation.cpp')
-rw-r--r-- | Source/JavaScriptCore/runtime/BasicBlockLocation.cpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/runtime/BasicBlockLocation.cpp b/Source/JavaScriptCore/runtime/BasicBlockLocation.cpp new file mode 100644 index 000000000..33cc39611 --- /dev/null +++ b/Source/JavaScriptCore/runtime/BasicBlockLocation.cpp @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2014 Apple Inc. All rights reserved. + * Copyright (C) 2014 Saam Barati. <saambarati1@gmail.com> + * + * 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 "BasicBlockLocation.h" + +#include "CCallHelpers.h" +#include <climits> +#include <wtf/DataLog.h> + +namespace JSC { + +BasicBlockLocation::BasicBlockLocation(int startOffset, int endOffset) + : m_startOffset(startOffset) + , m_endOffset(endOffset) + , m_hasExecuted(false) +{ +} + +void BasicBlockLocation::insertGap(int startOffset, int endOffset) +{ + std::pair<int, int> gap(startOffset, endOffset); + if (!m_gaps.contains(gap)) + m_gaps.append(gap); +} + +Vector<std::pair<int, int>> BasicBlockLocation::getExecutedRanges() const +{ + Vector<Gap> result; + Vector<Gap> gaps = m_gaps; + int nextRangeStart = m_startOffset; + while (gaps.size()) { + Gap minGap(INT_MAX, 0); + unsigned minIdx = std::numeric_limits<unsigned>::max(); + for (unsigned idx = 0; idx < gaps.size(); idx++) { + // Because we know that the Gaps inside m_gaps aren't enclosed within one another, it suffices to just check the first element to test ordering. + if (gaps[idx].first < minGap.first) { + minGap = gaps[idx]; + minIdx = idx; + } + } + result.append(Gap(nextRangeStart, minGap.first - 1)); + nextRangeStart = minGap.second + 1; + gaps.remove(minIdx); + } + + result.append(Gap(nextRangeStart, m_endOffset)); + return result; +} + +void BasicBlockLocation::dumpData() const +{ + Vector<Gap> executedRanges = getExecutedRanges(); + for (Gap gap : executedRanges) + dataLogF("\tBasicBlock: [%d, %d] hasExecuted: %s\n", gap.first, gap.second, hasExecuted() ? "true" : "false"); +} + +#if ENABLE(JIT) +void BasicBlockLocation::emitExecuteCode(CCallHelpers& jit, MacroAssembler::RegisterID ptrReg) const +{ + jit.move(CCallHelpers::TrustedImmPtr(&m_hasExecuted), ptrReg); + jit.store8(CCallHelpers::TrustedImm32(true), CCallHelpers::Address(ptrReg, 0)); +} +#endif // ENABLE(JIT) + +} // namespace JSC |