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authorLorry Tar Creator <lorry-tar-importer@lorry>2015-10-15 09:45:50 +0000
committerLorry Tar Creator <lorry-tar-importer@lorry>2015-10-15 09:45:50 +0000
commite15dd966d523731101f70ccf768bba12435a0208 (patch)
treeae9cb828a24ded2585a41af3f21411523b47897d /Source/JavaScriptCore/bytecode/MethodOfGettingAValueProfile.cpp
downloadWebKitGtk-tarball-e15dd966d523731101f70ccf768bba12435a0208.tar.gz
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+/*
+ * Copyright (C) 2012, 2013 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 "MethodOfGettingAValueProfile.h"
+
+#if ENABLE(DFG_JIT)
+
+#include "CodeBlock.h"
+#include "JSCInlines.h"
+
+namespace JSC {
+
+MethodOfGettingAValueProfile MethodOfGettingAValueProfile::fromLazyOperand(
+ CodeBlock* codeBlock, const LazyOperandValueProfileKey& key)
+{
+ MethodOfGettingAValueProfile result;
+ result.m_kind = LazyOperand;
+ result.u.lazyOperand.codeBlock = codeBlock;
+ result.u.lazyOperand.bytecodeOffset = key.bytecodeOffset();
+ result.u.lazyOperand.operand = key.operand().offset();
+ return result;
+}
+
+EncodedJSValue* MethodOfGettingAValueProfile::getSpecFailBucket(unsigned index) const
+{
+ switch (m_kind) {
+ case None:
+ return 0;
+
+ case Ready:
+ return u.profile->specFailBucket(index);
+
+ case LazyOperand: {
+ LazyOperandValueProfileKey key(u.lazyOperand.bytecodeOffset, VirtualRegister(u.lazyOperand.operand));
+
+ ConcurrentJITLocker locker(u.lazyOperand.codeBlock->m_lock);
+ LazyOperandValueProfile* profile =
+ u.lazyOperand.codeBlock->lazyOperandValueProfiles().add(locker, key);
+ return profile->specFailBucket(index);
+ }
+
+ default:
+ RELEASE_ASSERT_NOT_REACHED();
+ return 0;
+ }
+}
+
+} // namespace JSC
+
+#endif // ENABLE(DFG_JIT)
+