/* * Copyright (C) 2012 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 "CallLinkStatus.h" #include "CodeBlock.h" #include "LLIntCallLinkInfo.h" namespace JSC { CallLinkStatus CallLinkStatus::computeFromLLInt(CodeBlock* profiledBlock, unsigned bytecodeIndex) { UNUSED_PARAM(profiledBlock); UNUSED_PARAM(bytecodeIndex); #if ENABLE(LLINT) Instruction* instruction = profiledBlock->instructions().begin() + bytecodeIndex; LLIntCallLinkInfo* callLinkInfo = instruction[4].u.callLinkInfo; return CallLinkStatus(callLinkInfo->lastSeenCallee.get(), false); #else return CallLinkStatus(0, false); #endif } CallLinkStatus CallLinkStatus::computeFor(CodeBlock* profiledBlock, unsigned bytecodeIndex) { UNUSED_PARAM(profiledBlock); UNUSED_PARAM(bytecodeIndex); #if ENABLE(JIT) && ENABLE(VALUE_PROFILER) if (!profiledBlock->numberOfCallLinkInfos()) return computeFromLLInt(profiledBlock, bytecodeIndex); if (profiledBlock->couldTakeSlowCase(bytecodeIndex)) return CallLinkStatus(0, true); JSFunction* target = profiledBlock->getCallLinkInfo(bytecodeIndex).lastSeenCallee.get(); if (!target) return computeFromLLInt(profiledBlock, bytecodeIndex); return CallLinkStatus(target, false); #else return CallLinkStatus(0, false); #endif } } // namespace JSC