projects / apple / javascriptcore.git / blame
| Commit | Line | Data |
|---|---|---|
| 14957cd0 | 1 | /* |
| 81345200 | 2 | * Copyright (C) 2013 Apple Inc. All rights reserved. |
| 14957cd0 A |
3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without | |
| 5 | * modification, are permitted provided that the following conditions | |
| 6 | * are met: | |
| 7 | * 1. Redistributions of source code must retain the above copyright | |
| 8 | * notice, this list of conditions and the following disclaimer. | |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 | * notice, this list of conditions and the following disclaimer in the | |
| 11 | * documentation and/or other materials provided with the distribution. | |
| 12 | * | |
| 13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' | |
| 14 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
| 15 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS | |
| 17 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 18 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 19 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 20 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 21 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 22 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | |
| 23 | * THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 | */ | |
| 25 | ||
| 81345200 A |
26 | #ifndef BytecodeLivenessAnalysisInlines_h |
| 27 | #define BytecodeLivenessAnalysisInlines_h | |
| 14957cd0 | 28 | |
| 81345200 A |
29 | #include "BytecodeLivenessAnalysis.h" |
| 30 | #include "CodeBlock.h" | |
| 31 | #include "Operations.h" | |
| 14957cd0 | 32 | |
| 81345200 A |
33 | namespace JSC { |
| 34 | ||
| 35 | inline bool operandIsAlwaysLive(CodeBlock* codeBlock, int operand) | |
| 36 | { | |
| 37 | if (VirtualRegister(operand).isArgument()) | |
| 38 | return true; | |
| 39 | return operand <= codeBlock->captureStart() && operand > codeBlock->captureEnd(); | |
| 40 | } | |
| 41 | ||
| 42 | inline bool operandThatIsNotAlwaysLiveIsLive(CodeBlock* codeBlock, const FastBitVector& out, int operand) | |
| 43 | { | |
| 44 | VirtualRegister virtualReg(operand); | |
| 45 | if (virtualReg.offset() > codeBlock->captureStart()) | |
| 46 | return out.get(virtualReg.toLocal()); | |
| 47 | size_t index = virtualReg.toLocal() - codeBlock->captureCount(); | |
| 48 | if (index >= out.numBits()) | |
| 49 | return false; | |
| 50 | return out.get(index); | |
| 51 | } | |
| 52 | ||
| 53 | inline bool operandIsLive(CodeBlock* codeBlock, const FastBitVector& out, int operand) | |
| 54 | { | |
| 55 | return operandIsAlwaysLive(codeBlock, operand) || operandThatIsNotAlwaysLiveIsLive(codeBlock, out, operand); | |
| 56 | } | |
| 57 | ||
| 58 | } // namespace JSC | |
| 59 | ||
| 60 | #endif // BytecodeLivenessAnalysisInlines_h | |
| 14957cd0 | 61 |