projects / apple / javascriptcore.git / blame
| Commit | Line | Data |
|---|---|---|
| f9bf01c6 | 1 | /* |
| 81345200 | 2 | * Copyright (C) 2013 Apple Inc. All rights reserved. |
| f9bf01c6 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. ``AS IS'' AND ANY | |
| 14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR | |
| 17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 | */ | |
| 25 | ||
| 81345200 A |
26 | #ifndef DFGOSRExitPreparation_h |
| 27 | #define DFGOSRExitPreparation_h | |
| f9bf01c6 | 28 | |
| 81345200 | 29 | #if ENABLE(DFG_JIT) |
| f9bf01c6 | 30 | |
| 81345200 A |
31 | #include "CallFrame.h" |
| 32 | #include "CodeOrigin.h" | |
| f9bf01c6 | 33 | |
| 81345200 | 34 | namespace JSC { namespace DFG { |
| f9bf01c6 | 35 | |
| 81345200 A |
36 | // Make sure all code on our inline stack is JIT compiled. This is necessary since |
| 37 | // we may opt to inline a code block even before it had ever been compiled by the | |
| 38 | // JIT, but our OSR exit infrastructure currently only works if the target of the | |
| 39 | // OSR exit is JIT code. This could be changed since there is nothing particularly | |
| 40 | // hard about doing an OSR exit into the interpreter, but for now this seems to make | |
| 41 | // sense in that if we're OSR exiting from inlined code of a DFG code block, then | |
| 42 | // probably it's a good sign that the thing we're exiting into is hot. Even more | |
| 43 | // interestingly, since the code was inlined, it may never otherwise get JIT | |
| 44 | // compiled since the act of inlining it may ensure that it otherwise never runs. | |
| 45 | void prepareCodeOriginForOSRExit(ExecState*, CodeOrigin); | |
| 93a37866 | 46 | |
| 81345200 | 47 | } } // namespace JSC::DFG |
| f9bf01c6 | 48 | |
| 81345200 A |
49 | #endif // ENABLE(DFG_JIT) |
| 50 | ||
| 51 | #endif // DFGOSRExitPreparation_h | |
| f9bf01c6 | 52 | |
| 93a37866 | 53 |