| commit | 9dbafbd5d3eeab36fb8aaa48185bd228658783f6 | [log] [tgz] |
|---|---|---|
| author | bmeurer <bmeurer@chromium.org> | Tue May 23 12:02:28 2017 |
| committer | Commit bot <commit-bot@chromium.org> | Tue May 23 12:02:28 2017 |
| tree | 06fbf571d48794b01e056c23ca8179bc30f70f7d | |
| parent | d085eee20d0b2cf0722029e1bb3fe65e963382bf [diff] |
[turbofan] Add support for inlining accessors into try-blocks.
Previously the inlining of accessors into try-blocks (i.e. try/catch,
try/finally, for-of, etc.) was disabled in JSNativeContextSpecialization,
which prevented a couple of interesting optimizations, i.e. we end up
with a LOAD_IC in optimized code for this simple example:
class A { get x() { return 1; } }
function foo(a) {
try {
return a.x;
} catch (e) {
return 0;
}
}
foo(new A)
This is now fixed and the accessors are properly rewired into the
handler chain.
BUG=v8:6278,v8:6344,v8:6424
R=jarin@chromium.org
Review-Url: https://codereview.chromium.org/2902533003
Cr-Commit-Position: refs/heads/master@{#45485}
V8 is Google's open source JavaScript engine.
V8 implements ECMAScript as specified in ECMA-262.
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