| commit | 19aa7a20b0c39ea9ef81d6e021863183732f82c0 | [log] [tgz] |
|---|---|---|
| author | bjaideep <bjaideep@ca.ibm.com> | Wed Dec 21 16:37:20 2016 |
| committer | Commit bot <commit-bot@chromium.org> | Wed Dec 21 16:37:20 2016 |
| tree | d35ef2ef96a4b5349a0c5c62fc84c99e21c5b88d | |
| parent | 455c244cbd69c6ab9ac35b2b8b61b2d737101863 [diff] |
PPC/s390: [TypeFeedbackVector] Root literal arrays in function literals slots
Port 93df094081f04c629c3df2e40318de90ce5e0fb9
Original Commit Message:
Literal arrays and feedback vectors for a function can be garbage
collected if we don't have a rooted closure for the function, which
happens often. It's expensive to come back from this (recreating
boilerplates and gathering feedback again), and the cost is
disproportionate if the function was inlined into optimized code.
To guard against losing these arrays when we need them, we'll now
create literal arrays when creating the feedback vector for the outer
closure, and root them strongly in that vector.
R=mvstanton@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:5456
LOG=N
Review-Url: https://codereview.chromium.org/2592043003
Cr-Commit-Position: refs/heads/master@{#41898}
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