RFR: 8349814: [leyden] Avoid uncommon traps in preload code
Aleksey Shipilev
shade at openjdk.org
Tue Feb 11 10:52:59 UTC 2025
Preload code is the C2 code we load very early, before it gets substituted by more advanced C2 code. We are seeing lots of uncommon traps from the preloaded code, though, which invalidates it too early. We can do precompile code without uncommon traps to alleviate this.
Additional testing:
- [x] Ad-hoc perf tests (see comment below)
- [x] Linux x86_64 server fastdebug, `runtime/cds`
-------------
Commit messages:
- Fix
Changes: https://git.openjdk.org/leyden/pull/38/files
Webrev: https://webrevs.openjdk.org/?repo=leyden&pr=38&range=00
Issue: https://bugs.openjdk.org/browse/JDK-8349814
Stats: 19 lines in 3 files changed: 18 ins; 0 del; 1 mod
Patch: https://git.openjdk.org/leyden/pull/38.diff
Fetch: git fetch https://git.openjdk.org/leyden.git pull/38/head:pull/38
PR: https://git.openjdk.org/leyden/pull/38
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