RFR: 8287223: C1: Inlining attempt through MH::invokeBasic() with null receiver [v2]
Vladimir Ivanov
vlivanov at openjdk.java.net
Fri May 27 20:36:27 UTC 2022
> Inlining attempt through `MH::invokeBasic()` when receiver is null. It triggers an assert when attempting to extract a `Method*` from a null constant.
>
> Proposed fix bails out inlining attempt when receiver is null constant.
>
> C2 has a similar issue, but the particular bytecode shape of `MH::invokeExact()` invoker hides the bug (dominating `MH::type()` call involves a null check and problematic call isn't compiled at all).
>
> Testing: hs-tier1 - hs-tier4
Vladimir Ivanov has updated the pull request incrementally with one additional commit since the last revision:
Fix C2 part
-------------
Changes:
- all: https://git.openjdk.java.net/jdk/pull/8894/files
- new: https://git.openjdk.java.net/jdk/pull/8894/files/0b35ff5d..eaae7537
Webrevs:
- full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8894&range=01
- incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8894&range=00-01
Stats: 12 lines in 2 files changed: 3 ins; 1 del; 8 mod
Patch: https://git.openjdk.java.net/jdk/pull/8894.diff
Fetch: git fetch https://git.openjdk.java.net/jdk pull/8894/head:pull/8894
PR: https://git.openjdk.java.net/jdk/pull/8894
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