RFR: 8370251: C2: Inlining checks for method handle intrinsics are too strict
Vladimir Kozlov
kvn at openjdk.org
Fri Oct 24 19:46:02 UTC 2025
On Mon, 20 Oct 2025 21:00:40 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:
> C2 performs access checks during inlining attempts through method handle
> intrinsic calls. But there are no such checks happening at runtime when
> executing the calls. (Access checks are performed when corresponding method
> handle is resolved.) So, inlining may fail due to access checks failure while
> the call always succeeds at runtime.
>
> The fix is to skip access checks when inlining through method handle intrinsics.
>
> Testing: hs-tier1 - hs-tier4
@iwanowww thank you for answering my question.
-------------
Marked as reviewed by kvn (Reviewer).
PR Review: https://git.openjdk.org/jdk/pull/27908#pullrequestreview-3378587335
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