RFR: 8323582: C2 SuperWord AlignVector: misaligned vector memory access with unaligned native memory [v2]

Roland Westrelin roland at openjdk.org
Wed Feb 19 12:14:56 UTC 2025


On Tue, 18 Feb 2025 17:20:23 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

> Right. I suppose code size might be slightly affected. But I only multi-version if we are already going to pre-main-post the loop. And that means that the loop is already copied 3x, and doing 4x is not that noticable I would suspect.

Wouldn't usual optimizations be applied to the slow loop as well (pre/main/post, unrolling)?

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PR Comment: https://git.openjdk.org/jdk/pull/22016#issuecomment-2668476997


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