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[release/8.0-staging] disable optimizations for PopCount - #99832
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jeffschwMSFT merged 2 commits intoMar 15, 2024
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avoid using an optimization which might fail on non-SSE4 cpus.
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Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch |
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pre-approval to unblock regression in 8.0.3
jeffschwMSFT
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Mar 15, 2024
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relevant VS Developer Community feedback item : https://developercommunity.visualstudio.com/t/Visual-Studio-1793-crashes-during-star/10614986 |
carlossanlop added a commit
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Mar 18, 2024
* disable optimizations for PopCount avoid using an optimization which might fail on non-SSE4 cpus. * remove whitespace for jit-format --------- Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Manish Godse <61718172+mangod9@users.noreply.github.com>
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Backport of #99796 to release/8.0-staging
/cc @mangod9
Customer Impact
Regression
This was a regression in 8.0.3 due to a compiler update which caused popcnt instruction from being emitted. This causes .NET applications to stop working on cpus without SSE4 support.
Testing
Verified locally that popcnt is not being generated, and also that inlining for these methods is disabled.
Risk
[Low]