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JIT: Remove IV analysis quirk in loop cloning - #96563
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In a few cases the IV analysis on the new loops succeeds here even when the old did not (maybe because for old loops the logic runs before flow graph changes have happened due to loop canonicalization). Remove the quirk that was preventing us from cloning these loops.
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Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch Issue DetailsIn a few cases the IV analysis on the new loops succeeds here even when the old did not (maybe because for old loops the logic runs before flow graph changes have happened due to loop canonicalization). Remove the quirk that was preventing us from cloning these loops.
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jakobbotsch
marked this pull request as ready for review
January 5, 2024 21:33
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cc @dotnet/jit-contrib PTAL @BruceForstall |
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Fix a bug in
FlowGraphNaturalLoop::MatchLimit; it did not properly check limit locals for address exposure when evaluating their invariance (the old logic does that). Also support promoted struct fields (like the old logic).No diffs expected -- the diffs of the quirk here were coming from this bug in
FlowGraphNaturalLoop::MatchLimit.