JIT: refactor and enhance the redundant branch optimizer #76207
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One more preparatory step before introducing the new phi-based disambiguation. * handle some cases of ambiguous preds better * split out the jump threading pre checks into a helper * properly support updating switch preds * generalize retry logic a bit to handle more cases
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Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch Issue DetailsOne more preparatory step before introducing the new phi-based disambiguation.
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@EgorBo PTAL Mostly improved diffs, but some regressions where LSRA strategy changes (different spills and/or prolog/epilog changes). Retries should have minimal TP impact. |
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@EgorBo you approve? |
EgorBo
approved these changes
Sep 27, 2022
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One more preparatory step before introducing the new phi-based disambiguation.
Diffs