JIT: disable phi based redundant branch opts #76695
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This is exposing our lack of SSA update and leading downstream opts like CSE and assertion prop to make bad decisions. Disabling for now until I have time to figure out how to safely enable. Fixes dotnet#76636, dotnet#76507
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Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch Issue DetailsThis is exposing our lack of SSA update and leading downstream opts like CSE and assertion prop to make bad decisions. Disabling for now until I have time to figure out how to safely enable.
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@BruceForstall PTAL See linked issues for some analysis on what goes wrong. |
EgorBo
approved these changes
Oct 6, 2022
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Runtime test failures look spurious. |
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/azp run runtime-coreclr libraries-jitstress, runtime-coreclr jitstress |
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Azure Pipelines successfully started running 2 pipeline(s). |
BruceForstall
approved these changes
Oct 6, 2022
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Only jitstress failure looks like an existing System.Net.Sockets issue #72365 |
This was referenced Oct 6, 2022
This was referenced Oct 11, 2022
This was referenced Oct 13, 2022
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This is exposing our lack of SSA update and leading downstream opts like CSE and assertion prop to make bad decisions.
Disabling for now until I have time to figure out how to safely enable.
Fixes #76636, #76507
Diffs show lots of code size increases. Hopefully we can get most of this back.