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JIT: make bbID available in release, use it for pred list ordering #93636

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Avoid needing to reorder pred lists (in most cases) by relying on bbID for a persistent stable ordering.

Avoid needing to reorder pred lists (in most cases) by relying on `bbID`
for a persistent stable ordering.
@dotnet-issue-labeler dotnet-issue-labeler bot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Oct 17, 2023
@ghost ghost assigned AndyAyersMS Oct 17, 2023
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ghost commented Oct 17, 2023

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Avoid needing to reorder pred lists (in most cases) by relying on bbID for a persistent stable ordering.

Author: AndyAyersMS
Assignees: AndyAyersMS
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area-CodeGen-coreclr

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@AndyAyersMS
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@kunalspathak FYI.

Locally this didn't help much with TP; let's see what CI says.

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@kunalspathak FYI.

Locally this didn't help much with TP; let's see what CI says.

Seems like a nice TP win except that Arm64 shows more regressions. I glanced at few of the diffs and seems to be coming out of resolution moves, so perhaps happening because the block reordering, like we see in #93371.

@ghost ghost closed this Nov 17, 2023
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ghost commented Nov 17, 2023

Draft Pull Request was automatically closed for 30 days of inactivity. Please let us know if you'd like to reopen it.

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