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Fix hot/cold splitting #96074

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Dec 16, 2023
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Change #95836 removed a bit too much code, namely, a loop that set BBF_COLD on newly determined cold blocks. Restore that loop.

Add some additional IG jump dumping.

Fixes #95946

Change dotnet#95836 removed a bit too much code, namely, a loop that set
`BBF_COLD` on newly determined cold blocks. Restore that loop.

Add some additional IG jump dumping.

Fixes dotnet#95946
@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 Dec 15, 2023
@ghost ghost assigned BruceForstall Dec 15, 2023
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ghost commented Dec 15, 2023

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Issue Details

Change #95836 removed a bit too much code, namely, a loop that set BBF_COLD on newly determined cold blocks. Restore that loop.

Add some additional IG jump dumping.

Fixes #95946

Author: BruceForstall
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area-CodeGen-coreclr

Milestone: -

@BruceForstall
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/azp run runtime-coreclr crossgen2

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Azure Pipelines successfully started running 1 pipeline(s).

@BruceForstall
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@amanasifkhalid PTAL
cc @dotnet/jit-contrib

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LGTM, thanks for the fix!

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Well, the crossgen2 pipeline isn't clean, but it's better?

@BruceForstall BruceForstall merged commit b18db1b into dotnet:main Dec 16, 2023
148 of 155 checks passed
@BruceForstall BruceForstall deleted the FixHotColdSplitting branch December 16, 2023 02:47
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jakobbotsch commented Dec 16, 2023

Thanks for fixing this, definitely looks like I deleted too much here.

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Assertion failed: 'emitJumpCrossHotColdBoundary(srcOffs, dstOffs) == false'
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