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Found when trying to enable OSR by default and prospecting for arm64 support.

  • Explicitly initalize the OSR step variable.
  • Prevent fgOptimizeUncondBranchToSimpleCond from changing the scratch entry
    BB to have conditional flow.
  • Retain runtime supplied patchpoint info when cleaning up after an altjit failure.

Found when trying to enable OSR by default and prospecting for arm64 support.

* Explicitly initalize the OSR step variable.
* Prevent `fgOptimizeUncondBranchToSimpleCond` from changing the scratch entry
  BB to have conditional flow.
* Retain runtime supplied patchpoint info when cleaning up after an altjit failure.
@ghost ghost added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Dec 3, 2021
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ghost commented Dec 3, 2021

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Issue Details

Found when trying to enable OSR by default and prospecting for arm64 support.

  • Explicitly initalize the OSR step variable.
  • Prevent fgOptimizeUncondBranchToSimpleCond from changing the scratch entry
    BB to have conditional flow.
  • Retain runtime supplied patchpoint info when cleaning up after an altjit failure.
Author: AndyAyersMS
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area-CodeGen-coreclr

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@AndyAyersMS
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cc @dotnet/jit-contrib

Pulls in the two fixes from #61934 and one from a local fork where I'm working on arm64 support.

@AndyAyersMS AndyAyersMS merged commit 43b58c2 into dotnet:main Dec 4, 2021
@ghost ghost locked as resolved and limited conversation to collaborators Jan 3, 2022
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