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[release/6.0-staging] Workaround for C++ compiler bug on Arm64 #93530

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merged 1 commit into from
Oct 16, 2023

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@jkotas jkotas commented Oct 15, 2023

Backport of #93523 to release/6.0

MSVC rolled out to the build machines a few days ago has a codegen bug that affects the JIT on Arm64. We are applying a temporary workaround to disable optimizations around the affected methods.

Customer Impact

Multiplication of two constants produces bad result in some cases.

Testing

The affected JIT tests are passing.

Risk

Low

@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 15, 2023
@ghost ghost assigned jkotas Oct 15, 2023
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ghost commented Oct 15, 2023

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
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Issue Details

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Author: jkotas
Assignees: jkotas
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area-CodeGen-coreclr

Milestone: -

@jkotas jkotas changed the title Workaround for https://github.com/dotnet/runtime/issues/93442 [release/6.0-staging] Workaround for C++ compiler bug on Arm64 Oct 15, 2023
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approved. we will take for consideration in 6.0.x

@jeffschwMSFT jeffschwMSFT added the Servicing-consider Issue for next servicing release review label Oct 15, 2023
@jeffschwMSFT jeffschwMSFT added this to the 6.0.x milestone Oct 15, 2023
@jeffschwMSFT jeffschwMSFT added Servicing-approved Approved for servicing release and removed Servicing-consider Issue for next servicing release review labels Oct 16, 2023
@jkotas jkotas merged commit bd3c979 into dotnet:release/6.0-staging Oct 16, 2023
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@jkotas jkotas deleted the issue-93442-6.0 branch October 16, 2023 18:29
@ghost ghost locked as resolved and limited conversation to collaborators Nov 15, 2023
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3 participants