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JIT stencil generation for i686-pc-windows-msvc has issues with SSE #146365

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JIT stencil generation for i686-pc-windows-msvc has issues with SSE#146365
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OS-windowsbuildThe build process and cross-buildThe build process and cross-buildtopic-JITtype-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error
@eendebakpt

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@eendebakpt
eendebakpt
opened on Mar 24, 2026
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Bug report

Bug description:

When working on adding float operations in #146307 the bytecode generation the CI failed for only the [i686-pc-windows-msvc] build. Link to failing CI:

i686-pc-windows-msvc

We can make the CI run by adding the -mno-sse flags:

8559fb8

Ideally we should not have to disable SSE at this might hurt performance.

CPython versions tested on:

CPython main branch

Operating systems tested on:

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    OS-windowsbuildThe build process and cross-buildThe build process and cross-buildtopic-JITtype-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

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