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i686-apple-darwin chooses a pre-pentiumpro cpu by default #53423

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gnzlbg opened this Issue Aug 16, 2018 · 1 comment

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gnzlbg commented Aug 16, 2018 •
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The first 32-bit x86 apple machine used the "yonah" CPU, but we (and clang) set a generic i686 CPU instead that has no MMX, no SSE, etc.

This is also clang bug: https://bugs.llvm.org/show_bug.cgi?id=38594

We should wait and see how clang resolves this bug before doing anything.

@gnzlbg gnzlbg referenced this issue Aug 17, 2018

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Building the library for 32-bit architectures #212

@estebank estebank added A-LLVM I-slow O-macos labels Jan 19, 2019

@gnzlbg gnzlbg referenced this issue Mar 16, 2019

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Tracking issue for hint::spin_loop (renamed sync::atomic::spin_loop_hint) #55002

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gnzlbg commented Mar 16, 2019

This appears to be fixed now: https://rust.godbolt.org/z/UqjUHQ the default CPU is "yonah".

@gnzlbg gnzlbg closed this Mar 16, 2019

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