MSVC instruction detection (fixed up #809) #3923
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ggerganov
approved these changes
Nov 3, 2023
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This does correctly detect AVX, AVX2, and FMA on my CPU with MSVC. I do not have AVX-512 either. |
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Tested successfully on a Windows AVX-512 machine (Github CI has them). |
cebtenzzre
approved these changes
Nov 4, 2023
olexiyb
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Nov 23, 2023
…3923) * Add detection code for avx * Only check hardware when option is ON * Modify per code review sugguestions * Build locally will detect CPU * Fixes CMake style to use lowercase like everywhere else * cleanup * fix merge * linux/gcc version for testing * msvc combines avx2 and fma into /arch:AVX2 so check for both * cleanup * msvc only version * style * Update FindSIMD.cmake --------- Co-authored-by: Howard Su <[email protected]> Co-authored-by: Jeremy Dunn <[email protected]>
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I got annoyed by #3906, so I took @howard0su's #809 and cleaned it up for submission. Note that this is for MSVC only and is ignored on Linux (Linux has
-march=nativeanyways). If you want to try this on Linux grab 5c5281b which is what I used for testing purposes.I'm keeping this as a draft until someone with MSVC and AVX-512 actually confirms that this works! I have no Windows and no AVX-512.