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BMI1 functions #1163

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Torinde opened this issue Mar 28, 2024 · 1 comment
Open

BMI1 functions #1163

Torinde opened this issue Mar 28, 2024 · 1 comment
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instruction-set-support Implementing new SIMD ISA extensions portably

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@Torinde
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Torinde commented Mar 28, 2024 •
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https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#othertechs=BMI1
https://en.wikipedia.org/wiki/X86_Bit_manipulation_instruction_set#BMI1_(Bit_Manipulation_Instruction_Set_1)

implementation status for TZCNT: https://github.com/simd-everywhere/implementation-status/blob/main/x86.md#bmi1
@mr-c mr-c added the instruction-set-support Implementing new SIMD ISA extensions portably label Mar 28, 2024
@aqrit
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aqrit commented Apr 6, 2024

TZCNT is a nightmare to get the best code-gen on any given platform. The rest of TBM and BMI1 are simple boilerplate.

However, they don't really have anything to do with SIMD...
Does SIMDe want to provide coverage for all Intel Intrinsics?
There are many others _BitScanForward, _subborrow_u32, etc?

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@mr-c @aqrit @Torinde