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Disable _tzcnt_u64 for ARM64EC #1054

Merged
merged 2 commits into from
Jan 27, 2022
Merged

Disable _tzcnt_u64 for ARM64EC #1054

merged 2 commits into from
Jan 27, 2022

Commits on Jan 27, 2022

  1. Disable _tzcnt_u64 for ARM64EC 

    The ARM64EC is a new Microsoft-designed ARM64 ABI that is compatible with AMD64 code. However, not all AMD64 intrinsic functions are supported. For, intrinsics that are lowered to AVX, AVX2 and AVX512 instructions are not supported, including the _tzcnt_u64. To make sure this file compiles for ARM64EC, the use of _tzcnt_u64 should be neutered.
    @mcfi
    mcfi committed Jan 27, 2022
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    @mcfi
    mcfi committed Jan 27, 2022
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