================ @@ -4213,7 +4213,7 @@ such as ``unsigned __int128`` and C23 ``unsigned _BitInt(N)``. ``__builtin_clzg`` (respectively ``__builtin_ctzg``) returns the number of leading (respectively trailing) 0 bits in the first argument. The first argument -can be of any unsigned integer type. +can be of any unsigned integer type or fixed boolean vector. ---------------- jhuber6 wrote:
Counting bits in a mask is relatively common, the immediate use-case I have is implementing `strlen` where you want to do a wide read, compare to a vector full of `'\0'`, and then get the offset of the first match. This is what the C++26 parallelism proposal for SIMD calls 'find_first_set(simd_mask)`. https://github.com/llvm/llvm-project/pull/154203 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
