llvm-project

a89bb629 - [Clang] Update the 'gpuintrin.h' lane scan handling (#185451)

[Clang] Update the 'gpuintrin.h' lane scan handling (#185451) Summary: This patch uses a more efficient algorithm for the reduction rather than a divergent branch. We also provide a prefix and suffix version, the sum is now just the first element of this. This changes the name to this, which is technically breaking but I don't think these were really used in practice and it's a trivial change based on the clang version if it's really needed.. ``` __gpu_prefix_scan_sum_u32(...) __gpu_suffix_scan_sum_u32(...) ```