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firefox/third_party/rust/any_all_workaround/README.md
Daniel Baumann 5e9a113729
Adding upstream version 140.0. 
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-25 09:37:52 +02:00

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any_all_workaround

This is a workaround for bad codegen (Rust bug, LLVM bug) for the any() and all() reductions for NEON-backed SIMD vectors on 32-bit ARM. On other platforms these delegate to any() and all() in core::simd.

The plan is to abandon this crate once the LLVM bug is fixed or core::simd works around the LLVM bug.

The code is forked from the packed_simd crate.

This crate requires Nightly Rust as it depends on the portable_simd feature.

License

MIT OR Apache-2.0, since that's how packed_simd is licensed. (The ARM intrinsics Rust version workaround is from qcms, see LICENSE-MIT-QCMS.)