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[X86][AVX] Add tests showing failure to use chained PACKSS/PACKUS for multi-stage...
authorSimon Pilgrim <llvm-dev@redking.me.uk>
Fri, 3 Apr 2020 12:50:41 +0000 (13:50 +0100)
committerSimon Pilgrim <llvm-dev@redking.me.uk>
Fri, 3 Apr 2020 13:16:16 +0000 (14:16 +0100)
commit5e426363ba4bd7b5e298be2b2ee4634e7abe7083
tree74d31d0e8da0c54d9206038389d15542491b359atree | snapshot
parenta46e7d7a5f60b452340eb8ebc873538659c73e78commit | diff
[X86][AVX] Add tests showing failure to use chained PACKSS/PACKUS for multi-stage compaction shuffles

The sign/zero extended top bits mean that we could use chained PACK*S ops here
llvm/test/CodeGen/X86/vector-shuffle-512-v64.ll diff | blob | history
Domain: System / Toolchain;