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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2021-01-05 15:01:23 +0000 |
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| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2021-01-05 15:01:45 +0000 |
| commit | 73a44f437bf19ecf2c865e6c8b9b8a2e4a811960 (patch) | |
| tree | 10b8cddb70f8dfcbe67265b973eddab5c16250b6 /llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp | |
| parent | c3403dc63d73710d14844e8a8cfad7a0f52d4a54 (diff) | |
| download | llvm-73a44f437bf19ecf2c865e6c8b9b8a2e4a811960.zip llvm-73a44f437bf19ecf2c865e6c8b9b8a2e4a811960.tar.gz llvm-73a44f437bf19ecf2c865e6c8b9b8a2e4a811960.tar.bz2 | |
[X86][AVX] combineVectorSignBitsTruncation - use PACKSS/PACKUS in more AVX cases
AVX512 has fast truncation ops, but if the truncation source is a concatenation of subvectors then its likely that we can use PACK more efficiently.
This is only guaranteed to work for truncations to 128/256-bit vectors as the PACK works across 128-bit sub-lanes, for now I've just disabled 512-bit truncation cases but we need to get them working eventually for D61129.
Diffstat (limited to 'llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp')
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