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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2021-09-19 18:41:55 +0100 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2021-09-19 20:39:19 +0100 |
| commit | b7342e3137d8fa7c356a80c1ddecf1d410c27eef (patch) | |
| tree | d980b837c2e580177faae6849ae1ba78c39a5fe5 /llvm/lib/CodeGen/ReachingDefAnalysis.cpp | |
| parent | 2ca637c9769ff50e94ace3083075a97b50d147f0 (diff) | |
| download | llvm-b7342e3137d8fa7c356a80c1ddecf1d410c27eef.zip llvm-b7342e3137d8fa7c356a80c1ddecf1d410c27eef.tar.gz llvm-b7342e3137d8fa7c356a80c1ddecf1d410c27eef.tar.bz2 | |
[X86] Fold SHUFPS(shuffle(x),shuffle(y),mask) -> SHUFPS(x,y,mask')
We can combine unary shuffles into either of SHUFPS's inputs and adjust the shuffle mask accordingly.
Unlike general shuffle combining, we can be more aggressive and handle multiuse cases as we're not going to accidentally create additional shuffles.
Diffstat (limited to 'llvm/lib/CodeGen/ReachingDefAnalysis.cpp')
0 files changed, 0 insertions, 0 deletions