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| author | Nadav Rotem <nadav.rotem@intel.com> | 2012-07-14 21:30:27 +0000 |
|---|---|---|
| committer | Nadav Rotem <nadav.rotem@intel.com> | 2012-07-14 21:30:27 +0000 |
| commit | b7e230d999deec5c90ee51a7c2bbc6ee5be0a914 (patch) | |
| tree | c0505b116ffc3e1e9cc850dddd28b7cdab114bc6 /lib/CodeGen/SelectionDAG/SelectionDAG.cpp | |
| parent | 27982e110817e373ed85064eb844bbaec0fe6771 (diff) | |
Add a dagcombine optimization to convert concat_vectors of undefs into a single undef.
The unoptimized concat_vectors isd prevented the canonicalization of the vector_shuffle node.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160221 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAG.cpp')
0 files changed, 0 insertions, 0 deletions