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| author | Sanjay Patel <spatel@rotateright.com> | 2019-05-21 18:53:53 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2019-05-21 18:53:53 +0000 |
| commit | 10f6b3989959978e41c2092251a4359fef30d99f (patch) | |
| tree | 429046d5f78c1c9193c67818713bf9f8afcfd551 /llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp | |
| parent | 76e5a1d3c3b107646d88cf91059972c2a2a5f163 (diff) | |
| download | bcm5719-llvm-10f6b3989959978e41c2092251a4359fef30d99f.tar.gz bcm5719-llvm-10f6b3989959978e41c2092251a4359fef30d99f.zip | |
[SelectionDAG] fold insert subvector of undef into undef
DAGCombiner simplifies this more liberally as:
// If inserting an UNDEF, just return the original vector.
if (N1.isUndef())
return N0;
So there's no way to make this visible in output AFAIK, but
doing this at node creation time should be slightly more efficient.
llvm-svn: 361287
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp')
0 files changed, 0 insertions, 0 deletions
