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| author | Sanjay Patel <spatel@rotateright.com> | 2017-01-19 16:12:10 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2017-01-19 16:12:10 +0000 |
| commit | 291c3d8ff21652a7bd654cfc170e0891e46a84da (patch) | |
| tree | d89a555a5af16e7b7431e921767fc52ddb55dc27 /clang | |
| parent | 08df2464073f32c997c3ab39b6a3944a75923884 (diff) | |
| download | bcm5719-llvm-291c3d8ff21652a7bd654cfc170e0891e46a84da.tar.gz bcm5719-llvm-291c3d8ff21652a7bd654cfc170e0891e46a84da.zip | |
[InstCombine] icmp Pred (shl nsw X, C1), C0 --> icmp Pred X, C0 >> C1
Try harder to fold icmp with shl nsw as discussed here:
http://lists.llvm.org/pipermail/llvm-dev/2017-January/108749.html
This is similar to the 'shl nuw' transforms that were added with D25913.
This may eventually help solve:
https://llvm.org/bugs/show_bug.cgi?id=30773
Differential Revision: https://reviews.llvm.org/D28406
llvm-svn: 292492
Diffstat (limited to 'clang')
0 files changed, 0 insertions, 0 deletions
