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| author | Sanjay Patel <spatel@rotateright.com> | 2019-03-14 19:22:08 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2019-03-14 19:22:08 +0000 |
| commit | de1d5d3675992a60c95b17d70ea817468883c485 (patch) | |
| tree | 705e488bdb810e0a0cba00b3a36906e11285c1dd /llvm/lib/Support/CommandLine.cpp | |
| parent | 6e86216531e2c53f171aaf8b911327ab616c6c0d (diff) | |
| download | bcm5719-llvm-de1d5d3675992a60c95b17d70ea817468883c485.tar.gz bcm5719-llvm-de1d5d3675992a60c95b17d70ea817468883c485.zip | |
[InstCombine] canonicalize funnel shift constant shift amount to be modulo bitwidth
The shift argument is defined to be modulo the bitwidth, so if that argument
is a constant, we can always reduce the constant to its minimal form to allow
better CSE and other follow-on transforms.
We need to be careful to ignore constant expressions here, or we will likely
infinite loop. I'm adding a general vector constant query for that case.
Differential Revision: https://reviews.llvm.org/D59374
llvm-svn: 356192
Diffstat (limited to 'llvm/lib/Support/CommandLine.cpp')
0 files changed, 0 insertions, 0 deletions
