diff options
| author | Sanjay Patel <spatel@rotateright.com> | 2021-11-23 09:50:24 -0500 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2021-11-23 09:57:44 -0500 |
| commit | 430ad9697d143b4c408acf0d0d01c17830ac2bb3 (patch) | |
| tree | 06c134a04bf8bbb27ac3862cd8e4cfe63255a377 /clang/lib/Frontend/InitPreprocessor.cpp | |
| parent | e6cd157407a24f7be1c15dbf949bac98400ff96d (diff) | |
| download | llvm-430ad9697d143b4c408acf0d0d01c17830ac2bb3.zip llvm-430ad9697d143b4c408acf0d0d01c17830ac2bb3.tar.gz llvm-430ad9697d143b4c408acf0d0d01c17830ac2bb3.tar.bz2 | |
[InstCombine] enhance bitwise select matching
I noticed that adding a seemingly unrelated fold for xor caused
regressions on similar patterns, and this is one of the
underlying causes.
This could also be a variation for code as seen in:
https://llvm.org/PR34047
...although that exact example should be fixed after:
D113035 / c36b7e21bd8f
The vector test shows that we are actually missing a potential
canonicalization for bitcast-of-sext-of-not or the inverse.
The scalar test shows that even if we had that canonicalization,
it would still be possible to see this pattern due to extra uses.
https://alive2.llvm.org/ce/z/y2BAgi
Diffstat (limited to 'clang/lib/Frontend/InitPreprocessor.cpp')
0 files changed, 0 insertions, 0 deletions