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| author | Jessica Paquette <jpaquette@apple.com> | 2020-05-01 16:57:12 -0700 |
|---|---|---|
| committer | Jessica Paquette <jpaquette@apple.com> | 2020-05-05 18:35:39 -0700 |
| commit | b1b86d1c28150d3e54e5d33072b4afb6011b7ab0 (patch) | |
| tree | d449bc694b259d0db72db6e487de693884b798bf /clang/lib/Frontend/CompilerInvocation.cpp | |
| parent | 17fc6518608fa4bffda12c5a86dd154bcfdbee88 (diff) | |
| download | llvm-b1b86d1c28150d3e54e5d33072b4afb6011b7ab0.zip llvm-b1b86d1c28150d3e54e5d33072b4afb6011b7ab0.tar.gz llvm-b1b86d1c28150d3e54e5d33072b4afb6011b7ab0.tar.bz2 | |
[AArch64][GlobalISel] Fold shifts into G_ICMP
Since G_ICMP can be selected to a SUBS, we can fold shifts into such compares.
E.g.
```
cmp w1, w0, lsl #3
cmp w1, w0, lsr #3
cmp w1, w0, asr #3
```
This is done the same way as for adds and subtracts, using
`selectShiftedRegister`.
This gives some minor code size savings on CTMark.
https://reviews.llvm.org/D79365
Diffstat (limited to 'clang/lib/Frontend/CompilerInvocation.cpp')
0 files changed, 0 insertions, 0 deletions