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| author | Sanjay Patel <spatel@rotateright.com> | 2019-06-20 22:55:28 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2019-06-20 22:55:28 +0000 |
| commit | b342f026a466e6faf331d91fced29db5d39796aa (patch) | |
| tree | fa1cc0b1ac4e2e11a5d7f88839f4af38df4d307c /llvm/lib/TextAPI/MachO/InterfaceFile.cpp | |
| parent | 73986707bd57faab657c17acb6d219ed021f408a (diff) | |
| download | llvm-b342f026a466e6faf331d91fced29db5d39796aa.zip llvm-b342f026a466e6faf331d91fced29db5d39796aa.tar.gz llvm-b342f026a466e6faf331d91fced29db5d39796aa.tar.bz2 | |
[InstSimplify] simplify power-of-2 (single bit set) sequences
As discussed in PR42314:
https://bugs.llvm.org/show_bug.cgi?id=42314
Improving the canonicalization for these patterns:
rL363956
...means we should adjust/enhance the related simplification.
https://rise4fun.com/Alive/w1cp
Name: isPow2 or zero
%x = and i32 %xx, 2048
%a = add i32 %x, -1
%r = and i32 %a, %x
=>
%r = i32 0
llvm-svn: 363997
Diffstat (limited to 'llvm/lib/TextAPI/MachO/InterfaceFile.cpp')
0 files changed, 0 insertions, 0 deletions