| Issue | 87444 |
|---|---|
| Summary | [PowerPC] LI folding opportunity |
| Labels | backend:PowerPC |
| Assignees | |
| Reporter | chenzheng1030 |
See https://github.com/llvm/llvm-project/pull/86857/files#r1548822138
If we know the lowest bit of gpr5 is 0( slwi 5, 6, 1), PPC should be able to fold
```
li 3, 1
rlwimi 3, 5, 0, 0, 30
```
to
```
addi 3, 5, 1
```Or ``` ori 3, 5, 1 ```
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