| Issue |
164748
|
| Summary |
aarch64: sbc is not being used
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
pinskia
|
Take:
```
unsigned f1(unsigned a, unsigned b, unsigned c)
{
unsigned t = a < b;
return c - t;
}
```
LLVM produces:
```
f1:
cmp w0, w1
cset w8, lo
sub w0, w2, w8
ret
```
The `cset/sub` combo should be replaced with:
```
sbc w0, w2, wzr
```
Which is what GCC produces:
```
f1:
cmp w0, w1
sbc w0, w2, wzr
ret
```
https://godbolt.org/z/5f83qTK79
![]()
_______________________________________________
llvm-bugs mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
