| Issue |
207886
|
| Summary |
[X86][APX] missed ccmp optimization
|
| Labels |
backend:X86,
missed-optimization
|
| Assignees |
|
| Reporter |
Andarwinux
|
https://godbolt.org/z/c3hc3jqcY
```c++
int foo_apx(int a, int b, int c, int d) {
if (b != d && a < c || a > d) {
return b;
}
return a;
}
```
gcc:
```asm
"foo_apx(int, int, int, int)":
cmp esi, ecx
ccmpne {dfv=sf, of} edi, edx
ccmpge {dfv=sf} ecx, edi
cmovl eax, edi, esi
ret
```
clang:
```asm
foo_apx(int, int, int, int):
cmp esi, ecx
cmovne eax, edi, esi
cmp edi, edx
cmovge eax, edi
cmp edi, ecx
cmovg eax, esi
ret
```
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