| Issue |
120913
|
| Summary |
LLVM cannot constant fold memchr with constant size
|
| Labels |
|
| Assignees |
|
| Reporter |
philnik777
|
```c++
void* test1(char* first, char val) {
return __builtin_memchr(first, val, 2);
}
```
always generates a call to `memchr`, even though it could just check the two chars. I can't really see a case where calling `memchr` is faster than just checking the two chars. For larger N it would also be interesting to use vector comparisons for this instead of calling a function.
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