[llvm] [X86, SimplifyCFG] Support hoisting load/store with conditional faulting (Part II) (PR #108812)
Simon Pilgrim via llvm-commits
llvm-commits at lists.llvm.org
Fri Sep 27 05:50:08 PDT 2024
RKSimon wrote:
For cases like this why aren't we folding to:
```
void src(int a, int *c, int *d) {
if (a)
*c = a;
else
*d = a;
}
void tgt(int a, int *c, int *d) {
int *p = a ? c : d;
*p = a;
}
```
or the even more general:
```
void src(int s, int a, int b, int *c, int *d) {
if (s)
*c = a;
else
*d = b;
}
void tgt(int s, int a, int b, int *c, int *d) {
int *p = s ? c : d;
int v = s ? a : b;
*p = v;
}
```
https://github.com/llvm/llvm-project/pull/108812
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