https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114711
Bug ID: 114711
Summary: Missed optimization: fold load of global constant
array if there is obivous pattern
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: xxs_chy at outlook dot com
Target Milestone: ---
Godbolt link: https://godbolt.org/z/MMxoGaj9T
```
static char* const names[3] = {"abc", "cdf", "dsadsa"};
char** const id2name[3] = {names, names + 1, names + 2};
void* src(size_t idx){
return id2name[idx];
}
```
can be folded to:
```
static char* const names[3] = {"abc", "cdf", "dsadsa"};
void* tgt(size_t idx){
return names + idx;
}
```
This is a real pattern from openssl.
