https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123765
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|bpf-unknown-none |bpf-unknown-none aarch64
Status|UNCONFIRMED |NEW
Component|target |middle-end
Last reconfirmed| |2026-01-22
Keywords| |wrong-code
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Happens on aarch64 with `-O1 -mstrict-align -mgeneral-regs-only` and the
following testcase:
```
typedef int vec __attribute__((vector_size(2*4*sizeof(int))));
typedef unsigned uvec __attribute__((vector_size(2*4*sizeof(int))));
void h(vec*p,uvec*q){
vec a = *p;
*q = (uvec)a;
}
```
Produces:
```
ldp x2, x3, [x0] // tmp108, *p_3(D)
stp x2, x3, [x1] // tmp108, *q_5(D)
ldp x2, x3, [x0, 16] // *p_3(D), *p_3(D)
stp x2, x3, [x1, 16] // *p_3(D), *q_5(D)
```
Notice the overlap.
