https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110170
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-linux-gnu
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note for aarch64, we do produce conditional moves but only when there is a
loop.
That is:
```
__attribute__((noinline))
void __cond_swap(double* __x, double* __y) {
for(int i = 0; i < 100; i++, __x++, __y++) {
double __r = (*__x < *__y);
double __tmp = __r ? *__x : *__y;
*__y = __r ? *__y : *__x;
*__x = __tmp;
}
}
```
Produces:
```
.L3:
ldr d31, [x0, x2]
ldr d30, [x1, x2]
fcmpe d31, d30
fcsel d29, d30, d31, mi
fcsel d31, d31, d30, mi
str d29, [x1, x2]
str d31, [x0, x2]
add x2, x2, 8
cmp x2, 800
bne .L3
```
Otherwise it will duplicate the return basic block (which is expected).
So this is a x86_64 specific issue.
