https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122592
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2025-11-07
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This all depends also on the abi.
For Darwin ABI clang trunk produces:
```
_x:
rev16 w8, w1
cmp w0, #0
csel w8, w1, w8, eq
add w0, w8, w2
ret
```
For the windows ABI clang trunk produces:
```
x:
rev w8, w1
cmp w0, #0
lsr w8, w8, #16
csel w8, w1, w8, eq
and w8, w8, #0xffff
add w0, w8, w2, uxth
ret
```
For the standard elf abi clang trunk produces:
```
x:
rev w8, w1
cmp w0, #0
lsr w8, w8, #16
csel w8, w1, w8, eq
and w8, w8, #0xffff
add w0, w8, w2, uxth
ret
```
As mentioned gcc trunk produces:
```
x:
and w3, w1, 65535
rev16 w1, w1
cmp w0, 0
and w1, w1, 65535
csel w3, w3, w1, eq
add w0, w3, w2, uxth
ret
```
there is one extra and here I think which could go after the csel.
