https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111384
--- Comment #2 from Siarhei Volkau <lis8215 at gmail dot com> ---
Well what the godbolt says with -O2 -fomit-frame-pointer.
ARM:
uxth r0, r0 @ << zero extend
strh r0, [r1]
strh r0, [r2]
bx lr
ARM64:
and w0, w0, 65535 @ << zero extend
strh w0, [x1]
strh w0, [x2]
ret
MIPS64:
andi $4,$4,0xffff @ << zero extend
sh $4,0($5)
jr $31
sh $4,0($6)
MRISC32:
shuf r1, r1, #2888 @ << zero extend
sth r1, [r2]
sth r1, [r3]
ret
RISC-V:
slli a0,a0,16 @ << zero extend
srli a0,a0,16 @ << zero extend
sh a0,0(a1)
sh a0,0(a2)
ret
RISC-V (64-bit):
slli a0,a0,48 @ << zero extend
srli a0,a0,48 @ << zero extend
sh a0,0(a1)
sh a0,0(a2)
ret
Xtensa ESP32:
entry sp, 32
extui a2, a2, 0, 16 @ << zero extend
s16i a2, a3, 0
s16i a2, a4, 0
retw.n
Loongarch64:
bstrpick.w $r4,$r4,15,0 @ << zero extend
st.h $r4,$r5,0
st.h $r4,$r6,0
jr $r1
MIPS:
andi $4,$4,0xffff @ << zero extend
sh $4,0($5)
jr $31
sh $4,0($6)
SH:
extu.w r4,r4 @ << zero extend
mov.w r4,@r5
rts
mov.w r4,@r6
Other available at godbolt (x86-64/Power/Power64/s390) unaffected.
