To avoid compilation errors when -Werror=maybe-uninitialized is used,
add a default case with g_assert_not_reached().
Otherwise with GCC 11.3.1 "cc (GCC) 11.3.1 20220421 (Red Hat 11.3.1-2)"
we get:
../target/i386/ops_sse.h: In function ‘helper_vpermdq_ymm’:
../target/i386/ops_sse.h:2495:13: error: ‘r3’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
2495 | d->Q(3) = r3;
| ~~~~~~~~^~~~
../target/i386/ops_sse.h:2494:13: error: ‘r2’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
2494 | d->Q(2) = r2;
| ~~~~~~~~^~~~
../target/i386/ops_sse.h:2493:13: error: ‘r1’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
2493 | d->Q(1) = r1;
| ~~~~~~~~^~~~
../target/i386/ops_sse.h:2492:13: error: ‘r0’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
2492 | d->Q(0) = r0;
| ~~~~~~~~^~~~
Signed-off-by: Eric Auger <eric.au...@redhat.com>
---
v2 -> v3:
- use g_assert_not_reached() and document the compiler in use
---
target/i386/ops_sse.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/target/i386/ops_sse.h b/target/i386/ops_sse.h
index 3cbc36a59d..0bd6bfad8a 100644
--- a/target/i386/ops_sse.h
+++ b/target/i386/ops_sse.h
@@ -2470,6 +2470,8 @@ void helper_vpermdq_ymm(Reg *d, Reg *v, Reg *s, uint32_t
order)
r0 = s->Q(2);
r1 = s->Q(3);
break;
+ default: /* default case added to help the compiler to avoid warnings */
+ g_assert_not_reached();
}
switch ((order >> 4) & 3) {
case 0:
@@ -2488,6 +2490,8 @@ void helper_vpermdq_ymm(Reg *d, Reg *v, Reg *s, uint32_t
order)
r2 = s->Q(2);
r3 = s->Q(3);
break;
+ default: /* default case added to help the compiler to avoid warnings */
+ g_assert_not_reached();
}
d->Q(0) = r0;
d->Q(1) = r1;
--
2.37.3
