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target/i386: Remove compilation errors when -Werror=maybe-uninitialized 

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.auger@redhat.com>

Message-Id: <20221222140158.1260748-1-eric.auger@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
master
Eric Auger 2022-12-22 15:01:58 +01:00 committed by Paolo Bonzini
parent f39b7d2b96
commit c0a6665c3c
1 changed files with 4 additions and 0 deletions
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4
target/i386/ops_sse.h
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@ -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;