[Bug target/51996] ICE in extract_insn gcc.dg/pr48335-5.c
rguenth at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Wed Jan 25 12:48:00 GMT 2012
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51996
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-01-25
CC|rguenther at suse dot de |rguenth at gcc dot gnu.org
Component|regression |target
Ever Confirmed|0 |1
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-25 12:29:49 UTC ---
Looks like a target bug to me, needs -O -mfpu=neon -mfloat-abi=softfp to
trigger.
typedef long long T __attribute__((may_alias));
struct S
{
_Complex float d __attribute__((aligned (8)));
};
int
f1 (struct S x)
{
struct S s = x;
return *(T *) &s.d;
}
expands from
f1 (struct S x)
{
T D.4964;
int D.4957;
<bb 2>:
D.4964_1 = VIEW_CONVERT_EXPR<T>(x);
D.4957_3 = (int) D.4964_1;
return D.4957_3;
}
and the target emits
(insn 9 0 0 (set (reg:DI 140)
(unspec:DI [
(mem/s/c:DI (plus:SI (reg/f:SI 129 virtual-stack-vars)
(const_int -8 [0xfffffffffffffff8])) [0 S8 A32])
] UNSPEC_MISALIGNED_ACCESS)) t.c:11 -1
(nil))
for a DImode movmisalign of
(mem/s/c:SC (plus:SI (reg/f:SI 129 virtual-stack-vars)
(const_int -8 [0xfffffffffffffff8])) [0 S8 A32])
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