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[Bug target/29884] gcc-4.1.1, gcc-4.0.1 generate segfaulting SSE code
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 18 Nov 2006 11:07:16 -0000
- Subject: [Bug target/29884] gcc-4.1.1, gcc-4.0.1 generate segfaulting SSE code
- References: <bug-29884-13529@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #4 from pinskia at gcc dot gnu dot org 2006-11-18 11:07 -------
963 v_r_signal_L.v = *(vFloat *)&signal_spectrum_L[bin_number];
(gdb) p signal_spectrum_L
$1 = (AUDIO_DATA_TYPE *) 0x80491e0
(gdb) p bin_number
$2 = 1
(gdb) p &signal_spectrum_L[bin_number]
$3 = (AUDIO_DATA_TYPE *) 0x80491e4
This is not a bug, the alignment requirement for vector loads are 16byte
aligned and you just violated that.
You should use the SSE intrinsics for unaligned loads here.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29884