http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49411
Summary: [4.6/4.7] ICE: unrecognizable insn with -mxop in
_mm_roti_epi8 with negative number
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: qne...@gcc.gnu.org
Using _mm_roti_epi8 in xopintrin.h with a negative number produces an ICE in
4.6/4.7; the negative number is how you use VPROT[BWDQ] to rotate right, see
http://support.amd.com/us/Processor_TechDocs/26568.pdf
------ testcase.c ------
#include <x86intrin.h>
void f(void)
{
__m128 s;
__m128i d;
return _mm_roti_epi8(s, -1);
}
------ output ------
$ gcc -mxop -c vprotbi1.c
vprotbi1.c: In function ‘f’:
vprotbi1.c:6:2: warning: ‘return’ with a value, in function returning void
[enabled by default]
vprotbi1.c:7:1: error: unrecognizable insn:
(insn 6 5 7 3 (set (reg:V16QI 60 [ D.8650 ])
(rotate:V16QI (reg:V16QI 59 [ D.8648 ])
(const_int -1 [0xffffffffffffffff]))) vprotbi1.c:6 -1
(nil))
vprotbi1.c:7:1: internal compiler error: in extract_insn, at recog.c:2113
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
