public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug target/47975] New: ICE: in expand_shift, at expmed.c:2299 when using 256b vectors without -mavx
@ 2011-03-03 15:30 zsojka at seznam dot cz
2011-03-03 16:01 ` [Bug target/47975] " rguenth at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: zsojka at seznam dot cz @ 2011-03-03 15:30 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47975
Summary: ICE: in expand_shift, at expmed.c:2299 when using 256b
vectors without -mavx
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: zsojka@seznam.cz
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 23533
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23533
reduced testcase
$ gcc testcase.c
testcase.c: In function 'foo':
testcase.c:6:5: internal compiler error: in expand_shift, at expmed.c:2299
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ gcc-4.5.2 testcase.c
testcase.c: In function 'foo':
testcase.c:6:5: error: invalid operands to binary << (have '__vector(8) int'
and '__vector(8) int')
Tested revisions:
r170622 - crash
4.5 - code is rejected
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug target/47975] ICE: in expand_shift, at expmed.c:2299 when using 256b vectors without -mavx
2011-03-03 15:30 [Bug target/47975] New: ICE: in expand_shift, at expmed.c:2299 when using 256b vectors without -mavx zsojka at seznam dot cz
@ 2011-03-03 16:01 ` rguenth at gcc dot gnu.org
2011-03-03 16:19 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-03-03 16:01 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47975
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2011.03.03 16:01:27
Ever Confirmed|0 |1
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-03 16:01:27 UTC ---
Confirmed.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug target/47975] ICE: in expand_shift, at expmed.c:2299 when using 256b vectors without -mavx
2011-03-03 15:30 [Bug target/47975] New: ICE: in expand_shift, at expmed.c:2299 when using 256b vectors without -mavx zsojka at seznam dot cz
2011-03-03 16:01 ` [Bug target/47975] " rguenth at gcc dot gnu.org
@ 2011-03-03 16:19 ` rguenth at gcc dot gnu.org
2011-03-03 16:22 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-03-03 16:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47975
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-03 16:19:23 UTC ---
We lower the vector - vector shift to
<bb 2>:
x.0_1 = x;
x.1_2 = x;
D.2689_4 = BIT_FIELD_REF <x.0_1, 128, 0>;
D.2690_5 = BIT_FIELD_REF <x.1_2, 128, 0>;
D.2691_6 = D.2689_4 << D.2690_5;
D.2692_7 = BIT_FIELD_REF <x.0_1, 128, 128>;
D.2693_8 = BIT_FIELD_REF <x.1_2, 128, 128>;
D.2694_9 = D.2692_7 << D.2693_8;
x.2_3 = {D.2691_6, D.2694_9};
x = x.2_3;
return;
but do not lower that shift further because type_for_widest_vector_mode
calls optab_handler with ashl_optab which happens because in
optab_for_tree_code
we have
case LSHIFT_EXPR:
if (VECTOR_MODE_P (TYPE_MODE (type)))
{
if (subtype == optab_vector)
return TYPE_SATURATING (type) ? NULL : vashl_optab;
gcc_assert (subtype == optab_scalar);
}
if (TYPE_SATURATING(type))
return TYPE_UNSIGNED(type) ? usashl_optab : ssashl_optab;
return ashl_optab;
and we have ...
#define TYPE_MODE(NODE) \
(TREE_CODE (TYPE_CHECK (NODE)) == VECTOR_TYPE \
? vector_type_mode (NODE) : (NODE)->type.mode)
which returns BLKmode instead of V8SImode. Bah to whoever introduced
that hack to TYPE_MODE.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug target/47975] ICE: in expand_shift, at expmed.c:2299 when using 256b vectors without -mavx
2011-03-03 15:30 [Bug target/47975] New: ICE: in expand_shift, at expmed.c:2299 when using 256b vectors without -mavx zsojka at seznam dot cz
2011-03-03 16:01 ` [Bug target/47975] " rguenth at gcc dot gnu.org
2011-03-03 16:19 ` rguenth at gcc dot gnu.org
@ 2011-03-03 16:22 ` rguenth at gcc dot gnu.org
2011-03-04 10:27 ` rguenth at gcc dot gnu.org
2011-03-04 10:28 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-03-03 16:22 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47975
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org
|gnu.org |
--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-03 16:21:51 UTC ---
I have a patch.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug target/47975] ICE: in expand_shift, at expmed.c:2299 when using 256b vectors without -mavx
2011-03-03 15:30 [Bug target/47975] New: ICE: in expand_shift, at expmed.c:2299 when using 256b vectors without -mavx zsojka at seznam dot cz
` (2 preceding siblings ...)
2011-03-03 16:22 ` rguenth at gcc dot gnu.org
@ 2011-03-04 10:27 ` rguenth at gcc dot gnu.org
2011-03-04 10:28 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-03-04 10:27 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47975
--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-04 10:27:17 UTC ---
Author: rguenth
Date: Fri Mar 4 10:27:10 2011
New Revision: 170672
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170672
Log:
2011-03-04 Richard Guenther <rguenther@suse.de>
PR middle-end/47975
* optabs.c (optab_for_tree_code): Do not use VECTOR_MODE_P.
* gcc.dg/torture/pr47975.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr47975.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/optabs.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug target/47975] ICE: in expand_shift, at expmed.c:2299 when using 256b vectors without -mavx
2011-03-03 15:30 [Bug target/47975] New: ICE: in expand_shift, at expmed.c:2299 when using 256b vectors without -mavx zsojka at seznam dot cz
` (3 preceding siblings ...)
2011-03-04 10:27 ` rguenth at gcc dot gnu.org
@ 2011-03-04 10:28 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-03-04 10:28 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47975
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-04 10:27:51 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2011-03-04 10:28 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-03-03 15:30 [Bug target/47975] New: ICE: in expand_shift, at expmed.c:2299 when using 256b vectors without -mavx zsojka at seznam dot cz
2011-03-03 16:01 ` [Bug target/47975] " rguenth at gcc dot gnu.org
2011-03-03 16:19 ` rguenth at gcc dot gnu.org
2011-03-03 16:22 ` rguenth at gcc dot gnu.org
2011-03-04 10:27 ` rguenth at gcc dot gnu.org
2011-03-04 10:28 ` rguenth at gcc dot gnu.org
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).