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* [Bug middle-end/50731] New: [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c
@ 2011-10-14 16:42 hjl.tools at gmail dot com
2011-10-14 16:43 ` [Bug middle-end/50731] " hjl.tools at gmail dot com
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: hjl.tools at gmail dot com @ 2011-10-14 16:42 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50731
Bug #: 50731
Summary: [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: hjl.tools@gmail.com
On Linux/x86, revision 179959 gave
FAIL: gcc.dg/torture/vector-shift2.c -O0 execution test
Revision 179912 is OK.
^ permalink raw reply [flat|nested] 9+ messages in thread* [Bug middle-end/50731] [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c 2011-10-14 16:42 [Bug middle-end/50731] New: [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c hjl.tools at gmail dot com @ 2011-10-14 16:43 ` hjl.tools at gmail dot com 2011-10-15 8:58 ` rguenth at gcc dot gnu.org ` (6 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: hjl.tools at gmail dot com @ 2011-10-14 16:43 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50731 --- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2011-10-14 16:42:37 UTC --- Revision 179952 is OK. ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/50731] [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c 2011-10-14 16:42 [Bug middle-end/50731] New: [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c hjl.tools at gmail dot com 2011-10-14 16:43 ` [Bug middle-end/50731] " hjl.tools at gmail dot com @ 2011-10-15 8:58 ` rguenth at gcc dot gnu.org 2011-10-17 17:26 ` ubizjak at gmail dot com ` (5 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: rguenth at gcc dot gnu.org @ 2011-10-15 8:58 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50731 Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2011-10-15 Target Milestone|--- |4.7.0 Ever Confirmed|0 |1 --- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-15 08:58:20 UTC --- Confirmed. ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/50731] [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c 2011-10-14 16:42 [Bug middle-end/50731] New: [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c hjl.tools at gmail dot com 2011-10-14 16:43 ` [Bug middle-end/50731] " hjl.tools at gmail dot com 2011-10-15 8:58 ` rguenth at gcc dot gnu.org @ 2011-10-17 17:26 ` ubizjak at gmail dot com 2011-10-24 17:39 ` ubizjak at gmail dot com ` (4 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: ubizjak at gmail dot com @ 2011-10-17 17:26 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50731 Uros Bizjak <ubizjak at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rth at gcc dot gnu.org --- Comment #3 from Uros Bizjak <ubizjak at gmail dot com> 2011-10-17 17:25:53 UTC --- CC'd author of suspected commit. ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/50731] [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c 2011-10-14 16:42 [Bug middle-end/50731] New: [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c hjl.tools at gmail dot com ` (2 preceding siblings ...) 2011-10-17 17:26 ` ubizjak at gmail dot com @ 2011-10-24 17:39 ` ubizjak at gmail dot com 2011-10-27 11:01 ` rguenth at gcc dot gnu.org ` (3 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: ubizjak at gmail dot com @ 2011-10-24 17:39 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50731 --- Comment #4 from Uros Bizjak <ubizjak at gmail dot com> 2011-10-24 17:39:09 UTC --- Revision 179958 FAILs. ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/50731] [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c 2011-10-14 16:42 [Bug middle-end/50731] New: [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c hjl.tools at gmail dot com ` (3 preceding siblings ...) 2011-10-24 17:39 ` ubizjak at gmail dot com @ 2011-10-27 11:01 ` rguenth at gcc dot gnu.org 2011-10-27 11:39 ` rguenth at gcc dot gnu.org ` (2 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: rguenth at gcc dot gnu.org @ 2011-10-27 11:01 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50731 Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P1 Status|NEW |ASSIGNED AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org |gnu.org | --- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-27 11:00:49 UTC --- I suppose it's just completely optimized away at -O1+ and thus broken unconditionally. Shift lowering gives us vuchar_1 = { 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4 }; vchar0_2 = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }; vchar1_3 = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }; D.2720_7 = BIT_FIELD_REF <vchar1_3, 8, 0>; D.2721_8 = D.2720_7 << 1; D.2722_9 = BIT_FIELD_REF <vchar1_3, 8, 8>; D.2723_10 = 1; D.2724_11 = BIT_FIELD_REF <D.2723_10, 8, 8>; and that last two lines already look completely bogus... We are lowering from vuchar_1 = { 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4 }; vchar0_2 = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }; vchar1_3 = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }; i1.0_4 = vchar1_3 << 1; i1 = i1.0_4; D.2714_5 = BIT_FIELD_REF <i1, 8, 8>; but the generic binary lowering and do_binop do not handle a scalar RHS separately but do static tree do_binop (gimple_stmt_iterator *gsi, tree inner_type, tree a, tree b, tree bitpos, tree bitsize, enum tree_code code) { a = tree_vec_extract (gsi, inner_type, a, bitsize, bitpos); b = tree_vec_extract (gsi, inner_type, b, bitsize, bitpos); return gimplify_build2 (gsi, code, inner_type, a, b); that of course only works for element 0. We came here via gcc_assert (code != VEC_LSHIFT_EXPR && code != VEC_RSHIFT_EXPR); new_rhs = expand_vector_operation (gsi, type, compute_type, stmt, code); (gdb) p code $6 = LSHIFT_EXPR Fixing it in do_binop like static tree do_binop (gimple_stmt_iterator *gsi, tree inner_type, tree a, tree b, tree bitpos, tree bitsize, enum tree_code code) { if (TREE_CODE (TREE_TYPE (a)) == VECTOR_TYPE) a = tree_vec_extract (gsi, inner_type, a, bitsize, bitpos); if (TREE_CODE (TREE_TYPE (b)) == VECTOR_TYPE) b = tree_vec_extract (gsi, inner_type, b, bitsize, bitpos); return gimplify_build2 (gsi, code, inner_type, a, b); is easiest. ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/50731] [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c 2011-10-14 16:42 [Bug middle-end/50731] New: [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c hjl.tools at gmail dot com ` (4 preceding siblings ...) 2011-10-27 11:01 ` rguenth at gcc dot gnu.org @ 2011-10-27 11:39 ` rguenth at gcc dot gnu.org 2011-10-27 12:13 ` rguenth at gcc dot gnu.org 2011-10-27 12:13 ` rguenth at gcc dot gnu.org 7 siblings, 0 replies; 9+ messages in thread From: rguenth at gcc dot gnu.org @ 2011-10-27 11:39 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50731 Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |dnovillo at gcc dot gnu.org --- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-27 11:38:48 UTC --- *** Bug 50843 has been marked as a duplicate of this bug. *** ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/50731] [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c 2011-10-14 16:42 [Bug middle-end/50731] New: [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c hjl.tools at gmail dot com ` (5 preceding siblings ...) 2011-10-27 11:39 ` rguenth at gcc dot gnu.org @ 2011-10-27 12:13 ` rguenth at gcc dot gnu.org 2011-10-27 12:13 ` rguenth at gcc dot gnu.org 7 siblings, 0 replies; 9+ messages in thread From: rguenth at gcc dot gnu.org @ 2011-10-27 12:13 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50731 Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED --- Comment #8 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-27 12:11:57 UTC --- Fixed. ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/50731] [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c 2011-10-14 16:42 [Bug middle-end/50731] New: [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c hjl.tools at gmail dot com ` (6 preceding siblings ...) 2011-10-27 12:13 ` rguenth at gcc dot gnu.org @ 2011-10-27 12:13 ` rguenth at gcc dot gnu.org 7 siblings, 0 replies; 9+ messages in thread From: rguenth at gcc dot gnu.org @ 2011-10-27 12:13 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50731 --- Comment #7 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-27 12:11:04 UTC --- Author: rguenth Date: Thu Oct 27 12:10:57 2011 New Revision: 180564 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180564 Log: 2010-10-27 Richard Guenther <rguenther@suse.de> PR middle-end/50731 * tree-vect-generic.c (do_binop): Handle scalar operands. Modified: trunk/gcc/ChangeLog trunk/gcc/tree-vect-generic.c ^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2011-10-27 12:13 UTC | newest] Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-10-14 16:42 [Bug middle-end/50731] New: [4.7 Regression] FAIL: gcc.dg/torture/vector-shift2.c hjl.tools at gmail dot com 2011-10-14 16:43 ` [Bug middle-end/50731] " hjl.tools at gmail dot com 2011-10-15 8:58 ` rguenth at gcc dot gnu.org 2011-10-17 17:26 ` ubizjak at gmail dot com 2011-10-24 17:39 ` ubizjak at gmail dot com 2011-10-27 11:01 ` rguenth at gcc dot gnu.org 2011-10-27 11:39 ` rguenth at gcc dot gnu.org 2011-10-27 12:13 ` rguenth at gcc dot gnu.org 2011-10-27 12:13 ` rguenth at gcc dot gnu.org
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