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* [Bug tree-optimization/44913] [4.6 Regression] -ftree-vectorize causes FAIL: gcc.dg/pr44838.c execution test [not found] <bug-44913-4@http.gcc.gnu.org/bugzilla/> @ 2010-10-14 10:38 ` rguenth at gcc dot gnu.org 2010-10-14 15:52 ` rguenth at gcc dot gnu.org 2010-10-14 15:55 ` rguenth at gcc dot gnu.org 2 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu.org @ 2010-10-14 10:38 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44913 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> 2010-10-14 10:38:45 UTC --- Mine. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/44913] [4.6 Regression] -ftree-vectorize causes FAIL: gcc.dg/pr44838.c execution test [not found] <bug-44913-4@http.gcc.gnu.org/bugzilla/> 2010-10-14 10:38 ` [Bug tree-optimization/44913] [4.6 Regression] -ftree-vectorize causes FAIL: gcc.dg/pr44838.c execution test rguenth at gcc dot gnu.org @ 2010-10-14 15:52 ` rguenth at gcc dot gnu.org 2010-10-14 15:55 ` rguenth at gcc dot gnu.org 2 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu.org @ 2010-10-14 15:52 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44913 --- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-10-14 15:51:22 UTC --- Author: rguenth Date: Thu Oct 14 15:51:15 2010 New Revision: 165473 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165473 Log: 2010-10-14 Richard Guenther <rguenther@suse.de> PR tree-optimization/44913 * tree-data-ref.c (disjoint_objects_p): Remove. (dr_may_alias_p): Simplify. Only hand the base object to the alias-oracle. * tree-ssa-alias.c (ptr_deref_may_alias_decl_p): Handle some more trees, bail out instead of asserting. (ptr_derefs_may_alias_p): Likewise. Export. (refs_may_alias_p_1): Handle STRING_CSTs. * tree-ssa-alias.h (ptr_derefs_may_alias_p): Declare. * gcc.dg/torture/pr44913.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/torture/pr44913.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-data-ref.c trunk/gcc/tree-ssa-alias.c trunk/gcc/tree-ssa-alias.h ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/44913] [4.6 Regression] -ftree-vectorize causes FAIL: gcc.dg/pr44838.c execution test [not found] <bug-44913-4@http.gcc.gnu.org/bugzilla/> 2010-10-14 10:38 ` [Bug tree-optimization/44913] [4.6 Regression] -ftree-vectorize causes FAIL: gcc.dg/pr44838.c execution test rguenth at gcc dot gnu.org 2010-10-14 15:52 ` rguenth at gcc dot gnu.org @ 2010-10-14 15:55 ` rguenth at gcc dot gnu.org 2 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu.org @ 2010-10-14 15:55 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44913 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> 2010-10-14 15:55:34 UTC --- Fixed. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/44913] New: [4.6 Regression] -ftree-vectorize causes FAIL: gcc.dg/pr44838.c execution test @ 2010-07-11 19:40 zsojka at seznam dot cz 2010-07-11 21:58 ` [Bug tree-optimization/44913] " rguenth at gcc dot gnu dot org ` (3 more replies) 0 siblings, 4 replies; 7+ messages in thread From: zsojka at seznam dot cz @ 2010-07-11 19:40 UTC (permalink / raw) To: gcc-bugs Command line: $ gcc -O[123] -ftree-vectorize gcc.dg/pr44838.c && ./a.out Output: $ /mnt/svn/gcc-trunk/binary-162056-lto-fortran-checking-yes-rtl-df/bin/gcc -O1 -ftree-vectorize pr44838.i $ ./a.out Aborted Tested revisions: r162056 - fail r161659 - fail r161170 - OK -- Summary: [4.6 Regression] -ftree-vectorize causes FAIL: gcc.dg/pr44838.c execution test Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: zsojka at seznam dot cz GCC host triplet: x86_64-pc-linux-gnu GCC target triplet: x86_64-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44913 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/44913] [4.6 Regression] -ftree-vectorize causes FAIL: gcc.dg/pr44838.c execution test 2010-07-11 19:40 [Bug tree-optimization/44913] New: " zsojka at seznam dot cz @ 2010-07-11 21:58 ` rguenth at gcc dot gnu dot org 2010-07-11 23:11 ` hjl dot tools at gmail dot com ` (2 subsequent siblings) 3 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu dot org @ 2010-07-11 21:58 UTC (permalink / raw) To: gcc-bugs -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |wrong-code Target Milestone|--- |4.6.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44913 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/44913] [4.6 Regression] -ftree-vectorize causes FAIL: gcc.dg/pr44838.c execution test 2010-07-11 19:40 [Bug tree-optimization/44913] New: " zsojka at seznam dot cz 2010-07-11 21:58 ` [Bug tree-optimization/44913] " rguenth at gcc dot gnu dot org @ 2010-07-11 23:11 ` hjl dot tools at gmail dot com 2010-07-23 12:35 ` rguenth at gcc dot gnu dot org 2010-08-23 9:29 ` jakub at gcc dot gnu dot org 3 siblings, 0 replies; 7+ messages in thread From: hjl dot tools at gmail dot com @ 2010-07-11 23:11 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from hjl dot tools at gmail dot com 2010-07-11 23:11 ------- This is caused by revision 161655: http://gcc.gnu.org/ml/gcc-cvs/2010-07/msg00006.html -- hjl dot tools at gmail dot com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rguenth at gcc dot gnu dot | |org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44913 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/44913] [4.6 Regression] -ftree-vectorize causes FAIL: gcc.dg/pr44838.c execution test 2010-07-11 19:40 [Bug tree-optimization/44913] New: " zsojka at seznam dot cz 2010-07-11 21:58 ` [Bug tree-optimization/44913] " rguenth at gcc dot gnu dot org 2010-07-11 23:11 ` hjl dot tools at gmail dot com @ 2010-07-23 12:35 ` rguenth at gcc dot gnu dot org 2010-08-23 9:29 ` jakub at gcc dot gnu dot org 3 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu dot org @ 2010-07-23 12:35 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from rguenth at gcc dot gnu dot org 2010-07-23 12:35 ------- Confirmed. We end up vectorizing void foo (int *a, int n) { int *lasta = a + n; for (; a != lasta; a++) { *a *= 2; a[1] = a[-1] + a[-2]; } } not seeing the dependence of *a vs a[-1] because via initialize_data_dependence_relation we ask the alias-oracle whether *a may alias a[-1] (which it doesn't). So we end up not computing a dependence distance. May we not use the alias-oracle (on the full ref) here? -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |spop at gcc dot gnu dot org Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2010-07-23 12:35:43 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44913 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/44913] [4.6 Regression] -ftree-vectorize causes FAIL: gcc.dg/pr44838.c execution test 2010-07-11 19:40 [Bug tree-optimization/44913] New: " zsojka at seznam dot cz ` (2 preceding siblings ...) 2010-07-23 12:35 ` rguenth at gcc dot gnu dot org @ 2010-08-23 9:29 ` jakub at gcc dot gnu dot org 3 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu dot org @ 2010-08-23 9:29 UTC (permalink / raw) To: gcc-bugs -- jakub at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P1 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44913 ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2010-10-14 15:55 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- [not found] <bug-44913-4@http.gcc.gnu.org/bugzilla/> 2010-10-14 10:38 ` [Bug tree-optimization/44913] [4.6 Regression] -ftree-vectorize causes FAIL: gcc.dg/pr44838.c execution test rguenth at gcc dot gnu.org 2010-10-14 15:52 ` rguenth at gcc dot gnu.org 2010-10-14 15:55 ` rguenth at gcc dot gnu.org 2010-07-11 19:40 [Bug tree-optimization/44913] New: " zsojka at seznam dot cz 2010-07-11 21:58 ` [Bug tree-optimization/44913] " rguenth at gcc dot gnu dot org 2010-07-11 23:11 ` hjl dot tools at gmail dot com 2010-07-23 12:35 ` rguenth at gcc dot gnu dot org 2010-08-23 9:29 ` jakub at gcc dot gnu dot org
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