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* [Bug tree-optimization/51580] New: [4.7 regression] segfault during loop vectorization at -O3 @ 2011-12-16 15:14 ebotcazou at gcc dot gnu.org 2011-12-19 15:59 ` [Bug tree-optimization/51580] " jakub at gcc dot gnu.org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: ebotcazou at gcc dot gnu.org @ 2011-12-16 15:14 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51580 Bug #: 51580 Summary: [4.7 regression] segfault during loop vectorization at -O3 Classification: Unclassified Product: gcc Version: 4.7.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned@gcc.gnu.org ReportedBy: ebotcazou@gcc.gnu.org Target: i[345]86-*-* Created attachment 26110 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26110 Testcase to be gnatchop'ed The problem was introduced yesterday. Compile loop_optimization1.ads at -O3 for an x86 target and you'll get: Program received signal SIGSEGV, Segmentation fault. flow_bb_inside_loop_p (loop=0xf7ca1bb8, bb=0x0) at /home/eric/svn/gcc/gcc/cfgloop.c:776 776 source_loop = bb->loop_father; (gdb) bt #0 flow_bb_inside_loop_p (loop=0xf7ca1bb8, bb=0x0) at /home/eric/svn/gcc/gcc/cfgloop.c:776 #1 0x08b5a922 in vect_stmt_relevant_p (stmt=stmt@entry=0xf7c9c0c0, relevant=relevant@entry=0xffffcc4c, live_p=live_p@entry=0xffffcc47, loop_vinfo=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /home/eric/svn/gcc/gcc/tree-vect-stmts.c:260 #2 0x08b605c9 in vect_mark_stmts_to_be_vectorized (loop_vinfo=0x9cdc988) at /home/eric/svn/gcc/gcc/tree-vect-stmts.c:552 #3 0x08b7ad7d in vect_analyze_loop_2 (loop_vinfo=0x9cdc988) at /home/eric/svn/gcc/gcc/tree-vect-loop.c:1521 #4 vect_analyze_loop (loop=0xf7ca1bb8) at /home/eric/svn/gcc/gcc/tree-vect-loop.c:1667 #5 0x08b8cc08 in vectorize_loops () at /home/eric/svn/gcc/gcc/tree-vectorizer.c:203 The testcase can be added to the testsuite as gnat.dg/specs/loop_optimization1.ads gnat.dg/specs/loop_optimization1_pkg.ad[sb] ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/51580] [4.7 regression] segfault during loop vectorization at -O3 2011-12-16 15:14 [Bug tree-optimization/51580] New: [4.7 regression] segfault during loop vectorization at -O3 ebotcazou at gcc dot gnu.org @ 2011-12-19 15:59 ` jakub at gcc dot gnu.org 2011-12-19 19:20 ` ebotcazou at gcc dot gnu.org 2011-12-19 19:32 ` ebotcazou at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: jakub at gcc dot gnu.org @ 2011-12-19 15:59 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51580 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-12-19 15:53:37 UTC --- Please recheck with current trunk - http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182480 or later. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/51580] [4.7 regression] segfault during loop vectorization at -O3 2011-12-16 15:14 [Bug tree-optimization/51580] New: [4.7 regression] segfault during loop vectorization at -O3 ebotcazou at gcc dot gnu.org 2011-12-19 15:59 ` [Bug tree-optimization/51580] " jakub at gcc dot gnu.org @ 2011-12-19 19:20 ` ebotcazou at gcc dot gnu.org 2011-12-19 19:32 ` ebotcazou at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: ebotcazou at gcc dot gnu.org @ 2011-12-19 19:20 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51580 --- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-12-19 19:17:15 UTC --- Author: ebotcazou Date: Mon Dec 19 19:17:10 2011 New Revision: 182491 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182491 Log: PR tree-optimization/51580 * gnat.dg/specs/loop_optimization1.ads: New test. * gnat.dg/specs/loop_optimization1_pkg.ad[sb]: New helper. Added: trunk/gcc/testsuite/gnat.dg/specs/loop_optimization1.ads trunk/gcc/testsuite/gnat.dg/specs/loop_optimization1_pkg.adb trunk/gcc/testsuite/gnat.dg/specs/loop_optimization1_pkg.ads Modified: trunk/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/51580] [4.7 regression] segfault during loop vectorization at -O3 2011-12-16 15:14 [Bug tree-optimization/51580] New: [4.7 regression] segfault during loop vectorization at -O3 ebotcazou at gcc dot gnu.org 2011-12-19 15:59 ` [Bug tree-optimization/51580] " jakub at gcc dot gnu.org 2011-12-19 19:20 ` ebotcazou at gcc dot gnu.org @ 2011-12-19 19:32 ` ebotcazou at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: ebotcazou at gcc dot gnu.org @ 2011-12-19 19:32 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51580 Eric Botcazou <ebotcazou at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |FIXED Target Milestone|--- |4.7.0 --- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-12-19 19:19:07 UTC --- > Please recheck with current trunk - > http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182480 or later. Yep, that did it, thanks. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2011-12-19 19:20 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-12-16 15:14 [Bug tree-optimization/51580] New: [4.7 regression] segfault during loop vectorization at -O3 ebotcazou at gcc dot gnu.org 2011-12-19 15:59 ` [Bug tree-optimization/51580] " jakub at gcc dot gnu.org 2011-12-19 19:20 ` ebotcazou at gcc dot gnu.org 2011-12-19 19:32 ` ebotcazou at gcc dot gnu.org
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