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* [Bug tree-optimization/39829] New: [4.5 Regression] ICE with some code that produces VCE @ 2009-04-20 23:50 pinskia at gcc dot gnu dot org 2009-04-20 23:51 ` [Bug tree-optimization/39829] " pinskia at gcc dot gnu dot org ` (5 more replies) 0 siblings, 6 replies; 7+ messages in thread From: pinskia at gcc dot gnu dot org @ 2009-04-20 23:50 UTC (permalink / raw) To: gcc-bugs A simple testcase: void foo (void * DAG_temp117584) { char uA; void* pA; void* pB; void* pC; do { int DAG_temp117585; int DAG_temp117586; void ** __indir_union1 = (void**)DAG_temp117584; DAG_temp117585 = *__indir_union1; DAG_temp117586 = DAG_temp117585; if ( DAG_temp117586 != (int)268435456 ) pA = (void*)&uA; pB = (void*)&pA; pC = pB; union __block_indir0_u { struct { int val; } __indir_struct; } * __indir_union = (union __block_indir0_u*)pC; f(__indir_union->__indir_struct.val); DAG_temp117584 += 64; } while (1); } ---- CUT --- Compile at -O1, we get the following ICE: gcc/gcc/testsuite/gcc.c-torture/compile/20090206-2.c:19: internal compiler error: in expand_expr_addr_expr_1, at expr.c:6817 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. If we compile with -O2, we get: gcc/gcc/testsuite/gcc.c-torture/compile/20090206-2.c:1: internal compiler error: in verify_expr, at tree-cfg.c:2876 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. forwprop1 produces: D.1591_10 = VIEW_CONVERT_EXPR<union __block_indir0_u>(pA).__indir_struct.val; CCP2 produces: D.1591_10 = VIEW_CONVERT_EXPR<union __block_indir0_u>(&uA).__indir_struct.val; And then somewhere we must lose that the address of uA is taken because with -O2 PRE creates: uA.18_15 = uA_11(D); D.2674_1 = uA.18_15; D.2676_8 = D.2674_1; D.2675_7 = &D.2676_8; pretmp.19_13 = VIEW_CONVERT_EXPR<union __block_indir0_u>(D.2675_7).__indir_struct.val; Which is just incorrect. -- Summary: [4.5 Regression] ICE with some code that produces VCE Product: gcc Version: 4.5.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: pinskia at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39829 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/39829] [4.5 Regression] ICE with some code that produces VCE 2009-04-20 23:50 [Bug tree-optimization/39829] New: [4.5 Regression] ICE with some code that produces VCE pinskia at gcc dot gnu dot org @ 2009-04-20 23:51 ` pinskia at gcc dot gnu dot org 2009-04-21 8:37 ` rguenth at gcc dot gnu dot org ` (4 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: pinskia at gcc dot gnu dot org @ 2009-04-20 23:51 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from pinskia at gcc dot gnu dot org 2009-04-20 23:51 ------- I thought http://gcc.gnu.org/ml/gcc-patches/2009-04/msg01375.html would help but that patch was already applied. I have not tried 4.4.0 yet. -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rguenth at gcc dot gnu dot | |org Target Milestone|--- |4.5.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39829 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/39829] [4.5 Regression] ICE with some code that produces VCE 2009-04-20 23:50 [Bug tree-optimization/39829] New: [4.5 Regression] ICE with some code that produces VCE pinskia at gcc dot gnu dot org 2009-04-20 23:51 ` [Bug tree-optimization/39829] " pinskia at gcc dot gnu dot org @ 2009-04-21 8:37 ` rguenth at gcc dot gnu dot org 2009-04-21 12:42 ` rguenth at gcc dot gnu dot org ` (3 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu dot org @ 2009-04-21 8:37 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from rguenth at gcc dot gnu dot org 2009-04-21 08:36 ------- Mine. -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot |dot org |org Status|UNCONFIRMED |ASSIGNED Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2009-04-21 08:36:55 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39829 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/39829] [4.5 Regression] ICE with some code that produces VCE 2009-04-20 23:50 [Bug tree-optimization/39829] New: [4.5 Regression] ICE with some code that produces VCE pinskia at gcc dot gnu dot org 2009-04-20 23:51 ` [Bug tree-optimization/39829] " pinskia at gcc dot gnu dot org 2009-04-21 8:37 ` rguenth at gcc dot gnu dot org @ 2009-04-21 12:42 ` rguenth at gcc dot gnu dot org 2009-04-21 12:42 ` rguenth at gcc dot gnu dot org ` (2 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu dot org @ 2009-04-21 12:42 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from rguenth at gcc dot gnu dot org 2009-04-21 12:42 ------- Subject: Bug 39829 Author: rguenth Date: Tue Apr 21 12:42:24 2009 New Revision: 146521 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=146521 Log: 2009-04-21 Richard Guenther <rguenther@suse.de> PR middle-end/39829 * gimple.c (walk_stmt_load_store_addr_ops): Catch addresses inside VIEW_CONVERT_EXPRs. * gcc.dg/torture/pr39829.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/torture/pr39829.c Modified: trunk/gcc/ChangeLog trunk/gcc/gimple.c trunk/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39829 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/39829] [4.5 Regression] ICE with some code that produces VCE 2009-04-20 23:50 [Bug tree-optimization/39829] New: [4.5 Regression] ICE with some code that produces VCE pinskia at gcc dot gnu dot org ` (2 preceding siblings ...) 2009-04-21 12:42 ` rguenth at gcc dot gnu dot org @ 2009-04-21 12:42 ` rguenth at gcc dot gnu dot org 2009-04-22 13:47 ` rguenth at gcc dot gnu dot org 2009-04-22 14:14 ` hjl at gcc dot gnu dot org 5 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu dot org @ 2009-04-21 12:42 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from rguenth at gcc dot gnu dot org 2009-04-21 12:42 ------- Fixed. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39829 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/39829] [4.5 Regression] ICE with some code that produces VCE 2009-04-20 23:50 [Bug tree-optimization/39829] New: [4.5 Regression] ICE with some code that produces VCE pinskia at gcc dot gnu dot org ` (3 preceding siblings ...) 2009-04-21 12:42 ` rguenth at gcc dot gnu dot org @ 2009-04-22 13:47 ` rguenth at gcc dot gnu dot org 2009-04-22 14:14 ` hjl at gcc dot gnu dot org 5 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu dot org @ 2009-04-22 13:47 UTC (permalink / raw) To: gcc-bugs ------- Comment #5 from rguenth at gcc dot gnu dot org 2009-04-22 13:47 ------- Fixed! -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39829 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/39829] [4.5 Regression] ICE with some code that produces VCE 2009-04-20 23:50 [Bug tree-optimization/39829] New: [4.5 Regression] ICE with some code that produces VCE pinskia at gcc dot gnu dot org ` (4 preceding siblings ...) 2009-04-22 13:47 ` rguenth at gcc dot gnu dot org @ 2009-04-22 14:14 ` hjl at gcc dot gnu dot org 5 siblings, 0 replies; 7+ messages in thread From: hjl at gcc dot gnu dot org @ 2009-04-22 14:14 UTC (permalink / raw) To: gcc-bugs ------- Comment #6 from hjl at gcc dot gnu dot org 2009-04-22 14:14 ------- Subject: Bug 39829 Author: hjl Date: Wed Apr 22 14:14:08 2009 New Revision: 146579 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=146579 Log: 2009-04-22 H.J. Lu <hongjiu.lu@intel.com> Backport from mainline: 2009-04-22 Richard Guenther <rguenther@suse.de> PR tree-optimization/39845 * gcc.c-torture/compile/pr39845.c: New testcase. 2009-04-21 Richard Guenther <rguenther@suse.de> PR middle-end/39829 * gcc.dg/torture/pr39829.c: New testcase. Added: branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr39845.c - copied unchanged from r146578, trunk/gcc/testsuite/gcc.c-torture/compile/pr39845.c branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/torture/pr39829.c - copied unchanged from r146578, trunk/gcc/testsuite/gcc.dg/torture/pr39829.c Modified: branches/gcc-4_4-branch/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39829 ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2009-04-22 14:14 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2009-04-20 23:50 [Bug tree-optimization/39829] New: [4.5 Regression] ICE with some code that produces VCE pinskia at gcc dot gnu dot org 2009-04-20 23:51 ` [Bug tree-optimization/39829] " pinskia at gcc dot gnu dot org 2009-04-21 8:37 ` rguenth at gcc dot gnu dot org 2009-04-21 12:42 ` rguenth at gcc dot gnu dot org 2009-04-21 12:42 ` rguenth at gcc dot gnu dot org 2009-04-22 13:47 ` rguenth at gcc dot gnu dot org 2009-04-22 14:14 ` hjl at gcc dot gnu dot org
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