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* [Bug tree-optimization/59038] New: [4.9 Regression] r204398 causes 186.crafty init.c to be miscompiled
@ 2013-11-07 12:30 rguenth at gcc dot gnu.org
2013-11-07 13:15 ` [Bug tree-optimization/59038] " rguenth at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-11-07 12:30 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59038
Bug ID: 59038
Summary: [4.9 Regression] r204398 causes 186.crafty init.c to
be miscompiled
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
-fno-tree-loop-distribute-patterns fixes it. Trying to reduce.
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug tree-optimization/59038] [4.9 Regression] r204398 causes 186.crafty init.c to be miscompiled 2013-11-07 12:30 [Bug tree-optimization/59038] New: [4.9 Regression] r204398 causes 186.crafty init.c to be miscompiled rguenth at gcc dot gnu.org @ 2013-11-07 13:15 ` rguenth at gcc dot gnu.org 2013-11-08 8:44 ` rguenth at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2013-11-07 13:15 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59038 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- extern void abort (void); unsigned char first_ones_8bit[256]; unsigned char connected_passed[256]; int main () { int i, j; for (i=0;i<256;i++){ connected_passed[i]=0; first_ones_8bit[i]=0; for (j=7;j>0;j--){ if ((i & (3<<(7-j))) == (3<<(7-j))){ connected_passed[i]=j; break; } } } if (connected_passed[3] != 7) abort (); return 0; } ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/59038] [4.9 Regression] r204398 causes 186.crafty init.c to be miscompiled 2013-11-07 12:30 [Bug tree-optimization/59038] New: [4.9 Regression] r204398 causes 186.crafty init.c to be miscompiled rguenth at gcc dot gnu.org 2013-11-07 13:15 ` [Bug tree-optimization/59038] " rguenth at gcc dot gnu.org @ 2013-11-08 8:44 ` rguenth at gcc dot gnu.org 2013-11-08 8:45 ` rguenth at gcc dot gnu.org 2013-11-08 10:34 ` rguenth at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2013-11-08 8:44 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59038 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- Fixed. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/59038] [4.9 Regression] r204398 causes 186.crafty init.c to be miscompiled 2013-11-07 12:30 [Bug tree-optimization/59038] New: [4.9 Regression] r204398 causes 186.crafty init.c to be miscompiled rguenth at gcc dot gnu.org 2013-11-07 13:15 ` [Bug tree-optimization/59038] " rguenth at gcc dot gnu.org 2013-11-08 8:44 ` rguenth at gcc dot gnu.org @ 2013-11-08 8:45 ` rguenth at gcc dot gnu.org 2013-11-08 10:34 ` rguenth at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2013-11-08 8:45 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59038 --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Fri Nov 8 08:44:02 2013 New Revision: 204561 URL: http://gcc.gnu.org/viewcvs?rev=204561&root=gcc&view=rev Log: 2013-11-08 Richard Biener <rguenther@suse.de> PR tree-optimization/59038 PR tree-optimization/58955 * tree-loop-distribution.c (pg_add_dependence_edges): Revert previous change. Handle known dependences correctly. * gcc.dg/torture/pr59038.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/torture/pr59038.c Modified: trunk/gcc/ChangeLog trunk/gcc/tree-loop-distribution.c ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/59038] [4.9 Regression] r204398 causes 186.crafty init.c to be miscompiled 2013-11-07 12:30 [Bug tree-optimization/59038] New: [4.9 Regression] r204398 causes 186.crafty init.c to be miscompiled rguenth at gcc dot gnu.org ` (2 preceding siblings ...) 2013-11-08 8:45 ` rguenth at gcc dot gnu.org @ 2013-11-08 10:34 ` rguenth at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2013-11-08 10:34 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59038 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |su at cs dot ucdavis.edu --- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> --- *** Bug 59045 has been marked as a duplicate of this bug. *** ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2013-11-08 10:34 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-11-07 12:30 [Bug tree-optimization/59038] New: [4.9 Regression] r204398 causes 186.crafty init.c to be miscompiled rguenth at gcc dot gnu.org 2013-11-07 13:15 ` [Bug tree-optimization/59038] " rguenth at gcc dot gnu.org 2013-11-08 8:44 ` rguenth at gcc dot gnu.org 2013-11-08 8:45 ` rguenth at gcc dot gnu.org 2013-11-08 10:34 ` rguenth at gcc dot gnu.org
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