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* [Bug middle-end/67298] New: [6 Regression] 254.gap in SPEC CPU 2000 is miscompiled
@ 2015-08-20 19:25 hjl.tools at gmail dot com
2015-08-20 21:34 ` [Bug middle-end/67298] " pinskia at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: hjl.tools at gmail dot com @ 2015-08-20 19:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67298
Bug ID: 67298
Summary: [6 Regression] 254.gap in SPEC CPU 2000 is miscompiled
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: naveenh at gcc dot gnu.org
Target Milestone: ---
On Linux/x86-64, r226847 compiles 254.gap in SPEC CPU 2000
into an infinite loop with
-O2 -ffast-math -DSPEC_CPU2000_LP64
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug middle-end/67298] [6 Regression] 254.gap in SPEC CPU 2000 is miscompiled 2015-08-20 19:25 [Bug middle-end/67298] New: [6 Regression] 254.gap in SPEC CPU 2000 is miscompiled hjl.tools at gmail dot com @ 2015-08-20 21:34 ` pinskia at gcc dot gnu.org 2015-08-21 9:01 ` rguenth at gcc dot gnu.org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu.org @ 2015-08-20 21:34 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67298 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |pinskia at gcc dot gnu.org --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- This could be a bug in gap. Have you tried using -fsantitized=undefined on the sources? How about a reduced testcase? ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/67298] [6 Regression] 254.gap in SPEC CPU 2000 is miscompiled 2015-08-20 19:25 [Bug middle-end/67298] New: [6 Regression] 254.gap in SPEC CPU 2000 is miscompiled hjl.tools at gmail dot com 2015-08-20 21:34 ` [Bug middle-end/67298] " pinskia at gcc dot gnu.org @ 2015-08-21 9:01 ` rguenth at gcc dot gnu.org 2015-08-24 14:25 ` afomin.mailbox at gmail dot com ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu.org @ 2015-08-21 9:01 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67298 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |6.0 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/67298] [6 Regression] 254.gap in SPEC CPU 2000 is miscompiled 2015-08-20 19:25 [Bug middle-end/67298] New: [6 Regression] 254.gap in SPEC CPU 2000 is miscompiled hjl.tools at gmail dot com 2015-08-20 21:34 ` [Bug middle-end/67298] " pinskia at gcc dot gnu.org 2015-08-21 9:01 ` rguenth at gcc dot gnu.org @ 2015-08-24 14:25 ` afomin.mailbox at gmail dot com 2015-08-24 21:09 ` afomin.mailbox at gmail dot com 2015-08-25 8:49 ` mpolacek at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: afomin.mailbox at gmail dot com @ 2015-08-24 14:25 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67298 Alexander Fomin <afomin.mailbox at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |afomin.mailbox at gmail dot com --- Comment #2 from Alexander Fomin <afomin.mailbox at gmail dot com> --- I can see many signed integer overflows on 254.gap compiled with -fsanitize=signed-integer-overflow, mostly caused by multiplication. I'll try to provide a reduced testcase. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/67298] [6 Regression] 254.gap in SPEC CPU 2000 is miscompiled 2015-08-20 19:25 [Bug middle-end/67298] New: [6 Regression] 254.gap in SPEC CPU 2000 is miscompiled hjl.tools at gmail dot com ` (2 preceding siblings ...) 2015-08-24 14:25 ` afomin.mailbox at gmail dot com @ 2015-08-24 21:09 ` afomin.mailbox at gmail dot com 2015-08-25 8:49 ` mpolacek at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: afomin.mailbox at gmail dot com @ 2015-08-24 21:09 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67298 --- Comment #4 from Alexander Fomin <afomin.mailbox at gmail dot com> --- Yep, looks like -fwrapv fixes this issue. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/67298] [6 Regression] 254.gap in SPEC CPU 2000 is miscompiled 2015-08-20 19:25 [Bug middle-end/67298] New: [6 Regression] 254.gap in SPEC CPU 2000 is miscompiled hjl.tools at gmail dot com ` (3 preceding siblings ...) 2015-08-24 21:09 ` afomin.mailbox at gmail dot com @ 2015-08-25 8:49 ` mpolacek at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: mpolacek at gcc dot gnu.org @ 2015-08-25 8:49 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67298 Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2015-08-25 CC| |mpolacek at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Probably INVALID then... ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2015-08-25 8:49 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2015-08-20 19:25 [Bug middle-end/67298] New: [6 Regression] 254.gap in SPEC CPU 2000 is miscompiled hjl.tools at gmail dot com 2015-08-20 21:34 ` [Bug middle-end/67298] " pinskia at gcc dot gnu.org 2015-08-21 9:01 ` rguenth at gcc dot gnu.org 2015-08-24 14:25 ` afomin.mailbox at gmail dot com 2015-08-24 21:09 ` afomin.mailbox at gmail dot com 2015-08-25 8:49 ` mpolacek at gcc dot gnu.org
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