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* [Bug tree-optimization/63747] New: [5 regression] icf mis-compares switch gimple
@ 2014-11-05 9:46 joey.ye at arm dot com
2014-11-05 11:28 ` [Bug tree-optimization/63747] " thopre01 at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: joey.ye at arm dot com @ 2014-11-05 9:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63747
Bug ID: 63747
Summary: [5 regression] icf mis-compares switch gimple
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: joey.ye at arm dot com
ARM -Os bootstrap breaks. Root cause lies in ipa-icf-gimple.c where
compare_gimple_switch doesn't compare case numbers correctly. Will upload a
reduced test case soon.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/63747] [5 regression] icf mis-compares switch gimple
2014-11-05 9:46 [Bug tree-optimization/63747] New: [5 regression] icf mis-compares switch gimple joey.ye at arm dot com
@ 2014-11-05 11:28 ` thopre01 at gcc dot gnu.org
2014-11-06 2:26 ` joey.ye at arm dot com
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: thopre01 at gcc dot gnu.org @ 2014-11-05 11:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63747
thopre01 at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |thopre01 at gcc dot gnu.org
--- Comment #1 from thopre01 at gcc dot gnu.org ---
The description of the problem you make seems to point to commit r216913.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/63747] [5 regression] icf mis-compares switch gimple
2014-11-05 9:46 [Bug tree-optimization/63747] New: [5 regression] icf mis-compares switch gimple joey.ye at arm dot com
2014-11-05 11:28 ` [Bug tree-optimization/63747] " thopre01 at gcc dot gnu.org
@ 2014-11-06 2:26 ` joey.ye at arm dot com
2014-11-06 2:28 ` joey.ye at arm dot com
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: joey.ye at arm dot com @ 2014-11-06 2:26 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63747
--- Comment #2 from Joey Ye <joey.ye at arm dot com> ---
/* { dg-options "-O2" } */
/* { dg-do run } */
static int __attribute__((noinline))
foo(int i)
{
switch (i)
{
case 0:
case 1:
case 2:
case 3:
return 0;
default:
return 1;
}
}
static int __attribute__((noinline))
bar(int i)
{
switch (i)
{
case 4:
case 5:
case 6:
case 7:
return 0;
default:
return 1;
}
}
int main()
{
return foo(0) + bar(4);
}
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/63747] [5 regression] icf mis-compares switch gimple
2014-11-05 9:46 [Bug tree-optimization/63747] New: [5 regression] icf mis-compares switch gimple joey.ye at arm dot com
2014-11-05 11:28 ` [Bug tree-optimization/63747] " thopre01 at gcc dot gnu.org
2014-11-06 2:26 ` joey.ye at arm dot com
@ 2014-11-06 2:28 ` joey.ye at arm dot com
2014-11-06 2:33 ` joey.ye at arm dot com
2014-11-06 3:14 ` pinskia at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: joey.ye at arm dot com @ 2014-11-06 2:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63747
--- Comment #3 from Joey Ye <joey.ye at arm dot com> ---
Created attachment 33906
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33906&action=edit
/home/joeye01/patches/icf-switch-testcase-141105.patch
Test case patch
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/63747] [5 regression] icf mis-compares switch gimple
2014-11-05 9:46 [Bug tree-optimization/63747] New: [5 regression] icf mis-compares switch gimple joey.ye at arm dot com
` (2 preceding siblings ...)
2014-11-06 2:28 ` joey.ye at arm dot com
@ 2014-11-06 2:33 ` joey.ye at arm dot com
2014-11-06 3:14 ` pinskia at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: joey.ye at arm dot com @ 2014-11-06 2:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63747
--- Comment #4 from Joey Ye <joey.ye at arm dot com> ---
It actually fails on all targets.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/63747] [5 regression] icf mis-compares switch gimple
2014-11-05 9:46 [Bug tree-optimization/63747] New: [5 regression] icf mis-compares switch gimple joey.ye at arm dot com
` (3 preceding siblings ...)
2014-11-06 2:33 ` joey.ye at arm dot com
@ 2014-11-06 3:14 ` pinskia at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: pinskia at gcc dot gnu.org @ 2014-11-06 3:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63747
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |build, wrong-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2014-11-06
Ever confirmed|0 |1
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2014-11-06 3:14 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2014-11-05 9:46 [Bug tree-optimization/63747] New: [5 regression] icf mis-compares switch gimple joey.ye at arm dot com
2014-11-05 11:28 ` [Bug tree-optimization/63747] " thopre01 at gcc dot gnu.org
2014-11-06 2:26 ` joey.ye at arm dot com
2014-11-06 2:28 ` joey.ye at arm dot com
2014-11-06 2:33 ` joey.ye at arm dot com
2014-11-06 3:14 ` pinskia at gcc dot gnu.org
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