[Bug rtl-optimization/48374] ICE: in single_succ_edge, at basic-block.h:562 with -fselective-scheduling2 and __builtin_unreachable()

2012-10-30 Thread abel at gcc dot gnu.org 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48374



--- Comment #6 from Andrey Belevantsev abel at gcc dot gnu.org 2012-10-30 
08:25:24 UTC ---

Author: abel

Date: Tue Oct 30 08:25:16 2012

New Revision: 192979



URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=192979

Log:

Backport from mainline

2012-01-25 Andrey Belevantsev a...@ispras.ru



PR rtl-optimization/48374

* sel-sched-ir.h (get_all_loop_exits): Check for zero successors.



* gcc.dg/pr48374.c: New test.







Added:

branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/pr48374.c

Modified:

branches/gcc-4_6-branch/gcc/ChangeLog

branches/gcc-4_6-branch/gcc/sel-sched-ir.h

branches/gcc-4_6-branch/gcc/testsuite/ChangeLog

[Bug rtl-optimization/48374] ICE: in single_succ_edge, at basic-block.h:562 with -fselective-scheduling2 and __builtin_unreachable()

2012-10-30 Thread abel at gcc dot gnu.org 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48374



Andrey Belevantsev abel at gcc dot gnu.org changed:



   What|Removed |Added



 Status|ASSIGNED|RESOLVED

 Resolution||FIXED



--- Comment #7 from Andrey Belevantsev abel at gcc dot gnu.org 2012-10-30 
08:26:36 UTC ---

Finally fixed in 4.6 too, closed.

[Bug rtl-optimization/48374] ICE: in single_succ_edge, at basic-block.h:562 with -fselective-scheduling2 and __builtin_unreachable()

2012-02-06 Thread abel at gcc dot gnu.org 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48374

--- Comment #5 from Andrey Belevantsev abel at gcc dot gnu.org 2012-02-06 
08:32:30 UTC ---
(In reply to comment #4)
 Seems you forgot to actually add the test case.

Thanks, I forgot to svn add, fixed in 183928.

[Bug rtl-optimization/48374] ICE: in single_succ_edge, at basic-block.h:562 with -fselective-scheduling2 and __builtin_unreachable()

2012-02-05 Thread mikpe at it dot uu.se 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48374

--- Comment #4 from Mikael Pettersson mikpe at it dot uu.se 2012-02-05 
17:51:49 UTC ---
Seems you forgot to actually add the test case.

[Bug rtl-optimization/48374] ICE: in single_succ_edge, at basic-block.h:562 with -fselective-scheduling2 and __builtin_unreachable()

2012-01-25 Thread abel at gcc dot gnu.org 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48374

--- Comment #3 from Andrey Belevantsev abel at gcc dot gnu.org 2012-01-25 
13:20:47 UTC ---
Author: abel
Date: Wed Jan 25 13:20:43 2012
New Revision: 183519

URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=183519
Log:
gcc:
PR rtl-optimization/48374
* sel-sched-ir.h (get_all_loop_exits): Check for zero successors.

testsuite:
PR rtl-optimization/48374
* gcc.dg/pr48374.c: New test.

Modified:
trunk/gcc/ChangeLog
trunk/gcc/sel-sched-ir.h
trunk/gcc/testsuite/ChangeLog

[Bug rtl-optimization/48374] ICE: in single_succ_edge, at basic-block.h:562 with -fselective-scheduling2 and __builtin_unreachable()

2011-05-10 Thread zsojka at seznam dot cz 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48374

--- Comment #2 from Zdenek Sojka zsojka at seznam dot cz 2011-05-10 18:05:57 
UTC ---
Thanks for the suggestion, Andrey. Using lower values for --param
max-sched-extend-regions-iters might reduce the compilation time in some cases.

I tested your patch on top of r173588 and it fixes the ICE on all testcases I
have.

[Bug rtl-optimization/48374] ICE: in single_succ_edge, at basic-block.h:562 with -fselective-scheduling2 and __builtin_unreachable()

2011-04-07 Thread abel at gcc dot gnu.org 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48374

Andrey Belevantsev abel at gcc dot gnu.org changed:

   What|Removed |Added

 Status|UNCONFIRMED |ASSIGNED
   Last reconfirmed||2011.04.07 07:45:54
 CC||abel at gcc dot gnu.org
 AssignedTo|unassigned at gcc dot   |abel at gcc dot gnu.org
   |gnu.org |
 Ever Confirmed|0   |1

--- Comment #1 from Andrey Belevantsev abel at gcc dot gnu.org 2011-04-07 
07:45:54 UTC ---
Confirmed, yet another case when we don't expect a block with zero successors. 
The following fixes the problem.

Btw, --param max-sched-extend-regions-iters=2 is enough to reproduce the bug. 
Zdenek, for most functions you don't want more than two iterations (you can see
the comment in sched-rgn.c:1248, so in your experiments you can limit it to not
more than 5-10.  You actually need a positive value for the region extension
code to fire though.

diff --git a/gcc/sel-sched-ir.h b/gcc/sel-sched-ir.h
index 5516da9..13af1b5 100644
--- a/gcc/sel-sched-ir.h
+++ b/gcc/sel-sched-ir.h
@@ -1119,7 +1119,8 @@ get_all_loop_exits (basic_block bb)
   /* If bb is empty, and we're skipping to loop exits, then
  consider bb as a possible gate to the inner loop now.  */
   while (sel_bb_empty_or_nop_p (bb)
- in_current_region_p (bb))
+ in_current_region_p (bb)
+ EDGE_COUNT (bb-succs)  0)
 {
   bb = single_succ (bb);