[Bug rtl-optimization/47036] [4.6 Regression] ICE: in move_cond_jump, at sel-sched.c:4901 with -fschedule-insns -fselective-scheduling -fno-dce

[abel at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47036

--- Comment #4 from Andrey Belevantsev abel at gcc dot gnu.org 2011-04-07 
07:02:40 UTC ---
Author: abel
Date: Thu Apr  7 07:02:34 2011
New Revision: 172087

URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=172087
Log:
Backport from mainline
2010-12-24  Alexander Monakov  amona...@ispras.ru

PR rtl-optimization/47036
* sel-sched-ir.c (fallthru_bb_of_jump): Remove special support for
unconditional jumps.
* sel-sched.c (moveup_expr): Ditto.


Added:
branches/gcc-4_5-branch/gcc/testsuite/g++.dg/opt/pr47036.C
Modified:
branches/gcc-4_5-branch/gcc/ChangeLog
branches/gcc-4_5-branch/gcc/sel-sched-ir.c
branches/gcc-4_5-branch/gcc/sel-sched.c
branches/gcc-4_5-branch/gcc/testsuite/ChangeLog

[Bug rtl-optimization/47036] [4.6 Regression] ICE: in move_cond_jump, at sel-sched.c:4901 with -fschedule-insns -fselective-scheduling -fno-dce

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47036

Richard Guenther rguenth at gcc dot gnu.org changed:

   What|Removed |Added

   Target Milestone|--- |4.6.0

[Bug rtl-optimization/47036] [4.6 Regression] ICE: in move_cond_jump, at sel-sched.c:4901 with -fschedule-insns -fselective-scheduling -fno-dce

[amonakov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47036

--- Comment #2 from Alexander Monakov amonakov at gcc dot gnu.org 2010-12-24 
14:19:26 UTC ---
Author: amonakov
Date: Fri Dec 24 14:19:23 2010
New Revision: 168225

URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=168225
Log:
PR rtl-optimization/47036
* sel-sched-ir.c (fallthru_bb_of_jump): Remove special support for
unconditional jumps.
* sel-sched.c (moveup_expr): Ditto.

testsuite:
* g++.dg/opt/pr47036.C: New.


Added:
trunk/gcc/testsuite/g++.dg/opt/pr47036.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/sel-sched-ir.c
trunk/gcc/sel-sched.c
trunk/gcc/testsuite/ChangeLog

[Bug rtl-optimization/47036] [4.6 Regression] ICE: in move_cond_jump, at sel-sched.c:4901 with -fschedule-insns -fselective-scheduling -fno-dce

[amonakov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47036

Alexander Monakov amonakov at gcc dot gnu.org changed:

   What|Removed |Added

 Status|ASSIGNED|RESOLVED
 Resolution||FIXED

--- Comment #3 from Alexander Monakov amonakov at gcc dot gnu.org 2010-12-24 
14:20:29 UTC ---
Fixed.

[Bug rtl-optimization/47036] [4.6 Regression] ICE: in move_cond_jump, at sel-sched.c:4901 with -fschedule-insns -fselective-scheduling -fno-dce

[amonakov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47036

Alexander Monakov amonakov at gcc dot gnu.org changed:

   What|Removed |Added

 Status|UNCONFIRMED |ASSIGNED
   Last reconfirmed||2010.12.22 14:32:58
 AssignedTo|unassigned at gcc dot   |amonakov at gcc dot gnu.org
   |gnu.org |
 Ever Confirmed|0   |1

--- Comment #1 from Alexander Monakov amonakov at gcc dot gnu.org 2010-12-22 
14:32:58 UTC ---
Untested patch.  I wonder if it has any effect on code generation (it
shouldn't; I don't see how we handle moving of unconditional jumps).

diff --git a/gcc/sel-sched-ir.c b/gcc/sel-sched-ir.c
index 468dfd7..de40ba0 100644
--- a/gcc/sel-sched-ir.c
+++ b/gcc/sel-sched-ir.c
@@ -4441,9 +4441,6 @@ fallthru_bb_of_jump (rtx jump)
   if (!JUMP_P (jump))
 return NULL;

-  if (any_uncondjump_p (jump))
-return single_succ (BLOCK_FOR_INSN (jump));
-
   if (!any_condjump_p (jump))
 return NULL;