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[Bug tree-optimization/50222] ICE with -O{1,2} -funswitch-loops -ftree-loop-distribution
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 29 Aug 2011 08:20:48 +0000
- Subject: [Bug tree-optimization/50222] ICE with -O{1,2} -funswitch-loops -ftree-loop-distribution
- Auto-submitted: auto-generated
- References: <bug-50222-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50222
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2011-08-29
CC| |spop at gcc dot gnu.org
Component|c |tree-optimization
Ever Confirmed|0 |1
Known to fail| |4.4.6, 4.5.3, 4.6.1, 4.7.0
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-08-29 08:20:48 UTC ---
Confirmed, reducing.
Program received signal SIGSEGV, Segmentation fault.
0x0000000000c11969 in rename_use_op (op_p=0x7ffff5bc4230)
at /space/rguenther/src/svn/gcc-4_6-branch/gcc/tree-vect-loop-manip.c:55
55 if (TREE_CODE (USE_FROM_PTR (op_p)) != SSA_NAME)
(gdb) p *op_p
$2 = {prev = 0x0, next = 0x0, loc = {stmt = 0x7ffff5bc4200,
ssa_name = 0x7ffff5bc4200}, use = 0x7ffff5bc4250}
(gdb) call debug_gimple_stmt (0x7ffff5bc4200)
key_frame_413 = PHI <(90)>
a broken PHI.
Broken since -ftree-loop-distribution is available.