------- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-17
19:53 -------
Confirmed, a regression from 4.0.0.
backtrace:
#0 expand_simple_operations (expr=0x0) at
/home/pinskia/src/onetest/gcc/gcc/tree-ssa-loop-
niter.c:637
#1 0x00000000004cee15 in expand_simple_operations (expr=0x2a95c2ee70) at
/home/pinskia/src/
onetest/gcc/gcc/tree-ssa-loop-niter.c:648
#2 0x00000000004cee15 in expand_simple_operations (expr=0x2a95c37080) at
/home/pinskia/src/
onetest/gcc/gcc/tree-ssa-loop-niter.c:648
#3 0x00000000004cee15 in expand_simple_operations (expr=0x2a95c37280) at
/home/pinskia/src/
onetest/gcc/gcc/tree-ssa-loop-niter.c:648
#4 0x00000000004cee15 in expand_simple_operations (expr=0x2a95c2f870) at
/home/pinskia/src/
onetest/gcc/gcc/tree-ssa-loop-niter.c:648
#5 0x00000000004cee15 in expand_simple_operations (expr=0x2a95c2f8c0) at
/home/pinskia/src/
onetest/gcc/gcc/tree-ssa-loop-niter.c:648
#6 0x00000000004cf52c in tree_simplify_using_condition_1 (cond=0x2a95a664b0,
expr=0x2a95c2f8c0) at
/home/pinskia/src/onetest/gcc/gcc/tree-ssa-loop-niter.c:777
#7 0x00000000004cfa8e in simplify_using_initial_conditions (loop=Variable
"loop" is not available.
) at /home/pinskia/src/onetest/gcc/gcc/tree-ssa-loop-niter.c:805
#8 0x00000000004cff1f in number_of_iterations_exit (loop=0xbcd540,
exit=Variable "exit" is not
available.
) at /home/pinskia/src/onetest/gcc/gcc/tree-ssa-loop-niter.c:990
#9 0x00000000007e6a2a in number_of_iterations_in_loop (loop=0xbcd540) at
/home/pinskia/src/
onetest/gcc/gcc/tree-scalar-evolution.c:2284
#10 0x00000000007e7f76 in compute_overall_effect_of_inner_loop (loop=0xbcd540,
evolution_fn=0x2a95c2f6e0) at
/home/pinskia/src/onetest/gcc/gcc/tree-scalar-evolution.c:471
#11 0x00000000007eb704 in follow_ssa_edge (loop=0xbcd450, def=0x2a95c28000,
halting_phi=0x2a95c28100, evolution_of_loop=0x7fbffff2c0)
at /home/pinskia/src/onetest/gcc/gcc/tree-scalar-evolution.c:1389
#12 0x00000000007ebf87 in follow_ssa_edge_in_rhs (loop=0xbcd450,
at_stmt=0x2a95a66af0,
rhs=0x2a95c27370, halting_phi=Variable "halting_phi" is not available.
) at /home/pinskia/src/onetest/gcc/gcc/tree-scalar-evolution.c:1110
#13 0x00000000007eb504 in follow_ssa_edge (loop=0xbcd450, def=0x2a95a66af0,
halting_phi=0x2a95c28100, evolution_of_loop=0x7fbffff2c0)
at /home/pinskia/src/onetest/gcc/gcc/tree-scalar-evolution.c:1442
#14 0x00000000007eb589 in follow_ssa_edge (loop=0xbcd450, def=0x2a95c24b00,
halting_phi=0x2a95c28100, evolution_of_loop=0x7fbffff330)
at /home/pinskia/src/onetest/gcc/gcc/tree-scalar-evolution.c:1293
#15 0x00000000007eb607 in follow_ssa_edge (loop=0xbcd450, def=0x2a95c24300,
halting_phi=0x2a95c28100, evolution_of_loop=0x7fbffff390)
at /home/pinskia/src/onetest/gcc/gcc/tree-scalar-evolution.c:1293
#16 0x00000000007e8770 in analyze_scalar_evolution_1 (loop=0xbcd450,
var=0x2a95c25d20,
res=0x0) at /home/pinskia/src/onetest/gcc/gcc/tree-scalar-evolution.c:1494
#17 0x00000000007e8ae7 in analyze_scalar_evolution (loop=0xbcd450, var=0x0) at
/home/pinskia/
src/onetest/gcc/gcc/tree-scalar-evolution.c:1856
#18 0x00000000007ea405 in analyze_scalar_evolution_in_loop (wrto_loop=0xbcd450,
use_loop=0xbcd450, version=Variable "version" is not available.
) at /home/pinskia/src/onetest/gcc/gcc/tree-scalar-evolution.c:1880
#19 0x00000000007eace7 in simple_iv (loop=0xbcd450, stmt=0x2a95c28100,
op=0x2a95c25d20,
base=0x7fbffff468, step=0x7fbffff470, allow_nonconstant_step=1 '\001')
at /home/pinskia/src/onetest/gcc/gcc/tree-scalar-evolution.c:2597
#20 0x00000000004f1b9e in find_induction_variables (data=0x7fbffff500) at
/home/pinskia/src/
onetest/gcc/gcc/tree-ssa-loop-ivopts.c:889
#21 0x00000000004f5755 in tree_ssa_iv_optimize (loops=0xbda050) at
/home/pinskia/src/onetest/
gcc/gcc/tree-ssa-loop-ivopts.c:5933
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Known to fail| |4.1.0
Known to work| |4.0.0
Last reconfirmed|0000-00-00 00:00:00 |2005-09-17 19:53:05
date| |
Summary|segfault in |[4.1 Regression] segfault in
|expand_simple_operations, |expand_simple_operations,
|tree-ssa-loop-niter.c:637 |tree-ssa-loop-niter.c:637
Target Milestone|--- |4.1.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23929
