/usr/lib/gcc/i586-suse-linux/4.1.0/cc1 -fpreprocessed disasm.i -quiet -dumpbase
disasm.c -march=i586 -mtune=i686 -auxbase-strip disasm.o -O2 -Wall -Wall
-pedantic -std=c99 -version -fmessage-length=0 -fno-strict-aliasing -o disasm.s
disasm.c: In function ‘disasm’:
disasm.c:579: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.suse.de/feedback> for instructions.
#0 0x082c9862 in operand_equal_p (arg0=0x40437c98, arg1=0x404441a0, flags=0)
at fold-const.c:2413
#1 0x0817ab10 in simplify_replace_tree (expr=0x40437c98, old=0x404441a0,
new=0x4031ce28) at tree-ssa-loop-niter.c:605
#2 0x0817ac46 in simplify_replace_tree (expr=0x4050ecf0, old=0x404441a0,
new=0x4031ce28) at tree-ssa-loop-niter.c:616
#3 0x0817ac46 in simplify_replace_tree (expr=0x4050f2c0, old=0x404441a0,
new=0x4031ce28) at tree-ssa-loop-niter.c:616
#4 0x081803f2 in substitute_in_loop_info (loop=0x89e6548, name=0x404441a0,
val=0x4031ce28) at tree-ssa-loop-niter.c:2053
#5 0x080e5e0e in replace_uses_by (name=0x404441a0, val=0x4031ce28)
at tree-cfg.c:1293
#6 0x080e66e5 in tree_merge_blocks (a=0x40480820, b=0x404ce870)
at tree-cfg.c:1341
#7 0x08524467 in merge_blocks (a=0x40480820, b=0x404ce870) at cfghooks.c:530
#8 0x081f39de in merge_seq_blocks () at cfgcleanup.c:2064
#9 0x0854a62a in cleanup_tree_cfg_1 () at tree-cfgcleanup.c:520
#10 0x0854a660 in cleanup_tree_cfg () at tree-cfgcleanup.c:541
#11 0x0854a6b6 in cleanup_tree_cfg_loop () at tree-cfgcleanup.c:564
#12 0x08198cee in tree_unroll_loops_completely (loops=0x885b9e8,
may_increase_size=0 '\0') at tree-ssa-loop-ivcanon.c:391
#13 0x081797f9 in tree_complete_unroll () at tree-ssa-loop.c:376
#14 0x0852f0cd in execute_one_pass (pass=0x87752c0) at passes.c:827
/* If both types don't have the same signedness, then we can't consider
them equal. We must check this before the STRIP_NOPS calls
because they may change the signedness of the arguments. */
if (TYPE_UNSIGNED (TREE_TYPE (arg0)) != TYPE_UNSIGNED (TREE_TYPE (arg1)))
return 0;
(gdb) call debug_tree(arg0)
<ssa_name 0x40437c98 nothrow var <var_decl 0x403325d8 D.3500> def_stmt
<ssa_name 0x40437b94>
version 246 in-free-list>
(gdb) call debug_tree(arg1)
<ssa_name 0x404441a0
type <integer_type 0x4019d2e0 unsigned int sizes-gimplified public unsigned
SI
size <integer_cst 0x4018d408 constant invariant 32>
unit size <integer_cst 0x4018d198 constant invariant 4>
align 32 symtab 0 alias set -1 precision 32 min <integer_cst 0x4018d480
0> max <integer_cst 0x4018d468 4294967295>>
var <var_decl 0x40508688 ivtmp.485> def_stmt <phi_node 0x403e7b00>
version 1050>
we have a DEF_STMT in arg0. Ugh.
--
Summary: [4.1 Regression] ICE: Segmentation fault in
operand_equal_p (complete loop unrolling)
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P2
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: rguenth at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24226
