http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52250
Bug #: 52250
Summary: [4.7 Regression] ICE: in sel_remove_bb, at
sel-sched-ir.c:5213 with -fsel-sched-pipelining
-fsel-sched-pipelining-outer-loops
-fselective-scheduling2 and other flags
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: zso...@seznam.cz
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 26661
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26661
reduced testcase
Once again an ICE with insane compiler flags.
Compiler output:
$ gcc -O -ftree-pre -fno-guess-branch-probability -freorder-blocks
-fschedule-insns2 -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops
-fselective-scheduling2 -fno-tree-dominator-opts -fno-tree-forwprop testcase.f
testcase.f: In function 'foo':
testcase.f:12:0: internal compiler error: in sel_remove_bb, at
sel-sched-ir.c:5213
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
(gdb) bt
#0 fancy_abort (file=0x130f4a0 "/mnt/svn/gcc-trunk/gcc/sel-sched-ir.c",
line=5213, function=0x13100a0 "sel_remove_bb")
at /mnt/svn/gcc-trunk/gcc/diagnostic.c:898
#1 0x0000000000a06c41 in sel_remove_bb (bb=0x7ffff5ac6680,
remove_from_cfg_p=<optimized out>) at
/mnt/svn/gcc-trunk/gcc/sel-sched-ir.c:5213
#2 0x0000000000a0f237 in maybe_tidy_empty_bb (bb=0x7ffff5ac6680) at
/mnt/svn/gcc-trunk/gcc/sel-sched-ir.c:3753
#3 0x0000000000a0f639 in tidy_control_flow (xbb=0x7ffff5ac6680,
full_tidying=true) at /mnt/svn/gcc-trunk/gcc/sel-sched-ir.c:3776
#4 0x0000000000a0ff46 in sel_remove_insn (insn=0x7ffff5bc8d38,
only_disconnect=false, full_tidying=true)
at /mnt/svn/gcc-trunk/gcc/sel-sched-ir.c:3923
#5 0x0000000000a1040a in return_nop_to_pool (nop=0x7ffff5bc8d38,
full_tidying=<optimized out>) at /mnt/svn/gcc-trunk/gcc/sel-sched-ir.c:1061
#6 0x0000000000a254ba in remove_temp_moveop_nops (full_tidying=true) at
/mnt/svn/gcc-trunk/gcc/sel-sched.c:4991
#7 schedule_expr_on_boundary (bnd=0x1ad0fb0, expr_vliw=0x1ad1910, seqno=-1) at
/mnt/svn/gcc-trunk/gcc/sel-sched.c:5467
#8 0x0000000000a26eb4 in fill_insns (scheduled_insns_tailpp=<synthetic
pointer>, seqno=-1, fence=<optimized out>)
at /mnt/svn/gcc-trunk/gcc/sel-sched.c:5584
#9 schedule_on_fences (scheduled_insns_tailpp=<synthetic pointer>,
max_seqno=9, fences=0x1ad0cd8) at /mnt/svn/gcc-trunk/gcc/sel-sched.c:7343
#10 sel_sched_region_2 (orig_max_seqno=21) at
/mnt/svn/gcc-trunk/gcc/sel-sched.c:7477
#11 0x0000000000a2aa55 in sel_sched_region_1 () at
/mnt/svn/gcc-trunk/gcc/sel-sched.c:7516
#12 sel_sched_region (rgn=1) at /mnt/svn/gcc-trunk/gcc/sel-sched.c:7617
#13 0x0000000000a2c2ba in run_selective_scheduling () at
/mnt/svn/gcc-trunk/gcc/sel-sched.c:7693
#14 0x00000000009f90f6 in rest_of_handle_sched2 () at
/mnt/svn/gcc-trunk/gcc/sched-rgn.c:3515
#15 0x0000000000968d75 in execute_one_pass (pass=0x1852b00) at
/mnt/svn/gcc-trunk/gcc/passes.c:2081
#16 0x0000000000969135 in execute_pass_list (pass=0x1852b00) at
/mnt/svn/gcc-trunk/gcc/passes.c:2136
#17 0x0000000000969147 in execute_pass_list (pass=0x1852100) at
/mnt/svn/gcc-trunk/gcc/passes.c:2137
#18 0x0000000000969147 in execute_pass_list (pass=0x1852160) at
/mnt/svn/gcc-trunk/gcc/passes.c:2137
#19 0x0000000000acb4ee in tree_rest_of_compilation (fndecl=0x7ffff5bb5300) at
/mnt/svn/gcc-trunk/gcc/tree-optimize.c:422
#20 0x000000000071da4a in cgraph_expand_function (node=0x7ffff5a95900) at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1831
#21 0x000000000071f93c in cgraph_expand_all_functions () at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1898
#22 cgraph_optimize () at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:2212
#23 0x000000000071ff8a in cgraph_finalize_compilation_unit () at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1338
#24 0x0000000000912fed in write_global_declarations () at
/mnt/svn/gcc-trunk/gcc/langhooks.c:303
#25 0x0000000000a5dc1c in compile_file () at
/mnt/svn/gcc-trunk/gcc/toplev.c:573
#26 do_compile () at /mnt/svn/gcc-trunk/gcc/toplev.c:1938
#27 toplev_main (argc=24, argv=0x7fffffffd628) at
/mnt/svn/gcc-trunk/gcc/toplev.c:2014
#28 0x00007ffff61cc09d in __libc_start_main () from /lib64/libc.so.6
#29 0x0000000000584ea1 in _start ()
Tested revisions:
r184192 - crash
r180540 - crash
r178498 - OK
4.6 r180325 - OK
