https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69032
Bug ID: 69032
Summary: [5/6 Regression] ICE: in cfg_preds_1, at
sel-sched-ir.c:4809 with -fsched-pressure
-fsel-sched-pipelining -fselective-scheduling
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: powerpc-unknown-linux-gnu
Created attachment 37117
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37117&action=edit
reduced testcase
Compiler output:
$ powerpc-unknown-linux-gnu-gcc -O2 -fsched-pressure -fsel-sched-pipelining
-fselective-scheduling testcase.c
testcase.c: In function 'foo':
testcase.c:8:1: internal compiler error: in cfg_preds_1, at sel-sched-ir.c:4753
}
^
0xadf08f cfg_preds_1
/repo/gcc-trunk/gcc/sel-sched-ir.c:4753
0xadf15c cfg_preds
/repo/gcc-trunk/gcc/sel-sched-ir.c:4793
0xadf15c get_seqno_by_preds(rtx_insn*)
/repo/gcc-trunk/gcc/sel-sched-ir.c:4094
0xafb2f6 find_seqno_for_bookkeeping
/repo/gcc-trunk/gcc/sel-sched.c:4723
0xafb2f6 generate_bookkeeping_insn
/repo/gcc-trunk/gcc/sel-sched.c:4779
0xafb2f6 move_op_at_first_insn
/repo/gcc-trunk/gcc/sel-sched.c:6052
0xaf1268 code_motion_path_driver
/repo/gcc-trunk/gcc/sel-sched.c:6643
0xaf1793 code_motion_process_successors
/repo/gcc-trunk/gcc/sel-sched.c:6331
0xaf1793 code_motion_path_driver
/repo/gcc-trunk/gcc/sel-sched.c:6597
0xaf1793 code_motion_process_successors
/repo/gcc-trunk/gcc/sel-sched.c:6331
0xaf1793 code_motion_path_driver
/repo/gcc-trunk/gcc/sel-sched.c:6597
0xaf65c3 move_op
/repo/gcc-trunk/gcc/sel-sched.c:6688
0xaf65c3 move_exprs_to_boundary
/repo/gcc-trunk/gcc/sel-sched.c:5212
0xaf65c3 schedule_expr_on_boundary
/repo/gcc-trunk/gcc/sel-sched.c:5424
0xaf7e2e fill_insns
/repo/gcc-trunk/gcc/sel-sched.c:5566
0xaf9a0d schedule_on_fences
/repo/gcc-trunk/gcc/sel-sched.c:7342
0xaf9a0d sel_sched_region_2
/repo/gcc-trunk/gcc/sel-sched.c:7480
0xafc43b sel_sched_region_1
/repo/gcc-trunk/gcc/sel-sched.c:7522
0xafc43b sel_sched_region(int)
/repo/gcc-trunk/gcc/sel-sched.c:7623
0xafd9a9 run_selective_scheduling()
/repo/gcc-trunk/gcc/sel-sched.c:7699
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
Other targets do not seem to have this issue.
Tested revisions:
r231903 - FAIL
5-branch r231870 - FAIL
4_9-branch r231865 - OK
4_8-branch r224828 - OK
