https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89243
Bug ID: 89243
Summary: ICE in new test case g++.dg/opt/pr89188.C from r268647
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: seurer at gcc dot gnu.org
Target Milestone: ---
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r268647 | jakub | 2019-02-07 08:55:50 -0600 (Thu, 07 Feb 2019) | 11 lines
Backported from mainline
2019-02-05 Jakub Jelinek <ja...@redhat.com>
PR target/89188
* dce.c (delete_unmarked_insns): Don't remove no-op moves if they
can throw, non-call exceptions are enabled and we can't delete
dead exceptions or alter cfg. Set must_clean if
delete_insn_and_edges returns true, don't set it blindly for calls.
* g++.dg/opt/pr89188.C: New test.
This works on trunk but gives me ICEs with gcc 8.
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-8/gcc/testsuite/g++/../../xg++
-B/home/seurer/gcc/build/gcc-8/gcc/testsuite/g++/../../
/home/seurer/gcc/gcc-8/gcc/testsuite/g++.dg/opt/pr89188.C
-fno-diagnostics-show-caret -fdiagnostics-color=never -nostdinc++
-I/home/seurer/gcc/build/gcc-8/powerpc64-unknown-linux-gnu/libstdc++-v3/include/powerpc64-unknown-linux-gnu
-I/home/seurer/gcc/build/gcc-8/powerpc64-unknown-linux-gnu/libstdc++-v3/include
-I/home/seurer/gcc/gcc-8/libstdc++-v3/libsupc++
-I/home/seurer/gcc/gcc-8/libstdc++-v3/include/backward
-I/home/seurer/gcc/gcc-8/libstdc++-v3/testsuite/util -fmessage-length=0
-std=gnu++11 -Og -flive-range-shrinkage -fnon-call-exceptions -S -o pr89188.s
during RTL pass: lr_shrinkage
/home/seurer/gcc/gcc-8/gcc/testsuite/g++.dg/opt/pr89188.C: In function 'int
main()':
/home/seurer/gcc/gcc-8/gcc/testsuite/g++.dg/opt/pr89188.C:13:1: internal
compiler error: in pre_and_rev_post_order_compute, at cfganal.c:1055
0x1041dc13 pre_and_rev_post_order_compute(int*, int*, bool)
/home/seurer/gcc/gcc-8/gcc/cfganal.c:1054
0x103e4b0f init_alias_analysis()
/home/seurer/gcc/gcc-8/gcc/alias.c:3325
0x1115843b sched_init()
/home/seurer/gcc/gcc-8/gcc/haifa-sched.c:7289
0x1115a3cf haifa_sched_init()
/home/seurer/gcc/gcc-8/gcc/haifa-sched.c:7326
0x1088e293 schedule_insns()
/home/seurer/gcc/gcc-8/gcc/sched-rgn.c:3507
0x1088eaaf schedule_insns()
/home/seurer/gcc/gcc-8/gcc/sched-rgn.c:3501
0x1088eaaf rest_of_handle_live_range_shrinkage
/home/seurer/gcc/gcc-8/gcc/sched-rgn.c:3704
0x1088eaaf execute
/home/seurer/gcc/gcc-8/gcc/sched-rgn.c:3791
