https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89116
Bug ID: 89116
Summary: ICE in cfg_layout_redirect_edge_and_branch_force, at
cfgrtl.c:4482
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
Target: powerpc-*-linux-gnu*
gfortran-9.0.0-alpha20190127 snapshot (r268327) ICEs when compiling the
following snippet reduced from gcc/testsuite/gfortran.dg/mvbits_7.f90 w/ -O1
-floop-parallelize-all -fmodulo-sched -fmodulo-sched-allow-regmoves
-freorder-blocks-and-partition -ftree-parallelize-loops=2 -fno-inline
-fno-move-loop-invariants -fno-sched-pressure:
type t
integer :: I
character(9) :: chr
end type
type(t) :: x(4,3)
call foo (x)
contains
SUBROUTINE foo (x)
TYPE(t) x(4, 3)
x%i = x%i * 2
END SUBROUTINE
end
% powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190127 -O1
-floop-parallelize-all -fmodulo-sched -fmodulo-sched-allow-regmoves
-freorder-blocks-and-partition -ftree-parallelize-loops=2 -fno-inline
-fno-move-loop-invariants -fno-sched-pressure -c l8jqrtst.f90
during RTL pass: sms
f951: internal compiler error: in cfg_layout_redirect_edge_and_branch_force, at
cfgrtl.c:4482
0x5a6108 cfg_layout_redirect_edge_and_branch_force
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cfgrtl.c:4482
0x94c145 redirect_edge_and_branch_force(edge_def*, basic_block_def*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cfghooks.c:486
0x95fb4e cfg_layout_split_edge
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cfgrtl.c:4742
0x94c46f split_edge(edge_def*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cfghooks.c:648
0xc0aa22 split_edge_and_insert(edge_def*, rtx_insn*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/loop-unroll.c:759
0x156ac09 generate_prolog_epilog
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/modulo-sched.c:1159
0x156ac09 sms_schedule
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/modulo-sched.c:1739
0x156b61f execute
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/modulo-sched.c:3337
In fact it can be a duplicate of PR85408 or PR87329 both of which I cannot
reproduce anymore, or PR85426 which probably tracks two different issues
already.
