https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108979
Bug ID: 108979
Summary: [13 Regression] ICE in compute_live_loop_exits, at
tree-ssa-loop-manip.cc:248
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
Target: aarch64-linux-gnu
gcc 13.0.1 20230226 snapshot (g:e6d39f68d03c46637ca6e1bede3d28eae6278df3) ICEs
when compiling the following testcase, extracted from
gcc/testsuite/gfortran.dg/pr68251.f90, w/ -march=armv8-a+sve -O2
-fnon-call-exceptions -fvect-cost-model=unlimited:
MODULE hfx_contract_block
INTEGER, PARAMETER :: dp=8
CONTAINS
SUBROUTINE block_2_1_2_1(kbd,kbc,kad,kac,pbd,pbc,pad,pac,prim,scale)
REAL(KIND=dp) :: kbd(1*1), kbc(1*2), kad(2*1), kac(2*2), pbd(1*1), &
pbc(1*2), pad(2*1), pac(2*2), prim(2*1*2*1), scale
DO md = 1,1
DO mc = 1,2
DO mb = 1,1
DO ma = 1,2
kac((mc-1)*2+ma) = kac((mc-1)*2+ma)-tmp*p_bd
END DO
END DO
END DO
END DO
END SUBROUTINE block_2_1_2_1
END MODULE hfx_contract_block
% aarch64-linux-gnu-gfortran-13 -march=armv8-a+sve -O2 -fnon-call-exceptions
-fvect-cost-model=unlimited -c vsg8aaub.f90
during GIMPLE pass: vect
vsg8aaub.f90:4:26:
4 | SUBROUTINE block_2_1_2_1(kbd,kbc,kad,kac,pbd,pbc,pad,pac,prim,scale)
| ^
internal compiler error: in compute_live_loop_exits, at
tree-ssa-loop-manip.cc:248
0x7b7fb1 compute_live_loop_exits
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-13.0.1_p20230226/work/gcc-13-20230226/gcc/tree-ssa-loop-manip.cc:248
0x7b7fb1 add_exit_phis_var
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-13.0.1_p20230226/work/gcc-13-20230226/gcc/tree-ssa-loop-manip.cc:330
0x7b7fb1 add_exit_phis
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-13.0.1_p20230226/work/gcc-13-20230226/gcc/tree-ssa-loop-manip.cc:390
0x1128a64 rewrite_into_loop_closed_ssa_1
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-13.0.1_p20230226/work/gcc-13-20230226/gcc/tree-ssa-loop-manip.cc:604
0x1128a64 rewrite_into_loop_closed_ssa(bitmap_head*, unsigned int)
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-13.0.1_p20230226/work/gcc-13-20230226/gcc/tree-ssa-loop-manip.cc:626
0x1288785 execute
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-13.0.1_p20230226/work/gcc-13-20230226/gcc/tree-vectorizer.cc:1361
