https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95323
Bug ID: 95323
Summary: ice in compute_live_loop_exits, at
tree-ssa-loop-manip.c:247
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Created attachment 48598
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48598&action=edit
fortran source code
For the attached Fortran code, recent gfortran trunk does this:
$ gfortran -O2 -w -c local.f
during GIMPLE pass: lim
local.f:1:0:
1 | SUBROUTINE LOCAL(C,MDIM,NOCC,EIG)
|
internal compiler error: in compute_live_loop_exits, at
tree-ssa-loop-manip.c:247
0xef51a9 compute_live_loop_exits(bitmap_head*, bitmap_head*, bitmap_head**,
basic_block_def*)
../../trunk.git/gcc/tree-ssa-loop-manip.c:247
0xef51a9 add_exit_phis_var(tree_node*, bitmap_head*, bitmap_head**)
../../trunk.git/gcc/tree-ssa-loop-manip.c:334
0xef51a9 add_exit_phis(bitmap_head*, bitmap_head**, bitmap_head**)
../../trunk.git/gcc/tree-ssa-loop-manip.c:356
0xef51a9 rewrite_into_loop_closed_ssa_1(bitmap_head*, unsigned int, int, loop*)
../../trunk.git/gcc/tree-ssa-loop-manip.c:678
The bug first seems to occur sometime between 20200521 and 20200522
