https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102172
Bug ID: 102172
Summary: ice in determine_exit_conditions, at
tree-ssa-loop-manip.c:1049
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
For this C code:
char **Gif_ClipImage_gfi_0;
int Gif_ClipImage_y, Gif_ClipImage_shift;
void Gif_ClipImage() {
for (; Gif_ClipImage_y >= Gif_ClipImage_shift; Gif_ClipImage_y++)
Gif_ClipImage_gfi_0[Gif_ClipImage_shift] =
Gif_ClipImage_gfi_0[Gif_ClipImage_y];
}
compiled by recent gcc trunk and compiler flag -O3 -march=bdver2,
does this:
$ /home/dcb/gcc/results/bin/gcc -c -O3 -march=bdver2 bug753.c
during GIMPLE pass: aprefetch
bug753.c: In function ‘Gif_ClipImage’:
bug753.c:3:6: internal compiler error: in determine_exit_conditions, at
tree-ssa-loop-manip.c:1049
3 | void Gif_ClipImage() {
| ^~~~~~~~~~~~~
0xf070ff determine_exit_conditions(loop*, tree_niter_desc*, unsigned int,
tree_node**, tree_node**, tree_node**, tree_code*, tree_node**)
../../trunk.git/gcc/tree-ssa-loop-manip.c:1049
0xf070ff tree_transform_and_unroll_loop(loop*, unsigned int, edge_def*,
tree_niter_desc*, void (*)(loop*, void*), void*)
The bug first starts sometime between git hash f8977166135de09f,
dated 20210824 and git hash 3ac6b5cff1eca4e1, dated 20210825.
