https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106967
Bug ID: 106967
Summary: [13 Regression] ICE in upper_bound, at
value-range.h:348
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: ---
gcc 13.0.0 20220918 snapshot (g:313879d8768d08dea035efd7fd62b753dc91c364) ICEs
when compiling the following testcase, reduced from
gcc/testsuite/gcc.dg/pr29921-2.c, w/ -O2 -ffinite-math-only -fno-trapping-math
-fno-tree-dominator-opts:
void
foo (float x, int *y)
{
int i;
float sum2 = 0.0;
for (i = 0; i < *y; ++i)
sum2 += x;
sum2 = 1.0 / sum2;
if (sum2 * 0.0 < 5.E-5)
*y = 0;
}
% gcc-13.0.0 -O2 -ffinite-math-only -fno-trapping-math -fno-tree-dominator-opts
-c skavkcop.c
during GIMPLE pass: thread
skavkcop.c: In function 'foo':
skavkcop.c:2:1: internal compiler error: in upper_bound, at value-range.h:348
2 | foo (float x, int *y)
| ^~~
0x86077a frange::upper_bound() const
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/value-range.h:348
0x86089c frange::upper_bound() const
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/tree.h:3643
0x86089c foperator_lt::fold_range(irange&, tree_node*, frange const&, frange
const&, relation_kind_t) const
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/range-op-float.cc:550
0x86089c foperator_lt::fold_range(irange&, tree_node*, frange const&, frange
const&, relation_kind_t) const
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/range-op-float.cc:541
0x1d407b7 fold_using_range::range_of_range_op(vrange&, gimple*, fur_source&)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/gimple-range-fold.cc:634
0x1d438d0 fold_using_range::fold_stmt(vrange&, gimple*, fur_source&,
tree_node*)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/gimple-range-fold.cc:555
0x1d43c9c fold_range(vrange&, gimple*, range_query*)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/gimple-range-fold.cc:316
0x10a647d path_range_query::range_of_stmt(vrange&, gimple*, tree_node*)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/gimple-range-path.cc:725
0x1130994 back_threader::find_taken_edge_cond(vec<basic_block_def*, va_heap,
vl_ptr> const&, gcond*)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/tree-ssa-threadbackward.cc:334
0x1130b82 back_threader::maybe_register_path(back_threader_profitability&)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/tree-ssa-threadbackward.cc:248
0x1131098 back_threader::find_paths_to_names(basic_block_def*, bitmap_head*,
unsigned int, back_threader_profitability&)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/tree-ssa-threadbackward.cc:380
0x1131614 back_threader::find_paths_to_names(basic_block_def*, bitmap_head*,
unsigned int, back_threader_profitability&)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/tree-ssa-threadbackward.cc:502
0x11320af back_threader::maybe_thread_block(basic_block_def*)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/tree-ssa-threadbackward.cc:574
0x1132161 back_threader::thread_blocks()
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/tree-ssa-threadbackward.cc:1002
0x11321d3 execute
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220918/work/gcc-13-20220918/gcc/tree-ssa-threadbackward.cc:1104
