https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85478
Bug ID: 85478
Summary: ICE with single element vector
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: krebbel at gcc dot gnu.org
Target Milestone: ---
Created attachment 43996
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43996&action=edit
Autoreduced testcase
Compiling the attached testcase triggers an ICE
cc1plus -march=arch12 -O3 -fpermissive t.cc
Performing interprocedural optimizations
<*free_lang_data> <visibility> <build_ssa_passes> <opt_local_passes>
<targetclone> <free-fnsummary> <whole-program> <profile_estimate> <icf>
<devirt> <cp> <fnsummary> <inline> <pure-const> <free-fnsummary> <static-var>
<single-use> <comdats>Assembling functions:
<materialize-all-clones> s<ae>& s<ae>::operator=(const s<t>&) [with t =
ab<float>; ae = ab<long double>]during GIMPLE pass: vect
t2.cc: In member function ‘s<ae>& s<ae>::operator=(const s<t>&) [with t =
ab<float>; ae = ab<long double>]’:
t2.cc:39:8: internal compiler error: in exact_div, at poly-int.h:2139
s<ae> &s<ae>::operator=(const s<t> &g) {
^~~~~
0x21e8941 poly_int<1u, poly_result<unsigned long, if_nonpoly<int, int,
poly_int_traits<int>::is_poly>::type, poly_coeff_pair_traits<unsigned long,
if_nonpoly<int, int, poly_int_traits<int>::is_poly>::type>::result_kind>::type>
exact_div<1u, unsigned long, int>(poly_int_pod<1u, unsigned long> const&, int)
/home/andreas/build/../gcc/gcc/poly-int.h:2139
0x21e8941 vect_grouped_store_supported(tree_node*, unsigned long)
/home/andreas/build/../gcc/gcc/tree-vect-data-refs.c:5150
0x1ce5115 vect_analyze_loop_2
/home/andreas/build/../gcc/gcc/tree-vect-loop.c:2495
0x1ce5115 vect_analyze_loop(loop*, _loop_vec_info*)
/home/andreas/build/../gcc/gcc/tree-vect-loop.c:2621
0x1d03e13 vectorize_loops()
/home/andreas/build/../gcc/gcc/tree-vectorizer.c:664
