https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109025
Bug ID: 109025
Summary: ice in nested_in_vect_loop_p
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Created attachment 54586
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54586&action=edit
C source code
The attached C code, when compiled by recent gcc and compiler flag -O3,
does this:
runData/keep/in.35565.c: In function ‘func_1.isra’:
runData/keep/in.35565.c:187:16: internal compiler error: Segmentation fault
0xdb5149 crash_signal(int)
../../trunk.d1/gcc/toplev.cc:314
0x10424d1 nested_in_vect_loop_p(loop*, _stmt_vec_info*)
../../trunk.d1/gcc/tree-vectorizer.h:1648
0x10424d1 vectorizable_reduction(_loop_vec_info*, _stmt_vec_info*, _slp_tree*,
_
slp_instance*, vec<stmt_info_for_cost, va_heap, vl_ptr>*)
../../trunk.d1/gcc/tree-vect-loop.cc:6943
The bug first seems to occur sometime between git hash g:4acc4c2be84d6607,
dated 20221101 and g:d0a3d55ae4a2656f, dated 20221201.
I have a reduction running.
