https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92069
Bug ID: 92069
Summary: ice in vect_analyze_scalar_cycles_1, at
tree-vect-loop.c:560
Product: gcc
Version: 10.0
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 47024
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47024&action=edit
C source code
For the attached C code, compiled by recent gcc trunk and compiler
flag -O3, does this:
../results.276750/bin/gcc
../results.276800.ubsan/bin/gcc
during GIMPLE pass: vect
csrc/phylip.c: In function ‘initlaguerrecat’:
csrc/phylip.c:778:6: internal compiler error: in vect_analyze_scalar_cycles_1,
at tree-vect-loop.c:560
0x70c679 vect_analyze_scalar_cycles_1
../../trunk/gcc/tree-vect-loop.c:560
0x1012310 vect_analyze_scalar_cycles
../../trunk/gcc/tree-vect-loop.c:652
0x1012310 vect_analyze_loop_2
../../trunk/gcc/tree-vect-loop.c:1873
0x1015439 vect_analyze_loop(loop*, _loop_vec_info*, vec_info_shared*)
../../trunk/gcc/tree-vect-loop.c:2336
The problem seems to start between revision 276750 and 276800.
I will have my usual go at reducing the code.
