[Bug tree-optimization/107920] New: [13 Regression] ICE in execute_todo, at passes.cc:2140

[asolokha at gmx dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107920

            Bug ID: 107920
           Summary: [13 Regression] ICE in execute_todo, at passes.cc:2140
           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: ---
            Target: aarch64-linux-gnu

gcc 13.0.0 20221127 snapshot (g:4ac789789ea866ced24613e4778725d8ec6b0ecf) ICEs
when compiling the following testcase, reduced from
gcc/testsuite/gcc.target/aarch64/sve/acle/general/pr96463-2.c, w/
-march=armv8-a+sve2 -O1 -fno-tree-ccp -fno-tree-forwprop:

#include "arm_sve.h"

svint8_t
test_s8(int8_t *x)
{
  return svld1rq_s8 (svptrue_b8 (), &x[0]);
}

% aarch64-linux-gnu-gcc-13 -march=armv8-a+sve2 -O1 -fno-tree-ccp
-fno-tree-forwprop -c xgdgkm2d.c
during GIMPLE pass: fre
xgdgkm2d.c: In function 'test_s8':
xgdgkm2d.c:7:1: internal compiler error: in execute_todo, at passes.cc:2140
    7 | }
      | ^
0x751734 execute_todo
       
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-13.0.0_p20221127/work/gcc-13-20221127/gcc/passes.cc:2140