[Bug tree-optimization/97270] New: [11 Regression] ICE in do_store_flag, at expr.c:12247 since r11-1445-g502d63b6d61415

[marxin at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97270

            Bug ID: 97270
           Summary: [11 Regression] ICE in do_store_flag, at expr.c:12247
                    since r11-1445-g502d63b6d61415
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: rguenth at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-linux
            Target: s390x-linux-gnu

One more VEC_COND_EXPR fallout:

$ ./xgcc -B.
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/vect/vect-cond-reduc-6.c -O2
-march=z13 -ftree-loop-vectorize -S
during RTL pass: expand
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/vect/vect-cond-reduc-6.c: In
function ‘f’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/vect/vect-cond-reduc-6.c:4:1:
internal compiler error: in do_store_flag, at expr.c:12247
    4 | f (int *y)
      | ^
0xc66a47 do_store_flag
        /home/marxin/Programming/gcc2/gcc/expr.c:12247
0xc59b26 expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
        /home/marxin/Programming/gcc2/gcc/expr.c:9608
0xac32eb expand_gimple_stmt_1
        /home/marxin/Programming/gcc2/gcc/cfgexpand.c:3786
0xac3538 expand_gimple_stmt
        /home/marxin/Programming/gcc2/gcc/cfgexpand.c:3847
0xacb9f4 expand_gimple_basic_block
        /home/marxin/Programming/gcc2/gcc/cfgexpand.c:5888
0xacd856 execute
        /home/marxin/Programming/gcc2/gcc/cfgexpand.c:6572
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