[Bug target/101819] New: [12 Regression] ICE in expand_expr_real_2, at expr.c:9552 since r12-2789-gf31da42e047e8018ca6ad9809273bc7efb6ffcaf

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101819

            Bug ID: 101819
           Summary: [12 Regression] ICE in expand_expr_real_2, at
                    expr.c:9552 since
                    r12-2789-gf31da42e047e8018ca6ad9809273bc7efb6ffcaf
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          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-gnu
            Target: riscv64-unknown-linux-gnu

The following fails:

$ ./xgcc -B.
/home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/execute/pr51581-1.c
-ftree-loop-vectorize -O1 -S
during RTL pass: expand
/home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/execute/pr51581-1.c:
In function ‘f2’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/execute/pr51581-1.c:24:10:
internal compiler error: in expand_expr_real_2, at expr.c:9552
   24 |     d[i] = b[i] / 3;
      |     ~~~~~^~~~~~~~~~
0xdd51c5 expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
        /home/marxin/Programming/gcc2/gcc/expr.c:9552
0xdd91fb expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        /home/marxin/Programming/gcc2/gcc/expr.c:10480
0xdd1573 expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
        /home/marxin/Programming/gcc2/gcc/expr.c:8713
0xdb0813 expand_expr
        /home/marxin/Programming/gcc2/gcc/expr.h:301
0xdd60ef expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
        /home/marxin/Programming/gcc2/gcc/expr.c:9780
0xdd91fb expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        /home/marxin/Programming/gcc2/gcc/expr.c:10480
0xdd1573 expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
        /home/marxin/Programming/gcc2/gcc/expr.c:8713
0xdb0848 expand_normal
        /home/marxin/Programming/gcc2/gcc/expr.h:307
0xdcc54a store_field
        /home/marxin/Programming/gcc2/gcc/expr.c:7439
0xdc8875 store_constructor_field
        /home/marxin/Programming/gcc2/gcc/expr.c:6672
0xdcb9fe store_constructor
        /home/marxin/Programming/gcc2/gcc/expr.c:7289
0xdd14b4 expand_constructor
        /home/marxin/Programming/gcc2/gcc/expr.c:8634
0xddaad0 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        /home/marxin/Programming/gcc2/gcc/expr.c:10819
0xdd1573 expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
        /home/marxin/Programming/gcc2/gcc/expr.c:8713
0xdd923f expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        /home/marxin/Programming/gcc2/gcc/expr.c:10484
0xdd1573 expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
        /home/marxin/Programming/gcc2/gcc/expr.c:8713
0xdc658f store_expr(tree_node*, rtx_def*, int, bool, bool)
        /home/marxin/Programming/gcc2/gcc/expr.c:6064
0xdc4e24 expand_assignment(tree_node*, tree_node*, bool)
        /home/marxin/Programming/gcc2/gcc/expr.c:5796
0xc3a209 expand_gimple_stmt_1
        /home/marxin/Programming/gcc2/gcc/cfgexpand.c:3945
0xc3a5fe expand_gimple_stmt
        /home/marxin/Programming/gcc2/gcc/cfgexpand.c:4043
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