[Bug target/102211] New: ICE introduced by r12-3277

[crazylht at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102211

            Bug ID: 102211
           Summary: ICE introduced by r12-3277
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: crazylht at gmail dot com
                CC: sch...@linux-m68k.org
  Target Milestone: ---
            Target: risv64

cat test.c

float
foo (float a, long b)
{
  union{float a[2];
    long b;}c;
  c.b = b;
  return c.a[0] * a;
}


gcc test.c -O2 -S

test.c:8:1: error: this is the insn:
(insn 12 19 13 2 (set (reg/i:SF 42 fa0)
        (mult:SF (reg:SF 77)
            (subreg:SF (reg:DI 80 [78]) 0))) "test.c":8:1 17 {mulsf3}
     (expr_list:REG_DEAD (reg:DI 80 [78])
        (expr_list:REG_DEAD (reg:SF 77)
            (nil))))
during RTL pass: reload