[Bug rtl-optimization/79125] New: [7 Regression] ICE in rtl_verify_bb_insns, at cfgrtl.c:2661 (error: flow control insn inside a basic block)

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79125

            Bug ID: 79125
           Summary: [7 Regression] ICE in rtl_verify_bb_insns, at
                    cfgrtl.c:2661 (error: flow control insn inside a basic
                    block)
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: powerpc-*-linux-gnu*

gcc-7.0.0-alpha20170115 snapshot ICEs when compiling the following snippet w/
-O2 or -O3:

int za;

void
hl (void)
{
  short int o8 = 0;
  short int m6 = 1;
  short int *ni = &m6;

  for (;;)
    {
      int af;
      short int *fd = (short int *)∋

      if (ni != 0)
        {
          if (m6 != 0)
            *ni = 0;
          else
            za = 0;
          af = (o8 * o8) || o8;
          if (af == 0)
            m6 /= 0;
          while (za != 0)
            {
            }
        }
      *fd = &o8;
      for (af = 0; af < 2; ++af)
        af = za;
    }
}

% powerpc-e300c3-linux-gnu-gcc-7.0.0-alpha20170115 -O2 -w -c aqluuplt.c