[Bug rtl-optimization/58033] counterproductive bb-reorder

[olegendo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58033

--- Comment #5 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Another somewhat related SH example, compiled with -m4 -O2 -ml on rev 205313:

int
foo1 (long long value)
{
  const long long constant = 0xc000000080000000LL;

  if (value < constant)
    return 1;
  else
    return 2;
}

        mov.l   .L12,r1
        cmp/ge  r1,r5
        bt/s    .L10         <<< should branch to L10
        cmp/gt  r1,r5
        mov     #1,r0
.L6:
        rts    
        nop
    .align 1
.L10:
        bf      .L11         <<< never branches, always falls through
.L5:
        rts
        mov    #2,r0
        .align 1
.L11:
        mov.l   .L13,r1
        cmp/hs  r1,r4
        bt      .L5
        mov     #1,r0
        bra     .L6          <<< could just duplicate BB from L6 here
        nop                      (see also PR 58615)