[Bug tree-optimization/69013] [5/6 Regression] gfortran-5.3.0 ICE in prune_uninit_phi_opnds_in_unrealizable_paths, at tree-ssa-uninit.c:1121

[davidxl at google dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69013

davidxl at google dot com changed:

           What    |Removed                     |Added
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                 CC|                            |davidxl at google dot com

--- Comment #5 from davidxl at google dot com ---
The assertion is indeed too strict. See

static unsigned
compute_uninit_opnds_pos (gphi *phi)
{
  size_t i, n;
  unsigned uninit_opnds = 0;

  n = gimple_phi_num_args (phi);
  /* Bail out for phi with too many args.  */
  if (n > 32)
    return 0;
 ...
}

it is possible that empty bitset is returned -- so the fix looks ok.