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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/64121] [5 Regression] ICE: SSA corruption with -O -fsanitize=undefined
Date: Mon, 01 Dec 2014 13:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64121

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, indeed.  So perhaps better replace the:
1565        base = gimple_assign_rhs1 (def_stmt);
line in the loop with
{
  tree rhs1 = gimple_assign_rhs1 (def_stmt);
  if (TREE_CODE (rhs1) == SSA_NAME && SSA_NAME_OCCURS_IN_ABNORMAL_PHI (rhs1))
    break;
  else
    base = rhs1;
}
or so?