re PR middle-end/54362 (COND_EXPR not understood by either alias or ITM)

2012-09-03  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/54362
	* tree-ssa-structalias.c (find_func_aliases): Handle COND_EXPR.

From-SVN: r190889

gcc/ChangeLog

+2012-09-03  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/54362
+	* tree-ssa-structalias.c (find_func_aliases): Handle COND_EXPR.
+
 2012-09-03  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
 
 	* config/s390/s390.c (s390_loadrelative_operand_p): New function.
 	(s390_check_qrst_address, print_operand_address): Use
 	s390_loadrelative_operand_p instead of s390_symref_operand_p.
-	(s390_check_symref_alignment): Accept pointer size alignment for GOT slots.
+	(s390_check_symref_alignment): Accept pointer size alignment for
+	GOT slots.
 	(legitimize_pic_address): Use load relative on z10 or later.
 
 2012-09-03  Jakub Jelinek  <jakub@redhat.com>

gcc/tree-ssa-structalias.c

@@ -4527,6 +4527,18 @@ find_func_aliases (gimple origt)
 			 && !POINTER_TYPE_P (TREE_TYPE (rhsop))))
 		   || gimple_assign_single_p (t))
 	    get_constraint_for_rhs (rhsop, &rhsc);
+	  else if (code == COND_EXPR)
+	    {
+	      /* The result is a merge of both COND_EXPR arms.  */
+	      VEC (ce_s, heap) *tmp = NULL;
+	      struct constraint_expr *rhsp;
+	      unsigned i;
+	      get_constraint_for_rhs (gimple_assign_rhs2 (t), &rhsc);
+	      get_constraint_for_rhs (gimple_assign_rhs3 (t), &tmp);
+	      FOR_EACH_VEC_ELT (ce_s, tmp, i, rhsp)
+		VEC_safe_push (ce_s, heap, rhsc, rhsp);
+	      VEC_free (ce_s, heap, tmp);
+	    }
 	  else if (truth_value_p (code))
 	    /* Truth value results are not pointer (parts).  Or at least
 	       very very unreasonable obfuscation of a part.  */