Replace another snippet with a call to gimple_range_ssa_names.

When the original patch was applied, I missed a spot which could
also be rewritten to use gimple_range_ssa_names.

	* tree-ssa-threadbackward.cc
	  (back_threader::find_paths_to_names): Replace sequence with
	  a call to gimple_range_ssa_names.

diff --git a/gcc/tree-ssa-threadbackward.cc b/gcc/tree-ssa-threadbackward.cc
index 9725f50e639bd68e1b51762a32a9ca7fd0984434..2a8cfa3ee01a71c8c3303232dfcfd9fec3b3c5d7 100644 (file)
--- a/gcc/tree-ssa-threadbackward.cc
+++ b/gcc/tree-ssa-threadbackward.cc
@@ -435,28 +435,14 @@ back_threader::find_paths_to_names (basic_block bb, bitmap interesting,
                }
              /* For other local defs process their uses, amending
                 imports on the way.  */
-             else if (gassign *ass = dyn_cast <gassign *> (def_stmt))
+             else
                {
                  tree ssa[3];
-                 if (range_op_handler (ass))
-                   {
-                     ssa[0] = gimple_range_ssa_p (gimple_range_operand1 (ass));
-                     ssa[1] = gimple_range_ssa_p (gimple_range_operand2 (ass));
-                     ssa[2] = NULL_TREE;
-                   }
-                 else if (gimple_assign_rhs_code (ass) == COND_EXPR)
-                   {
-                     ssa[0] = gimple_range_ssa_p (gimple_assign_rhs1 (ass));
-                     ssa[1] = gimple_range_ssa_p (gimple_assign_rhs2 (ass));
-                     ssa[2] = gimple_range_ssa_p (gimple_assign_rhs3 (ass));
-                   }
-                 else
-                   continue;
-                 for (unsigned j = 0; j < 3; ++j)
+                 unsigned lim = gimple_range_ssa_names (ssa, 3, def_stmt);
+                 for (unsigned j = 0; j < lim; ++j)
                    {
                      tree rhs = ssa[j];
                      if (rhs
-                         && TREE_CODE (rhs) == SSA_NAME
                          && bitmap_set_bit (m_imports,
                                             SSA_NAME_VERSION (rhs)))
                        {