This makes the code ready for the lightweight overloads, reducing
the amount of checking we have to compile in stage2.

Bootstrapped and tested on x86_64-unknown-linux-gnu, applied.

Richard.

2015-08-04  Richard Biener  <rguent...@suse.de>

        * genmatch.c (dt_node::gen_kids_1): Use gassign and gcall in
        generated code.
        (dt_operand::gen_gimple_expr): Adjust.

Index: gcc/genmatch.c
===================================================================
--- gcc/genmatch.c      (revision 226576)
+++ gcc/genmatch.c      (working copy)
@@ -2396,7 +2396,7 @@ dt_operand::gen_gimple_expr (FILE *f, in
                 match this.  The only sensible operand types are
                 SSA names and invariants.  */
              fprintf_indent (f, indent,
-                             "tree %s = TREE_OPERAND (gimple_assign_rhs1 
(def_stmt), %i);\n",
+                             "tree %s = TREE_OPERAND (gimple_assign_rhs1 
(def), %i);\n",
                              child_opname, i);
              fprintf_indent (f, indent,
                              "if ((TREE_CODE (%s) == SSA_NAME\n",
@@ -2414,12 +2414,12 @@ dt_operand::gen_gimple_expr (FILE *f, in
            }
          else
            fprintf_indent (f, indent,
-                           "tree %s = gimple_assign_rhs%u (def_stmt);\n",
+                           "tree %s = gimple_assign_rhs%u (def);\n",
                            child_opname, i + 1);
        }
       else
        fprintf_indent (f, indent,
-                       "tree %s = gimple_call_arg (def_stmt, %u);\n",
+                       "tree %s = gimple_call_arg (def, %u);\n",
                        child_opname, i);
       fprintf_indent (f, indent,
                      "if ((%s = do_valueize (valueize, %s)))\n",
@@ -2600,9 +2600,9 @@ dt_node::gen_kids_1 (FILE *f, int indent
       if (exprs_len)
        {
          fprintf_indent (f, indent,
-                         "if (is_gimple_assign (def_stmt))\n");
+                         "if (gassign *def = dyn_cast <gassign *> 
(def_stmt))\n");
          fprintf_indent (f, indent,
-                         "  switch (gimple_assign_rhs_code (def_stmt))\n");
+                         "  switch (gimple_assign_rhs_code (def))\n");
          indent += 4;
          fprintf_indent (f, indent, "{\n");
          for (unsigned i = 0; i < exprs_len; ++i)
@@ -2625,16 +2625,15 @@ dt_node::gen_kids_1 (FILE *f, int indent
 
       if (fns_len)
        {
-         if (exprs_len)
-           fprintf_indent (f, indent, "else ");
-         else
-           fprintf_indent (f, indent, " ");
-
-         fprintf (f, "if (gimple_call_builtin_p (def_stmt, 
BUILT_IN_NORMAL))\n");
+         fprintf_indent (f, indent,
+                         "%sif (gimple_call_builtin_p (def_stmt, 
BUILT_IN_NORMAL))\n",
+                         exprs_len ? "else " : "");
          fprintf_indent (f, indent,
                          "  {\n");
          fprintf_indent (f, indent,
-                         "    tree fndecl = gimple_call_fndecl (def_stmt);\n");
+                         "    gcall *def = as_a <gcall *> (def_stmt);\n");
+         fprintf_indent (f, indent,
+                         "    tree fndecl = gimple_call_fndecl (def);\n");
          fprintf_indent (f, indent,
                          "    switch (DECL_FUNCTION_CODE (fndecl))\n");
          fprintf_indent (f, indent,

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