[PATCH][match-and-simplify] match-and-simplify from fold_stmt

[Richard Biener]

This adds a dispatch from fold_stmt (!inplace for now) to
match-and-simplify.  Mainly to get more testing coverage.

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

Richard.

2014-05-15  Richard Biener  <rguent...@suse.de>

        * gimple-fold.c (fold_stmt_1): Dispatch to
        gimple_match_and_simplify.

Index: gcc/gimple-fold.c
===================================================================
--- gcc/gimple-fold.c   (revision 210414)
+++ gcc/gimple-fold.c   (working copy)
@@ -1393,6 +1393,13 @@ fold_stmt_1 (gimple_stmt_iterator *gsi,
        }
     }
 
+  /* Dispatch to pattern-based folding.
+     ???  Do this after the previous stuff as fold_stmt is used to make
+     stmts valid gimple again via maybe_fold_reference of ops.  */
+  if (!inplace
+      && gimple_match_and_simplify (gsi, NULL))
+    changed = true;
+
   return changed;
 }