2010-06-02 Richard Guenther <rguenther@suse.de>

[pf3gnuchains/gcc-fork.git] / gcc / tree-vect-patterns.c

diff --git a/gcc/tree-vect-patterns.c b/gcc/tree-vect-patterns.c
index 55b9d50..eb97395 100644 (file)
--- a/gcc/tree-vect-patterns.c
+++ b/gcc/tree-vect-patterns.c
@@ -1,5 +1,5 @@
 /* Analysis Utilities for Loop Vectorization.
-   Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
    Contributed by Dorit Nuzman <dorit@il.ibm.com>
 
 This file is part of GCC.
@@ -26,7 +26,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "tree.h"
 #include "target.h"
 #include "basic-block.h"
-#include "diagnostic.h"
+#include "gimple-pretty-print.h"
 #include "tree-flow.h"
 #include "tree-dump.h"
 #include "cfgloop.h"
@@ -670,6 +670,8 @@ vect_pattern_recog_1 (
   tree pattern_vectype;
   tree type_in, type_out;
   enum tree_code code;
+  int i;
+  gimple next;
 
   pattern_stmt = (* vect_recog_func) (stmt, &type_in, &type_out);
   if (!pattern_stmt)
@@ -735,7 +737,13 @@ vect_pattern_recog_1 (
   STMT_VINFO_IN_PATTERN_P (stmt_info) = true;
   STMT_VINFO_RELATED_STMT (stmt_info) = pattern_stmt;
 
-  return;
+  /* Patterns cannot be vectorized using SLP, because they change the order of
+     computation.  */
+  for (i = 0; VEC_iterate (gimple, LOOP_VINFO_REDUCTIONS (loop_vinfo), i,
+                           next);
+       i++)
+    if (next == stmt)
+      VEC_ordered_remove (gimple, LOOP_VINFO_REDUCTIONS (loop_vinfo), i); 
 }