PR target/45250

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

diff --git a/gcc/tree-vect-patterns.c b/gcc/tree-vect-patterns.c
index ea82755..0d5824c 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"
@@ -36,6 +36,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "tree-data-ref.h"
 #include "tree-vectorizer.h"
 #include "recog.h"
+#include "diagnostic-core.h"
 #include "toplev.h"
 
 /* Function prototypes */
@@ -254,6 +255,11 @@ vect_recog_dot_prod_pattern (gimple last_stmt, tree *type_in, tree *type_out)
 
   prod_type = half_type;
   stmt = SSA_NAME_DEF_STMT (oprnd0);
+
+  /* It could not be the dot_prod pattern if the stmt is outside the loop.  */
+  if (!flow_bb_inside_loop_p (loop, gimple_bb (stmt)))
+    return NULL;
+
   /* FORNOW.  Can continue analyzing the def-use chain when this stmt in a phi
      inside the loop (in case we are analyzing an outer-loop).  */
   if (!is_gimple_assign (stmt))
@@ -699,6 +705,8 @@ vect_pattern_recog_1 (
        type_out = get_vectype_for_scalar_type (type_out);
       else
        type_out = type_in;
+      if (!type_out)
+       return;
       pattern_vectype = type_out;
 
       if (is_gimple_assign (pattern_stmt))
@@ -712,8 +720,7 @@ vect_pattern_recog_1 (
       optab = optab_for_tree_code (code, type_in, optab_default);
       vec_mode = TYPE_MODE (type_in);
       if (!optab
-          || (icode = optab_handler (optab, vec_mode)->insn_code) ==
-              CODE_FOR_nothing
+          || (icode = optab_handler (optab, vec_mode)) == CODE_FOR_nothing
           || (insn_data[icode].operand[0].mode != TYPE_MODE (type_out)))
        return;
     }
@@ -739,9 +746,7 @@ vect_pattern_recog_1 (
 
   /* 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++)
+  FOR_EACH_VEC_ELT (gimple, LOOP_VINFO_REDUCTIONS (loop_vinfo), i, next)
     if (next == stmt)
       VEC_ordered_remove (gimple, LOOP_VINFO_REDUCTIONS (loop_vinfo), i); 
 }