Fix PR46924: Do not detect reductions outside the current SESE region.

2010-12-16  Sebastian Pop  <sebastian.pop@amd.com>

	PR tree-optimization/46924
	* graphite-sese-to-poly.c (detect_commutative_reduction): Do not
	detect reductions outside the current SESE region.
	* sese.h (stmt_in_sese_p): New.
	(defined_in_sese_p): Call stmt_in_sese_p.

	* gcc.dg/graphite/pr46924.c: New.

From-SVN: r167962

1 files changed, 10 insertions, 3 deletions

diff --git a/gcc/sese.h b/gcc/sese.h
index 10bf874..97807d8 100644
--- a/gcc/sese.h
+++ b/gcc/sese.h
@@ -114,15 +114,22 @@ bb_in_sese_p (basic_block bb, sese region)
   return bb_in_region (bb, entry, exit);
 }
 
+/* Returns true when STMT is defined in REGION.  */
+
+static inline bool
+stmt_in_sese_p (gimple stmt, sese region)
+{
+  basic_block bb = gimple_bb (stmt);
+  return bb && bb_in_sese_p (bb, region);
+}
+
 /* Returns true when NAME is defined in REGION.  */
 
 static inline bool
 defined_in_sese_p (tree name, sese region)
 {
   gimple stmt = SSA_NAME_DEF_STMT (name);
-  basic_block bb = gimple_bb (stmt);
-
-  return bb && bb_in_sese_p (bb, region);
+  return stmt_in_sese_p (stmt, region);
 }
 
 /* Returns true when LOOP is in REGION.  */