From: Richard Sandiford <richard.sandiford@linaro.org>
Date: Wed, 20 Apr 2011 08:23:03 +0000 (+0000)
Subject: tree-vect-stmts.c (vectorizable_store): Only chain one related statement per copy.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1da0876c9551590b2ff880e14f9510cd6e5bd467;p=gcc.git

tree-vect-stmts.c (vectorizable_store): Only chain one related statement per copy.

gcc/
	* tree-vect-stmts.c (vectorizable_store): Only chain one related
	statement per copy.

From-SVN: r172759
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e9b126bbd63..3474847c9d1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2011-04-20  Richard Sandiford  <richard.sandiford@linaro.org>
+
+	* tree-vect-stmts.c (vectorizable_store): Only chain one related
+	statement per copy.
+
 2011-04-20  Richard Sandiford  <richard.sandiford@linaro.org>
 
 	* Makefile.in (INTERNAL_FN_DEF, INTERNAL_FN_H): Define.
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index 0c7ab5ada88..879153d8031 100644
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -3632,6 +3632,7 @@ vectorizable_store (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt,
 		bump_vector_ptr (dataref_ptr, ptr_incr, gsi, stmt, NULL_TREE);
 	}
 
+      new_stmt = NULL;
       if (strided_store)
 	{
 	  result_chain = VEC_alloc (tree, heap, group_size);
@@ -3688,16 +3689,18 @@ vectorizable_store (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt,
           if (slp)
             continue;
 
-          if (j == 0)
-            STMT_VINFO_VEC_STMT (stmt_info) = *vec_stmt =  new_stmt;
-	  else
-	    STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt;
-
-	  prev_stmt_info = vinfo_for_stmt (new_stmt);
 	  next_stmt = DR_GROUP_NEXT_DR (vinfo_for_stmt (next_stmt));
 	  if (!next_stmt)
 	    break;
 	}
+      if (!slp)
+	{
+	  if (j == 0)
+	    STMT_VINFO_VEC_STMT (stmt_info) = *vec_stmt = new_stmt;
+	  else
+	    STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt;
+	  prev_stmt_info = vinfo_for_stmt (new_stmt);
+	}
     }
 
   VEC_free (tree, heap, dr_chain);