From: Richard Sandiford <richard.sandiford@linaro.org>
Date: Thu, 14 Apr 2011 11:54:30 +0000 (+0000)
Subject: tree-vect-stmts.c (vectorizable_load): Allocate and free dr_chain within the per... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5ce1ee7fdd558b1bb5f02f84cbc435acf8184c9b;p=gcc.git

tree-vect-stmts.c (vectorizable_load): Allocate and free dr_chain within the per-copy loop.

gcc/
	* tree-vect-stmts.c (vectorizable_load): Allocate and free dr_chain
	within the per-copy loop.

From-SVN: r172422
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f813f740778..572b6affd33 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2011-04-14  Richard Sandiford  <richard.sandiford@linaro.org>
+
+	* tree-vect-stmts.c (vectorizable_load): Allocate and free dr_chain
+	within the per-copy loop.
+
 2011-04-14  Richard Sandiford  <richard.sandiford@linaro.org>
 
 	* tree-vect-stmts.c (vectorizable_load): Print the number of copies
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index 9e9a0bbe2f3..eeb922377a8 100644
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -3961,8 +3961,6 @@ vectorizable_load (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt,
     	}
       else
 	vec_num = group_size;
-
-      dr_chain = VEC_alloc (tree, heap, vec_num);
     }
   else
     {
@@ -4116,6 +4114,9 @@ vectorizable_load (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt,
         dataref_ptr =
 		bump_vector_ptr (dataref_ptr, ptr_incr, gsi, stmt, NULL_TREE);
 
+      if (strided_load || slp_perm)
+	dr_chain = VEC_alloc (tree, heap, vec_num);
+
       for (i = 0; i < vec_num; i++)
 	{
 	  if (i > 0)
@@ -4325,8 +4326,6 @@ vectorizable_load (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt,
 	        return false;
 
 	      *vec_stmt = STMT_VINFO_VEC_STMT (stmt_info);
-              VEC_free (tree, heap, dr_chain);
-	      dr_chain = VEC_alloc (tree, heap, group_size);
 	    }
           else
 	    {
@@ -4337,11 +4336,10 @@ vectorizable_load (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt,
 	      prev_stmt_info = vinfo_for_stmt (new_stmt);
 	    }
         }
+      if (dr_chain)
+	VEC_free (tree, heap, dr_chain);
     }
 
-  if (dr_chain)
-    VEC_free (tree, heap, dr_chain);
-
   return true;
 }