* bb-reorder.c (copy_bb, duplicate_computed_gotos): Add argument

	to duplicate_block.
	* cfghooks.c (duplicate_block): Added position where to place
	new block as argument.
	* cfghooks.h (duplicate_block): Declaration changed.
	* cfglayout.c (copy_bbs): Add argument after.  Pass it to
	duplicate_block.
	* cfglayout.h (copy_bbs): Declaration changed.
	* cfgloop.h (loop_version): Declaration changed.
	* cfgloopmanip.c (duplicate_loop_to_header_edge): Pass
	position to copy_bbs.
	(loop_version): Pass position to duplicate_loop_to_header_edge.
	Add place_after argument and position new blocks according to
	it.
	* modulo-sched.c (sms_schedule): Pass place_after argument
	to loop_version.
	* tracer.c (tail_duplicate): Pass argument to duplicate_block.
	* tree-cfg.c (split_edge_bb_loc): New function.
	(tree_split_edge, tree_duplicate_sese_region): Use split_edge_bb_loc
	to determine position of new blocks.
	* tree-ssa-loop-unswitch.c (tree_unswitch_loop): Pass argument
	to loop_version.
	* tree-ssa-threadupdate.c (create_block_for_threading): Pass
	argument to duplicate_block.
	* tree-vectorizer.c (slpeel_tree_duplicate_loop_to_edge_cfg):
	Pass position to copy_bbs.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@103437 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 7 insertions, 3 deletions

diff --git a/gcc/cfglayout.c b/gcc/cfglayout.c
index c63c6f7a4cf..9cc2f8fa709 100644
--- a/gcc/cfglayout.c
+++ b/gcc/cfglayout.c
@@ -1243,12 +1243,15 @@ end:
    is copied, we do not set the new blocks as header or latch.
 
    Created copies of N_EDGES edges in array EDGES are stored in array NEW_EDGES,
-   also in the same order.  */
+   also in the same order.
+   
+   Newly created basic blocks are put after the basic block AFTER in the
+   instruction stream, and the order of the blocks in BBS array is preserved.  */
 
 void
 copy_bbs (basic_block *bbs, unsigned n, basic_block *new_bbs,
 	  edge *edges, unsigned num_edges, edge *new_edges,
-	  struct loop *base)
+	  struct loop *base, basic_block after)
 {
   unsigned i, j;
   basic_block bb, new_bb, dom_bb;
@@ -1259,7 +1262,8 @@ copy_bbs (basic_block *bbs, unsigned n, basic_block *new_bbs,
     {
       /* Duplicate.  */
       bb = bbs[i];
-      new_bb = new_bbs[i] = duplicate_block (bb, NULL);
+      new_bb = new_bbs[i] = duplicate_block (bb, NULL, after);
+      after = new_bb;
       bb->flags |= BB_DUPLICATED;
       /* Add to loop.  */
       add_bb_to_loop (new_bb, bb->loop_father->copy);