* tree-parloops.c (loop_parallel_p): Call vect_is_simple_reduction

	with additional argument.
	* tree-vectorizer.h (enum vect_def_type): Add 
	vect_double_reduction_def.
	(vect_is_simple_reduction): Add argument.
	* tree-vect-loop.c (vect_determine_vectorization_factor): Fix 
	indentation.
	(vect_analyze_scalar_cycles_1): Detect double reduction. Call
	vect_is_simple_reduction with additional argument.
	(vect_analyze_loop_operations): Handle exit phi nodes in case of
	double reduction.
	(reduction_code_for_scalar_code): Handle additional codes by
	returning ERROR_MARK for them. Fix comment and indentation.
	(vect_is_simple_reduction): Fix comment, add argument to specify
	double reduction. Detect double reduction.
	(get_initial_def_for_induction): Fix indentation.
	(get_initial_def_for_reduction): Fix comment and indentation.
	Handle double reduction. Create initial definitions that do not
	require adjustment if ADJUSTMENT_DEF is NULL. Handle additional cases.
	(vect_create_epilog_for_reduction): Fix comment, add argument to
	handle double reduction. Use PLUS_EXPR in case of MINUS_EXPR in
	epilogue result extraction. Create double reduction phi node and
	replace relevant uses.
	(vectorizable_reduction): Call vect_is_simple_reduction with
	additional argument. Fix indentation. Update epilogue code treatment
	according to the changes in reduction_code_for_scalar_code. Check 
	for double reduction. Call vect_create_epilog_for_reduction with
	additional argument.
	* tree-vect-stmts.c (process_use): Handle double reduction, update
	documentation.
	(vect_mark_stmts_to_be_vectorized): Handle double reduction.
	(vect_get_vec_def_for_operand): Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@149526 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 3 insertions, 1 deletions

diff --git a/gcc/tree-parloops.c b/gcc/tree-parloops.c
index 5f11fc77a1b..28c96a26f59 100644
--- a/gcc/tree-parloops.c
+++ b/gcc/tree-parloops.c
@@ -284,13 +284,15 @@ loop_parallel_p (struct loop *loop, htab_t reduction_list,
     {
       gimple phi = gsi_stmt (gsi);
       gimple reduc_stmt = NULL;
+      bool dummy;
 
       /* ??? TODO: Change this into a generic function that 
          recognizes reductions.  */
       if (!is_gimple_reg (PHI_RESULT (phi)))
 	continue;
       if (simple_loop_info)
-	reduc_stmt = vect_is_simple_reduction (simple_loop_info, phi, true);
+	reduc_stmt = vect_is_simple_reduction (simple_loop_info, phi, true, 
+                                               &dummy);
 
       /*  Create a reduction_info struct, initialize it and insert it to 
          the reduction list.  */