* tree-ssa-reassoc.c (undistribute_ops_list): Use create_tmp_reg.

	(can_reassociate_p): Use FLOAT_TYPE_P.
	* tree-vectorizer.h (vect_is_simple_reduction): Rename to ...
	(vect_force_simple_reduction): ... this.
	* tree-parloops.c (gather_scalar_reductions): Use 
	vect_force_simple_reduction.
	* tree-vect-loop.c (vect_is_simple_reduction_1): Rename from
	vect_is_simple_reduction, add modify argument, if true rewrite
	"a-b" into "a+(-b)".
	(vect_is_simple_reduction, vect_force_simple_reduction): New
	functions.
	(vect_analyze_scalar_cycles_1): Use vect_force_simple_reduction.

testsuite/
	* gcc.dg/vect/fast-math-vect-reduc-8.c: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@159226 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 2 deletions

diff --git a/gcc/tree-parloops.c b/gcc/tree-parloops.c
index 69a0b659616..52a6dc424f2 100644
--- a/gcc/tree-parloops.c
+++ b/gcc/tree-parloops.c
@@ -64,7 +64,7 @@ along with GCC; see the file COPYING3.  If not see
 
 /*
   Reduction handling:
-  currently we use vect_is_simple_reduction() to detect reduction patterns.
+  currently we use vect_force_simple_reduction() to detect reduction patterns.
   The code transformation will be introduced by an example.
 
 
@@ -1745,7 +1745,9 @@ gather_scalar_reductions (loop_p loop, htab_t reduction_list)
       if (!simple_iv (loop, loop, res, &iv, true)
 	&& simple_loop_info)
 	{
-           gimple reduc_stmt = vect_is_simple_reduction (simple_loop_info, phi, true, &double_reduc);
+           gimple reduc_stmt = vect_force_simple_reduction (simple_loop_info,
+							    phi, true,
+							    &double_reduc);
 	   if (reduc_stmt && !double_reduc)
               build_new_reduction (reduction_list, reduc_stmt, phi);
         }