2014-11-25 Richard Biener <rguenther@suse.de>

	PR tree-optimization/61927
	* tree-vect-loop.c (vect_analyze_loop_2): Revert ordering
	of group and pattern analysis to the one in GCC 4.8.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218046 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 7 insertions, 7 deletions

diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c
index a4f9501b29e..802c3a3ec94 100644
--- a/gcc/tree-vect-loop.c
+++ b/gcc/tree-vect-loop.c
@@ -1662,6 +1662,13 @@ vect_analyze_loop_2 (loop_vec_info loop_vinfo)
       return false;
     }
 
+  /* Classify all cross-iteration scalar data-flow cycles.
+     Cross-iteration cycles caused by virtual phis are analyzed separately.  */
+
+  vect_analyze_scalar_cycles (loop_vinfo);
+
+  vect_pattern_recog (loop_vinfo, NULL);
+
   /* Analyze the access patterns of the data-refs in the loop (consecutive,
      complex, etc.). FORNOW: Only handle consecutive access pattern.  */
 
@@ -1674,13 +1681,6 @@ vect_analyze_loop_2 (loop_vec_info loop_vinfo)
       return false;
     }
 
-  /* Classify all cross-iteration scalar data-flow cycles.
-     Cross-iteration cycles caused by virtual phis are analyzed separately.  */
-
-  vect_analyze_scalar_cycles (loop_vinfo);
-
-  vect_pattern_recog (loop_vinfo, NULL);
-
   /* Data-flow analysis to detect stmts that do not need to be vectorized.  */
 
   ok = vect_mark_stmts_to_be_vectorized (loop_vinfo);