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2010-04-13 Richard Guenther <rguenther@suse.de>
[pf3gnuchains/gcc-fork.git] / gcc / ChangeLog
index 09b704a..32b9987 100644 (file)
@@ -1,3 +1,24 @@
+2010-04-13  Richard Guenther  <rguenther@suse.de>
+
+       * tree-vect-data-refs.c (vect_analyze_data_ref_dependence):
+       Only add RW dependence for dependence distance zero.
+       Adjust maximal vectorization factor according to dependences.
+       Move alignment handling ...
+       (vect_find_same_alignment_drs): ... here.  New function.
+       (vect_analyze_data_ref_dependences): Adjust.
+       (vect_analyze_data_refs_alignment): Call vect_find_same_alignment_drs.
+       (vect_analyze_data_refs): Adjust minimal vectorization factor
+       according to data references.
+       * tree-vect-loop.c (vect_analyze_loop): Analyze data-ref
+       dependences before determining the vectorization factor.
+       Analyze alignment after determining the vectorization factor.
+       * tree-vect-slp.c ((vect_slp_analyze_bb): Analyze data-ref
+       dependences before alignment.
+       * tree-vectorizer.h (vect_analyze_data_ref_dependences):
+       Adjust prototype.
+       (vect_analyze_data_refs): Likewise.
+       (MAX_VECTORIZATION_FACTOR): New define.
+
 2010-04-13  Duncan Sands  <baldrick@free.fr>
 
        * except.h (lang_eh_type_covers): Remove.