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2012-04-12 Richard Guenther <rguenther@suse.de>
[pf3gnuchains/gcc-fork.git] / gcc / ChangeLog
index a8d3d59..6f030d0 100644 (file)
@@ -1,3 +1,13 @@
+2012-04-12  Richard Guenther  <rguenther@suse.de>
+
+       PR tree-optimization/52943
+       * tree-chrec.h (chrec_is_positive): Remove.
+       * tree-scalar-evolution.c (chrec_is_positive): Move ...
+       * tree-data-ref.c (chrec_is_positive): ... here.  Make static.
+       Return false for a constant zero instead of negative.
+       (analyze_siv_subscript_cst_affine): Handle zero difference
+       in the initial condition explicitely.
+
 2012-04-10  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
        PR middle-end/52894