Mercurial > hg > CbC > CbC_gcc

diff gcc/tree-ssa-sink.c @ 132:d34655255c78

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update gcc-8.2
author mir3636
date Thu, 25 Oct 2018 10:21:07 +0900
parents 84e7813d76e9
children 1830386684a0
line wrap: on
line diff
--- a/gcc/tree-ssa-sink.c	Thu Oct 25 08:08:40 2018 +0900
+++ b/gcc/tree-ssa-sink.c	Thu Oct 25 10:21:07 2018 +0900
@@ -1,5 +1,5 @@
 /* Code sinking for trees
-   Copyright (C) 2001-2017 Free Software Foundation, Inc.
+   Copyright (C) 2001-2018 Free Software Foundation, Inc.
    Contributed by Daniel Berlin <dan@dberlin.org>
 
 This file is part of GCC.
@@ -226,7 +226,10 @@
   /* If BEST_BB is at the same nesting level, then require it to have
      significantly lower execution frequency to avoid gratutious movement.  */
   if (bb_loop_depth (best_bb) == bb_loop_depth (early_bb)
-      && best_bb->frequency < (early_bb->frequency * threshold / 100.0))
+      /* If result of comparsion is unknown, preffer EARLY_BB.
+	 Thus use !(...>=..) rather than (...<...)  */
+      && !(best_bb->count.apply_scale (100, 1)
+	   > (early_bb->count.apply_scale (threshold, 1))))
     return best_bb;
 
   /* No better block found, so return EARLY_BB, which happens to be the