Merge in trunk.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/wide-int@209755 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 15 insertions, 0 deletions

diff --git a/gcc/loop-iv.c b/gcc/loop-iv.c
index 906c71d84fa..796bd59f2d6 100644
--- a/gcc/loop-iv.c
+++ b/gcc/loop-iv.c
@@ -1732,6 +1732,21 @@ canon_condition (rtx cond)
   return cond;
 }
 
+/* Reverses CONDition; returns NULL if we cannot.  */
+
+static rtx
+reversed_condition (rtx cond)
+{
+  enum rtx_code reversed;
+  reversed = reversed_comparison_code (cond, NULL);
+  if (reversed == UNKNOWN)
+    return NULL_RTX;
+  else
+    return gen_rtx_fmt_ee (reversed,
+			   GET_MODE (cond), XEXP (cond, 0),
+			   XEXP (cond, 1));
+}
+
 /* Tries to use the fact that COND holds to simplify EXPR.  ALTERED is the
    set of altered regs.  */