[PUSHED 2/8] Adjust expr_not_equal_to to use irange API.

Aldy Hernandez aldyh@redhat.com
Tue Aug 4 06:34:39 GMT 2020


gcc/ChangeLog:

	* fold-const.c (expr_not_equal_to): Adjust for irange API.
---
 gcc/fold-const.c | 17 ++++-------------
 1 file changed, 4 insertions(+), 13 deletions(-)

diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 1324a194995..5d27927f6bf 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -10194,8 +10194,7 @@ tree_expr_nonzero_p (tree t)
 bool
 expr_not_equal_to (tree t, const wide_int &w)
 {
-  wide_int min, max, nz;
-  value_range_kind rtype;
+  value_range vr;
   switch (TREE_CODE (t))
     {
     case INTEGER_CST:
@@ -10204,17 +10203,9 @@ expr_not_equal_to (tree t, const wide_int &w)
     case SSA_NAME:
       if (!INTEGRAL_TYPE_P (TREE_TYPE (t)))
 	return false;
-      rtype = get_range_info (t, &min, &max);
-      if (rtype == VR_RANGE)
-	{
-	  if (wi::lt_p (max, w, TYPE_SIGN (TREE_TYPE (t))))
-	    return true;
-	  if (wi::lt_p (w, min, TYPE_SIGN (TREE_TYPE (t))))
-	    return true;
-	}
-      else if (rtype == VR_ANTI_RANGE
-	       && wi::le_p (min, w, TYPE_SIGN (TREE_TYPE (t)))
-	       && wi::le_p (w, max, TYPE_SIGN (TREE_TYPE (t))))
+      get_range_info (t, vr);
+      if (!vr.undefined_p ()
+	  && !vr.contains_p (wide_int_to_tree (TREE_TYPE (t), w)))
 	return true;
       /* If T has some known zero bits and W has any of those bits set,
 	 then T is known not to be equal to W.  */
-- 
2.26.2



More information about the Gcc-patches mailing list