[PATCH] range-op-float: Use get_nan_state in float_widen_lhs_range

[Jakub Jelinek <jakub@redhat.com>]

Hi!

On Wed, Mar 22, 2023 at 07:32:44AM +0100, Aldy Hernandez wrote:
> 	* value-range.cc (frange::set): Add nan_state argument.
> 	* value-range.h (class nan_state): New.
> 	(frange::get_nan_state): New.

The following patch makes use of those changes in float_widen_lhs_range.

Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?

2023-03-28  Jakub Jelinek  <jakub@redhat.com>

	* range-op-float.cc (float_widen_lhs_range): Use pass get_nan_state
	as 4th argument to set to avoid clear_nan and union_ calls.

--- gcc/range-op-float.cc.jj	2023-03-23 15:25:47.119740274 +0100
+++ gcc/range-op-float.cc	2023-03-27 13:28:18.847264635 +0200
@@ -2262,12 +2262,7 @@ float_widen_lhs_range (tree type, const
      or real_max_representable (type) as upper bound.  */
   bool save_flag_finite_math_only = flag_finite_math_only;
   flag_finite_math_only = false;
-  ret.set (type, lb, ub);
-  if (lhs.kind () != VR_VARYING)
-    {
-      ret.clear_nan ();
-      ret.union_ (lhs);
-    }
+  ret.set (type, lb, ub, lhs.get_nan_state ());
   flag_finite_math_only = save_flag_finite_math_only;
   return ret;
 }


	Jakub