match.pd ((T)(T2)x -> (T)x): Remove restriction on final precision not matching mode...

2016-07-29  Richard Biener  <rguenther@suse.de>

	* match.pd ((T)(T2)x -> (T)x): Remove restriction on final
	precision not matching mode precision.

From-SVN: r237838

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e37b77c..109ff1c 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2016-07-29  Richard Biener  <rguenther@suse.de>
+
+       * match.pd ((T)(T2)x -> (T)x): Remove restriction on final
+       precision not matching mode precision.
+
 2016-06-28  John David Anglin  <danglin@gcc.gnu.org>
 
        * config/pa/pa.md (call_symref_64bit_post_reload): Don't call

diff --git a/gcc/match.pd b/gcc/match.pd
index 980b73b..b24bfb4 100644 (file)
--- a/gcc/match.pd
+++ b/gcc/match.pd
@@ -1652,14 +1652,11 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
        float or both integer, we don't need the middle conversion if the
        former is wider than the latter and doesn't change the signedness
        (for integers).  Avoid this if the final type is a pointer since
-       then we sometimes need the middle conversion.  Likewise if the
-       final type has a precision not equal to the size of its mode.  */
+       then we sometimes need the middle conversion.  */
     (if (((inter_int && inside_int) || (inter_float && inside_float))
         && (final_int || final_float)
         && inter_prec >= inside_prec
-        && (inter_float || inter_unsignedp == inside_unsignedp)
-        && ! (final_prec != GET_MODE_PRECISION (TYPE_MODE (type))
-              && TYPE_MODE (type) == TYPE_MODE (inter_type)))
+        && (inter_float || inter_unsignedp == inside_unsignedp))
      (ocvt @0))
 
     /* If we have a sign-extension of a zero-extended value, we can
@@ -1692,9 +1689,7 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
         && ((inter_unsignedp && inter_prec > inside_prec)
             == (final_unsignedp && final_prec > inter_prec))
         && ! (inside_ptr && inter_prec != final_prec)
-        && ! (final_ptr && inside_prec != inter_prec)
-        && ! (final_prec != GET_MODE_PRECISION (TYPE_MODE (type))
-              && TYPE_MODE (type) == TYPE_MODE (inter_type)))
+        && ! (final_ptr && inside_prec != inter_prec))
      (ocvt @0))
 
     /* A truncation to an unsigned type (a zero-extension) should be