[gcc r12-5646] rs6000: Clarify overloaded builtin diagnostic

[gcc r12-5646] rs6000: Clarify overloaded builtin diagnostic

[William Schmidt]

https://gcc.gnu.org/g:0fc26e6f0b5e5a40f2649e98db605f4c740e2c4e

commit r12-5646-g0fc26e6f0b5e5a40f2649e98db605f4c740e2c4e
Author: Bill Schmidt <wschmidt@linux.ibm.com>
Date:   Tue Nov 23 10:22:58 2021 -0600

    rs6000: Clarify overloaded builtin diagnostic
    
    When a built-in function required by an overloaded function name is not
    currently enabled, the diagnostic message is not as clear as it should be.
    Saying that one built-in "requires" another is somewhat misleading.  It is
    better to explicitly state that the overloaded builtin is implemented by the
    missing builtin.
    
    2021-11-23  Bill Schmidt  <wschmidt@linux.ibm.com>
    
    gcc/
            * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
            Clarify diagnostic.
            (altivec_resolve_new_overloaded_builtin): Likewise.

Diff:
---
 gcc/config/rs6000/rs6000-c.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gcc/config/rs6000/rs6000-c.c b/gcc/config/rs6000/rs6000-c.c
index d08bdfec3ae..5eeac9d4c06 100644
--- a/gcc/config/rs6000/rs6000-c.c
+++ b/gcc/config/rs6000/rs6000-c.c
@@ -1946,7 +1946,8 @@ altivec_resolve_overloaded_builtin (location_t loc, tree fndecl,
 	       non-overloaded function has already been issued.  Add
 	       clarification of the previous message.  */
 	    rich_location richloc (line_table, input_location);
-	    inform (&richloc, "builtin %qs requires builtin %qs",
+	    inform (&richloc,
+		    "overloaded builtin %qs is implemented by builtin %qs",
 		    name, internal_name);
 	  }
 	else
@@ -2992,7 +2993,8 @@ altivec_resolve_new_overloaded_builtin (location_t loc, tree fndecl,
 	       non-overloaded function has already been issued.  Add
 	       clarification of the previous message.  */
 	    rich_location richloc (line_table, input_location);
-	    inform (&richloc, "builtin %qs requires builtin %qs",
+	    inform (&richloc,
+		    "overloaded builtin %qs is implemented by builtin %qs",
 		    name, internal_name);
 	  }
 	else