[gcc(refs/vendors/ARM/heads/morello)] morello: Don't treat TYPE_P nodes as capability values

[Matthew Malcomson]

https://gcc.gnu.org/g:473121a7071e99c7953002b8e0103688bd1ba3a3

commit 473121a7071e99c7953002b8e0103688bd1ba3a3
Author: Alex Coplan <alex.coplan@arm.com>
Date:   Fri Feb 11 14:23:46 2022 +0000

    morello: Don't treat TYPE_P nodes as capability values
    
    Return false in tree_is_capability_value for TYPE_P tree nodes: these
    are not capability *values*. The C++ frontend often ends up with types
    where we expect a value when doing template substitution, we don't want
    to treat these as capability values.
    
    gcc/ChangeLog:
    
            * tree.h (tree_is_capability_value): Return false if argument is
            TYPE_P.

Diff:
---
 gcc/tree.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gcc/tree.h b/gcc/tree.h
index c2fbd1eccdf..674eb1acf64 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -6366,7 +6366,10 @@ fndecl_built_in_p (const_tree node, built_in_function name)
 static inline bool
 tree_is_capability_value (const_tree t)
 {
-  return t && t != error_mark_node && capability_type_p (TREE_TYPE (t));
+  return t
+    && t != error_mark_node
+    && !TYPE_P (t)
+    && capability_type_p (TREE_TYPE (t));
 }
 
 inline wide_int