[gcc(refs/vendors/ARM/heads/morello)] Fix caching name on cheri_capability_pure selector

[Matthew Malcomson <matmal01@gcc.gnu.org>]

https://gcc.gnu.org/g:1fc5b16e1792f871bd694969f4b77b25c50970a9

commit 1fc5b16e1792f871bd694969f4b77b25c50970a9
Author: Matthew Malcomson <matthew.malcomson@arm.com>
Date:   Thu Sep 16 11:34:14 2021 +0100

    Fix caching name on cheri_capability_pure selector
    
    The check_effective_target_cheri_capability_pure procedure uses
    check_no_compiler_messages as many others do.  This procedure takes a
    cache variable name to record whether we are supporting this feature.
    The variable name that cheri_capability_pure used was
    aarch64_capability_any, which meant that if we'd found that any
    capability was available we would assume that pure capability was
    available.
    
    This was a particular problem in the morello.exp testsuite since some
    tests are designed specifically for PureCap while others can be run for
    Fake Cap too.
    
    Here we assign a cache variable specifically for if PureCap is available
    and use that in the relevant procedure.  This fixes the testsuite for
    the new PureCap only tests recently added.

Diff:
---
 gcc/testsuite/lib/target-supports.exp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index f438de2e323..be4f0e6db73 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -3571,7 +3571,7 @@ proc check_effective_target_cheri_capability_pure { } {
   if { ![istarget aarch64*-*-*] } {
       return 0
   }
-  return [check_no_compiler_messages aarch64_capability_any assembly {
+  return [check_no_compiler_messages cheri_capability_pure assembly {
   #if !defined (__CHERI_PURE_CAPABILITY__)
   #error foo
   #endif