[gcc r14-12246] aarch64: Accept hyphenated extensions in --with-arch [PR123460]

[Alice Carlotti]

https://gcc.gnu.org/g:c8d48e21442febd5a3ebb8d78b83d1383e3daa8e

commit r14-12246-gc8d48e21442febd5a3ebb8d78b83d1383e3daa8e
Author: Alice Carlotti <alice.carlotti@arm.com>
Date:   Wed Jan 7 18:55:46 2026 +0000

    aarch64: Accept hyphenated extensions in --with-arch [PR123460]
    
    Add "-" to the list of valid characters in an extension name that is
    used when removing the first extension from an extension string.
    
    gcc/ChangeLog:
    
            PR target/123460
            * config.gcc: Accept hyphens in aarch64 --with-arch extensions.

Diff:
---
 gcc/config.gcc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index a3566f5c77da..c267148bb211 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -4277,7 +4277,7 @@ case "${target}" in
 				  echo "Unknown extension used in --with-$which=$val" 1>&2
 				  exit 1
 				fi
-				ext_val=`echo $ext_val | sed -E -e 's/[a-z0-9]+//'`
+				ext_val=`echo $ext_val | sed -E -e 's/[a-z0-9-]+//'`
 			  done
 
 			  true