[binutils-gdb] aarch64 doc: Fix description of .unreq directive.

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7a19901035ee1320e74676cd587b741b1d75e8bc

commit 7a19901035ee1320e74676cd587b741b1d75e8bc
Author: Alice Carlotti <[email protected]>
Date:   Wed Feb 18 17:51:47 2026 +0000

    aarch64 doc: Fix description of .unreq directive.

Diff:
---
 gas/doc/c-aarch64.texi | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/gas/doc/c-aarch64.texi b/gas/doc/c-aarch64.texi
index 4ac0ae6dae1..62744d36aa2 100644
--- a/gas/doc/c-aarch64.texi
+++ b/gas/doc/c-aarch64.texi
@@ -692,9 +692,10 @@ This undefines a register alias which was previously defined using the
         .unreq foo
 @end smallexample
 
-An error occurs if the name is undefined.  Note - this pseudo op can
-be used to delete builtin in register name aliases (eg 'w0').  This
-should only be done if it is really necessary.
+An error occurs if the name was not defined.  This directive can be used to
+undefine the built-in register aliases @code{ip0}, @code{ip1}, @code{lr} and
+@code{fp}, but this should only be done if it is really necessary.  Other
+built-in register names cannot be undefined.
 
 @c VVVVVVVVVVVVVVVVVVVVVVVVVV