[PATCH 1/2]AArch64 docs: add itemx for outline-atomics docs

[Tamar Christina]

The documentation for outline atomics is missing the entry for
-mno-outline-atomics which this patch adds.

Bootstrapped Regtested on aarch64-none-linux-gnu and no issues.

Ok for master?

Thanks,
Tamar

gcc/ChangeLog:

        * doc/extend.texi (outline-atomics): Document the inverse -mno flag.

---
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 
429cbeb8a3c8186af60b1441acb52bc052b60721..88bbb529d99c076d3eea39f5201d5c8235b6eb1b
 100644
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -3878,6 +3878,7 @@ behavior and permissible arguments are the same as for 
the command-line option
 
 @cindex @code{outline-atomics} function attribute, AArch64
 @item outline-atomics
+@itemx no-outline-atomics
 Enable or disable calls to out-of-line helpers to implement atomic operations.
 This corresponds to the behavior of the command-line options
 @option{-moutline-atomics} and @option{-mno-outline-atomics}.


-- 

diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 429cbeb8a3c8186af60b1441acb52bc052b60721..88bbb529d99c076d3eea39f5201d5c8235b6eb1b 100644
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -3878,6 +3878,7 @@ behavior and permissible arguments are the same as for the command-line option
 
 @cindex @code{outline-atomics} function attribute, AArch64
 @item outline-atomics
+@itemx no-outline-atomics
 Enable or disable calls to out-of-line helpers to implement atomic operations.
 This corresponds to the behavior of the command-line options
 @option{-moutline-atomics} and @option{-mno-outline-atomics}.