From: Andrew MacLeod <amacleod@redhat.com>
Date: Thu, 10 Nov 2011 22:46:25 +0000 (+0000)
Subject: extend.texi: Document __atomic_test_and_set and __atomic_clear.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1aabd05ec017fa10e3a425fff112f81005dd0fe7;p=gcc.git

extend.texi: Document __atomic_test_and_set and __atomic_clear.


2011-11-10  Andrew MacLeod  <amacleod@redhat.com>

	* doc/extend.texi: Document __atomic_test_and_set and __atomic_clear.

From-SVN: r181273
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1f8a56af363..5af6961bd18 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2011-11-10  Andrew MacLeod  <amacleod@redhat.com>
+
+	* doc/extend.texi: Document __atomic_test_and_set and __atomic_clear.
+
 2011-11-10  Andrew MacLeod  <amacleod@redhat.com>
 
 	PR middle-end/51038
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index c7e8ede9cb0..15238c1b39e 100644
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -7002,6 +7002,27 @@ All memory models are valid.
 
 @end deftypefn
 
+@deftypefn {Built-in Function} bool __atomic_test_and_set (bool *ptr, int memmodel)
+
+This built-in function performs an atomic test-and-set operation on
+@code{*@var{ptr}}.  @code{*@var{ptr}} is set to the value 1 and
+the previous contents are returned.
+
+All memory models are valid.
+
+@end deftypefn
+
+@deftypefn {Built-in Function} void __atomic_clear (bool *ptr, int memmodel)
+
+This built-in function performs an atomic clear operation on
+@code{*@var{ptr}}.  After the operation, @code{*@var{ptr}} will contain 0.
+
+The valid memory model variants are
+@code{__ATOMIC_RELAXED}, @code{__ATOMIC_SEQ_CST}, and
+@code{__ATOMIC_RELEASE}.
+
+@end deftypefn
+
 @deftypefn {Built-in Function} void __atomic_thread_fence (int memmodel)
 
 This built-in function acts as a synchronization fence between threads