From: Alan Modra <amodra@gcc.gnu.org>
Date: Tue, 10 Sep 2013 08:38:57 +0000 (+0930)
Subject: re PR target/58330 (powerpc64 atomic store split in two)
X-Git-Tag: releases/gcc-4.9.0~4174
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=7dbdaf87da09ca1b3ff501d0a89ea28463b541bb;p=thirdparty%2Fgcc.git

re PR target/58330 (powerpc64 atomic store split in two)

PR target/58330
oops, missed from commit

From-SVN: r202428
---

diff --git a/gcc/testsuite/gcc.target/powerpc/pr58330.c b/gcc/testsuite/gcc.target/powerpc/pr58330.c
new file mode 100644
index 000000000000..76983dd55ab6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/pr58330.c
@@ -0,0 +1,11 @@
+/* { dg-do compile { target { powerpc*-*-* } } } */
+/* { dg-require-effective-target lp64 } */
+/* { dg-options "-O -mno-popcntb" } */
+/* { dg-final { scan-assembler-not "stwbrx" } } */
+
+void
+write_reverse (unsigned long *addr, unsigned long val)
+{
+  unsigned long reverse = __builtin_bswap64 (val);
+  __atomic_store_n (addr, reverse, __ATOMIC_RELAXED);
+}