From 9397683e629c7aebf27dcdeec05c1c7dceb0f129 Mon Sep 17 00:00:00 2001
From: Nadav Rotem <nrotem@apple.com>
Date: Wed, 21 Aug 2013 05:02:12 +0000
Subject: [PATCH] Add the FMA3 feature in order to test FMA encoding using the
 old jit.

Patch by Chris Bieneman!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188865 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/lit.cfg | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/test/lit.cfg b/test/lit.cfg
index cd17be1fdbb..13323b367b7 100644
--- a/test/lit.cfg
+++ b/test/lit.cfg
@@ -291,6 +291,16 @@ if re.search(r'with assertions', llc_cmd.stdout.read().decode('ascii')):
     config.available_features.add('asserts')
 llc_cmd.wait()
 
+if 'darwin' == sys.platform:
+    try:
+        sysctl_cmd = subprocess.Popen(['sysctl', 'hw.optional.fma'],
+                                    stdout = subprocess.PIPE)
+    except OSError:
+        print("Could not exec sysctl")
+    if -1 != sysctl_cmd.stdout.read().find("hw.optional.fma: 1"):
+        config.available_features.add('fma3')
+    sysctl_cmd.wait()
+
 # Check if we should use gmalloc.
 use_gmalloc_str = lit_config.params.get('use_gmalloc', None)
 if use_gmalloc_str is not None: