FreeBSD driver / Xray flags moving pthread to compile flags.

Summary:
- Using -lpthread instead, with -pthread the linkage does not work.
-Warning about the -fxray-instrument usage outside of the working cases.

Patch by: David CARLIER

Reviewers: krytarowski, vitalybuka, dberris, emaste

Reviewed By: krytarowski, emaste

Subscribers: srhines, emaste, cfe-commits

Differential Revision: https://reviews.llvm.org/D43378

llvm-svn: 325746
diff --git a/clang/test/Driver/XRay/lit.local.cfg b/clang/test/Driver/XRay/lit.local.cfg
index 7cc6c70..41bd413 100644
--- a/clang/test/Driver/XRay/lit.local.cfg
+++ b/clang/test/Driver/XRay/lit.local.cfg
@@ -1,15 +1,16 @@
+import platform
 target_triple_components = config.target_triple.split('-')
 config.available_features.update(target_triple_components)
 
 # Only run the tests in platforms where XRay instrumentation is supported.
 supported_targets = [
-    'x86_64', 'x86_64h', 'arm', 'aarch64', 'arm64', 'powerpc64le', 'mips',
+    'amd64', 'x86_64', 'x86_64h', 'arm', 'aarch64', 'arm64', 'powerpc64le', 'mips',
     'mipsel', 'mips64', 'mips64el'
 ]
 
 # Only on platforms we support.
 supported_oses = [
-    'linux'
+    'Linux', 'FreeBSD'
 ]
 
 triple_set = set(target_triple_components)
@@ -17,7 +18,7 @@
   config.unsupported = True
 
 # Do not run for 'android' despite being linux.
-if len(triple_set.intersection(supported_oses)) == 0 or 'android' in triple_set:
+if platform.system() not in supported_oses or 'android' in triple_set:
   config.unsupported = True
 
 if config.enable_shared:
diff --git a/clang/test/Driver/XRay/xray-instrument-os.c b/clang/test/Driver/XRay/xray-instrument-os.c
index 86b109b..9de4ec7 100644
--- a/clang/test/Driver/XRay/xray-instrument-os.c
+++ b/clang/test/Driver/XRay/xray-instrument-os.c
@@ -1,4 +1,4 @@
 // RUN: not %clang -o /dev/null -v -fxray-instrument -c %s
-// XFAIL: -linux-
+// REQUIRES: linux
 // REQUIRES-ANY: amd64, x86_64, x86_64h, arm, aarch64, arm64
 typedef int a;
diff --git a/clang/test/Driver/XRay/xray-shared-noxray.cpp b/clang/test/Driver/XRay/xray-shared-noxray.cpp
index c279f93..a03345f 100644
--- a/clang/test/Driver/XRay/xray-shared-noxray.cpp
+++ b/clang/test/Driver/XRay/xray-shared-noxray.cpp
@@ -8,7 +8,7 @@
 // SHARED-NOT: {{clang_rt\.xray-}}
 // STATIC: {{clang_rt\.xray-}}
 //
-// REQUIRES: linux, enable_shared
+// REQUIRES: enable_shared
 int foo() { return 42; }
 
 #ifdef MAIN