P4 to Git Change 1132635 by smekhano@stas-rampitec-hsa on 2015/03/19 17:27:36

ECR #333753 - part of the changes to use llvm 3.6
	Testing: smoke, precheckin
	Reviewed by Brian Sumner

Affected files ...

... //depot/stg/opencl/drivers/opencl/compiler/lib/api/v0_8/acl.cpp#27 edit
... //depot/stg/opencl/drivers/opencl/compiler/lib/backends/common/linker.cpp#122 edit
... //depot/stg/opencl/drivers/opencl/compiler/lib/backends/common/sync.cpp#1 add
... //depot/stg/opencl/drivers/opencl/compiler/lib/backends/common/sync.hpp#1 add
... //depot/stg/opencl/drivers/opencl/compiler/lib/backends/common/v0_8/if_acl.cpp#63 edit

rocclr/compiler/lib/backends/common/sync.cpp

@@ -0,0 +1,24 @@
+//
+// Copyright (c) 2008 Advanced Micro Devices, Inc. All rights reserved.
+//
+#include "sync.hpp"
+#include "llvm/Support/Mutex.h"
+#include "llvm/Support/Threading.h"
+
+
+static llvm::sys::MutexImpl mtx;
+
+namespace amdcl
+{
+
+void acquire_global_lock() {
+  if (llvm::llvm_is_multithreaded())
+    mtx.acquire();
+}
+
+void release_global_lock() {
+  if (llvm::llvm_is_multithreaded())
+    mtx.release();
+}
+
+} // namespace amdcl