Add SwiftShader source to repo

Oct 6 code drop from Transgaming
Review URL: https://chromereviews.googleplex.com/3846015
diff --git a/src/LLVM/lib/Target/PowerPC/PPCSelectionDAGInfo.h b/src/LLVM/lib/Target/PowerPC/PPCSelectionDAGInfo.h
new file mode 100644
index 0000000..341b69c
--- /dev/null
+++ b/src/LLVM/lib/Target/PowerPC/PPCSelectionDAGInfo.h
@@ -0,0 +1,31 @@
+//===-- PPCSelectionDAGInfo.h - PowerPC SelectionDAG Info -------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the PowerPC subclass for TargetSelectionDAGInfo.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef POWERPCCSELECTIONDAGINFO_H
+#define POWERPCCSELECTIONDAGINFO_H
+
+#include "llvm/Target/TargetSelectionDAGInfo.h"
+
+namespace llvm {
+
+class PPCTargetMachine;
+
+class PPCSelectionDAGInfo : public TargetSelectionDAGInfo {
+public:
+  explicit PPCSelectionDAGInfo(const PPCTargetMachine &TM);
+  ~PPCSelectionDAGInfo();
+};
+
+}
+
+#endif