Create a proper target machine for PNaCl.

lib/Target/PNaCl/PNaClTargetMachine.h

Index: lib/Target/PNaCl/PNaClTargetMachine.h
diff --git a/lib/Target/PNaCl/PNaClTargetMachine.h b/lib/Target/PNaCl/PNaClTargetMachine.h
new file mode 100644
index 0000000000000000000000000000000000000000..b522b156255fd1e85eeebb16a32245663e196d6b
--- /dev/null
+++ b/lib/Target/PNaCl/PNaClTargetMachine.h
@@ -0,0 +1,44 @@
+//===-- llvm/Target/PNaCl/PNaClTargetMachine.h - Target Information -*- 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 TargetMachine class specific to PNaCl.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_PNACL_PNACLTARGETMACHINE_H
+#define LLVM_LIB_TARGET_PNACL_PNACLTARGETMACHINE_H
+
+#include "llvm/IR/DataLayout.h"
+#include "llvm/Target/TargetMachine.h"
+
+namespace llvm {
+
+  class StringRef;
+
+  class PNaClTargetMachine final : public TargetMachine {
+  public:
+    PNaClTargetMachine(const Target& T, StringRef TT,
+                       StringRef CPU, StringRef FS,
+                       const TargetOptions &Options,
+                       Reloc::Model RM,
+                       CodeModel::Model CM,
+                       CodeGenOpt::Level OL);
+    virtual ~PNaClTargetMachine();
+
+    bool addPassesToEmitFile(PassManagerBase &PM,
+                             raw_pwrite_stream &Out,
+                             CodeGenFileType FType,
+                             bool DisableVerify = true,
+                             AnalysisID StartAfter = nullptr,
+                             AnalysisID StopAfter = nullptr) override;
+  private:
+  };
+}
+
+#endif