[WebAssembly] Initial WebAssembly backend

This WebAssembly backend is just a skeleton at this time and is not yet
functional.

llvm-svn: 241022

1 files changed, 35 insertions, 0 deletions

diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyRegisterInfo.h b/llvm/lib/Target/WebAssembly/WebAssemblyRegisterInfo.h
new file mode 100644
index 00000000000..55300287a51
--- /dev/null
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyRegisterInfo.h
@@ -0,0 +1,35 @@
+// WebAssemblyRegisterInfo.h - WebAssembly Register Information Impl -*- C++ -*-
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief This file contains the WebAssembly implementation of the
+/// WebAssemblyRegisterInfo class.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYREGISTERINFO_H
+#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYREGISTERINFO_H
+
+namespace llvm {
+
+class MachineFunction;
+class RegScavenger;
+class TargetRegisterClass;
+class Triple;
+
+class WebAssemblyRegisterInfo final {
+  const Triple &TT;
+
+public:
+  explicit WebAssemblyRegisterInfo(const Triple &TT);
+};
+
+} // end namespace llvm
+
+#endif