[AVR] Add a majority of the backend code

Summary: This adds the majority of the AVR backend.

Reviewers: hfinkel, dsanders, vkalintiris, arsenm

Subscribers: dylanmckay

Differential Revision: http://reviews.llvm.org/D17906

llvm-svn: 268722

1 files changed, 56 insertions, 0 deletions

diff --git a/llvm/lib/Target/AVR/AVRTargetMachine.h b/llvm/lib/Target/AVR/AVRTargetMachine.h
new file mode 100644
index 00000000000..d03a5c542bb
--- /dev/null
+++ b/llvm/lib/Target/AVR/AVRTargetMachine.h
@@ -0,0 +1,56 @@
+//===-- AVRTargetMachine.h - Define TargetMachine for AVR -------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the AVR specific subclass of TargetMachine.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_AVR_TARGET_MACHINE_H
+#define LLVM_AVR_TARGET_MACHINE_H
+
+#include "AVRConfig.h"
+
+#include "llvm/IR/DataLayout.h"
+#include "llvm/Target/TargetMachine.h"
+
+#include "AVRFrameLowering.h"
+#include "AVRISelLowering.h"
+#include "AVRInstrInfo.h"
+#include "AVRSelectionDAGInfo.h"
+#include "AVRSubtarget.h"
+
+namespace llvm {
+
+/**
+ * A generic AVR implementation.
+ */
+class AVRTargetMachine : public LLVMTargetMachine {
+public:
+  AVRTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
+                   StringRef FS, const TargetOptions &Options, Reloc::Model RM,
+                   CodeModel::Model CM, CodeGenOpt::Level OL);
+
+  const AVRSubtarget *getSubtargetImpl() const;
+  const AVRSubtarget *getSubtargetImpl(const Function &) const override;
+
+  TargetLoweringObjectFile *getObjFileLowering() const override {
+    return this->TLOF.get();
+  }
+
+  // Pass Pipeline Configuration.
+  TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
+
+private:
+  std::unique_ptr<TargetLoweringObjectFile> TLOF;
+  AVRSubtarget SubTarget;
+};
+
+} // end namespace llvm
+
+#endif // LLVM_AVR_TARGET_MACHINE_H