First step of huge frame-related refactoring: move emit{Prologue,Epilogue} out of TargetRegisterInfo to TargetFrameInfo, which is definitely much better suitable place

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119097 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsFrameInfo.h b/lib/Target/Mips/MipsFrameInfo.h
new file mode 100644
index 0000000..971e653
--- /dev/null
+++ b/lib/Target/Mips/MipsFrameInfo.h
@@ -0,0 +1,44 @@
+//====--- MipsFrameInfo.h - Define TargetFrameInfo for Mips --*- C++ -*---====//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ALPHA_FRAMEINFO_H
+#define ALPHA_FRAMEINFO_H
+
+#include "Mips.h"
+#include "MipsSubtarget.h"
+#include "llvm/Target/TargetFrameInfo.h"
+
+namespace llvm {
+  class MipsSubtarget;
+
+class MipsFrameInfo : public TargetFrameInfo {
+protected:
+  const MipsSubtarget &STI;
+
+public:
+  explicit MipsFrameInfo(const MipsSubtarget &sti)
+    // FIXME: Is this correct at all?
+    : TargetFrameInfo(StackGrowsUp, 8, 0), STI(sti) {
+  }
+
+  void adjustMipsStackFrame(MachineFunction &MF) const;
+
+  /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
+  /// the function.
+  void emitPrologue(MachineFunction &MF) const;
+  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
+};
+
+} // End llvm namespace
+
+#endif