Vendor import of llvm trunk r126079:vendor/llvm/llvm-r126079

http://llvm.org/svn/llvm-project/llvm/trunk@126079

1 files changed, 53 insertions, 0 deletions

diff --git a/lib/Target/MSP430/MSP430FrameLowering.h b/lib/Target/MSP430/MSP430FrameLowering.h
new file mode 100644
index 000000000000..b636827da7b0
--- /dev/null
+++ b/lib/Target/MSP430/MSP430FrameLowering.h
@@ -0,0 +1,53 @@
+//==- MSP430FrameLowering.h - Define frame lowering for MSP430 --*- C++ -*--==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef MSP430_FRAMEINFO_H
+#define MSP430_FRAMEINFO_H
+
+#include "MSP430.h"
+#include "MSP430Subtarget.h"
+#include "llvm/Target/TargetFrameLowering.h"
+
+namespace llvm {
+  class MSP430Subtarget;
+
+class MSP430FrameLowering : public TargetFrameLowering {
+protected:
+  const MSP430Subtarget &STI;
+
+public:
+  explicit MSP430FrameLowering(const MSP430Subtarget &sti)
+    : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 2, -2), STI(sti) {
+  }
+
+  /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
+  /// the function.
+  void emitPrologue(MachineFunction &MF) const;
+  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
+
+  bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
+                                 MachineBasicBlock::iterator MI,
+                                 const std::vector<CalleeSavedInfo> &CSI,
+                                 const TargetRegisterInfo *TRI) const;
+  bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
+                                   MachineBasicBlock::iterator MI,
+                                   const std::vector<CalleeSavedInfo> &CSI,
+                                   const TargetRegisterInfo *TRI) const;
+
+  bool hasFP(const MachineFunction &MF) const;
+  bool hasReservedCallFrame(const MachineFunction &MF) const;
+};
+
+} // End llvm namespace
+
+#endif