1 files changed, 70 insertions, 0 deletions
diff --git a/lib/Target/SystemZ/SystemZRegisterInfo.h b/lib/Target/SystemZ/SystemZRegisterInfo.h
new file mode 100644
index 0000000000..91a70dea29
--- /dev/null
+++ b/lib/Target/SystemZ/SystemZRegisterInfo.h
@@ -0,0 +1,70 @@
+//===-- SystemZRegisterInfo.h - SystemZ register information ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SystemZREGISTERINFO_H
+#define SystemZREGISTERINFO_H
+
+#include "SystemZ.h"
+#include "llvm/Target/TargetRegisterInfo.h"
+
+#define GET_REGINFO_HEADER
+#include "SystemZGenRegisterInfo.inc"
+
+namespace llvm {
+
+namespace SystemZ {
+  // Return the subreg to use for referring to the even and odd registers
+  // in a GR128 pair.  Is32Bit says whether we want a GR32 or GR64.
+  inline unsigned even128(bool Is32bit) {
+    return Is32bit ? subreg_32bit : subreg_high;
+  }
+  inline unsigned odd128(bool Is32bit) {
+    return Is32bit ? subreg_low32 : subreg_low;
+  }
+}
+
+class SystemZSubtarget;
+class SystemZInstrInfo;
+
+struct SystemZRegisterInfo : public SystemZGenRegisterInfo {
+private:
+  SystemZTargetMachine &TM;
+  const SystemZInstrInfo &TII;
+
+public:
+  SystemZRegisterInfo(SystemZTargetMachine &tm, const SystemZInstrInfo &tii);
+
+  // Override TargetRegisterInfo.h.
+  virtual bool requiresRegisterScavenging(const MachineFunction &MF) const
+    LLVM_OVERRIDE {
+    return true;
+  }
+  virtual bool requiresFrameIndexScavenging(const MachineFunction &MF) const
+    LLVM_OVERRIDE {
+    return true;
+  }
+  virtual const uint16_t *getCalleeSavedRegs(const MachineFunction *MF = 0)
+    const LLVM_OVERRIDE;
+  virtual BitVector getReservedRegs(const MachineFunction &MF)
+    const LLVM_OVERRIDE;
+  virtual bool saveScavengerRegister(MachineBasicBlock &MBB,
+                                     MachineBasicBlock::iterator SaveMBBI,
+                                     MachineBasicBlock::iterator &UseMBBI,
+                                     const TargetRegisterClass *RC,
+                                     unsigned Reg) const LLVM_OVERRIDE;
+  virtual void eliminateFrameIndex(MachineBasicBlock::iterator MI,
+                                   int SPAdj, unsigned FIOperandNum,
+                                   RegScavenger *RS) const LLVM_OVERRIDE;
+  virtual unsigned getFrameRegister(const MachineFunction &MF) const
+    LLVM_OVERRIDE;
+};
+
+} // end namespace llvm
+
+#endif