lib/Target/MSP430/MSP430ISelLowering.cpp

   1 //===-- MSP430ISelLowering.cpp - MSP430 DAG Lowering Implementation  ------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file implements the MSP430TargetLowering class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #define DEBUG_TYPE "msp430-lower"
  15
  16 #include "MSP430ISelLowering.h"
  17 #include "MSP430.h"
  18 #include "MSP430TargetMachine.h"
  19 #include "MSP430Subtarget.h"
  20 #include "llvm/DerivedTypes.h"
  21 #include "llvm/Function.h"
  22 #include "llvm/Intrinsics.h"
  23 #include "llvm/CallingConv.h"
  24 #include "llvm/GlobalVariable.h"
  25 #include "llvm/GlobalAlias.h"
  26 #include "llvm/CodeGen/CallingConvLower.h"
  27 #include "llvm/CodeGen/MachineFrameInfo.h"
  28 #include "llvm/CodeGen/MachineFunction.h"
  29 #include "llvm/CodeGen/MachineInstrBuilder.h"
  30 #include "llvm/CodeGen/MachineRegisterInfo.h"
  31 #include "llvm/CodeGen/SelectionDAGISel.h"
  32 #include "llvm/CodeGen/ValueTypes.h"
  33 #include "llvm/Support/Debug.h"
  34 #include "llvm/ADT/VectorExtras.h"
  35 using namespace llvm;
  36
  37 MSP430TargetLowering::MSP430TargetLowering(MSP430TargetMachine &tm) :
  38   TargetLowering(tm), Subtarget(*tm.getSubtargetImpl()), TM(tm) {
  39
  40   // Set up the register classes.
  41   addRegisterClass(MVT::i16, MSP430::MSP430RegsRegisterClass);
  42
  43   // Compute derived properties from the register classes
  44   computeRegisterProperties();
  45 }
  46
  47 SDValue MSP430TargetLowering::
  48 LowerOperation(SDValue Op, SelectionDAG &DAG) {
  49   switch (Op.getOpcode()) {
  50   default:
  51     assert(0 && "unimplemented operand");
  52     return SDValue();
  53   }
  54 }
  55
  56 #include "MSP430GenCallingConv.inc"