1 //===- ARCMachineFunctionInfo.h - ARC machine function info -----*- C++ -*-===// 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 declares ARC-specific per-machine-function information. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H 15 #define LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H 16 17 #include "llvm/CodeGen/MachineFunction.h" 18 #include <vector> 19 20 namespace llvm { 21 22 /// ARCFunctionInfo - This class is derived from MachineFunction private 23 /// ARC target-specific information for each MachineFunction. 24 class ARCFunctionInfo : public MachineFunctionInfo { 25 virtual void anchor(); 26 bool ReturnStackOffsetSet; 27 int VarArgsFrameIndex; 28 unsigned ReturnStackOffset; 29 30 public: 31 ARCFunctionInfo() 32 : ReturnStackOffsetSet(false), VarArgsFrameIndex(0), 33 ReturnStackOffset(-1U), MaxCallStackReq(0) {} 34 35 explicit ARCFunctionInfo(MachineFunction &MF) 36 : ReturnStackOffsetSet(false), VarArgsFrameIndex(0), 37 ReturnStackOffset(-1U), MaxCallStackReq(0) { 38 // Functions are 4-byte (2**2) aligned. 39 MF.setAlignment(2); 40 } 41 42 ~ARCFunctionInfo() {} 43 44 void setVarArgsFrameIndex(int off) { VarArgsFrameIndex = off; } 45 int getVarArgsFrameIndex() const { return VarArgsFrameIndex; } 46 47 void setReturnStackOffset(unsigned value) { 48 assert(!ReturnStackOffsetSet && "Return stack offset set twice"); 49 ReturnStackOffset = value; 50 ReturnStackOffsetSet = true; 51 } 52 53 unsigned getReturnStackOffset() const { 54 assert(ReturnStackOffsetSet && "Return stack offset not set"); 55 return ReturnStackOffset; 56 } 57 58 unsigned MaxCallStackReq; 59 }; 60 61 } // end namespace llvm 62 63 #endif // LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H 64
