1 //===-- SparcSubtarget.h - Define Subtarget for the SPARC -------*- 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 the SPARC specific subclass of TargetSubtargetInfo. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef SPARC_SUBTARGET_H 15 #define SPARC_SUBTARGET_H 16 17 #include "llvm/Target/TargetSubtargetInfo.h" 18 #include <string> 19 20 #define GET_SUBTARGETINFO_HEADER 21 #include "SparcGenSubtargetInfo.inc" 22 23 namespace llvm { 24 class StringRef; 25 26 class SparcSubtarget : public SparcGenSubtargetInfo { 27 virtual void anchor(); 28 bool IsV9; 29 bool V8DeprecatedInsts; 30 bool IsVIS; 31 bool Is64Bit; 32 33 public: 34 SparcSubtarget(const std::string &TT, const std::string &CPU, 35 const std::string &FS, bool is64bit); 36 37 bool isV9() const { return IsV9; } 38 bool isVIS() const { return IsVIS; } 39 bool useDeprecatedV8Instructions() const { return V8DeprecatedInsts; } 40 41 /// ParseSubtargetFeatures - Parses features string setting specified 42 /// subtarget options. Definition of function is auto generated by tblgen. 43 void ParseSubtargetFeatures(StringRef CPU, StringRef FS); 44 45 bool is64Bit() const { return Is64Bit; } 46 std::string getDataLayout() const { 47 const char *p; 48 if (is64Bit()) { 49 p = "E-p:64:64:64-i64:64:64-f64:64:64-f128:128:128-n32:64"; 50 } else { 51 p = "E-p:32:32:32-i64:64:64-f64:64:64-f128:64:64-n32"; 52 } 53 return std::string(p); 54 } 55 56 /// The 64-bit ABI uses biased stack and frame pointers, so the stack frame 57 /// of the current function is the area from [%sp+BIAS] to [%fp+BIAS]. 58 int64_t getStackPointerBias() const { 59 return is64Bit() ? 2047 : 0; 60 } 61 62 /// Given a actual stack size as determined by FrameInfo, this function 63 /// returns adjusted framesize which includes space for register window 64 /// spills and arguments. 65 int getAdjustedFrameSize(int stackSize) const; 66 67 }; 68 69 } // end namespace llvm 70 71 #endif 72
