1 //===-- PTXBaseInfo.h - Top level definitions for PTX -------- --*- 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 contains small standalone helper functions and enum definitions for 11 // the PTX target useful for the compiler back-end and the MC libraries. 12 // As such, it deliberately does not include references to LLVM core 13 // code gen types, passes, etc.. 14 // 15 //===----------------------------------------------------------------------===// 16 17 #ifndef PTXBASEINFO_H 18 #define PTXBASEINFO_H 19 20 #include "PTXMCTargetDesc.h" 21 #include "llvm/Support/ErrorHandling.h" 22 #include "llvm/Support/raw_ostream.h" 23 24 namespace llvm { 25 namespace PTXStateSpace { 26 enum { 27 Global = 0, // default to global state space 28 Constant = 1, 29 Local = 2, 30 Parameter = 3, 31 Shared = 4 32 }; 33 } // namespace PTXStateSpace 34 35 namespace PTXPredicate { 36 enum { 37 Normal = 0, 38 Negate = 1, 39 None = 2 40 }; 41 } // namespace PTXPredicate 42 43 /// Namespace to hold all target-specific flags. 44 namespace PTXRoundingMode { 45 // Instruction Flags 46 enum { 47 // Rounding Mode Flags 48 RndMask = 15, 49 RndDefault = 0, // --- 50 RndNone = 1, // <NONE> 51 RndNearestEven = 2, // .rn 52 RndTowardsZero = 3, // .rz 53 RndNegInf = 4, // .rm 54 RndPosInf = 5, // .rp 55 RndApprox = 6, // .approx 56 RndNearestEvenInt = 7, // .rni 57 RndTowardsZeroInt = 8, // .rzi 58 RndNegInfInt = 9, // .rmi 59 RndPosInfInt = 10 // .rpi 60 }; 61 } // namespace PTXII 62 63 namespace PTXRegisterType { 64 // Register type encoded in MCOperands 65 enum { 66 Pred = 0, 67 B16, 68 B32, 69 B64, 70 F32, 71 F64 72 }; 73 } // namespace PTXRegisterType 74 75 namespace PTXRegisterSpace { 76 // Register space encoded in MCOperands 77 enum { 78 Reg = 0, 79 Local, 80 Param, 81 Argument, 82 Return 83 }; 84 } 85 86 inline static void decodeRegisterName(raw_ostream &OS, 87 unsigned EncodedReg) { 88 OS << "%"; 89 90 unsigned RegSpace = EncodedReg & 0x7; 91 unsigned RegType = (EncodedReg >> 3) & 0x7; 92 unsigned RegOffset = EncodedReg >> 6; 93 94 switch (RegSpace) { 95 default: 96 llvm_unreachable("Unknown register space!"); 97 case PTXRegisterSpace::Reg: 98 switch (RegType) { 99 default: 100 llvm_unreachable("Unknown register type!"); 101 case PTXRegisterType::Pred: 102 OS << "p"; 103 break; 104 case PTXRegisterType::B16: 105 OS << "rh"; 106 break; 107 case PTXRegisterType::B32: 108 OS << "r"; 109 break; 110 case PTXRegisterType::B64: 111 OS << "rd"; 112 break; 113 case PTXRegisterType::F32: 114 OS << "f"; 115 break; 116 case PTXRegisterType::F64: 117 OS << "fd"; 118 break; 119 } 120 break; 121 case PTXRegisterSpace::Return: 122 OS << "ret"; 123 break; 124 case PTXRegisterSpace::Argument: 125 OS << "arg"; 126 break; 127 } 128 129 OS << RegOffset; 130 } 131 } // namespace llvm 132 133 #endif 134 135
