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| 1 //===- NaClBitcodeDecoders.cpp --------------------------------------------===// |
| 2 // Internal implementation of decoder functions for PNaCl Bitcode files. |
| 3 // |
| 4 // The LLVM Compiler Infrastructure |
| 5 // |
| 6 // This file is distributed under the University of Illinois Open Source |
| 7 // License. See LICENSE.TXT for details. |
| 8 // |
| 9 //===----------------------------------------------------------------------===// |
| 10 |
| 11 #include "llvm/Bitcode/NaCl/NaClBitcodeDecoders.h" |
| 12 |
| 13 namespace llvm { |
| 14 namespace naclbitc { |
| 15 |
| 16 bool DecodeCastOpcode(uint64_t NaClOpcode, |
| 17 Instruction::CastOps &LLVMOpcode) { |
| 18 switch (NaClOpcode) { |
| 19 default: |
| 20 LLVMOpcode = Instruction::BitCast; |
| 21 return false; |
| 22 case naclbitc::CAST_TRUNC: |
| 23 LLVMOpcode = Instruction::Trunc; |
| 24 return true; |
| 25 case naclbitc::CAST_ZEXT: |
| 26 LLVMOpcode = Instruction::ZExt; |
| 27 return true; |
| 28 case naclbitc::CAST_SEXT: |
| 29 LLVMOpcode = Instruction::SExt; |
| 30 return true; |
| 31 case naclbitc::CAST_FPTOUI: |
| 32 LLVMOpcode = Instruction::FPToUI; |
| 33 return true; |
| 34 case naclbitc::CAST_FPTOSI: |
| 35 LLVMOpcode = Instruction::FPToSI; |
| 36 return true; |
| 37 case naclbitc::CAST_UITOFP: |
| 38 LLVMOpcode = Instruction::UIToFP; |
| 39 return true; |
| 40 case naclbitc::CAST_SITOFP: |
| 41 LLVMOpcode = Instruction::SIToFP; |
| 42 return true; |
| 43 case naclbitc::CAST_FPTRUNC: |
| 44 LLVMOpcode = Instruction::FPTrunc; |
| 45 return true; |
| 46 case naclbitc::CAST_FPEXT: |
| 47 LLVMOpcode = Instruction::FPExt; |
| 48 return true; |
| 49 case naclbitc::CAST_BITCAST: |
| 50 LLVMOpcode = Instruction::BitCast; |
| 51 return true; |
| 52 } |
| 53 } |
| 54 |
| 55 bool DecodeLinkage(uint64_t NaClLinkage, |
| 56 GlobalValue::LinkageTypes &LLVMLinkage) { |
| 57 switch (NaClLinkage) { |
| 58 default: |
| 59 LLVMLinkage = GlobalValue::InternalLinkage; |
| 60 return false; |
| 61 case naclbitc::LINKAGE_EXTERNAL: |
| 62 LLVMLinkage = GlobalValue::ExternalLinkage; |
| 63 return true; |
| 64 case naclbitc::LINKAGE_INTERNAL: |
| 65 LLVMLinkage = GlobalValue::InternalLinkage; |
| 66 return true; |
| 67 } |
| 68 } |
| 69 |
| 70 bool DecodeBinaryOpcode(uint64_t NaClOpcode, Type *Ty, |
| 71 Instruction::BinaryOps &LLVMOpcode) { |
| 72 switch (NaClOpcode) { |
| 73 default: |
| 74 LLVMOpcode = Instruction::Add; |
| 75 return false; |
| 76 case naclbitc::BINOP_ADD: |
| 77 LLVMOpcode = Ty->isFPOrFPVectorTy() ? Instruction::FAdd : Instruction::Add; |
| 78 return true; |
| 79 case naclbitc::BINOP_SUB: |
| 80 LLVMOpcode = Ty->isFPOrFPVectorTy() ? Instruction::FSub : Instruction::Sub; |
| 81 return true; |
| 82 case naclbitc::BINOP_MUL: |
| 83 LLVMOpcode = Ty->isFPOrFPVectorTy() ? Instruction::FMul : Instruction::Mul; |
| 84 return true; |
| 85 case naclbitc::BINOP_UDIV: |
| 86 LLVMOpcode = Instruction::UDiv; |
| 87 return true; |
| 88 case naclbitc::BINOP_SDIV: |
| 89 LLVMOpcode = Ty->isFPOrFPVectorTy() ? Instruction::FDiv : Instruction::SDiv; |
| 90 return true; |
| 91 case naclbitc::BINOP_UREM: |
| 92 LLVMOpcode = Instruction::URem; |
| 93 return true; |
| 94 case naclbitc::BINOP_SREM: |
| 95 LLVMOpcode = Ty->isFPOrFPVectorTy() ? Instruction::FRem : Instruction::SRem; |
| 96 return true; |
| 97 case naclbitc::BINOP_SHL: |
| 98 LLVMOpcode = Instruction::Shl; |
| 99 return true; |
| 100 case naclbitc::BINOP_LSHR: |
| 101 LLVMOpcode = Instruction::LShr; |
| 102 return true; |
| 103 case naclbitc::BINOP_ASHR: |
| 104 LLVMOpcode = Instruction::AShr; |
| 105 return true; |
| 106 case naclbitc::BINOP_AND: |
| 107 LLVMOpcode = Instruction::And; |
| 108 return true; |
| 109 case naclbitc::BINOP_OR: |
| 110 LLVMOpcode = Instruction::Or; |
| 111 return true; |
| 112 case naclbitc::BINOP_XOR: |
| 113 LLVMOpcode = Instruction::Xor; |
| 114 return true; |
| 115 } |
| 116 } |
| 117 |
| 118 bool DecodeCallingConv(uint64_t NaClCallingConv, |
| 119 CallingConv::ID &LLVMCallingConv) { |
| 120 switch (NaClCallingConv) { |
| 121 default: |
| 122 LLVMCallingConv = CallingConv::C; |
| 123 return false; |
| 124 case naclbitc::C_CallingConv: |
| 125 LLVMCallingConv = CallingConv::C; |
| 126 return true; |
| 127 } |
| 128 } |
| 129 |
| 130 bool DecodeFcmpPredicate(uint64_t NaClPredicate, |
| 131 CmpInst::Predicate &LLVMPredicate) { |
| 132 switch (NaClPredicate) { |
| 133 default: |
| 134 LLVMPredicate = CmpInst::FCMP_FALSE; |
| 135 return false; |
| 136 case naclbitc::FCMP_FALSE: |
| 137 LLVMPredicate = CmpInst::FCMP_FALSE; |
| 138 return true; |
| 139 case naclbitc::FCMP_OEQ: |
| 140 LLVMPredicate = CmpInst::FCMP_OEQ; |
| 141 return true; |
| 142 case naclbitc::FCMP_OGT: |
| 143 LLVMPredicate = CmpInst::FCMP_OGT; |
| 144 return true; |
| 145 case naclbitc::FCMP_OGE: |
| 146 LLVMPredicate = CmpInst::FCMP_OGE; |
| 147 return true; |
| 148 case naclbitc::FCMP_OLT: |
| 149 LLVMPredicate = CmpInst::FCMP_OLT; |
| 150 return true; |
| 151 case naclbitc::FCMP_OLE: |
| 152 LLVMPredicate = CmpInst::FCMP_OLE; |
| 153 return true; |
| 154 case naclbitc::FCMP_ONE: |
| 155 LLVMPredicate = CmpInst::FCMP_ONE; |
| 156 return true; |
| 157 case naclbitc::FCMP_ORD: |
| 158 LLVMPredicate = CmpInst::FCMP_ORD; |
| 159 return true; |
| 160 case naclbitc::FCMP_UNO: |
| 161 LLVMPredicate = CmpInst::FCMP_UNO; |
| 162 return true; |
| 163 case naclbitc::FCMP_UEQ: |
| 164 LLVMPredicate = CmpInst::FCMP_UEQ; |
| 165 return true; |
| 166 case naclbitc::FCMP_UGT: |
| 167 LLVMPredicate = CmpInst::FCMP_UGT; |
| 168 return true; |
| 169 case naclbitc::FCMP_UGE: |
| 170 LLVMPredicate = CmpInst::FCMP_UGE; |
| 171 return true; |
| 172 case naclbitc::FCMP_ULT: |
| 173 LLVMPredicate = CmpInst::FCMP_ULT; |
| 174 return true; |
| 175 case naclbitc::FCMP_ULE: |
| 176 LLVMPredicate = CmpInst::FCMP_ULE; |
| 177 return true; |
| 178 case naclbitc::FCMP_UNE: |
| 179 LLVMPredicate = CmpInst::FCMP_UNE; |
| 180 return true; |
| 181 case naclbitc::FCMP_TRUE: |
| 182 LLVMPredicate = CmpInst::FCMP_TRUE; |
| 183 return true; |
| 184 } |
| 185 } |
| 186 |
| 187 bool DecodeIcmpPredicate(uint64_t NaClPredicate, |
| 188 CmpInst::Predicate &LLVMPredicate) { |
| 189 switch (NaClPredicate) { |
| 190 default: |
| 191 LLVMPredicate = CmpInst::ICMP_EQ; |
| 192 return false; |
| 193 case naclbitc::ICMP_EQ: |
| 194 LLVMPredicate = CmpInst::ICMP_EQ; |
| 195 return true; |
| 196 case naclbitc::ICMP_NE: |
| 197 LLVMPredicate = CmpInst::ICMP_NE; |
| 198 return true; |
| 199 case naclbitc::ICMP_UGT: |
| 200 LLVMPredicate = CmpInst::ICMP_UGT; |
| 201 return true; |
| 202 case naclbitc::ICMP_UGE: |
| 203 LLVMPredicate = CmpInst::ICMP_UGE; |
| 204 return true; |
| 205 case naclbitc::ICMP_ULT: |
| 206 LLVMPredicate = CmpInst::ICMP_ULT; |
| 207 return true; |
| 208 case naclbitc::ICMP_ULE: |
| 209 LLVMPredicate = CmpInst::ICMP_ULE; |
| 210 return true; |
| 211 case naclbitc::ICMP_SGT: |
| 212 LLVMPredicate = CmpInst::ICMP_SGT; |
| 213 return true; |
| 214 case naclbitc::ICMP_SGE: |
| 215 LLVMPredicate = CmpInst::ICMP_SGE; |
| 216 return true; |
| 217 case naclbitc::ICMP_SLT: |
| 218 LLVMPredicate = CmpInst::ICMP_SLT; |
| 219 return true; |
| 220 case naclbitc::ICMP_SLE: |
| 221 LLVMPredicate = CmpInst::ICMP_SLE; |
| 222 return true; |
| 223 } |
| 224 } |
| 225 |
| 226 |
| 227 } |
| 228 } |
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