1 //===-------- LegalizeFloatTypes.cpp - Legalization of float types --------===// 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 float type expansion and softening for LegalizeTypes. 11 // Softening is the act of turning a computation in an illegal floating point 12 // type into a computation in an integer type of the same size; also known as 13 // "soft float". For example, turning f32 arithmetic into operations using i32. 14 // The resulting integer value is the same as what you would get by performing 15 // the floating point operation and bitcasting the result to the integer type. 16 // Expansion is the act of changing a computation in an illegal type to be a 17 // computation in two identical registers of a smaller type. For example, 18 // implementing ppcf128 arithmetic in two f64 registers. 19 // 20 //===----------------------------------------------------------------------===// 21 22 #include "LegalizeTypes.h" 23 #include "llvm/Support/ErrorHandling.h" 24 #include "llvm/Support/raw_ostream.h" 25 using namespace llvm; 26 27 /// GetFPLibCall - Return the right libcall for the given floating point type. 28 static RTLIB::Libcall GetFPLibCall(EVT VT, 29 RTLIB::Libcall Call_F32, 30 RTLIB::Libcall Call_F64, 31 RTLIB::Libcall Call_F80, 32 RTLIB::Libcall Call_F128, 33 RTLIB::Libcall Call_PPCF128) { 34 return 35 VT == MVT::f32 ? Call_F32 : 36 VT == MVT::f64 ? Call_F64 : 37 VT == MVT::f80 ? Call_F80 : 38 VT == MVT::f128 ? Call_F128 : 39 VT == MVT::ppcf128 ? Call_PPCF128 : 40 RTLIB::UNKNOWN_LIBCALL; 41 } 42 43 //===----------------------------------------------------------------------===// 44 // Result Float to Integer Conversion. 45 //===----------------------------------------------------------------------===// 46 47 void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) { 48 DEBUG(dbgs() << "Soften float result " << ResNo << ": "; N->dump(&DAG); 49 dbgs() << "\n"); 50 SDValue R = SDValue(); 51 52 switch (N->getOpcode()) { 53 default: 54 #ifndef NDEBUG 55 dbgs() << "SoftenFloatResult #" << ResNo << ": "; 56 N->dump(&DAG); dbgs() << "\n"; 57 #endif 58 llvm_unreachable("Do not know how to soften the result of this operator!"); 59 60 case ISD::MERGE_VALUES:R = SoftenFloatRes_MERGE_VALUES(N, ResNo); break; 61 case ISD::BITCAST: R = SoftenFloatRes_BITCAST(N); break; 62 case ISD::BUILD_PAIR: R = SoftenFloatRes_BUILD_PAIR(N); break; 63 case ISD::ConstantFP: 64 R = SoftenFloatRes_ConstantFP(cast<ConstantFPSDNode>(N)); 65 break; 66 case ISD::EXTRACT_VECTOR_ELT: 67 R = SoftenFloatRes_EXTRACT_VECTOR_ELT(N); break; 68 case ISD::FABS: R = SoftenFloatRes_FABS(N); break; 69 case ISD::FADD: R = SoftenFloatRes_FADD(N); break; 70 case ISD::FCEIL: R = SoftenFloatRes_FCEIL(N); break; 71 case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break; 72 case ISD::FCOS: R = SoftenFloatRes_FCOS(N); break; 73 case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break; 74 case ISD::FEXP: R = SoftenFloatRes_FEXP(N); break; 75 case ISD::FEXP2: R = SoftenFloatRes_FEXP2(N); break; 76 case ISD::FFLOOR: R = SoftenFloatRes_FFLOOR(N); break; 77 case ISD::FLOG: R = SoftenFloatRes_FLOG(N); break; 78 case ISD::FLOG2: R = SoftenFloatRes_FLOG2(N); break; 79 case ISD::FLOG10: R = SoftenFloatRes_FLOG10(N); break; 80 case ISD::FMA: R = SoftenFloatRes_FMA(N); break; 81 case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break; 82 case ISD::FNEARBYINT: R = SoftenFloatRes_FNEARBYINT(N); break; 83 case ISD::FNEG: R = SoftenFloatRes_FNEG(N); break; 84 case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break; 85 case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break; 86 case ISD::FP16_TO_FP32:R = SoftenFloatRes_FP16_TO_FP32(N); break; 87 case ISD::FPOW: R = SoftenFloatRes_FPOW(N); break; 88 case ISD::FPOWI: R = SoftenFloatRes_FPOWI(N); break; 89 case ISD::FREM: R = SoftenFloatRes_FREM(N); break; 90 case ISD::FRINT: R = SoftenFloatRes_FRINT(N); break; 91 case ISD::FSIN: R = SoftenFloatRes_FSIN(N); break; 92 case ISD::FSQRT: R = SoftenFloatRes_FSQRT(N); break; 93 case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break; 94 case ISD::FTRUNC: R = SoftenFloatRes_FTRUNC(N); break; 95 case ISD::LOAD: R = SoftenFloatRes_LOAD(N); break; 96 case ISD::SELECT: R = SoftenFloatRes_SELECT(N); break; 97 case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N); break; 98 case ISD::SINT_TO_FP: 99 case ISD::UINT_TO_FP: R = SoftenFloatRes_XINT_TO_FP(N); break; 100 case ISD::UNDEF: R = SoftenFloatRes_UNDEF(N); break; 101 case ISD::VAARG: R = SoftenFloatRes_VAARG(N); break; 102 } 103 104 // If R is null, the sub-method took care of registering the result. 105 if (R.getNode()) 106 SetSoftenedFloat(SDValue(N, ResNo), R); 107 } 108 109 SDValue DAGTypeLegalizer::SoftenFloatRes_BITCAST(SDNode *N) { 110 return BitConvertToInteger(N->getOperand(0)); 111 } 112 113 SDValue DAGTypeLegalizer::SoftenFloatRes_MERGE_VALUES(SDNode *N, 114 unsigned ResNo) { 115 SDValue Op = DisintegrateMERGE_VALUES(N, ResNo); 116 return BitConvertToInteger(Op); 117 } 118 119 SDValue DAGTypeLegalizer::SoftenFloatRes_BUILD_PAIR(SDNode *N) { 120 // Convert the inputs to integers, and build a new pair out of them. 121 return DAG.getNode(ISD::BUILD_PAIR, SDLoc(N), 122 TLI.getTypeToTransformTo(*DAG.getContext(), 123 N->getValueType(0)), 124 BitConvertToInteger(N->getOperand(0)), 125 BitConvertToInteger(N->getOperand(1))); 126 } 127 128 SDValue DAGTypeLegalizer::SoftenFloatRes_ConstantFP(ConstantFPSDNode *N) { 129 return DAG.getConstant(N->getValueAPF().bitcastToAPInt(), 130 TLI.getTypeToTransformTo(*DAG.getContext(), 131 N->getValueType(0))); 132 } 133 134 SDValue DAGTypeLegalizer::SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N) { 135 SDValue NewOp = BitConvertVectorToIntegerVector(N->getOperand(0)); 136 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SDLoc(N), 137 NewOp.getValueType().getVectorElementType(), 138 NewOp, N->getOperand(1)); 139 } 140 141 SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) { 142 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 143 unsigned Size = NVT.getSizeInBits(); 144 145 // Mask = ~(1 << (Size-1)) 146 APInt API = APInt::getAllOnesValue(Size); 147 API.clearBit(Size-1); 148 SDValue Mask = DAG.getConstant(API, NVT); 149 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 150 return DAG.getNode(ISD::AND, SDLoc(N), NVT, Op, Mask); 151 } 152 153 SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) { 154 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 155 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 156 GetSoftenedFloat(N->getOperand(1)) }; 157 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 158 RTLIB::ADD_F32, 159 RTLIB::ADD_F64, 160 RTLIB::ADD_F80, 161 RTLIB::ADD_F128, 162 RTLIB::ADD_PPCF128), 163 NVT, Ops, 2, false, SDLoc(N)); 164 } 165 166 SDValue DAGTypeLegalizer::SoftenFloatRes_FCEIL(SDNode *N) { 167 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 168 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 169 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 170 RTLIB::CEIL_F32, 171 RTLIB::CEIL_F64, 172 RTLIB::CEIL_F80, 173 RTLIB::CEIL_F128, 174 RTLIB::CEIL_PPCF128), 175 NVT, &Op, 1, false, SDLoc(N)); 176 } 177 178 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) { 179 SDValue LHS = GetSoftenedFloat(N->getOperand(0)); 180 SDValue RHS = BitConvertToInteger(N->getOperand(1)); 181 SDLoc dl(N); 182 183 EVT LVT = LHS.getValueType(); 184 EVT RVT = RHS.getValueType(); 185 186 unsigned LSize = LVT.getSizeInBits(); 187 unsigned RSize = RVT.getSizeInBits(); 188 189 // First get the sign bit of second operand. 190 SDValue SignBit = DAG.getNode(ISD::SHL, dl, RVT, DAG.getConstant(1, RVT), 191 DAG.getConstant(RSize - 1, 192 TLI.getShiftAmountTy(RVT))); 193 SignBit = DAG.getNode(ISD::AND, dl, RVT, RHS, SignBit); 194 195 // Shift right or sign-extend it if the two operands have different types. 196 int SizeDiff = RVT.getSizeInBits() - LVT.getSizeInBits(); 197 if (SizeDiff > 0) { 198 SignBit = DAG.getNode(ISD::SRL, dl, RVT, SignBit, 199 DAG.getConstant(SizeDiff, 200 TLI.getShiftAmountTy(SignBit.getValueType()))); 201 SignBit = DAG.getNode(ISD::TRUNCATE, dl, LVT, SignBit); 202 } else if (SizeDiff < 0) { 203 SignBit = DAG.getNode(ISD::ANY_EXTEND, dl, LVT, SignBit); 204 SignBit = DAG.getNode(ISD::SHL, dl, LVT, SignBit, 205 DAG.getConstant(-SizeDiff, 206 TLI.getShiftAmountTy(SignBit.getValueType()))); 207 } 208 209 // Clear the sign bit of the first operand. 210 SDValue Mask = DAG.getNode(ISD::SHL, dl, LVT, DAG.getConstant(1, LVT), 211 DAG.getConstant(LSize - 1, 212 TLI.getShiftAmountTy(LVT))); 213 Mask = DAG.getNode(ISD::SUB, dl, LVT, Mask, DAG.getConstant(1, LVT)); 214 LHS = DAG.getNode(ISD::AND, dl, LVT, LHS, Mask); 215 216 // Or the value with the sign bit. 217 return DAG.getNode(ISD::OR, dl, LVT, LHS, SignBit); 218 } 219 220 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) { 221 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 222 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 223 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 224 RTLIB::COS_F32, 225 RTLIB::COS_F64, 226 RTLIB::COS_F80, 227 RTLIB::COS_F128, 228 RTLIB::COS_PPCF128), 229 NVT, &Op, 1, false, SDLoc(N)); 230 } 231 232 SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) { 233 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 234 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 235 GetSoftenedFloat(N->getOperand(1)) }; 236 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 237 RTLIB::DIV_F32, 238 RTLIB::DIV_F64, 239 RTLIB::DIV_F80, 240 RTLIB::DIV_F128, 241 RTLIB::DIV_PPCF128), 242 NVT, Ops, 2, false, SDLoc(N)); 243 } 244 245 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) { 246 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 247 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 248 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 249 RTLIB::EXP_F32, 250 RTLIB::EXP_F64, 251 RTLIB::EXP_F80, 252 RTLIB::EXP_F128, 253 RTLIB::EXP_PPCF128), 254 NVT, &Op, 1, false, SDLoc(N)); 255 } 256 257 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) { 258 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 259 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 260 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 261 RTLIB::EXP2_F32, 262 RTLIB::EXP2_F64, 263 RTLIB::EXP2_F80, 264 RTLIB::EXP2_F128, 265 RTLIB::EXP2_PPCF128), 266 NVT, &Op, 1, false, SDLoc(N)); 267 } 268 269 SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) { 270 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 271 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 272 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 273 RTLIB::FLOOR_F32, 274 RTLIB::FLOOR_F64, 275 RTLIB::FLOOR_F80, 276 RTLIB::FLOOR_F128, 277 RTLIB::FLOOR_PPCF128), 278 NVT, &Op, 1, false, SDLoc(N)); 279 } 280 281 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) { 282 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 283 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 284 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 285 RTLIB::LOG_F32, 286 RTLIB::LOG_F64, 287 RTLIB::LOG_F80, 288 RTLIB::LOG_F128, 289 RTLIB::LOG_PPCF128), 290 NVT, &Op, 1, false, SDLoc(N)); 291 } 292 293 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) { 294 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 295 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 296 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 297 RTLIB::LOG2_F32, 298 RTLIB::LOG2_F64, 299 RTLIB::LOG2_F80, 300 RTLIB::LOG2_F128, 301 RTLIB::LOG2_PPCF128), 302 NVT, &Op, 1, false, SDLoc(N)); 303 } 304 305 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) { 306 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 307 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 308 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 309 RTLIB::LOG10_F32, 310 RTLIB::LOG10_F64, 311 RTLIB::LOG10_F80, 312 RTLIB::LOG10_F128, 313 RTLIB::LOG10_PPCF128), 314 NVT, &Op, 1, false, SDLoc(N)); 315 } 316 317 SDValue DAGTypeLegalizer::SoftenFloatRes_FMA(SDNode *N) { 318 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 319 SDValue Ops[3] = { GetSoftenedFloat(N->getOperand(0)), 320 GetSoftenedFloat(N->getOperand(1)), 321 GetSoftenedFloat(N->getOperand(2)) }; 322 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 323 RTLIB::FMA_F32, 324 RTLIB::FMA_F64, 325 RTLIB::FMA_F80, 326 RTLIB::FMA_F128, 327 RTLIB::FMA_PPCF128), 328 NVT, Ops, 3, false, SDLoc(N)); 329 } 330 331 SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) { 332 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 333 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 334 GetSoftenedFloat(N->getOperand(1)) }; 335 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 336 RTLIB::MUL_F32, 337 RTLIB::MUL_F64, 338 RTLIB::MUL_F80, 339 RTLIB::MUL_F128, 340 RTLIB::MUL_PPCF128), 341 NVT, Ops, 2, false, SDLoc(N)); 342 } 343 344 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) { 345 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 346 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 347 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 348 RTLIB::NEARBYINT_F32, 349 RTLIB::NEARBYINT_F64, 350 RTLIB::NEARBYINT_F80, 351 RTLIB::NEARBYINT_F128, 352 RTLIB::NEARBYINT_PPCF128), 353 NVT, &Op, 1, false, SDLoc(N)); 354 } 355 356 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) { 357 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 358 // Expand Y = FNEG(X) -> Y = SUB -0.0, X 359 SDValue Ops[2] = { DAG.getConstantFP(-0.0, N->getValueType(0)), 360 GetSoftenedFloat(N->getOperand(0)) }; 361 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 362 RTLIB::SUB_F32, 363 RTLIB::SUB_F64, 364 RTLIB::SUB_F80, 365 RTLIB::SUB_F128, 366 RTLIB::SUB_PPCF128), 367 NVT, Ops, 2, false, SDLoc(N)); 368 } 369 370 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) { 371 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 372 SDValue Op = N->getOperand(0); 373 RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0)); 374 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!"); 375 return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)); 376 } 377 378 // FIXME: Should we just use 'normal' FP_EXTEND / FP_TRUNC instead of special 379 // nodes? 380 SDValue DAGTypeLegalizer::SoftenFloatRes_FP16_TO_FP32(SDNode *N) { 381 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 382 SDValue Op = N->getOperand(0); 383 return TLI.makeLibCall(DAG, RTLIB::FPEXT_F16_F32, NVT, &Op, 1, false, 384 SDLoc(N)); 385 } 386 387 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) { 388 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 389 SDValue Op = N->getOperand(0); 390 RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0)); 391 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!"); 392 return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)); 393 } 394 395 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) { 396 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 397 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 398 GetSoftenedFloat(N->getOperand(1)) }; 399 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 400 RTLIB::POW_F32, 401 RTLIB::POW_F64, 402 RTLIB::POW_F80, 403 RTLIB::POW_F128, 404 RTLIB::POW_PPCF128), 405 NVT, Ops, 2, false, SDLoc(N)); 406 } 407 408 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) { 409 assert(N->getOperand(1).getValueType() == MVT::i32 && 410 "Unsupported power type!"); 411 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 412 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) }; 413 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 414 RTLIB::POWI_F32, 415 RTLIB::POWI_F64, 416 RTLIB::POWI_F80, 417 RTLIB::POWI_F128, 418 RTLIB::POWI_PPCF128), 419 NVT, Ops, 2, false, SDLoc(N)); 420 } 421 422 SDValue DAGTypeLegalizer::SoftenFloatRes_FREM(SDNode *N) { 423 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 424 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 425 GetSoftenedFloat(N->getOperand(1)) }; 426 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 427 RTLIB::REM_F32, 428 RTLIB::REM_F64, 429 RTLIB::REM_F80, 430 RTLIB::REM_F128, 431 RTLIB::REM_PPCF128), 432 NVT, Ops, 2, false, SDLoc(N)); 433 } 434 435 SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) { 436 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 437 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 438 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 439 RTLIB::RINT_F32, 440 RTLIB::RINT_F64, 441 RTLIB::RINT_F80, 442 RTLIB::RINT_F128, 443 RTLIB::RINT_PPCF128), 444 NVT, &Op, 1, false, SDLoc(N)); 445 } 446 447 SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) { 448 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 449 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 450 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 451 RTLIB::SIN_F32, 452 RTLIB::SIN_F64, 453 RTLIB::SIN_F80, 454 RTLIB::SIN_F128, 455 RTLIB::SIN_PPCF128), 456 NVT, &Op, 1, false, SDLoc(N)); 457 } 458 459 SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) { 460 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 461 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 462 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 463 RTLIB::SQRT_F32, 464 RTLIB::SQRT_F64, 465 RTLIB::SQRT_F80, 466 RTLIB::SQRT_F128, 467 RTLIB::SQRT_PPCF128), 468 NVT, &Op, 1, false, SDLoc(N)); 469 } 470 471 SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) { 472 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 473 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 474 GetSoftenedFloat(N->getOperand(1)) }; 475 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 476 RTLIB::SUB_F32, 477 RTLIB::SUB_F64, 478 RTLIB::SUB_F80, 479 RTLIB::SUB_F128, 480 RTLIB::SUB_PPCF128), 481 NVT, Ops, 2, false, SDLoc(N)); 482 } 483 484 SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) { 485 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 486 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 487 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 488 RTLIB::TRUNC_F32, 489 RTLIB::TRUNC_F64, 490 RTLIB::TRUNC_F80, 491 RTLIB::TRUNC_F128, 492 RTLIB::TRUNC_PPCF128), 493 NVT, &Op, 1, false, SDLoc(N)); 494 } 495 496 SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) { 497 LoadSDNode *L = cast<LoadSDNode>(N); 498 EVT VT = N->getValueType(0); 499 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 500 SDLoc dl(N); 501 502 SDValue NewL; 503 if (L->getExtensionType() == ISD::NON_EXTLOAD) { 504 NewL = DAG.getLoad(L->getAddressingMode(), L->getExtensionType(), 505 NVT, dl, L->getChain(), L->getBasePtr(), L->getOffset(), 506 L->getPointerInfo(), NVT, L->isVolatile(), 507 L->isNonTemporal(), false, L->getAlignment()); 508 // Legalized the chain result - switch anything that used the old chain to 509 // use the new one. 510 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1)); 511 return NewL; 512 } 513 514 // Do a non-extending load followed by FP_EXTEND. 515 NewL = DAG.getLoad(L->getAddressingMode(), ISD::NON_EXTLOAD, 516 L->getMemoryVT(), dl, L->getChain(), 517 L->getBasePtr(), L->getOffset(), L->getPointerInfo(), 518 L->getMemoryVT(), L->isVolatile(), 519 L->isNonTemporal(), false, L->getAlignment()); 520 // Legalized the chain result - switch anything that used the old chain to 521 // use the new one. 522 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1)); 523 return BitConvertToInteger(DAG.getNode(ISD::FP_EXTEND, dl, VT, NewL)); 524 } 525 526 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N) { 527 SDValue LHS = GetSoftenedFloat(N->getOperand(1)); 528 SDValue RHS = GetSoftenedFloat(N->getOperand(2)); 529 return DAG.getSelect(SDLoc(N), 530 LHS.getValueType(), N->getOperand(0), LHS, RHS); 531 } 532 533 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT_CC(SDNode *N) { 534 SDValue LHS = GetSoftenedFloat(N->getOperand(2)); 535 SDValue RHS = GetSoftenedFloat(N->getOperand(3)); 536 return DAG.getNode(ISD::SELECT_CC, SDLoc(N), 537 LHS.getValueType(), N->getOperand(0), 538 N->getOperand(1), LHS, RHS, N->getOperand(4)); 539 } 540 541 SDValue DAGTypeLegalizer::SoftenFloatRes_UNDEF(SDNode *N) { 542 return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(), 543 N->getValueType(0))); 544 } 545 546 SDValue DAGTypeLegalizer::SoftenFloatRes_VAARG(SDNode *N) { 547 SDValue Chain = N->getOperand(0); // Get the chain. 548 SDValue Ptr = N->getOperand(1); // Get the pointer. 549 EVT VT = N->getValueType(0); 550 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 551 SDLoc dl(N); 552 553 SDValue NewVAARG; 554 NewVAARG = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2), 555 N->getConstantOperandVal(3)); 556 557 // Legalized the chain result - switch anything that used the old chain to 558 // use the new one. 559 ReplaceValueWith(SDValue(N, 1), NewVAARG.getValue(1)); 560 return NewVAARG; 561 } 562 563 SDValue DAGTypeLegalizer::SoftenFloatRes_XINT_TO_FP(SDNode *N) { 564 bool Signed = N->getOpcode() == ISD::SINT_TO_FP; 565 EVT SVT = N->getOperand(0).getValueType(); 566 EVT RVT = N->getValueType(0); 567 EVT NVT = EVT(); 568 SDLoc dl(N); 569 570 // If the input is not legal, eg: i1 -> fp, then it needs to be promoted to 571 // a larger type, eg: i8 -> fp. Even if it is legal, no libcall may exactly 572 // match. Look for an appropriate libcall. 573 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 574 for (unsigned t = MVT::FIRST_INTEGER_VALUETYPE; 575 t <= MVT::LAST_INTEGER_VALUETYPE && LC == RTLIB::UNKNOWN_LIBCALL; ++t) { 576 NVT = (MVT::SimpleValueType)t; 577 // The source needs to big enough to hold the operand. 578 if (NVT.bitsGE(SVT)) 579 LC = Signed ? RTLIB::getSINTTOFP(NVT, RVT):RTLIB::getUINTTOFP (NVT, RVT); 580 } 581 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!"); 582 583 // Sign/zero extend the argument if the libcall takes a larger type. 584 SDValue Op = DAG.getNode(Signed ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl, 585 NVT, N->getOperand(0)); 586 return TLI.makeLibCall(DAG, LC, 587 TLI.getTypeToTransformTo(*DAG.getContext(), RVT), 588 &Op, 1, false, dl); 589 } 590 591 592 //===----------------------------------------------------------------------===// 593 // Operand Float to Integer Conversion.. 594 //===----------------------------------------------------------------------===// 595 596 bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) { 597 DEBUG(dbgs() << "Soften float operand " << OpNo << ": "; N->dump(&DAG); 598 dbgs() << "\n"); 599 SDValue Res = SDValue(); 600 601 switch (N->getOpcode()) { 602 default: 603 #ifndef NDEBUG 604 dbgs() << "SoftenFloatOperand Op #" << OpNo << ": "; 605 N->dump(&DAG); dbgs() << "\n"; 606 #endif 607 llvm_unreachable("Do not know how to soften this operator's operand!"); 608 609 case ISD::BITCAST: Res = SoftenFloatOp_BITCAST(N); break; 610 case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break; 611 case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break; 612 case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break; 613 case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_UINT(N); break; 614 case ISD::FP32_TO_FP16:Res = SoftenFloatOp_FP32_TO_FP16(N); break; 615 case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break; 616 case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break; 617 case ISD::STORE: Res = SoftenFloatOp_STORE(N, OpNo); break; 618 } 619 620 // If the result is null, the sub-method took care of registering results etc. 621 if (!Res.getNode()) return false; 622 623 // If the result is N, the sub-method updated N in place. Tell the legalizer 624 // core about this. 625 if (Res.getNode() == N) 626 return true; 627 628 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 629 "Invalid operand expansion"); 630 631 ReplaceValueWith(SDValue(N, 0), Res); 632 return false; 633 } 634 635 SDValue DAGTypeLegalizer::SoftenFloatOp_BITCAST(SDNode *N) { 636 return DAG.getNode(ISD::BITCAST, SDLoc(N), N->getValueType(0), 637 GetSoftenedFloat(N->getOperand(0))); 638 } 639 640 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) { 641 EVT SVT = N->getOperand(0).getValueType(); 642 EVT RVT = N->getValueType(0); 643 644 RTLIB::Libcall LC = RTLIB::getFPROUND(SVT, RVT); 645 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND libcall"); 646 647 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 648 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)); 649 } 650 651 SDValue DAGTypeLegalizer::SoftenFloatOp_BR_CC(SDNode *N) { 652 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); 653 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); 654 655 EVT VT = NewLHS.getValueType(); 656 NewLHS = GetSoftenedFloat(NewLHS); 657 NewRHS = GetSoftenedFloat(NewRHS); 658 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N)); 659 660 // If softenSetCCOperands returned a scalar, we need to compare the result 661 // against zero to select between true and false values. 662 if (NewRHS.getNode() == 0) { 663 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 664 CCCode = ISD::SETNE; 665 } 666 667 // Update N to have the operands specified. 668 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0), 669 DAG.getCondCode(CCCode), NewLHS, NewRHS, 670 N->getOperand(4)), 671 0); 672 } 673 674 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_SINT(SDNode *N) { 675 EVT RVT = N->getValueType(0); 676 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT); 677 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!"); 678 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 679 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)); 680 } 681 682 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) { 683 EVT RVT = N->getValueType(0); 684 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT); 685 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!"); 686 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 687 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)); 688 } 689 690 SDValue DAGTypeLegalizer::SoftenFloatOp_FP32_TO_FP16(SDNode *N) { 691 EVT RVT = N->getValueType(0); 692 RTLIB::Libcall LC = RTLIB::FPROUND_F32_F16; 693 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 694 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)); 695 } 696 697 SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) { 698 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 699 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); 700 701 EVT VT = NewLHS.getValueType(); 702 NewLHS = GetSoftenedFloat(NewLHS); 703 NewRHS = GetSoftenedFloat(NewRHS); 704 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N)); 705 706 // If softenSetCCOperands returned a scalar, we need to compare the result 707 // against zero to select between true and false values. 708 if (NewRHS.getNode() == 0) { 709 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 710 CCCode = ISD::SETNE; 711 } 712 713 // Update N to have the operands specified. 714 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 715 N->getOperand(2), N->getOperand(3), 716 DAG.getCondCode(CCCode)), 717 0); 718 } 719 720 SDValue DAGTypeLegalizer::SoftenFloatOp_SETCC(SDNode *N) { 721 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 722 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); 723 724 EVT VT = NewLHS.getValueType(); 725 NewLHS = GetSoftenedFloat(NewLHS); 726 NewRHS = GetSoftenedFloat(NewRHS); 727 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N)); 728 729 // If softenSetCCOperands returned a scalar, use it. 730 if (NewRHS.getNode() == 0) { 731 assert(NewLHS.getValueType() == N->getValueType(0) && 732 "Unexpected setcc expansion!"); 733 return NewLHS; 734 } 735 736 // Otherwise, update N to have the operands specified. 737 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 738 DAG.getCondCode(CCCode)), 739 0); 740 } 741 742 SDValue DAGTypeLegalizer::SoftenFloatOp_STORE(SDNode *N, unsigned OpNo) { 743 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 744 assert(OpNo == 1 && "Can only soften the stored value!"); 745 StoreSDNode *ST = cast<StoreSDNode>(N); 746 SDValue Val = ST->getValue(); 747 SDLoc dl(N); 748 749 if (ST->isTruncatingStore()) 750 // Do an FP_ROUND followed by a non-truncating store. 751 Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, dl, ST->getMemoryVT(), 752 Val, DAG.getIntPtrConstant(0))); 753 else 754 Val = GetSoftenedFloat(Val); 755 756 return DAG.getStore(ST->getChain(), dl, Val, ST->getBasePtr(), 757 ST->getPointerInfo(), 758 ST->isVolatile(), ST->isNonTemporal(), 759 ST->getAlignment()); 760 } 761 762 763 //===----------------------------------------------------------------------===// 764 // Float Result Expansion 765 //===----------------------------------------------------------------------===// 766 767 /// ExpandFloatResult - This method is called when the specified result of the 768 /// specified node is found to need expansion. At this point, the node may also 769 /// have invalid operands or may have other results that need promotion, we just 770 /// know that (at least) one result needs expansion. 771 void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) { 772 DEBUG(dbgs() << "Expand float result: "; N->dump(&DAG); dbgs() << "\n"); 773 SDValue Lo, Hi; 774 Lo = Hi = SDValue(); 775 776 // See if the target wants to custom expand this node. 777 if (CustomLowerNode(N, N->getValueType(ResNo), true)) 778 return; 779 780 switch (N->getOpcode()) { 781 default: 782 #ifndef NDEBUG 783 dbgs() << "ExpandFloatResult #" << ResNo << ": "; 784 N->dump(&DAG); dbgs() << "\n"; 785 #endif 786 llvm_unreachable("Do not know how to expand the result of this operator!"); 787 788 case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break; 789 case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break; 790 case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break; 791 792 case ISD::MERGE_VALUES: ExpandRes_MERGE_VALUES(N, ResNo, Lo, Hi); break; 793 case ISD::BITCAST: ExpandRes_BITCAST(N, Lo, Hi); break; 794 case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break; 795 case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break; 796 case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break; 797 case ISD::VAARG: ExpandRes_VAARG(N, Lo, Hi); break; 798 799 case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break; 800 case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break; 801 case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break; 802 case ISD::FCEIL: ExpandFloatRes_FCEIL(N, Lo, Hi); break; 803 case ISD::FCOPYSIGN: ExpandFloatRes_FCOPYSIGN(N, Lo, Hi); break; 804 case ISD::FCOS: ExpandFloatRes_FCOS(N, Lo, Hi); break; 805 case ISD::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break; 806 case ISD::FEXP: ExpandFloatRes_FEXP(N, Lo, Hi); break; 807 case ISD::FEXP2: ExpandFloatRes_FEXP2(N, Lo, Hi); break; 808 case ISD::FFLOOR: ExpandFloatRes_FFLOOR(N, Lo, Hi); break; 809 case ISD::FLOG: ExpandFloatRes_FLOG(N, Lo, Hi); break; 810 case ISD::FLOG2: ExpandFloatRes_FLOG2(N, Lo, Hi); break; 811 case ISD::FLOG10: ExpandFloatRes_FLOG10(N, Lo, Hi); break; 812 case ISD::FMA: ExpandFloatRes_FMA(N, Lo, Hi); break; 813 case ISD::FMUL: ExpandFloatRes_FMUL(N, Lo, Hi); break; 814 case ISD::FNEARBYINT: ExpandFloatRes_FNEARBYINT(N, Lo, Hi); break; 815 case ISD::FNEG: ExpandFloatRes_FNEG(N, Lo, Hi); break; 816 case ISD::FP_EXTEND: ExpandFloatRes_FP_EXTEND(N, Lo, Hi); break; 817 case ISD::FPOW: ExpandFloatRes_FPOW(N, Lo, Hi); break; 818 case ISD::FPOWI: ExpandFloatRes_FPOWI(N, Lo, Hi); break; 819 case ISD::FRINT: ExpandFloatRes_FRINT(N, Lo, Hi); break; 820 case ISD::FSIN: ExpandFloatRes_FSIN(N, Lo, Hi); break; 821 case ISD::FSQRT: ExpandFloatRes_FSQRT(N, Lo, Hi); break; 822 case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break; 823 case ISD::FTRUNC: ExpandFloatRes_FTRUNC(N, Lo, Hi); break; 824 case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break; 825 case ISD::SINT_TO_FP: 826 case ISD::UINT_TO_FP: ExpandFloatRes_XINT_TO_FP(N, Lo, Hi); break; 827 case ISD::FREM: ExpandFloatRes_FREM(N, Lo, Hi); break; 828 } 829 830 // If Lo/Hi is null, the sub-method took care of registering results etc. 831 if (Lo.getNode()) 832 SetExpandedFloat(SDValue(N, ResNo), Lo, Hi); 833 } 834 835 void DAGTypeLegalizer::ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, 836 SDValue &Hi) { 837 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 838 assert(NVT.getSizeInBits() == integerPartWidth && 839 "Do not know how to expand this float constant!"); 840 APInt C = cast<ConstantFPSDNode>(N)->getValueAPF().bitcastToAPInt(); 841 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 842 APInt(integerPartWidth, C.getRawData()[1])), 843 NVT); 844 Hi = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 845 APInt(integerPartWidth, C.getRawData()[0])), 846 NVT); 847 } 848 849 void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo, 850 SDValue &Hi) { 851 assert(N->getValueType(0) == MVT::ppcf128 && 852 "Logic only correct for ppcf128!"); 853 SDLoc dl(N); 854 SDValue Tmp; 855 GetExpandedFloat(N->getOperand(0), Lo, Tmp); 856 Hi = DAG.getNode(ISD::FABS, dl, Tmp.getValueType(), Tmp); 857 // Lo = Hi==fabs(Hi) ? Lo : -Lo; 858 Lo = DAG.getSelectCC(dl, Tmp, Hi, Lo, 859 DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo), 860 ISD::SETEQ); 861 } 862 863 void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo, 864 SDValue &Hi) { 865 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 866 RTLIB::ADD_F32, RTLIB::ADD_F64, 867 RTLIB::ADD_F80, RTLIB::ADD_F128, 868 RTLIB::ADD_PPCF128), 869 N, false); 870 GetPairElements(Call, Lo, Hi); 871 } 872 873 void DAGTypeLegalizer::ExpandFloatRes_FCEIL(SDNode *N, 874 SDValue &Lo, SDValue &Hi) { 875 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 876 RTLIB::CEIL_F32, RTLIB::CEIL_F64, 877 RTLIB::CEIL_F80, RTLIB::CEIL_F128, 878 RTLIB::CEIL_PPCF128), 879 N, false); 880 GetPairElements(Call, Lo, Hi); 881 } 882 883 void DAGTypeLegalizer::ExpandFloatRes_FCOPYSIGN(SDNode *N, 884 SDValue &Lo, SDValue &Hi) { 885 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 886 RTLIB::COPYSIGN_F32, 887 RTLIB::COPYSIGN_F64, 888 RTLIB::COPYSIGN_F80, 889 RTLIB::COPYSIGN_F128, 890 RTLIB::COPYSIGN_PPCF128), 891 N, false); 892 GetPairElements(Call, Lo, Hi); 893 } 894 895 void DAGTypeLegalizer::ExpandFloatRes_FCOS(SDNode *N, 896 SDValue &Lo, SDValue &Hi) { 897 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 898 RTLIB::COS_F32, RTLIB::COS_F64, 899 RTLIB::COS_F80, RTLIB::COS_F128, 900 RTLIB::COS_PPCF128), 901 N, false); 902 GetPairElements(Call, Lo, Hi); 903 } 904 905 void DAGTypeLegalizer::ExpandFloatRes_FDIV(SDNode *N, SDValue &Lo, 906 SDValue &Hi) { 907 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 908 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 909 RTLIB::DIV_F32, 910 RTLIB::DIV_F64, 911 RTLIB::DIV_F80, 912 RTLIB::DIV_F128, 913 RTLIB::DIV_PPCF128), 914 N->getValueType(0), Ops, 2, false, 915 SDLoc(N)); 916 GetPairElements(Call, Lo, Hi); 917 } 918 919 void DAGTypeLegalizer::ExpandFloatRes_FEXP(SDNode *N, 920 SDValue &Lo, SDValue &Hi) { 921 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 922 RTLIB::EXP_F32, RTLIB::EXP_F64, 923 RTLIB::EXP_F80, RTLIB::EXP_F128, 924 RTLIB::EXP_PPCF128), 925 N, false); 926 GetPairElements(Call, Lo, Hi); 927 } 928 929 void DAGTypeLegalizer::ExpandFloatRes_FEXP2(SDNode *N, 930 SDValue &Lo, SDValue &Hi) { 931 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 932 RTLIB::EXP2_F32, RTLIB::EXP2_F64, 933 RTLIB::EXP2_F80, RTLIB::EXP2_F128, 934 RTLIB::EXP2_PPCF128), 935 N, false); 936 GetPairElements(Call, Lo, Hi); 937 } 938 939 void DAGTypeLegalizer::ExpandFloatRes_FFLOOR(SDNode *N, 940 SDValue &Lo, SDValue &Hi) { 941 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 942 RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 943 RTLIB::FLOOR_F80, RTLIB::FLOOR_F128, 944 RTLIB::FLOOR_PPCF128), 945 N, false); 946 GetPairElements(Call, Lo, Hi); 947 } 948 949 void DAGTypeLegalizer::ExpandFloatRes_FLOG(SDNode *N, 950 SDValue &Lo, SDValue &Hi) { 951 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 952 RTLIB::LOG_F32, RTLIB::LOG_F64, 953 RTLIB::LOG_F80, RTLIB::LOG_F128, 954 RTLIB::LOG_PPCF128), 955 N, false); 956 GetPairElements(Call, Lo, Hi); 957 } 958 959 void DAGTypeLegalizer::ExpandFloatRes_FLOG2(SDNode *N, 960 SDValue &Lo, SDValue &Hi) { 961 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 962 RTLIB::LOG2_F32, RTLIB::LOG2_F64, 963 RTLIB::LOG2_F80, RTLIB::LOG2_F128, 964 RTLIB::LOG2_PPCF128), 965 N, false); 966 GetPairElements(Call, Lo, Hi); 967 } 968 969 void DAGTypeLegalizer::ExpandFloatRes_FLOG10(SDNode *N, 970 SDValue &Lo, SDValue &Hi) { 971 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 972 RTLIB::LOG10_F32, RTLIB::LOG10_F64, 973 RTLIB::LOG10_F80, RTLIB::LOG10_F128, 974 RTLIB::LOG10_PPCF128), 975 N, false); 976 GetPairElements(Call, Lo, Hi); 977 } 978 979 void DAGTypeLegalizer::ExpandFloatRes_FMA(SDNode *N, SDValue &Lo, 980 SDValue &Hi) { 981 SDValue Ops[3] = { N->getOperand(0), N->getOperand(1), N->getOperand(2) }; 982 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 983 RTLIB::FMA_F32, 984 RTLIB::FMA_F64, 985 RTLIB::FMA_F80, 986 RTLIB::FMA_F128, 987 RTLIB::FMA_PPCF128), 988 N->getValueType(0), Ops, 3, false, 989 SDLoc(N)); 990 GetPairElements(Call, Lo, Hi); 991 } 992 993 void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDValue &Lo, 994 SDValue &Hi) { 995 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 996 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 997 RTLIB::MUL_F32, 998 RTLIB::MUL_F64, 999 RTLIB::MUL_F80, 1000 RTLIB::MUL_F128, 1001 RTLIB::MUL_PPCF128), 1002 N->getValueType(0), Ops, 2, false, 1003 SDLoc(N)); 1004 GetPairElements(Call, Lo, Hi); 1005 } 1006 1007 void DAGTypeLegalizer::ExpandFloatRes_FNEARBYINT(SDNode *N, 1008 SDValue &Lo, SDValue &Hi) { 1009 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1010 RTLIB::NEARBYINT_F32, 1011 RTLIB::NEARBYINT_F64, 1012 RTLIB::NEARBYINT_F80, 1013 RTLIB::NEARBYINT_F128, 1014 RTLIB::NEARBYINT_PPCF128), 1015 N, false); 1016 GetPairElements(Call, Lo, Hi); 1017 } 1018 1019 void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDValue &Lo, 1020 SDValue &Hi) { 1021 SDLoc dl(N); 1022 GetExpandedFloat(N->getOperand(0), Lo, Hi); 1023 Lo = DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo); 1024 Hi = DAG.getNode(ISD::FNEG, dl, Hi.getValueType(), Hi); 1025 } 1026 1027 void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo, 1028 SDValue &Hi) { 1029 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 1030 Hi = DAG.getNode(ISD::FP_EXTEND, SDLoc(N), NVT, N->getOperand(0)); 1031 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 1032 APInt(NVT.getSizeInBits(), 0)), NVT); 1033 } 1034 1035 void DAGTypeLegalizer::ExpandFloatRes_FPOW(SDNode *N, 1036 SDValue &Lo, SDValue &Hi) { 1037 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1038 RTLIB::POW_F32, RTLIB::POW_F64, 1039 RTLIB::POW_F80, RTLIB::POW_F128, 1040 RTLIB::POW_PPCF128), 1041 N, false); 1042 GetPairElements(Call, Lo, Hi); 1043 } 1044 1045 void DAGTypeLegalizer::ExpandFloatRes_FPOWI(SDNode *N, 1046 SDValue &Lo, SDValue &Hi) { 1047 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1048 RTLIB::POWI_F32, RTLIB::POWI_F64, 1049 RTLIB::POWI_F80, RTLIB::POWI_F128, 1050 RTLIB::POWI_PPCF128), 1051 N, false); 1052 GetPairElements(Call, Lo, Hi); 1053 } 1054 1055 void DAGTypeLegalizer::ExpandFloatRes_FREM(SDNode *N, 1056 SDValue &Lo, SDValue &Hi) { 1057 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1058 RTLIB::REM_F32, RTLIB::REM_F64, 1059 RTLIB::REM_F80, RTLIB::REM_F128, 1060 RTLIB::REM_PPCF128), 1061 N, false); 1062 GetPairElements(Call, Lo, Hi); 1063 } 1064 1065 void DAGTypeLegalizer::ExpandFloatRes_FRINT(SDNode *N, 1066 SDValue &Lo, SDValue &Hi) { 1067 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1068 RTLIB::RINT_F32, RTLIB::RINT_F64, 1069 RTLIB::RINT_F80, RTLIB::RINT_F128, 1070 RTLIB::RINT_PPCF128), 1071 N, false); 1072 GetPairElements(Call, Lo, Hi); 1073 } 1074 1075 void DAGTypeLegalizer::ExpandFloatRes_FSIN(SDNode *N, 1076 SDValue &Lo, SDValue &Hi) { 1077 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1078 RTLIB::SIN_F32, RTLIB::SIN_F64, 1079 RTLIB::SIN_F80, RTLIB::SIN_F128, 1080 RTLIB::SIN_PPCF128), 1081 N, false); 1082 GetPairElements(Call, Lo, Hi); 1083 } 1084 1085 void DAGTypeLegalizer::ExpandFloatRes_FSQRT(SDNode *N, 1086 SDValue &Lo, SDValue &Hi) { 1087 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1088 RTLIB::SQRT_F32, RTLIB::SQRT_F64, 1089 RTLIB::SQRT_F80, RTLIB::SQRT_F128, 1090 RTLIB::SQRT_PPCF128), 1091 N, false); 1092 GetPairElements(Call, Lo, Hi); 1093 } 1094 1095 void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo, 1096 SDValue &Hi) { 1097 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1098 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 1099 RTLIB::SUB_F32, 1100 RTLIB::SUB_F64, 1101 RTLIB::SUB_F80, 1102 RTLIB::SUB_F128, 1103 RTLIB::SUB_PPCF128), 1104 N->getValueType(0), Ops, 2, false, 1105 SDLoc(N)); 1106 GetPairElements(Call, Lo, Hi); 1107 } 1108 1109 void DAGTypeLegalizer::ExpandFloatRes_FTRUNC(SDNode *N, 1110 SDValue &Lo, SDValue &Hi) { 1111 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1112 RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 1113 RTLIB::TRUNC_F80, RTLIB::TRUNC_F128, 1114 RTLIB::TRUNC_PPCF128), 1115 N, false); 1116 GetPairElements(Call, Lo, Hi); 1117 } 1118 1119 void DAGTypeLegalizer::ExpandFloatRes_LOAD(SDNode *N, SDValue &Lo, 1120 SDValue &Hi) { 1121 if (ISD::isNormalLoad(N)) { 1122 ExpandRes_NormalLoad(N, Lo, Hi); 1123 return; 1124 } 1125 1126 assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 1127 LoadSDNode *LD = cast<LoadSDNode>(N); 1128 SDValue Chain = LD->getChain(); 1129 SDValue Ptr = LD->getBasePtr(); 1130 SDLoc dl(N); 1131 1132 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), LD->getValueType(0)); 1133 assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1134 assert(LD->getMemoryVT().bitsLE(NVT) && "Float type not round?"); 1135 1136 Hi = DAG.getExtLoad(LD->getExtensionType(), dl, NVT, Chain, Ptr, 1137 LD->getPointerInfo(), LD->getMemoryVT(), LD->isVolatile(), 1138 LD->isNonTemporal(), LD->getAlignment()); 1139 1140 // Remember the chain. 1141 Chain = Hi.getValue(1); 1142 1143 // The low part is zero. 1144 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 1145 APInt(NVT.getSizeInBits(), 0)), NVT); 1146 1147 // Modified the chain - switch anything that used the old chain to use the 1148 // new one. 1149 ReplaceValueWith(SDValue(LD, 1), Chain); 1150 } 1151 1152 void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, 1153 SDValue &Hi) { 1154 assert(N->getValueType(0) == MVT::ppcf128 && "Unsupported XINT_TO_FP!"); 1155 EVT VT = N->getValueType(0); 1156 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 1157 SDValue Src = N->getOperand(0); 1158 EVT SrcVT = Src.getValueType(); 1159 bool isSigned = N->getOpcode() == ISD::SINT_TO_FP; 1160 SDLoc dl(N); 1161 1162 // First do an SINT_TO_FP, whether the original was signed or unsigned. 1163 // When promoting partial word types to i32 we must honor the signedness, 1164 // though. 1165 if (SrcVT.bitsLE(MVT::i32)) { 1166 // The integer can be represented exactly in an f64. 1167 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl, 1168 MVT::i32, Src); 1169 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 1170 APInt(NVT.getSizeInBits(), 0)), NVT); 1171 Hi = DAG.getNode(ISD::SINT_TO_FP, dl, NVT, Src); 1172 } else { 1173 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 1174 if (SrcVT.bitsLE(MVT::i64)) { 1175 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl, 1176 MVT::i64, Src); 1177 LC = RTLIB::SINTTOFP_I64_PPCF128; 1178 } else if (SrcVT.bitsLE(MVT::i128)) { 1179 Src = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i128, Src); 1180 LC = RTLIB::SINTTOFP_I128_PPCF128; 1181 } 1182 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!"); 1183 1184 Hi = TLI.makeLibCall(DAG, LC, VT, &Src, 1, true, dl); 1185 GetPairElements(Hi, Lo, Hi); 1186 } 1187 1188 if (isSigned) 1189 return; 1190 1191 // Unsigned - fix up the SINT_TO_FP value just calculated. 1192 Hi = DAG.getNode(ISD::BUILD_PAIR, dl, VT, Lo, Hi); 1193 SrcVT = Src.getValueType(); 1194 1195 // x>=0 ? (ppcf128)(iN)x : (ppcf128)(iN)x + 2^N; N=32,64,128. 1196 static const uint64_t TwoE32[] = { 0x41f0000000000000LL, 0 }; 1197 static const uint64_t TwoE64[] = { 0x43f0000000000000LL, 0 }; 1198 static const uint64_t TwoE128[] = { 0x47f0000000000000LL, 0 }; 1199 ArrayRef<uint64_t> Parts; 1200 1201 switch (SrcVT.getSimpleVT().SimpleTy) { 1202 default: 1203 llvm_unreachable("Unsupported UINT_TO_FP!"); 1204 case MVT::i32: 1205 Parts = TwoE32; 1206 break; 1207 case MVT::i64: 1208 Parts = TwoE64; 1209 break; 1210 case MVT::i128: 1211 Parts = TwoE128; 1212 break; 1213 } 1214 1215 Lo = DAG.getNode(ISD::FADD, dl, VT, Hi, 1216 DAG.getConstantFP(APFloat(APFloat::PPCDoubleDouble, 1217 APInt(128, Parts)), 1218 MVT::ppcf128)); 1219 Lo = DAG.getSelectCC(dl, Src, DAG.getConstant(0, SrcVT), 1220 Lo, Hi, ISD::SETLT); 1221 GetPairElements(Lo, Lo, Hi); 1222 } 1223 1224 1225 //===----------------------------------------------------------------------===// 1226 // Float Operand Expansion 1227 //===----------------------------------------------------------------------===// 1228 1229 /// ExpandFloatOperand - This method is called when the specified operand of the 1230 /// specified node is found to need expansion. At this point, all of the result 1231 /// types of the node are known to be legal, but other operands of the node may 1232 /// need promotion or expansion as well as the specified one. 1233 bool DAGTypeLegalizer::ExpandFloatOperand(SDNode *N, unsigned OpNo) { 1234 DEBUG(dbgs() << "Expand float operand: "; N->dump(&DAG); dbgs() << "\n"); 1235 SDValue Res = SDValue(); 1236 1237 // See if the target wants to custom expand this node. 1238 if (CustomLowerNode(N, N->getOperand(OpNo).getValueType(), false)) 1239 return false; 1240 1241 switch (N->getOpcode()) { 1242 default: 1243 #ifndef NDEBUG 1244 dbgs() << "ExpandFloatOperand Op #" << OpNo << ": "; 1245 N->dump(&DAG); dbgs() << "\n"; 1246 #endif 1247 llvm_unreachable("Do not know how to expand this operator's operand!"); 1248 1249 case ISD::BITCAST: Res = ExpandOp_BITCAST(N); break; 1250 case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break; 1251 case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break; 1252 1253 case ISD::BR_CC: Res = ExpandFloatOp_BR_CC(N); break; 1254 case ISD::FP_ROUND: Res = ExpandFloatOp_FP_ROUND(N); break; 1255 case ISD::FP_TO_SINT: Res = ExpandFloatOp_FP_TO_SINT(N); break; 1256 case ISD::FP_TO_UINT: Res = ExpandFloatOp_FP_TO_UINT(N); break; 1257 case ISD::SELECT_CC: Res = ExpandFloatOp_SELECT_CC(N); break; 1258 case ISD::SETCC: Res = ExpandFloatOp_SETCC(N); break; 1259 case ISD::STORE: Res = ExpandFloatOp_STORE(cast<StoreSDNode>(N), 1260 OpNo); break; 1261 } 1262 1263 // If the result is null, the sub-method took care of registering results etc. 1264 if (!Res.getNode()) return false; 1265 1266 // If the result is N, the sub-method updated N in place. Tell the legalizer 1267 // core about this. 1268 if (Res.getNode() == N) 1269 return true; 1270 1271 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 1272 "Invalid operand expansion"); 1273 1274 ReplaceValueWith(SDValue(N, 0), Res); 1275 return false; 1276 } 1277 1278 /// FloatExpandSetCCOperands - Expand the operands of a comparison. This code 1279 /// is shared among BR_CC, SELECT_CC, and SETCC handlers. 1280 void DAGTypeLegalizer::FloatExpandSetCCOperands(SDValue &NewLHS, 1281 SDValue &NewRHS, 1282 ISD::CondCode &CCCode, 1283 SDLoc dl) { 1284 SDValue LHSLo, LHSHi, RHSLo, RHSHi; 1285 GetExpandedFloat(NewLHS, LHSLo, LHSHi); 1286 GetExpandedFloat(NewRHS, RHSLo, RHSHi); 1287 1288 assert(NewLHS.getValueType() == MVT::ppcf128 && "Unsupported setcc type!"); 1289 1290 // FIXME: This generated code sucks. We want to generate 1291 // FCMPU crN, hi1, hi2 1292 // BNE crN, L: 1293 // FCMPU crN, lo1, lo2 1294 // The following can be improved, but not that much. 1295 SDValue Tmp1, Tmp2, Tmp3; 1296 Tmp1 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()), 1297 LHSHi, RHSHi, ISD::SETOEQ); 1298 Tmp2 = DAG.getSetCC(dl, getSetCCResultType(LHSLo.getValueType()), 1299 LHSLo, RHSLo, CCCode); 1300 Tmp3 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2); 1301 Tmp1 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()), 1302 LHSHi, RHSHi, ISD::SETUNE); 1303 Tmp2 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()), 1304 LHSHi, RHSHi, CCCode); 1305 Tmp1 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2); 1306 NewLHS = DAG.getNode(ISD::OR, dl, Tmp1.getValueType(), Tmp1, Tmp3); 1307 NewRHS = SDValue(); // LHS is the result, not a compare. 1308 } 1309 1310 SDValue DAGTypeLegalizer::ExpandFloatOp_BR_CC(SDNode *N) { 1311 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); 1312 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); 1313 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N)); 1314 1315 // If ExpandSetCCOperands returned a scalar, we need to compare the result 1316 // against zero to select between true and false values. 1317 if (NewRHS.getNode() == 0) { 1318 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 1319 CCCode = ISD::SETNE; 1320 } 1321 1322 // Update N to have the operands specified. 1323 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0), 1324 DAG.getCondCode(CCCode), NewLHS, NewRHS, 1325 N->getOperand(4)), 0); 1326 } 1327 1328 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_ROUND(SDNode *N) { 1329 assert(N->getOperand(0).getValueType() == MVT::ppcf128 && 1330 "Logic only correct for ppcf128!"); 1331 SDValue Lo, Hi; 1332 GetExpandedFloat(N->getOperand(0), Lo, Hi); 1333 // Round it the rest of the way (e.g. to f32) if needed. 1334 return DAG.getNode(ISD::FP_ROUND, SDLoc(N), 1335 N->getValueType(0), Hi, N->getOperand(1)); 1336 } 1337 1338 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) { 1339 EVT RVT = N->getValueType(0); 1340 SDLoc dl(N); 1341 1342 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on 1343 // PPC (the libcall is not available). FIXME: Do this in a less hacky way. 1344 if (RVT == MVT::i32) { 1345 assert(N->getOperand(0).getValueType() == MVT::ppcf128 && 1346 "Logic only correct for ppcf128!"); 1347 SDValue Res = DAG.getNode(ISD::FP_ROUND_INREG, dl, MVT::ppcf128, 1348 N->getOperand(0), DAG.getValueType(MVT::f64)); 1349 Res = DAG.getNode(ISD::FP_ROUND, dl, MVT::f64, Res, 1350 DAG.getIntPtrConstant(1)); 1351 return DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, Res); 1352 } 1353 1354 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT); 1355 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!"); 1356 return TLI.makeLibCall(DAG, LC, RVT, &N->getOperand(0), 1, false, dl); 1357 } 1358 1359 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) { 1360 EVT RVT = N->getValueType(0); 1361 SDLoc dl(N); 1362 1363 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on 1364 // PPC (the libcall is not available). FIXME: Do this in a less hacky way. 1365 if (RVT == MVT::i32) { 1366 assert(N->getOperand(0).getValueType() == MVT::ppcf128 && 1367 "Logic only correct for ppcf128!"); 1368 const uint64_t TwoE31[] = {0x41e0000000000000LL, 0}; 1369 APFloat APF = APFloat(APFloat::PPCDoubleDouble, APInt(128, TwoE31)); 1370 SDValue Tmp = DAG.getConstantFP(APF, MVT::ppcf128); 1371 // X>=2^31 ? (int)(X-2^31)+0x80000000 : (int)X 1372 // FIXME: generated code sucks. 1373 return DAG.getSelectCC(dl, N->getOperand(0), Tmp, 1374 DAG.getNode(ISD::ADD, dl, MVT::i32, 1375 DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, 1376 DAG.getNode(ISD::FSUB, dl, 1377 MVT::ppcf128, 1378 N->getOperand(0), 1379 Tmp)), 1380 DAG.getConstant(0x80000000, MVT::i32)), 1381 DAG.getNode(ISD::FP_TO_SINT, dl, 1382 MVT::i32, N->getOperand(0)), 1383 ISD::SETGE); 1384 } 1385 1386 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT); 1387 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!"); 1388 return TLI.makeLibCall(DAG, LC, N->getValueType(0), &N->getOperand(0), 1, 1389 false, dl); 1390 } 1391 1392 SDValue DAGTypeLegalizer::ExpandFloatOp_SELECT_CC(SDNode *N) { 1393 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 1394 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); 1395 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N)); 1396 1397 // If ExpandSetCCOperands returned a scalar, we need to compare the result 1398 // against zero to select between true and false values. 1399 if (NewRHS.getNode() == 0) { 1400 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 1401 CCCode = ISD::SETNE; 1402 } 1403 1404 // Update N to have the operands specified. 1405 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 1406 N->getOperand(2), N->getOperand(3), 1407 DAG.getCondCode(CCCode)), 0); 1408 } 1409 1410 SDValue DAGTypeLegalizer::ExpandFloatOp_SETCC(SDNode *N) { 1411 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 1412 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); 1413 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N)); 1414 1415 // If ExpandSetCCOperands returned a scalar, use it. 1416 if (NewRHS.getNode() == 0) { 1417 assert(NewLHS.getValueType() == N->getValueType(0) && 1418 "Unexpected setcc expansion!"); 1419 return NewLHS; 1420 } 1421 1422 // Otherwise, update N to have the operands specified. 1423 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 1424 DAG.getCondCode(CCCode)), 0); 1425 } 1426 1427 SDValue DAGTypeLegalizer::ExpandFloatOp_STORE(SDNode *N, unsigned OpNo) { 1428 if (ISD::isNormalStore(N)) 1429 return ExpandOp_NormalStore(N, OpNo); 1430 1431 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 1432 assert(OpNo == 1 && "Can only expand the stored value so far"); 1433 StoreSDNode *ST = cast<StoreSDNode>(N); 1434 1435 SDValue Chain = ST->getChain(); 1436 SDValue Ptr = ST->getBasePtr(); 1437 1438 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 1439 ST->getValue().getValueType()); 1440 assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1441 assert(ST->getMemoryVT().bitsLE(NVT) && "Float type not round?"); 1442 (void)NVT; 1443 1444 SDValue Lo, Hi; 1445 GetExpandedOp(ST->getValue(), Lo, Hi); 1446 1447 return DAG.getTruncStore(Chain, SDLoc(N), Hi, Ptr, 1448 ST->getPointerInfo(), 1449 ST->getMemoryVT(), ST->isVolatile(), 1450 ST->isNonTemporal(), ST->getAlignment()); 1451 } 1452
