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" 25using namespace llvm; 26 27/// GetFPLibCall - Return the right libcall for the given floating point type. 28static 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 47void 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::FROUND: R = SoftenFloatRes_FROUND(N); break; 92 case ISD::FSIN: R = SoftenFloatRes_FSIN(N); break; 93 case ISD::FSQRT: R = SoftenFloatRes_FSQRT(N); break; 94 case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break; 95 case ISD::FTRUNC: R = SoftenFloatRes_FTRUNC(N); break; 96 case ISD::LOAD: R = SoftenFloatRes_LOAD(N); break; 97 case ISD::SELECT: R = SoftenFloatRes_SELECT(N); break; 98 case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N); break; 99 case ISD::SINT_TO_FP: 100 case ISD::UINT_TO_FP: R = SoftenFloatRes_XINT_TO_FP(N); break; 101 case ISD::UNDEF: R = SoftenFloatRes_UNDEF(N); break; 102 case ISD::VAARG: R = SoftenFloatRes_VAARG(N); break; 103 } 104 105 // If R is null, the sub-method took care of registering the result. 106 if (R.getNode()) 107 SetSoftenedFloat(SDValue(N, ResNo), R); 108} 109 110SDValue DAGTypeLegalizer::SoftenFloatRes_BITCAST(SDNode *N) { 111 return BitConvertToInteger(N->getOperand(0)); 112} 113 114SDValue DAGTypeLegalizer::SoftenFloatRes_MERGE_VALUES(SDNode *N, 115 unsigned ResNo) { 116 SDValue Op = DisintegrateMERGE_VALUES(N, ResNo); 117 return BitConvertToInteger(Op); 118} 119 120SDValue DAGTypeLegalizer::SoftenFloatRes_BUILD_PAIR(SDNode *N) { 121 // Convert the inputs to integers, and build a new pair out of them. 122 return DAG.getNode(ISD::BUILD_PAIR, SDLoc(N), 123 TLI.getTypeToTransformTo(*DAG.getContext(), 124 N->getValueType(0)), 125 BitConvertToInteger(N->getOperand(0)), 126 BitConvertToInteger(N->getOperand(1))); 127} 128 129SDValue DAGTypeLegalizer::SoftenFloatRes_ConstantFP(ConstantFPSDNode *N) { 130 return DAG.getConstant(N->getValueAPF().bitcastToAPInt(), 131 TLI.getTypeToTransformTo(*DAG.getContext(), 132 N->getValueType(0))); 133} 134 135SDValue DAGTypeLegalizer::SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N) { 136 SDValue NewOp = BitConvertVectorToIntegerVector(N->getOperand(0)); 137 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SDLoc(N), 138 NewOp.getValueType().getVectorElementType(), 139 NewOp, N->getOperand(1)); 140} 141 142SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) { 143 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 144 unsigned Size = NVT.getSizeInBits(); 145 146 // Mask = ~(1 << (Size-1)) 147 APInt API = APInt::getAllOnesValue(Size); 148 API.clearBit(Size-1); 149 SDValue Mask = DAG.getConstant(API, NVT); 150 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 151 return DAG.getNode(ISD::AND, SDLoc(N), NVT, Op, Mask); 152} 153 154SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) { 155 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 156 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 157 GetSoftenedFloat(N->getOperand(1)) }; 158 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 159 RTLIB::ADD_F32, 160 RTLIB::ADD_F64, 161 RTLIB::ADD_F80, 162 RTLIB::ADD_F128, 163 RTLIB::ADD_PPCF128), 164 NVT, Ops, 2, false, SDLoc(N)).first; 165} 166 167SDValue DAGTypeLegalizer::SoftenFloatRes_FCEIL(SDNode *N) { 168 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 169 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 170 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 171 RTLIB::CEIL_F32, 172 RTLIB::CEIL_F64, 173 RTLIB::CEIL_F80, 174 RTLIB::CEIL_F128, 175 RTLIB::CEIL_PPCF128), 176 NVT, &Op, 1, false, SDLoc(N)).first; 177} 178 179SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) { 180 SDValue LHS = GetSoftenedFloat(N->getOperand(0)); 181 SDValue RHS = BitConvertToInteger(N->getOperand(1)); 182 SDLoc dl(N); 183 184 EVT LVT = LHS.getValueType(); 185 EVT RVT = RHS.getValueType(); 186 187 unsigned LSize = LVT.getSizeInBits(); 188 unsigned RSize = RVT.getSizeInBits(); 189 190 // First get the sign bit of second operand. 191 SDValue SignBit = DAG.getNode(ISD::SHL, dl, RVT, DAG.getConstant(1, RVT), 192 DAG.getConstant(RSize - 1, 193 TLI.getShiftAmountTy(RVT))); 194 SignBit = DAG.getNode(ISD::AND, dl, RVT, RHS, SignBit); 195 196 // Shift right or sign-extend it if the two operands have different types. 197 int SizeDiff = RVT.getSizeInBits() - LVT.getSizeInBits(); 198 if (SizeDiff > 0) { 199 SignBit = DAG.getNode(ISD::SRL, dl, RVT, SignBit, 200 DAG.getConstant(SizeDiff, 201 TLI.getShiftAmountTy(SignBit.getValueType()))); 202 SignBit = DAG.getNode(ISD::TRUNCATE, dl, LVT, SignBit); 203 } else if (SizeDiff < 0) { 204 SignBit = DAG.getNode(ISD::ANY_EXTEND, dl, LVT, SignBit); 205 SignBit = DAG.getNode(ISD::SHL, dl, LVT, SignBit, 206 DAG.getConstant(-SizeDiff, 207 TLI.getShiftAmountTy(SignBit.getValueType()))); 208 } 209 210 // Clear the sign bit of the first operand. 211 SDValue Mask = DAG.getNode(ISD::SHL, dl, LVT, DAG.getConstant(1, LVT), 212 DAG.getConstant(LSize - 1, 213 TLI.getShiftAmountTy(LVT))); 214 Mask = DAG.getNode(ISD::SUB, dl, LVT, Mask, DAG.getConstant(1, LVT)); 215 LHS = DAG.getNode(ISD::AND, dl, LVT, LHS, Mask); 216 217 // Or the value with the sign bit. 218 return DAG.getNode(ISD::OR, dl, LVT, LHS, SignBit); 219} 220 221SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) { 222 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 223 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 224 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 225 RTLIB::COS_F32, 226 RTLIB::COS_F64, 227 RTLIB::COS_F80, 228 RTLIB::COS_F128, 229 RTLIB::COS_PPCF128), 230 NVT, &Op, 1, false, SDLoc(N)).first; 231} 232 233SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) { 234 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 235 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 236 GetSoftenedFloat(N->getOperand(1)) }; 237 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 238 RTLIB::DIV_F32, 239 RTLIB::DIV_F64, 240 RTLIB::DIV_F80, 241 RTLIB::DIV_F128, 242 RTLIB::DIV_PPCF128), 243 NVT, Ops, 2, false, SDLoc(N)).first; 244} 245 246SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) { 247 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 248 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 249 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 250 RTLIB::EXP_F32, 251 RTLIB::EXP_F64, 252 RTLIB::EXP_F80, 253 RTLIB::EXP_F128, 254 RTLIB::EXP_PPCF128), 255 NVT, &Op, 1, false, SDLoc(N)).first; 256} 257 258SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) { 259 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 260 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 261 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 262 RTLIB::EXP2_F32, 263 RTLIB::EXP2_F64, 264 RTLIB::EXP2_F80, 265 RTLIB::EXP2_F128, 266 RTLIB::EXP2_PPCF128), 267 NVT, &Op, 1, false, SDLoc(N)).first; 268} 269 270SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) { 271 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 272 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 273 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 274 RTLIB::FLOOR_F32, 275 RTLIB::FLOOR_F64, 276 RTLIB::FLOOR_F80, 277 RTLIB::FLOOR_F128, 278 RTLIB::FLOOR_PPCF128), 279 NVT, &Op, 1, false, SDLoc(N)).first; 280} 281 282SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) { 283 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 284 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 285 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 286 RTLIB::LOG_F32, 287 RTLIB::LOG_F64, 288 RTLIB::LOG_F80, 289 RTLIB::LOG_F128, 290 RTLIB::LOG_PPCF128), 291 NVT, &Op, 1, false, SDLoc(N)).first; 292} 293 294SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) { 295 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 296 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 297 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 298 RTLIB::LOG2_F32, 299 RTLIB::LOG2_F64, 300 RTLIB::LOG2_F80, 301 RTLIB::LOG2_F128, 302 RTLIB::LOG2_PPCF128), 303 NVT, &Op, 1, false, SDLoc(N)).first; 304} 305 306SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) { 307 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 308 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 309 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 310 RTLIB::LOG10_F32, 311 RTLIB::LOG10_F64, 312 RTLIB::LOG10_F80, 313 RTLIB::LOG10_F128, 314 RTLIB::LOG10_PPCF128), 315 NVT, &Op, 1, false, SDLoc(N)).first; 316} 317 318SDValue DAGTypeLegalizer::SoftenFloatRes_FMA(SDNode *N) { 319 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 320 SDValue Ops[3] = { GetSoftenedFloat(N->getOperand(0)), 321 GetSoftenedFloat(N->getOperand(1)), 322 GetSoftenedFloat(N->getOperand(2)) }; 323 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 324 RTLIB::FMA_F32, 325 RTLIB::FMA_F64, 326 RTLIB::FMA_F80, 327 RTLIB::FMA_F128, 328 RTLIB::FMA_PPCF128), 329 NVT, Ops, 3, false, SDLoc(N)).first; 330} 331 332SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) { 333 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 334 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 335 GetSoftenedFloat(N->getOperand(1)) }; 336 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 337 RTLIB::MUL_F32, 338 RTLIB::MUL_F64, 339 RTLIB::MUL_F80, 340 RTLIB::MUL_F128, 341 RTLIB::MUL_PPCF128), 342 NVT, Ops, 2, false, SDLoc(N)).first; 343} 344 345SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) { 346 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 347 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 348 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 349 RTLIB::NEARBYINT_F32, 350 RTLIB::NEARBYINT_F64, 351 RTLIB::NEARBYINT_F80, 352 RTLIB::NEARBYINT_F128, 353 RTLIB::NEARBYINT_PPCF128), 354 NVT, &Op, 1, false, SDLoc(N)).first; 355} 356 357SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) { 358 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 359 // Expand Y = FNEG(X) -> Y = SUB -0.0, X 360 SDValue Ops[2] = { DAG.getConstantFP(-0.0, N->getValueType(0)), 361 GetSoftenedFloat(N->getOperand(0)) }; 362 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 363 RTLIB::SUB_F32, 364 RTLIB::SUB_F64, 365 RTLIB::SUB_F80, 366 RTLIB::SUB_F128, 367 RTLIB::SUB_PPCF128), 368 NVT, Ops, 2, false, SDLoc(N)).first; 369} 370 371SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) { 372 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 373 SDValue Op = N->getOperand(0); 374 RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0)); 375 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!"); 376 return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)).first; 377} 378 379// FIXME: Should we just use 'normal' FP_EXTEND / FP_TRUNC instead of special 380// nodes? 381SDValue DAGTypeLegalizer::SoftenFloatRes_FP16_TO_FP32(SDNode *N) { 382 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 383 SDValue Op = N->getOperand(0); 384 return TLI.makeLibCall(DAG, RTLIB::FPEXT_F16_F32, NVT, &Op, 1, false, 385 SDLoc(N)).first; 386} 387 388SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) { 389 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 390 SDValue Op = N->getOperand(0); 391 RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0)); 392 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!"); 393 return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)).first; 394} 395 396SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) { 397 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 398 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 399 GetSoftenedFloat(N->getOperand(1)) }; 400 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 401 RTLIB::POW_F32, 402 RTLIB::POW_F64, 403 RTLIB::POW_F80, 404 RTLIB::POW_F128, 405 RTLIB::POW_PPCF128), 406 NVT, Ops, 2, false, SDLoc(N)).first; 407} 408 409SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) { 410 assert(N->getOperand(1).getValueType() == MVT::i32 && 411 "Unsupported power type!"); 412 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 413 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) }; 414 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 415 RTLIB::POWI_F32, 416 RTLIB::POWI_F64, 417 RTLIB::POWI_F80, 418 RTLIB::POWI_F128, 419 RTLIB::POWI_PPCF128), 420 NVT, Ops, 2, false, SDLoc(N)).first; 421} 422 423SDValue DAGTypeLegalizer::SoftenFloatRes_FREM(SDNode *N) { 424 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 425 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 426 GetSoftenedFloat(N->getOperand(1)) }; 427 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 428 RTLIB::REM_F32, 429 RTLIB::REM_F64, 430 RTLIB::REM_F80, 431 RTLIB::REM_F128, 432 RTLIB::REM_PPCF128), 433 NVT, Ops, 2, false, SDLoc(N)).first; 434} 435 436SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) { 437 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 438 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 439 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 440 RTLIB::RINT_F32, 441 RTLIB::RINT_F64, 442 RTLIB::RINT_F80, 443 RTLIB::RINT_F128, 444 RTLIB::RINT_PPCF128), 445 NVT, &Op, 1, false, SDLoc(N)).first; 446} 447 448SDValue DAGTypeLegalizer::SoftenFloatRes_FROUND(SDNode *N) { 449 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 450 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 451 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 452 RTLIB::ROUND_F32, 453 RTLIB::ROUND_F64, 454 RTLIB::ROUND_F80, 455 RTLIB::ROUND_F128, 456 RTLIB::ROUND_PPCF128), 457 NVT, &Op, 1, false, SDLoc(N)).first; 458} 459 460SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) { 461 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 462 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 463 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 464 RTLIB::SIN_F32, 465 RTLIB::SIN_F64, 466 RTLIB::SIN_F80, 467 RTLIB::SIN_F128, 468 RTLIB::SIN_PPCF128), 469 NVT, &Op, 1, false, SDLoc(N)).first; 470} 471 472SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) { 473 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 474 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 475 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 476 RTLIB::SQRT_F32, 477 RTLIB::SQRT_F64, 478 RTLIB::SQRT_F80, 479 RTLIB::SQRT_F128, 480 RTLIB::SQRT_PPCF128), 481 NVT, &Op, 1, false, SDLoc(N)).first; 482} 483 484SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) { 485 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 486 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 487 GetSoftenedFloat(N->getOperand(1)) }; 488 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 489 RTLIB::SUB_F32, 490 RTLIB::SUB_F64, 491 RTLIB::SUB_F80, 492 RTLIB::SUB_F128, 493 RTLIB::SUB_PPCF128), 494 NVT, Ops, 2, false, SDLoc(N)).first; 495} 496 497SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) { 498 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 499 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 500 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 501 RTLIB::TRUNC_F32, 502 RTLIB::TRUNC_F64, 503 RTLIB::TRUNC_F80, 504 RTLIB::TRUNC_F128, 505 RTLIB::TRUNC_PPCF128), 506 NVT, &Op, 1, false, SDLoc(N)).first; 507} 508 509SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) { 510 LoadSDNode *L = cast<LoadSDNode>(N); 511 EVT VT = N->getValueType(0); 512 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 513 SDLoc dl(N); 514 515 SDValue NewL; 516 if (L->getExtensionType() == ISD::NON_EXTLOAD) { 517 NewL = DAG.getLoad(L->getAddressingMode(), L->getExtensionType(), 518 NVT, dl, L->getChain(), L->getBasePtr(), L->getOffset(), 519 L->getPointerInfo(), NVT, L->isVolatile(), 520 L->isNonTemporal(), false, L->getAlignment(), 521 L->getTBAAInfo()); 522 // Legalized the chain result - switch anything that used the old chain to 523 // use the new one. 524 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1)); 525 return NewL; 526 } 527 528 // Do a non-extending load followed by FP_EXTEND. 529 NewL = DAG.getLoad(L->getAddressingMode(), ISD::NON_EXTLOAD, 530 L->getMemoryVT(), dl, L->getChain(), 531 L->getBasePtr(), L->getOffset(), L->getPointerInfo(), 532 L->getMemoryVT(), L->isVolatile(), 533 L->isNonTemporal(), false, L->getAlignment(), 534 L->getTBAAInfo()); 535 // Legalized the chain result - switch anything that used the old chain to 536 // use the new one. 537 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1)); 538 return BitConvertToInteger(DAG.getNode(ISD::FP_EXTEND, dl, VT, NewL)); 539} 540 541SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N) { 542 SDValue LHS = GetSoftenedFloat(N->getOperand(1)); 543 SDValue RHS = GetSoftenedFloat(N->getOperand(2)); 544 return DAG.getSelect(SDLoc(N), 545 LHS.getValueType(), N->getOperand(0), LHS, RHS); 546} 547 548SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT_CC(SDNode *N) { 549 SDValue LHS = GetSoftenedFloat(N->getOperand(2)); 550 SDValue RHS = GetSoftenedFloat(N->getOperand(3)); 551 return DAG.getNode(ISD::SELECT_CC, SDLoc(N), 552 LHS.getValueType(), N->getOperand(0), 553 N->getOperand(1), LHS, RHS, N->getOperand(4)); 554} 555 556SDValue DAGTypeLegalizer::SoftenFloatRes_UNDEF(SDNode *N) { 557 return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(), 558 N->getValueType(0))); 559} 560 561SDValue DAGTypeLegalizer::SoftenFloatRes_VAARG(SDNode *N) { 562 SDValue Chain = N->getOperand(0); // Get the chain. 563 SDValue Ptr = N->getOperand(1); // Get the pointer. 564 EVT VT = N->getValueType(0); 565 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 566 SDLoc dl(N); 567 568 SDValue NewVAARG; 569 NewVAARG = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2), 570 N->getConstantOperandVal(3)); 571 572 // Legalized the chain result - switch anything that used the old chain to 573 // use the new one. 574 ReplaceValueWith(SDValue(N, 1), NewVAARG.getValue(1)); 575 return NewVAARG; 576} 577 578SDValue DAGTypeLegalizer::SoftenFloatRes_XINT_TO_FP(SDNode *N) { 579 bool Signed = N->getOpcode() == ISD::SINT_TO_FP; 580 EVT SVT = N->getOperand(0).getValueType(); 581 EVT RVT = N->getValueType(0); 582 EVT NVT = EVT(); 583 SDLoc dl(N); 584 585 // If the input is not legal, eg: i1 -> fp, then it needs to be promoted to 586 // a larger type, eg: i8 -> fp. Even if it is legal, no libcall may exactly 587 // match. Look for an appropriate libcall. 588 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 589 for (unsigned t = MVT::FIRST_INTEGER_VALUETYPE; 590 t <= MVT::LAST_INTEGER_VALUETYPE && LC == RTLIB::UNKNOWN_LIBCALL; ++t) { 591 NVT = (MVT::SimpleValueType)t; 592 // The source needs to big enough to hold the operand. 593 if (NVT.bitsGE(SVT)) 594 LC = Signed ? RTLIB::getSINTTOFP(NVT, RVT):RTLIB::getUINTTOFP (NVT, RVT); 595 } 596 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!"); 597 598 // Sign/zero extend the argument if the libcall takes a larger type. 599 SDValue Op = DAG.getNode(Signed ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl, 600 NVT, N->getOperand(0)); 601 return TLI.makeLibCall(DAG, LC, 602 TLI.getTypeToTransformTo(*DAG.getContext(), RVT), 603 &Op, 1, false, dl).first; 604} 605 606 607//===----------------------------------------------------------------------===// 608// Operand Float to Integer Conversion.. 609//===----------------------------------------------------------------------===// 610 611bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) { 612 DEBUG(dbgs() << "Soften float operand " << OpNo << ": "; N->dump(&DAG); 613 dbgs() << "\n"); 614 SDValue Res = SDValue(); 615 616 switch (N->getOpcode()) { 617 default: 618#ifndef NDEBUG 619 dbgs() << "SoftenFloatOperand Op #" << OpNo << ": "; 620 N->dump(&DAG); dbgs() << "\n"; 621#endif 622 llvm_unreachable("Do not know how to soften this operator's operand!"); 623 624 case ISD::BITCAST: Res = SoftenFloatOp_BITCAST(N); break; 625 case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break; 626 case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break; 627 case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break; 628 case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_UINT(N); break; 629 case ISD::FP32_TO_FP16:Res = SoftenFloatOp_FP32_TO_FP16(N); break; 630 case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break; 631 case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break; 632 case ISD::STORE: Res = SoftenFloatOp_STORE(N, OpNo); break; 633 } 634 635 // If the result is null, the sub-method took care of registering results etc. 636 if (!Res.getNode()) return false; 637 638 // If the result is N, the sub-method updated N in place. Tell the legalizer 639 // core about this. 640 if (Res.getNode() == N) 641 return true; 642 643 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 644 "Invalid operand expansion"); 645 646 ReplaceValueWith(SDValue(N, 0), Res); 647 return false; 648} 649 650SDValue DAGTypeLegalizer::SoftenFloatOp_BITCAST(SDNode *N) { 651 return DAG.getNode(ISD::BITCAST, SDLoc(N), N->getValueType(0), 652 GetSoftenedFloat(N->getOperand(0))); 653} 654 655SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) { 656 EVT SVT = N->getOperand(0).getValueType(); 657 EVT RVT = N->getValueType(0); 658 659 RTLIB::Libcall LC = RTLIB::getFPROUND(SVT, RVT); 660 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND libcall"); 661 662 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 663 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first; 664} 665 666SDValue DAGTypeLegalizer::SoftenFloatOp_BR_CC(SDNode *N) { 667 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); 668 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); 669 670 EVT VT = NewLHS.getValueType(); 671 NewLHS = GetSoftenedFloat(NewLHS); 672 NewRHS = GetSoftenedFloat(NewRHS); 673 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N)); 674 675 // If softenSetCCOperands returned a scalar, we need to compare the result 676 // against zero to select between true and false values. 677 if (NewRHS.getNode() == 0) { 678 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 679 CCCode = ISD::SETNE; 680 } 681 682 // Update N to have the operands specified. 683 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0), 684 DAG.getCondCode(CCCode), NewLHS, NewRHS, 685 N->getOperand(4)), 686 0); 687} 688 689SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_SINT(SDNode *N) { 690 EVT RVT = N->getValueType(0); 691 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT); 692 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!"); 693 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 694 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first; 695} 696 697SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) { 698 EVT RVT = N->getValueType(0); 699 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT); 700 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!"); 701 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 702 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first; 703} 704 705SDValue DAGTypeLegalizer::SoftenFloatOp_FP32_TO_FP16(SDNode *N) { 706 EVT RVT = N->getValueType(0); 707 RTLIB::Libcall LC = RTLIB::FPROUND_F32_F16; 708 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 709 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first; 710} 711 712SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) { 713 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 714 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); 715 716 EVT VT = NewLHS.getValueType(); 717 NewLHS = GetSoftenedFloat(NewLHS); 718 NewRHS = GetSoftenedFloat(NewRHS); 719 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N)); 720 721 // If softenSetCCOperands returned a scalar, we need to compare the result 722 // against zero to select between true and false values. 723 if (NewRHS.getNode() == 0) { 724 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 725 CCCode = ISD::SETNE; 726 } 727 728 // Update N to have the operands specified. 729 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 730 N->getOperand(2), N->getOperand(3), 731 DAG.getCondCode(CCCode)), 732 0); 733} 734 735SDValue DAGTypeLegalizer::SoftenFloatOp_SETCC(SDNode *N) { 736 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 737 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); 738 739 EVT VT = NewLHS.getValueType(); 740 NewLHS = GetSoftenedFloat(NewLHS); 741 NewRHS = GetSoftenedFloat(NewRHS); 742 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N)); 743 744 // If softenSetCCOperands returned a scalar, use it. 745 if (NewRHS.getNode() == 0) { 746 assert(NewLHS.getValueType() == N->getValueType(0) && 747 "Unexpected setcc expansion!"); 748 return NewLHS; 749 } 750 751 // Otherwise, update N to have the operands specified. 752 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 753 DAG.getCondCode(CCCode)), 754 0); 755} 756 757SDValue DAGTypeLegalizer::SoftenFloatOp_STORE(SDNode *N, unsigned OpNo) { 758 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 759 assert(OpNo == 1 && "Can only soften the stored value!"); 760 StoreSDNode *ST = cast<StoreSDNode>(N); 761 SDValue Val = ST->getValue(); 762 SDLoc dl(N); 763 764 if (ST->isTruncatingStore()) 765 // Do an FP_ROUND followed by a non-truncating store. 766 Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, dl, ST->getMemoryVT(), 767 Val, DAG.getIntPtrConstant(0))); 768 else 769 Val = GetSoftenedFloat(Val); 770 771 return DAG.getStore(ST->getChain(), dl, Val, ST->getBasePtr(), 772 ST->getMemOperand()); 773} 774 775 776//===----------------------------------------------------------------------===// 777// Float Result Expansion 778//===----------------------------------------------------------------------===// 779 780/// ExpandFloatResult - This method is called when the specified result of the 781/// specified node is found to need expansion. At this point, the node may also 782/// have invalid operands or may have other results that need promotion, we just 783/// know that (at least) one result needs expansion. 784void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) { 785 DEBUG(dbgs() << "Expand float result: "; N->dump(&DAG); dbgs() << "\n"); 786 SDValue Lo, Hi; 787 Lo = Hi = SDValue(); 788 789 // See if the target wants to custom expand this node. 790 if (CustomLowerNode(N, N->getValueType(ResNo), true)) 791 return; 792 793 switch (N->getOpcode()) { 794 default: 795#ifndef NDEBUG 796 dbgs() << "ExpandFloatResult #" << ResNo << ": "; 797 N->dump(&DAG); dbgs() << "\n"; 798#endif 799 llvm_unreachable("Do not know how to expand the result of this operator!"); 800 801 case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break; 802 case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break; 803 case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break; 804 805 case ISD::MERGE_VALUES: ExpandRes_MERGE_VALUES(N, ResNo, Lo, Hi); break; 806 case ISD::BITCAST: ExpandRes_BITCAST(N, Lo, Hi); break; 807 case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break; 808 case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break; 809 case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break; 810 case ISD::VAARG: ExpandRes_VAARG(N, Lo, Hi); break; 811 812 case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break; 813 case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break; 814 case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break; 815 case ISD::FCEIL: ExpandFloatRes_FCEIL(N, Lo, Hi); break; 816 case ISD::FCOPYSIGN: ExpandFloatRes_FCOPYSIGN(N, Lo, Hi); break; 817 case ISD::FCOS: ExpandFloatRes_FCOS(N, Lo, Hi); break; 818 case ISD::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break; 819 case ISD::FEXP: ExpandFloatRes_FEXP(N, Lo, Hi); break; 820 case ISD::FEXP2: ExpandFloatRes_FEXP2(N, Lo, Hi); break; 821 case ISD::FFLOOR: ExpandFloatRes_FFLOOR(N, Lo, Hi); break; 822 case ISD::FLOG: ExpandFloatRes_FLOG(N, Lo, Hi); break; 823 case ISD::FLOG2: ExpandFloatRes_FLOG2(N, Lo, Hi); break; 824 case ISD::FLOG10: ExpandFloatRes_FLOG10(N, Lo, Hi); break; 825 case ISD::FMA: ExpandFloatRes_FMA(N, Lo, Hi); break; 826 case ISD::FMUL: ExpandFloatRes_FMUL(N, Lo, Hi); break; 827 case ISD::FNEARBYINT: ExpandFloatRes_FNEARBYINT(N, Lo, Hi); break; 828 case ISD::FNEG: ExpandFloatRes_FNEG(N, Lo, Hi); break; 829 case ISD::FP_EXTEND: ExpandFloatRes_FP_EXTEND(N, Lo, Hi); break; 830 case ISD::FPOW: ExpandFloatRes_FPOW(N, Lo, Hi); break; 831 case ISD::FPOWI: ExpandFloatRes_FPOWI(N, Lo, Hi); break; 832 case ISD::FRINT: ExpandFloatRes_FRINT(N, Lo, Hi); break; 833 case ISD::FROUND: ExpandFloatRes_FROUND(N, Lo, Hi); break; 834 case ISD::FSIN: ExpandFloatRes_FSIN(N, Lo, Hi); break; 835 case ISD::FSQRT: ExpandFloatRes_FSQRT(N, Lo, Hi); break; 836 case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break; 837 case ISD::FTRUNC: ExpandFloatRes_FTRUNC(N, Lo, Hi); break; 838 case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break; 839 case ISD::SINT_TO_FP: 840 case ISD::UINT_TO_FP: ExpandFloatRes_XINT_TO_FP(N, Lo, Hi); break; 841 case ISD::FREM: ExpandFloatRes_FREM(N, Lo, Hi); break; 842 } 843 844 // If Lo/Hi is null, the sub-method took care of registering results etc. 845 if (Lo.getNode()) 846 SetExpandedFloat(SDValue(N, ResNo), Lo, Hi); 847} 848 849void DAGTypeLegalizer::ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, 850 SDValue &Hi) { 851 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 852 assert(NVT.getSizeInBits() == integerPartWidth && 853 "Do not know how to expand this float constant!"); 854 APInt C = cast<ConstantFPSDNode>(N)->getValueAPF().bitcastToAPInt(); 855 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 856 APInt(integerPartWidth, C.getRawData()[1])), 857 NVT); 858 Hi = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 859 APInt(integerPartWidth, C.getRawData()[0])), 860 NVT); 861} 862 863void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo, 864 SDValue &Hi) { 865 assert(N->getValueType(0) == MVT::ppcf128 && 866 "Logic only correct for ppcf128!"); 867 SDLoc dl(N); 868 SDValue Tmp; 869 GetExpandedFloat(N->getOperand(0), Lo, Tmp); 870 Hi = DAG.getNode(ISD::FABS, dl, Tmp.getValueType(), Tmp); 871 // Lo = Hi==fabs(Hi) ? Lo : -Lo; 872 Lo = DAG.getSelectCC(dl, Tmp, Hi, Lo, 873 DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo), 874 ISD::SETEQ); 875} 876 877void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo, 878 SDValue &Hi) { 879 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 880 RTLIB::ADD_F32, RTLIB::ADD_F64, 881 RTLIB::ADD_F80, RTLIB::ADD_F128, 882 RTLIB::ADD_PPCF128), 883 N, false); 884 GetPairElements(Call, Lo, Hi); 885} 886 887void DAGTypeLegalizer::ExpandFloatRes_FCEIL(SDNode *N, 888 SDValue &Lo, SDValue &Hi) { 889 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 890 RTLIB::CEIL_F32, RTLIB::CEIL_F64, 891 RTLIB::CEIL_F80, RTLIB::CEIL_F128, 892 RTLIB::CEIL_PPCF128), 893 N, false); 894 GetPairElements(Call, Lo, Hi); 895} 896 897void DAGTypeLegalizer::ExpandFloatRes_FCOPYSIGN(SDNode *N, 898 SDValue &Lo, SDValue &Hi) { 899 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 900 RTLIB::COPYSIGN_F32, 901 RTLIB::COPYSIGN_F64, 902 RTLIB::COPYSIGN_F80, 903 RTLIB::COPYSIGN_F128, 904 RTLIB::COPYSIGN_PPCF128), 905 N, false); 906 GetPairElements(Call, Lo, Hi); 907} 908 909void DAGTypeLegalizer::ExpandFloatRes_FCOS(SDNode *N, 910 SDValue &Lo, SDValue &Hi) { 911 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 912 RTLIB::COS_F32, RTLIB::COS_F64, 913 RTLIB::COS_F80, RTLIB::COS_F128, 914 RTLIB::COS_PPCF128), 915 N, false); 916 GetPairElements(Call, Lo, Hi); 917} 918 919void DAGTypeLegalizer::ExpandFloatRes_FDIV(SDNode *N, SDValue &Lo, 920 SDValue &Hi) { 921 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 922 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 923 RTLIB::DIV_F32, 924 RTLIB::DIV_F64, 925 RTLIB::DIV_F80, 926 RTLIB::DIV_F128, 927 RTLIB::DIV_PPCF128), 928 N->getValueType(0), Ops, 2, false, 929 SDLoc(N)).first; 930 GetPairElements(Call, Lo, Hi); 931} 932 933void DAGTypeLegalizer::ExpandFloatRes_FEXP(SDNode *N, 934 SDValue &Lo, SDValue &Hi) { 935 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 936 RTLIB::EXP_F32, RTLIB::EXP_F64, 937 RTLIB::EXP_F80, RTLIB::EXP_F128, 938 RTLIB::EXP_PPCF128), 939 N, false); 940 GetPairElements(Call, Lo, Hi); 941} 942 943void DAGTypeLegalizer::ExpandFloatRes_FEXP2(SDNode *N, 944 SDValue &Lo, SDValue &Hi) { 945 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 946 RTLIB::EXP2_F32, RTLIB::EXP2_F64, 947 RTLIB::EXP2_F80, RTLIB::EXP2_F128, 948 RTLIB::EXP2_PPCF128), 949 N, false); 950 GetPairElements(Call, Lo, Hi); 951} 952 953void DAGTypeLegalizer::ExpandFloatRes_FFLOOR(SDNode *N, 954 SDValue &Lo, SDValue &Hi) { 955 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 956 RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 957 RTLIB::FLOOR_F80, RTLIB::FLOOR_F128, 958 RTLIB::FLOOR_PPCF128), 959 N, false); 960 GetPairElements(Call, Lo, Hi); 961} 962 963void DAGTypeLegalizer::ExpandFloatRes_FLOG(SDNode *N, 964 SDValue &Lo, SDValue &Hi) { 965 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 966 RTLIB::LOG_F32, RTLIB::LOG_F64, 967 RTLIB::LOG_F80, RTLIB::LOG_F128, 968 RTLIB::LOG_PPCF128), 969 N, false); 970 GetPairElements(Call, Lo, Hi); 971} 972 973void DAGTypeLegalizer::ExpandFloatRes_FLOG2(SDNode *N, 974 SDValue &Lo, SDValue &Hi) { 975 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 976 RTLIB::LOG2_F32, RTLIB::LOG2_F64, 977 RTLIB::LOG2_F80, RTLIB::LOG2_F128, 978 RTLIB::LOG2_PPCF128), 979 N, false); 980 GetPairElements(Call, Lo, Hi); 981} 982 983void DAGTypeLegalizer::ExpandFloatRes_FLOG10(SDNode *N, 984 SDValue &Lo, SDValue &Hi) { 985 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 986 RTLIB::LOG10_F32, RTLIB::LOG10_F64, 987 RTLIB::LOG10_F80, RTLIB::LOG10_F128, 988 RTLIB::LOG10_PPCF128), 989 N, false); 990 GetPairElements(Call, Lo, Hi); 991} 992 993void DAGTypeLegalizer::ExpandFloatRes_FMA(SDNode *N, SDValue &Lo, 994 SDValue &Hi) { 995 SDValue Ops[3] = { N->getOperand(0), N->getOperand(1), N->getOperand(2) }; 996 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 997 RTLIB::FMA_F32, 998 RTLIB::FMA_F64, 999 RTLIB::FMA_F80, 1000 RTLIB::FMA_F128, 1001 RTLIB::FMA_PPCF128), 1002 N->getValueType(0), Ops, 3, false, 1003 SDLoc(N)).first; 1004 GetPairElements(Call, Lo, Hi); 1005} 1006 1007void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDValue &Lo, 1008 SDValue &Hi) { 1009 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1010 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 1011 RTLIB::MUL_F32, 1012 RTLIB::MUL_F64, 1013 RTLIB::MUL_F80, 1014 RTLIB::MUL_F128, 1015 RTLIB::MUL_PPCF128), 1016 N->getValueType(0), Ops, 2, false, 1017 SDLoc(N)).first; 1018 GetPairElements(Call, Lo, Hi); 1019} 1020 1021void DAGTypeLegalizer::ExpandFloatRes_FNEARBYINT(SDNode *N, 1022 SDValue &Lo, SDValue &Hi) { 1023 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1024 RTLIB::NEARBYINT_F32, 1025 RTLIB::NEARBYINT_F64, 1026 RTLIB::NEARBYINT_F80, 1027 RTLIB::NEARBYINT_F128, 1028 RTLIB::NEARBYINT_PPCF128), 1029 N, false); 1030 GetPairElements(Call, Lo, Hi); 1031} 1032 1033void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDValue &Lo, 1034 SDValue &Hi) { 1035 SDLoc dl(N); 1036 GetExpandedFloat(N->getOperand(0), Lo, Hi); 1037 Lo = DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo); 1038 Hi = DAG.getNode(ISD::FNEG, dl, Hi.getValueType(), Hi); 1039} 1040 1041void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo, 1042 SDValue &Hi) { 1043 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 1044 Hi = DAG.getNode(ISD::FP_EXTEND, SDLoc(N), NVT, N->getOperand(0)); 1045 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 1046 APInt(NVT.getSizeInBits(), 0)), NVT); 1047} 1048 1049void DAGTypeLegalizer::ExpandFloatRes_FPOW(SDNode *N, 1050 SDValue &Lo, SDValue &Hi) { 1051 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1052 RTLIB::POW_F32, RTLIB::POW_F64, 1053 RTLIB::POW_F80, RTLIB::POW_F128, 1054 RTLIB::POW_PPCF128), 1055 N, false); 1056 GetPairElements(Call, Lo, Hi); 1057} 1058 1059void DAGTypeLegalizer::ExpandFloatRes_FPOWI(SDNode *N, 1060 SDValue &Lo, SDValue &Hi) { 1061 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1062 RTLIB::POWI_F32, RTLIB::POWI_F64, 1063 RTLIB::POWI_F80, RTLIB::POWI_F128, 1064 RTLIB::POWI_PPCF128), 1065 N, false); 1066 GetPairElements(Call, Lo, Hi); 1067} 1068 1069void DAGTypeLegalizer::ExpandFloatRes_FREM(SDNode *N, 1070 SDValue &Lo, SDValue &Hi) { 1071 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1072 RTLIB::REM_F32, RTLIB::REM_F64, 1073 RTLIB::REM_F80, RTLIB::REM_F128, 1074 RTLIB::REM_PPCF128), 1075 N, false); 1076 GetPairElements(Call, Lo, Hi); 1077} 1078 1079void DAGTypeLegalizer::ExpandFloatRes_FRINT(SDNode *N, 1080 SDValue &Lo, SDValue &Hi) { 1081 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1082 RTLIB::RINT_F32, RTLIB::RINT_F64, 1083 RTLIB::RINT_F80, RTLIB::RINT_F128, 1084 RTLIB::RINT_PPCF128), 1085 N, false); 1086 GetPairElements(Call, Lo, Hi); 1087} 1088 1089void DAGTypeLegalizer::ExpandFloatRes_FROUND(SDNode *N, 1090 SDValue &Lo, SDValue &Hi) { 1091 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1092 RTLIB::ROUND_F32, 1093 RTLIB::ROUND_F64, 1094 RTLIB::ROUND_F80, 1095 RTLIB::ROUND_F128, 1096 RTLIB::ROUND_PPCF128), 1097 N, false); 1098 GetPairElements(Call, Lo, Hi); 1099} 1100 1101void DAGTypeLegalizer::ExpandFloatRes_FSIN(SDNode *N, 1102 SDValue &Lo, SDValue &Hi) { 1103 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1104 RTLIB::SIN_F32, RTLIB::SIN_F64, 1105 RTLIB::SIN_F80, RTLIB::SIN_F128, 1106 RTLIB::SIN_PPCF128), 1107 N, false); 1108 GetPairElements(Call, Lo, Hi); 1109} 1110 1111void DAGTypeLegalizer::ExpandFloatRes_FSQRT(SDNode *N, 1112 SDValue &Lo, SDValue &Hi) { 1113 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1114 RTLIB::SQRT_F32, RTLIB::SQRT_F64, 1115 RTLIB::SQRT_F80, RTLIB::SQRT_F128, 1116 RTLIB::SQRT_PPCF128), 1117 N, false); 1118 GetPairElements(Call, Lo, Hi); 1119} 1120 1121void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo, 1122 SDValue &Hi) { 1123 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1124 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 1125 RTLIB::SUB_F32, 1126 RTLIB::SUB_F64, 1127 RTLIB::SUB_F80, 1128 RTLIB::SUB_F128, 1129 RTLIB::SUB_PPCF128), 1130 N->getValueType(0), Ops, 2, false, 1131 SDLoc(N)).first; 1132 GetPairElements(Call, Lo, Hi); 1133} 1134 1135void DAGTypeLegalizer::ExpandFloatRes_FTRUNC(SDNode *N, 1136 SDValue &Lo, SDValue &Hi) { 1137 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1138 RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 1139 RTLIB::TRUNC_F80, RTLIB::TRUNC_F128, 1140 RTLIB::TRUNC_PPCF128), 1141 N, false); 1142 GetPairElements(Call, Lo, Hi); 1143} 1144 1145void DAGTypeLegalizer::ExpandFloatRes_LOAD(SDNode *N, SDValue &Lo, 1146 SDValue &Hi) { 1147 if (ISD::isNormalLoad(N)) { 1148 ExpandRes_NormalLoad(N, Lo, Hi); 1149 return; 1150 } 1151 1152 assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 1153 LoadSDNode *LD = cast<LoadSDNode>(N); 1154 SDValue Chain = LD->getChain(); 1155 SDValue Ptr = LD->getBasePtr(); 1156 SDLoc dl(N); 1157 1158 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), LD->getValueType(0)); 1159 assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1160 assert(LD->getMemoryVT().bitsLE(NVT) && "Float type not round?"); 1161 1162 Hi = DAG.getExtLoad(LD->getExtensionType(), dl, NVT, Chain, Ptr, 1163 LD->getMemoryVT(), LD->getMemOperand()); 1164 1165 // Remember the chain. 1166 Chain = Hi.getValue(1); 1167 1168 // The low part is zero. 1169 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 1170 APInt(NVT.getSizeInBits(), 0)), NVT); 1171 1172 // Modified the chain - switch anything that used the old chain to use the 1173 // new one. 1174 ReplaceValueWith(SDValue(LD, 1), Chain); 1175} 1176 1177void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, 1178 SDValue &Hi) { 1179 assert(N->getValueType(0) == MVT::ppcf128 && "Unsupported XINT_TO_FP!"); 1180 EVT VT = N->getValueType(0); 1181 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 1182 SDValue Src = N->getOperand(0); 1183 EVT SrcVT = Src.getValueType(); 1184 bool isSigned = N->getOpcode() == ISD::SINT_TO_FP; 1185 SDLoc dl(N); 1186 1187 // First do an SINT_TO_FP, whether the original was signed or unsigned. 1188 // When promoting partial word types to i32 we must honor the signedness, 1189 // though. 1190 if (SrcVT.bitsLE(MVT::i32)) { 1191 // The integer can be represented exactly in an f64. 1192 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl, 1193 MVT::i32, Src); 1194 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 1195 APInt(NVT.getSizeInBits(), 0)), NVT); 1196 Hi = DAG.getNode(ISD::SINT_TO_FP, dl, NVT, Src); 1197 } else { 1198 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 1199 if (SrcVT.bitsLE(MVT::i64)) { 1200 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl, 1201 MVT::i64, Src); 1202 LC = RTLIB::SINTTOFP_I64_PPCF128; 1203 } else if (SrcVT.bitsLE(MVT::i128)) { 1204 Src = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i128, Src); 1205 LC = RTLIB::SINTTOFP_I128_PPCF128; 1206 } 1207 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!"); 1208 1209 Hi = TLI.makeLibCall(DAG, LC, VT, &Src, 1, true, dl).first; 1210 GetPairElements(Hi, Lo, Hi); 1211 } 1212 1213 if (isSigned) 1214 return; 1215 1216 // Unsigned - fix up the SINT_TO_FP value just calculated. 1217 Hi = DAG.getNode(ISD::BUILD_PAIR, dl, VT, Lo, Hi); 1218 SrcVT = Src.getValueType(); 1219 1220 // x>=0 ? (ppcf128)(iN)x : (ppcf128)(iN)x + 2^N; N=32,64,128. 1221 static const uint64_t TwoE32[] = { 0x41f0000000000000LL, 0 }; 1222 static const uint64_t TwoE64[] = { 0x43f0000000000000LL, 0 }; 1223 static const uint64_t TwoE128[] = { 0x47f0000000000000LL, 0 }; 1224 ArrayRef<uint64_t> Parts; 1225 1226 switch (SrcVT.getSimpleVT().SimpleTy) { 1227 default: 1228 llvm_unreachable("Unsupported UINT_TO_FP!"); 1229 case MVT::i32: 1230 Parts = TwoE32; 1231 break; 1232 case MVT::i64: 1233 Parts = TwoE64; 1234 break; 1235 case MVT::i128: 1236 Parts = TwoE128; 1237 break; 1238 } 1239 1240 Lo = DAG.getNode(ISD::FADD, dl, VT, Hi, 1241 DAG.getConstantFP(APFloat(APFloat::PPCDoubleDouble, 1242 APInt(128, Parts)), 1243 MVT::ppcf128)); 1244 Lo = DAG.getSelectCC(dl, Src, DAG.getConstant(0, SrcVT), 1245 Lo, Hi, ISD::SETLT); 1246 GetPairElements(Lo, Lo, Hi); 1247} 1248 1249 1250//===----------------------------------------------------------------------===// 1251// Float Operand Expansion 1252//===----------------------------------------------------------------------===// 1253 1254/// ExpandFloatOperand - This method is called when the specified operand of the 1255/// specified node is found to need expansion. At this point, all of the result 1256/// types of the node are known to be legal, but other operands of the node may 1257/// need promotion or expansion as well as the specified one. 1258bool DAGTypeLegalizer::ExpandFloatOperand(SDNode *N, unsigned OpNo) { 1259 DEBUG(dbgs() << "Expand float operand: "; N->dump(&DAG); dbgs() << "\n"); 1260 SDValue Res = SDValue(); 1261 1262 // See if the target wants to custom expand this node. 1263 if (CustomLowerNode(N, N->getOperand(OpNo).getValueType(), false)) 1264 return false; 1265 1266 switch (N->getOpcode()) { 1267 default: 1268#ifndef NDEBUG 1269 dbgs() << "ExpandFloatOperand Op #" << OpNo << ": "; 1270 N->dump(&DAG); dbgs() << "\n"; 1271#endif 1272 llvm_unreachable("Do not know how to expand this operator's operand!"); 1273 1274 case ISD::BITCAST: Res = ExpandOp_BITCAST(N); break; 1275 case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break; 1276 case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break; 1277 1278 case ISD::BR_CC: Res = ExpandFloatOp_BR_CC(N); break; 1279 case ISD::FCOPYSIGN: Res = ExpandFloatOp_FCOPYSIGN(N); break; 1280 case ISD::FP_ROUND: Res = ExpandFloatOp_FP_ROUND(N); break; 1281 case ISD::FP_TO_SINT: Res = ExpandFloatOp_FP_TO_SINT(N); break; 1282 case ISD::FP_TO_UINT: Res = ExpandFloatOp_FP_TO_UINT(N); break; 1283 case ISD::SELECT_CC: Res = ExpandFloatOp_SELECT_CC(N); break; 1284 case ISD::SETCC: Res = ExpandFloatOp_SETCC(N); break; 1285 case ISD::STORE: Res = ExpandFloatOp_STORE(cast<StoreSDNode>(N), 1286 OpNo); break; 1287 } 1288 1289 // If the result is null, the sub-method took care of registering results etc. 1290 if (!Res.getNode()) return false; 1291 1292 // If the result is N, the sub-method updated N in place. Tell the legalizer 1293 // core about this. 1294 if (Res.getNode() == N) 1295 return true; 1296 1297 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 1298 "Invalid operand expansion"); 1299 1300 ReplaceValueWith(SDValue(N, 0), Res); 1301 return false; 1302} 1303 1304/// FloatExpandSetCCOperands - Expand the operands of a comparison. This code 1305/// is shared among BR_CC, SELECT_CC, and SETCC handlers. 1306void DAGTypeLegalizer::FloatExpandSetCCOperands(SDValue &NewLHS, 1307 SDValue &NewRHS, 1308 ISD::CondCode &CCCode, 1309 SDLoc dl) { 1310 SDValue LHSLo, LHSHi, RHSLo, RHSHi; 1311 GetExpandedFloat(NewLHS, LHSLo, LHSHi); 1312 GetExpandedFloat(NewRHS, RHSLo, RHSHi); 1313 1314 assert(NewLHS.getValueType() == MVT::ppcf128 && "Unsupported setcc type!"); 1315 1316 // FIXME: This generated code sucks. We want to generate 1317 // FCMPU crN, hi1, hi2 1318 // BNE crN, L: 1319 // FCMPU crN, lo1, lo2 1320 // The following can be improved, but not that much. 1321 SDValue Tmp1, Tmp2, Tmp3; 1322 Tmp1 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()), 1323 LHSHi, RHSHi, ISD::SETOEQ); 1324 Tmp2 = DAG.getSetCC(dl, getSetCCResultType(LHSLo.getValueType()), 1325 LHSLo, RHSLo, CCCode); 1326 Tmp3 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2); 1327 Tmp1 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()), 1328 LHSHi, RHSHi, ISD::SETUNE); 1329 Tmp2 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()), 1330 LHSHi, RHSHi, CCCode); 1331 Tmp1 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2); 1332 NewLHS = DAG.getNode(ISD::OR, dl, Tmp1.getValueType(), Tmp1, Tmp3); 1333 NewRHS = SDValue(); // LHS is the result, not a compare. 1334} 1335 1336SDValue DAGTypeLegalizer::ExpandFloatOp_BR_CC(SDNode *N) { 1337 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); 1338 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); 1339 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N)); 1340 1341 // If ExpandSetCCOperands returned a scalar, we need to compare the result 1342 // against zero to select between true and false values. 1343 if (NewRHS.getNode() == 0) { 1344 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 1345 CCCode = ISD::SETNE; 1346 } 1347 1348 // Update N to have the operands specified. 1349 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0), 1350 DAG.getCondCode(CCCode), NewLHS, NewRHS, 1351 N->getOperand(4)), 0); 1352} 1353 1354SDValue DAGTypeLegalizer::ExpandFloatOp_FCOPYSIGN(SDNode *N) { 1355 assert(N->getOperand(1).getValueType() == MVT::ppcf128 && 1356 "Logic only correct for ppcf128!"); 1357 SDValue Lo, Hi; 1358 GetExpandedFloat(N->getOperand(1), Lo, Hi); 1359 // The ppcf128 value is providing only the sign; take it from the 1360 // higher-order double (which must have the larger magnitude). 1361 return DAG.getNode(ISD::FCOPYSIGN, SDLoc(N), 1362 N->getValueType(0), N->getOperand(0), Hi); 1363} 1364 1365SDValue DAGTypeLegalizer::ExpandFloatOp_FP_ROUND(SDNode *N) { 1366 assert(N->getOperand(0).getValueType() == MVT::ppcf128 && 1367 "Logic only correct for ppcf128!"); 1368 SDValue Lo, Hi; 1369 GetExpandedFloat(N->getOperand(0), Lo, Hi); 1370 // Round it the rest of the way (e.g. to f32) if needed. 1371 return DAG.getNode(ISD::FP_ROUND, SDLoc(N), 1372 N->getValueType(0), Hi, N->getOperand(1)); 1373} 1374 1375SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) { 1376 EVT RVT = N->getValueType(0); 1377 SDLoc dl(N); 1378 1379 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on 1380 // PPC (the libcall is not available). FIXME: Do this in a less hacky way. 1381 if (RVT == MVT::i32) { 1382 assert(N->getOperand(0).getValueType() == MVT::ppcf128 && 1383 "Logic only correct for ppcf128!"); 1384 SDValue Res = DAG.getNode(ISD::FP_ROUND_INREG, dl, MVT::ppcf128, 1385 N->getOperand(0), DAG.getValueType(MVT::f64)); 1386 Res = DAG.getNode(ISD::FP_ROUND, dl, MVT::f64, Res, 1387 DAG.getIntPtrConstant(1)); 1388 return DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, Res); 1389 } 1390 1391 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT); 1392 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!"); 1393 return TLI.makeLibCall(DAG, LC, RVT, &N->getOperand(0), 1, false, dl).first; 1394} 1395 1396SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) { 1397 EVT RVT = N->getValueType(0); 1398 SDLoc dl(N); 1399 1400 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on 1401 // PPC (the libcall is not available). FIXME: Do this in a less hacky way. 1402 if (RVT == MVT::i32) { 1403 assert(N->getOperand(0).getValueType() == MVT::ppcf128 && 1404 "Logic only correct for ppcf128!"); 1405 const uint64_t TwoE31[] = {0x41e0000000000000LL, 0}; 1406 APFloat APF = APFloat(APFloat::PPCDoubleDouble, APInt(128, TwoE31)); 1407 SDValue Tmp = DAG.getConstantFP(APF, MVT::ppcf128); 1408 // X>=2^31 ? (int)(X-2^31)+0x80000000 : (int)X 1409 // FIXME: generated code sucks. 1410 return DAG.getSelectCC(dl, N->getOperand(0), Tmp, 1411 DAG.getNode(ISD::ADD, dl, MVT::i32, 1412 DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, 1413 DAG.getNode(ISD::FSUB, dl, 1414 MVT::ppcf128, 1415 N->getOperand(0), 1416 Tmp)), 1417 DAG.getConstant(0x80000000, MVT::i32)), 1418 DAG.getNode(ISD::FP_TO_SINT, dl, 1419 MVT::i32, N->getOperand(0)), 1420 ISD::SETGE); 1421 } 1422 1423 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT); 1424 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!"); 1425 return TLI.makeLibCall(DAG, LC, N->getValueType(0), &N->getOperand(0), 1, 1426 false, dl).first; 1427} 1428 1429SDValue DAGTypeLegalizer::ExpandFloatOp_SELECT_CC(SDNode *N) { 1430 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 1431 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); 1432 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N)); 1433 1434 // If ExpandSetCCOperands returned a scalar, we need to compare the result 1435 // against zero to select between true and false values. 1436 if (NewRHS.getNode() == 0) { 1437 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 1438 CCCode = ISD::SETNE; 1439 } 1440 1441 // Update N to have the operands specified. 1442 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 1443 N->getOperand(2), N->getOperand(3), 1444 DAG.getCondCode(CCCode)), 0); 1445} 1446 1447SDValue DAGTypeLegalizer::ExpandFloatOp_SETCC(SDNode *N) { 1448 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 1449 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); 1450 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N)); 1451 1452 // If ExpandSetCCOperands returned a scalar, use it. 1453 if (NewRHS.getNode() == 0) { 1454 assert(NewLHS.getValueType() == N->getValueType(0) && 1455 "Unexpected setcc expansion!"); 1456 return NewLHS; 1457 } 1458 1459 // Otherwise, update N to have the operands specified. 1460 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 1461 DAG.getCondCode(CCCode)), 0); 1462} 1463 1464SDValue DAGTypeLegalizer::ExpandFloatOp_STORE(SDNode *N, unsigned OpNo) { 1465 if (ISD::isNormalStore(N)) 1466 return ExpandOp_NormalStore(N, OpNo); 1467 1468 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 1469 assert(OpNo == 1 && "Can only expand the stored value so far"); 1470 StoreSDNode *ST = cast<StoreSDNode>(N); 1471 1472 SDValue Chain = ST->getChain(); 1473 SDValue Ptr = ST->getBasePtr(); 1474 1475 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 1476 ST->getValue().getValueType()); 1477 assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1478 assert(ST->getMemoryVT().bitsLE(NVT) && "Float type not round?"); 1479 (void)NVT; 1480 1481 SDValue Lo, Hi; 1482 GetExpandedOp(ST->getValue(), Lo, Hi); 1483 1484 return DAG.getTruncStore(Chain, SDLoc(N), Hi, Ptr, 1485 ST->getMemoryVT(), ST->getMemOperand()); 1486} 1487