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_PPCF128) { 33 return 34 VT == MVT::f32 ? Call_F32 : 35 VT == MVT::f64 ? Call_F64 : 36 VT == MVT::f80 ? Call_F80 : 37 VT == MVT::ppcf128 ? Call_PPCF128 : 38 RTLIB::UNKNOWN_LIBCALL; 39} 40 41//===----------------------------------------------------------------------===// 42// Result Float to Integer Conversion. 43//===----------------------------------------------------------------------===// 44 45void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) { 46 DEBUG(dbgs() << "Soften float result " << ResNo << ": "; N->dump(&DAG); 47 dbgs() << "\n"); 48 SDValue R = SDValue(); 49 50 switch (N->getOpcode()) { 51 default: 52#ifndef NDEBUG 53 dbgs() << "SoftenFloatResult #" << ResNo << ": "; 54 N->dump(&DAG); dbgs() << "\n"; 55#endif 56 llvm_unreachable("Do not know how to soften the result of this operator!"); 57 58 case ISD::MERGE_VALUES:R = SoftenFloatRes_MERGE_VALUES(N, ResNo); break; 59 case ISD::BITCAST: R = SoftenFloatRes_BITCAST(N); break; 60 case ISD::BUILD_PAIR: R = SoftenFloatRes_BUILD_PAIR(N); break; 61 case ISD::ConstantFP: 62 R = SoftenFloatRes_ConstantFP(cast<ConstantFPSDNode>(N)); 63 break; 64 case ISD::EXTRACT_VECTOR_ELT: 65 R = SoftenFloatRes_EXTRACT_VECTOR_ELT(N); break; 66 case ISD::FABS: R = SoftenFloatRes_FABS(N); break; 67 case ISD::FADD: R = SoftenFloatRes_FADD(N); break; 68 case ISD::FCEIL: R = SoftenFloatRes_FCEIL(N); break; 69 case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break; 70 case ISD::FCOS: R = SoftenFloatRes_FCOS(N); break; 71 case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break; 72 case ISD::FEXP: R = SoftenFloatRes_FEXP(N); break; 73 case ISD::FEXP2: R = SoftenFloatRes_FEXP2(N); break; 74 case ISD::FFLOOR: R = SoftenFloatRes_FFLOOR(N); break; 75 case ISD::FLOG: R = SoftenFloatRes_FLOG(N); break; 76 case ISD::FLOG2: R = SoftenFloatRes_FLOG2(N); break; 77 case ISD::FLOG10: R = SoftenFloatRes_FLOG10(N); break; 78 case ISD::FMA: R = SoftenFloatRes_FMA(N); break; 79 case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break; 80 case ISD::FNEARBYINT: R = SoftenFloatRes_FNEARBYINT(N); break; 81 case ISD::FNEG: R = SoftenFloatRes_FNEG(N); break; 82 case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break; 83 case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break; 84 case ISD::FP16_TO_FP32:R = SoftenFloatRes_FP16_TO_FP32(N); break; 85 case ISD::FPOW: R = SoftenFloatRes_FPOW(N); break; 86 case ISD::FPOWI: R = SoftenFloatRes_FPOWI(N); break; 87 case ISD::FREM: R = SoftenFloatRes_FREM(N); break; 88 case ISD::FRINT: R = SoftenFloatRes_FRINT(N); break; 89 case ISD::FSIN: R = SoftenFloatRes_FSIN(N); break; 90 case ISD::FSQRT: R = SoftenFloatRes_FSQRT(N); break; 91 case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break; 92 case ISD::FTRUNC: R = SoftenFloatRes_FTRUNC(N); break; 93 case ISD::LOAD: R = SoftenFloatRes_LOAD(N); break; 94 case ISD::SELECT: R = SoftenFloatRes_SELECT(N); break; 95 case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N); break; 96 case ISD::SINT_TO_FP: 97 case ISD::UINT_TO_FP: R = SoftenFloatRes_XINT_TO_FP(N); break; 98 case ISD::UNDEF: R = SoftenFloatRes_UNDEF(N); break; 99 case ISD::VAARG: R = SoftenFloatRes_VAARG(N); break; 100 } 101 102 // If R is null, the sub-method took care of registering the result. 103 if (R.getNode()) 104 SetSoftenedFloat(SDValue(N, ResNo), R); 105} 106 107SDValue DAGTypeLegalizer::SoftenFloatRes_BITCAST(SDNode *N) { 108 return BitConvertToInteger(N->getOperand(0)); 109} 110 111SDValue DAGTypeLegalizer::SoftenFloatRes_MERGE_VALUES(SDNode *N, 112 unsigned ResNo) { 113 SDValue Op = DisintegrateMERGE_VALUES(N, ResNo); 114 return BitConvertToInteger(Op); 115} 116 117SDValue DAGTypeLegalizer::SoftenFloatRes_BUILD_PAIR(SDNode *N) { 118 // Convert the inputs to integers, and build a new pair out of them. 119 return DAG.getNode(ISD::BUILD_PAIR, N->getDebugLoc(), 120 TLI.getTypeToTransformTo(*DAG.getContext(), 121 N->getValueType(0)), 122 BitConvertToInteger(N->getOperand(0)), 123 BitConvertToInteger(N->getOperand(1))); 124} 125 126SDValue DAGTypeLegalizer::SoftenFloatRes_ConstantFP(ConstantFPSDNode *N) { 127 return DAG.getConstant(N->getValueAPF().bitcastToAPInt(), 128 TLI.getTypeToTransformTo(*DAG.getContext(), 129 N->getValueType(0))); 130} 131 132SDValue DAGTypeLegalizer::SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N) { 133 SDValue NewOp = BitConvertVectorToIntegerVector(N->getOperand(0)); 134 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, N->getDebugLoc(), 135 NewOp.getValueType().getVectorElementType(), 136 NewOp, N->getOperand(1)); 137} 138 139SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) { 140 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 141 unsigned Size = NVT.getSizeInBits(); 142 143 // Mask = ~(1 << (Size-1)) 144 APInt API = APInt::getAllOnesValue(Size); 145 API.clearBit(Size-1); 146 SDValue Mask = DAG.getConstant(API, NVT); 147 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 148 return DAG.getNode(ISD::AND, N->getDebugLoc(), NVT, Op, Mask); 149} 150 151SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) { 152 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 153 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 154 GetSoftenedFloat(N->getOperand(1)) }; 155 return MakeLibCall(GetFPLibCall(N->getValueType(0), 156 RTLIB::ADD_F32, 157 RTLIB::ADD_F64, 158 RTLIB::ADD_F80, 159 RTLIB::ADD_PPCF128), 160 NVT, Ops, 2, false, N->getDebugLoc()); 161} 162 163SDValue DAGTypeLegalizer::SoftenFloatRes_FCEIL(SDNode *N) { 164 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 165 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 166 return MakeLibCall(GetFPLibCall(N->getValueType(0), 167 RTLIB::CEIL_F32, 168 RTLIB::CEIL_F64, 169 RTLIB::CEIL_F80, 170 RTLIB::CEIL_PPCF128), 171 NVT, &Op, 1, false, N->getDebugLoc()); 172} 173 174SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) { 175 SDValue LHS = GetSoftenedFloat(N->getOperand(0)); 176 SDValue RHS = BitConvertToInteger(N->getOperand(1)); 177 DebugLoc dl = N->getDebugLoc(); 178 179 EVT LVT = LHS.getValueType(); 180 EVT RVT = RHS.getValueType(); 181 182 unsigned LSize = LVT.getSizeInBits(); 183 unsigned RSize = RVT.getSizeInBits(); 184 185 // First get the sign bit of second operand. 186 SDValue SignBit = DAG.getNode(ISD::SHL, dl, RVT, DAG.getConstant(1, RVT), 187 DAG.getConstant(RSize - 1, 188 TLI.getShiftAmountTy(RVT))); 189 SignBit = DAG.getNode(ISD::AND, dl, RVT, RHS, SignBit); 190 191 // Shift right or sign-extend it if the two operands have different types. 192 int SizeDiff = RVT.getSizeInBits() - LVT.getSizeInBits(); 193 if (SizeDiff > 0) { 194 SignBit = DAG.getNode(ISD::SRL, dl, RVT, SignBit, 195 DAG.getConstant(SizeDiff, 196 TLI.getShiftAmountTy(SignBit.getValueType()))); 197 SignBit = DAG.getNode(ISD::TRUNCATE, dl, LVT, SignBit); 198 } else if (SizeDiff < 0) { 199 SignBit = DAG.getNode(ISD::ANY_EXTEND, dl, LVT, SignBit); 200 SignBit = DAG.getNode(ISD::SHL, dl, LVT, SignBit, 201 DAG.getConstant(-SizeDiff, 202 TLI.getShiftAmountTy(SignBit.getValueType()))); 203 } 204 205 // Clear the sign bit of the first operand. 206 SDValue Mask = DAG.getNode(ISD::SHL, dl, LVT, DAG.getConstant(1, LVT), 207 DAG.getConstant(LSize - 1, 208 TLI.getShiftAmountTy(LVT))); 209 Mask = DAG.getNode(ISD::SUB, dl, LVT, Mask, DAG.getConstant(1, LVT)); 210 LHS = DAG.getNode(ISD::AND, dl, LVT, LHS, Mask); 211 212 // Or the value with the sign bit. 213 return DAG.getNode(ISD::OR, dl, LVT, LHS, SignBit); 214} 215 216SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) { 217 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 218 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 219 return MakeLibCall(GetFPLibCall(N->getValueType(0), 220 RTLIB::COS_F32, 221 RTLIB::COS_F64, 222 RTLIB::COS_F80, 223 RTLIB::COS_PPCF128), 224 NVT, &Op, 1, false, N->getDebugLoc()); 225} 226 227SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) { 228 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 229 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 230 GetSoftenedFloat(N->getOperand(1)) }; 231 return MakeLibCall(GetFPLibCall(N->getValueType(0), 232 RTLIB::DIV_F32, 233 RTLIB::DIV_F64, 234 RTLIB::DIV_F80, 235 RTLIB::DIV_PPCF128), 236 NVT, Ops, 2, false, N->getDebugLoc()); 237} 238 239SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) { 240 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 241 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 242 return MakeLibCall(GetFPLibCall(N->getValueType(0), 243 RTLIB::EXP_F32, 244 RTLIB::EXP_F64, 245 RTLIB::EXP_F80, 246 RTLIB::EXP_PPCF128), 247 NVT, &Op, 1, false, N->getDebugLoc()); 248} 249 250SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) { 251 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 252 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 253 return MakeLibCall(GetFPLibCall(N->getValueType(0), 254 RTLIB::EXP2_F32, 255 RTLIB::EXP2_F64, 256 RTLIB::EXP2_F80, 257 RTLIB::EXP2_PPCF128), 258 NVT, &Op, 1, false, N->getDebugLoc()); 259} 260 261SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) { 262 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 263 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 264 return MakeLibCall(GetFPLibCall(N->getValueType(0), 265 RTLIB::FLOOR_F32, 266 RTLIB::FLOOR_F64, 267 RTLIB::FLOOR_F80, 268 RTLIB::FLOOR_PPCF128), 269 NVT, &Op, 1, false, N->getDebugLoc()); 270} 271 272SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) { 273 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 274 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 275 return MakeLibCall(GetFPLibCall(N->getValueType(0), 276 RTLIB::LOG_F32, 277 RTLIB::LOG_F64, 278 RTLIB::LOG_F80, 279 RTLIB::LOG_PPCF128), 280 NVT, &Op, 1, false, N->getDebugLoc()); 281} 282 283SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) { 284 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 285 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 286 return MakeLibCall(GetFPLibCall(N->getValueType(0), 287 RTLIB::LOG2_F32, 288 RTLIB::LOG2_F64, 289 RTLIB::LOG2_F80, 290 RTLIB::LOG2_PPCF128), 291 NVT, &Op, 1, false, N->getDebugLoc()); 292} 293 294SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) { 295 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 296 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 297 return MakeLibCall(GetFPLibCall(N->getValueType(0), 298 RTLIB::LOG10_F32, 299 RTLIB::LOG10_F64, 300 RTLIB::LOG10_F80, 301 RTLIB::LOG10_PPCF128), 302 NVT, &Op, 1, false, N->getDebugLoc()); 303} 304 305SDValue DAGTypeLegalizer::SoftenFloatRes_FMA(SDNode *N) { 306 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 307 SDValue Ops[3] = { GetSoftenedFloat(N->getOperand(0)), 308 GetSoftenedFloat(N->getOperand(1)), 309 GetSoftenedFloat(N->getOperand(2)) }; 310 return MakeLibCall(GetFPLibCall(N->getValueType(0), 311 RTLIB::FMA_F32, 312 RTLIB::FMA_F64, 313 RTLIB::FMA_F80, 314 RTLIB::FMA_PPCF128), 315 NVT, Ops, 3, false, N->getDebugLoc()); 316} 317 318SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) { 319 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 320 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 321 GetSoftenedFloat(N->getOperand(1)) }; 322 return MakeLibCall(GetFPLibCall(N->getValueType(0), 323 RTLIB::MUL_F32, 324 RTLIB::MUL_F64, 325 RTLIB::MUL_F80, 326 RTLIB::MUL_PPCF128), 327 NVT, Ops, 2, false, N->getDebugLoc()); 328} 329 330SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) { 331 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 332 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 333 return MakeLibCall(GetFPLibCall(N->getValueType(0), 334 RTLIB::NEARBYINT_F32, 335 RTLIB::NEARBYINT_F64, 336 RTLIB::NEARBYINT_F80, 337 RTLIB::NEARBYINT_PPCF128), 338 NVT, &Op, 1, false, N->getDebugLoc()); 339} 340 341SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) { 342 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 343 // Expand Y = FNEG(X) -> Y = SUB -0.0, X 344 SDValue Ops[2] = { DAG.getConstantFP(-0.0, N->getValueType(0)), 345 GetSoftenedFloat(N->getOperand(0)) }; 346 return MakeLibCall(GetFPLibCall(N->getValueType(0), 347 RTLIB::SUB_F32, 348 RTLIB::SUB_F64, 349 RTLIB::SUB_F80, 350 RTLIB::SUB_PPCF128), 351 NVT, Ops, 2, false, N->getDebugLoc()); 352} 353 354SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) { 355 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 356 SDValue Op = N->getOperand(0); 357 RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0)); 358 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!"); 359 return MakeLibCall(LC, NVT, &Op, 1, false, N->getDebugLoc()); 360} 361 362// FIXME: Should we just use 'normal' FP_EXTEND / FP_TRUNC instead of special 363// nodes? 364SDValue DAGTypeLegalizer::SoftenFloatRes_FP16_TO_FP32(SDNode *N) { 365 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 366 SDValue Op = N->getOperand(0); 367 return MakeLibCall(RTLIB::FPEXT_F16_F32, NVT, &Op, 1, false, 368 N->getDebugLoc()); 369} 370 371SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) { 372 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 373 SDValue Op = N->getOperand(0); 374 RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0)); 375 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!"); 376 return MakeLibCall(LC, NVT, &Op, 1, false, N->getDebugLoc()); 377} 378 379SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) { 380 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 381 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 382 GetSoftenedFloat(N->getOperand(1)) }; 383 return MakeLibCall(GetFPLibCall(N->getValueType(0), 384 RTLIB::POW_F32, 385 RTLIB::POW_F64, 386 RTLIB::POW_F80, 387 RTLIB::POW_PPCF128), 388 NVT, Ops, 2, false, N->getDebugLoc()); 389} 390 391SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) { 392 assert(N->getOperand(1).getValueType() == MVT::i32 && 393 "Unsupported power type!"); 394 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 395 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) }; 396 return MakeLibCall(GetFPLibCall(N->getValueType(0), 397 RTLIB::POWI_F32, 398 RTLIB::POWI_F64, 399 RTLIB::POWI_F80, 400 RTLIB::POWI_PPCF128), 401 NVT, Ops, 2, false, N->getDebugLoc()); 402} 403 404SDValue DAGTypeLegalizer::SoftenFloatRes_FREM(SDNode *N) { 405 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 406 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 407 GetSoftenedFloat(N->getOperand(1)) }; 408 return MakeLibCall(GetFPLibCall(N->getValueType(0), 409 RTLIB::REM_F32, 410 RTLIB::REM_F64, 411 RTLIB::REM_F80, 412 RTLIB::REM_PPCF128), 413 NVT, Ops, 2, false, N->getDebugLoc()); 414} 415 416SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) { 417 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 418 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 419 return MakeLibCall(GetFPLibCall(N->getValueType(0), 420 RTLIB::RINT_F32, 421 RTLIB::RINT_F64, 422 RTLIB::RINT_F80, 423 RTLIB::RINT_PPCF128), 424 NVT, &Op, 1, false, N->getDebugLoc()); 425} 426 427SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) { 428 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 429 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 430 return MakeLibCall(GetFPLibCall(N->getValueType(0), 431 RTLIB::SIN_F32, 432 RTLIB::SIN_F64, 433 RTLIB::SIN_F80, 434 RTLIB::SIN_PPCF128), 435 NVT, &Op, 1, false, N->getDebugLoc()); 436} 437 438SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) { 439 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 440 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 441 return MakeLibCall(GetFPLibCall(N->getValueType(0), 442 RTLIB::SQRT_F32, 443 RTLIB::SQRT_F64, 444 RTLIB::SQRT_F80, 445 RTLIB::SQRT_PPCF128), 446 NVT, &Op, 1, false, N->getDebugLoc()); 447} 448 449SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) { 450 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 451 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 452 GetSoftenedFloat(N->getOperand(1)) }; 453 return MakeLibCall(GetFPLibCall(N->getValueType(0), 454 RTLIB::SUB_F32, 455 RTLIB::SUB_F64, 456 RTLIB::SUB_F80, 457 RTLIB::SUB_PPCF128), 458 NVT, Ops, 2, false, N->getDebugLoc()); 459} 460 461SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) { 462 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 463 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 464 return MakeLibCall(GetFPLibCall(N->getValueType(0), 465 RTLIB::TRUNC_F32, 466 RTLIB::TRUNC_F64, 467 RTLIB::TRUNC_F80, 468 RTLIB::TRUNC_PPCF128), 469 NVT, &Op, 1, false, N->getDebugLoc()); 470} 471 472SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) { 473 LoadSDNode *L = cast<LoadSDNode>(N); 474 EVT VT = N->getValueType(0); 475 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 476 DebugLoc dl = N->getDebugLoc(); 477 478 SDValue NewL; 479 if (L->getExtensionType() == ISD::NON_EXTLOAD) { 480 NewL = DAG.getLoad(L->getAddressingMode(), L->getExtensionType(), 481 NVT, dl, L->getChain(), L->getBasePtr(), L->getOffset(), 482 L->getPointerInfo(), NVT, L->isVolatile(), 483 L->isNonTemporal(), false, L->getAlignment()); 484 // Legalized the chain result - switch anything that used the old chain to 485 // use the new one. 486 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1)); 487 return NewL; 488 } 489 490 // Do a non-extending load followed by FP_EXTEND. 491 NewL = DAG.getLoad(L->getAddressingMode(), ISD::NON_EXTLOAD, 492 L->getMemoryVT(), dl, L->getChain(), 493 L->getBasePtr(), L->getOffset(), L->getPointerInfo(), 494 L->getMemoryVT(), L->isVolatile(), 495 L->isNonTemporal(), false, L->getAlignment()); 496 // Legalized the chain result - switch anything that used the old chain to 497 // use the new one. 498 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1)); 499 return BitConvertToInteger(DAG.getNode(ISD::FP_EXTEND, dl, VT, NewL)); 500} 501 502SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N) { 503 SDValue LHS = GetSoftenedFloat(N->getOperand(1)); 504 SDValue RHS = GetSoftenedFloat(N->getOperand(2)); 505 return DAG.getNode(ISD::SELECT, N->getDebugLoc(), 506 LHS.getValueType(), N->getOperand(0),LHS,RHS); 507} 508 509SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT_CC(SDNode *N) { 510 SDValue LHS = GetSoftenedFloat(N->getOperand(2)); 511 SDValue RHS = GetSoftenedFloat(N->getOperand(3)); 512 return DAG.getNode(ISD::SELECT_CC, N->getDebugLoc(), 513 LHS.getValueType(), N->getOperand(0), 514 N->getOperand(1), LHS, RHS, N->getOperand(4)); 515} 516 517SDValue DAGTypeLegalizer::SoftenFloatRes_UNDEF(SDNode *N) { 518 return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(), 519 N->getValueType(0))); 520} 521 522SDValue DAGTypeLegalizer::SoftenFloatRes_VAARG(SDNode *N) { 523 SDValue Chain = N->getOperand(0); // Get the chain. 524 SDValue Ptr = N->getOperand(1); // Get the pointer. 525 EVT VT = N->getValueType(0); 526 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 527 DebugLoc dl = N->getDebugLoc(); 528 529 SDValue NewVAARG; 530 NewVAARG = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2), 531 N->getConstantOperandVal(3)); 532 533 // Legalized the chain result - switch anything that used the old chain to 534 // use the new one. 535 ReplaceValueWith(SDValue(N, 1), NewVAARG.getValue(1)); 536 return NewVAARG; 537} 538 539SDValue DAGTypeLegalizer::SoftenFloatRes_XINT_TO_FP(SDNode *N) { 540 bool Signed = N->getOpcode() == ISD::SINT_TO_FP; 541 EVT SVT = N->getOperand(0).getValueType(); 542 EVT RVT = N->getValueType(0); 543 EVT NVT = EVT(); 544 DebugLoc dl = N->getDebugLoc(); 545 546 // If the input is not legal, eg: i1 -> fp, then it needs to be promoted to 547 // a larger type, eg: i8 -> fp. Even if it is legal, no libcall may exactly 548 // match. Look for an appropriate libcall. 549 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 550 for (unsigned t = MVT::FIRST_INTEGER_VALUETYPE; 551 t <= MVT::LAST_INTEGER_VALUETYPE && LC == RTLIB::UNKNOWN_LIBCALL; ++t) { 552 NVT = (MVT::SimpleValueType)t; 553 // The source needs to big enough to hold the operand. 554 if (NVT.bitsGE(SVT)) 555 LC = Signed ? RTLIB::getSINTTOFP(NVT, RVT):RTLIB::getUINTTOFP (NVT, RVT); 556 } 557 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!"); 558 559 // Sign/zero extend the argument if the libcall takes a larger type. 560 SDValue Op = DAG.getNode(Signed ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl, 561 NVT, N->getOperand(0)); 562 return MakeLibCall(LC, TLI.getTypeToTransformTo(*DAG.getContext(), RVT), 563 &Op, 1, false, dl); 564} 565 566 567//===----------------------------------------------------------------------===// 568// Operand Float to Integer Conversion.. 569//===----------------------------------------------------------------------===// 570 571bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) { 572 DEBUG(dbgs() << "Soften float operand " << OpNo << ": "; N->dump(&DAG); 573 dbgs() << "\n"); 574 SDValue Res = SDValue(); 575 576 switch (N->getOpcode()) { 577 default: 578#ifndef NDEBUG 579 dbgs() << "SoftenFloatOperand Op #" << OpNo << ": "; 580 N->dump(&DAG); dbgs() << "\n"; 581#endif 582 llvm_unreachable("Do not know how to soften this operator's operand!"); 583 584 case ISD::BITCAST: Res = SoftenFloatOp_BITCAST(N); break; 585 case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break; 586 case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break; 587 case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break; 588 case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_UINT(N); break; 589 case ISD::FP32_TO_FP16:Res = SoftenFloatOp_FP32_TO_FP16(N); break; 590 case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break; 591 case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break; 592 case ISD::STORE: Res = SoftenFloatOp_STORE(N, OpNo); break; 593 } 594 595 // If the result is null, the sub-method took care of registering results etc. 596 if (!Res.getNode()) return false; 597 598 // If the result is N, the sub-method updated N in place. Tell the legalizer 599 // core about this. 600 if (Res.getNode() == N) 601 return true; 602 603 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 604 "Invalid operand expansion"); 605 606 ReplaceValueWith(SDValue(N, 0), Res); 607 return false; 608} 609 610/// SoftenSetCCOperands - Soften the operands of a comparison. This code is 611/// shared among BR_CC, SELECT_CC, and SETCC handlers. 612void DAGTypeLegalizer::SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 613 ISD::CondCode &CCCode, DebugLoc dl) { 614 SDValue LHSInt = GetSoftenedFloat(NewLHS); 615 SDValue RHSInt = GetSoftenedFloat(NewRHS); 616 EVT VT = NewLHS.getValueType(); 617 618 assert((VT == MVT::f32 || VT == MVT::f64) && "Unsupported setcc type!"); 619 620 // Expand into one or more soft-fp libcall(s). 621 RTLIB::Libcall LC1 = RTLIB::UNKNOWN_LIBCALL, LC2 = RTLIB::UNKNOWN_LIBCALL; 622 switch (CCCode) { 623 case ISD::SETEQ: 624 case ISD::SETOEQ: 625 LC1 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : RTLIB::OEQ_F64; 626 break; 627 case ISD::SETNE: 628 case ISD::SETUNE: 629 LC1 = (VT == MVT::f32) ? RTLIB::UNE_F32 : RTLIB::UNE_F64; 630 break; 631 case ISD::SETGE: 632 case ISD::SETOGE: 633 LC1 = (VT == MVT::f32) ? RTLIB::OGE_F32 : RTLIB::OGE_F64; 634 break; 635 case ISD::SETLT: 636 case ISD::SETOLT: 637 LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64; 638 break; 639 case ISD::SETLE: 640 case ISD::SETOLE: 641 LC1 = (VT == MVT::f32) ? RTLIB::OLE_F32 : RTLIB::OLE_F64; 642 break; 643 case ISD::SETGT: 644 case ISD::SETOGT: 645 LC1 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64; 646 break; 647 case ISD::SETUO: 648 LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64; 649 break; 650 case ISD::SETO: 651 LC1 = (VT == MVT::f32) ? RTLIB::O_F32 : RTLIB::O_F64; 652 break; 653 default: 654 LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64; 655 switch (CCCode) { 656 case ISD::SETONE: 657 // SETONE = SETOLT | SETOGT 658 LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64; 659 // Fallthrough 660 case ISD::SETUGT: 661 LC2 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64; 662 break; 663 case ISD::SETUGE: 664 LC2 = (VT == MVT::f32) ? RTLIB::OGE_F32 : RTLIB::OGE_F64; 665 break; 666 case ISD::SETULT: 667 LC2 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64; 668 break; 669 case ISD::SETULE: 670 LC2 = (VT == MVT::f32) ? RTLIB::OLE_F32 : RTLIB::OLE_F64; 671 break; 672 case ISD::SETUEQ: 673 LC2 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : RTLIB::OEQ_F64; 674 break; 675 default: llvm_unreachable("Do not know how to soften this setcc!"); 676 } 677 } 678 679 // Use the target specific return value for comparions lib calls. 680 EVT RetVT = TLI.getCmpLibcallReturnType(); 681 SDValue Ops[2] = { LHSInt, RHSInt }; 682 NewLHS = MakeLibCall(LC1, RetVT, Ops, 2, false/*sign irrelevant*/, dl); 683 NewRHS = DAG.getConstant(0, RetVT); 684 CCCode = TLI.getCmpLibcallCC(LC1); 685 if (LC2 != RTLIB::UNKNOWN_LIBCALL) { 686 SDValue Tmp = DAG.getNode(ISD::SETCC, dl, TLI.getSetCCResultType(RetVT), 687 NewLHS, NewRHS, DAG.getCondCode(CCCode)); 688 NewLHS = MakeLibCall(LC2, RetVT, Ops, 2, false/*sign irrelevant*/, dl); 689 NewLHS = DAG.getNode(ISD::SETCC, dl, TLI.getSetCCResultType(RetVT), NewLHS, 690 NewRHS, DAG.getCondCode(TLI.getCmpLibcallCC(LC2))); 691 NewLHS = DAG.getNode(ISD::OR, dl, Tmp.getValueType(), Tmp, NewLHS); 692 NewRHS = SDValue(); 693 } 694} 695 696SDValue DAGTypeLegalizer::SoftenFloatOp_BITCAST(SDNode *N) { 697 return DAG.getNode(ISD::BITCAST, N->getDebugLoc(), N->getValueType(0), 698 GetSoftenedFloat(N->getOperand(0))); 699} 700 701SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) { 702 EVT SVT = N->getOperand(0).getValueType(); 703 EVT RVT = N->getValueType(0); 704 705 RTLIB::Libcall LC = RTLIB::getFPROUND(SVT, RVT); 706 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND libcall"); 707 708 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 709 return MakeLibCall(LC, RVT, &Op, 1, false, N->getDebugLoc()); 710} 711 712SDValue DAGTypeLegalizer::SoftenFloatOp_BR_CC(SDNode *N) { 713 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); 714 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); 715 SoftenSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc()); 716 717 // If SoftenSetCCOperands returned a scalar, we need to compare the result 718 // against zero to select between true and false values. 719 if (NewRHS.getNode() == 0) { 720 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 721 CCCode = ISD::SETNE; 722 } 723 724 // Update N to have the operands specified. 725 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0), 726 DAG.getCondCode(CCCode), NewLHS, NewRHS, 727 N->getOperand(4)), 728 0); 729} 730 731SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_SINT(SDNode *N) { 732 EVT RVT = N->getValueType(0); 733 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT); 734 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!"); 735 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 736 return MakeLibCall(LC, RVT, &Op, 1, false, N->getDebugLoc()); 737} 738 739SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) { 740 EVT RVT = N->getValueType(0); 741 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT); 742 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!"); 743 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 744 return MakeLibCall(LC, RVT, &Op, 1, false, N->getDebugLoc()); 745} 746 747SDValue DAGTypeLegalizer::SoftenFloatOp_FP32_TO_FP16(SDNode *N) { 748 EVT RVT = N->getValueType(0); 749 RTLIB::Libcall LC = RTLIB::FPROUND_F32_F16; 750 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 751 return MakeLibCall(LC, RVT, &Op, 1, false, N->getDebugLoc()); 752} 753 754SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) { 755 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 756 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); 757 SoftenSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc()); 758 759 // If SoftenSetCCOperands returned a scalar, we need to compare the result 760 // against zero to select between true and false values. 761 if (NewRHS.getNode() == 0) { 762 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 763 CCCode = ISD::SETNE; 764 } 765 766 // Update N to have the operands specified. 767 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 768 N->getOperand(2), N->getOperand(3), 769 DAG.getCondCode(CCCode)), 770 0); 771} 772 773SDValue DAGTypeLegalizer::SoftenFloatOp_SETCC(SDNode *N) { 774 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 775 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); 776 SoftenSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc()); 777 778 // If SoftenSetCCOperands returned a scalar, use it. 779 if (NewRHS.getNode() == 0) { 780 assert(NewLHS.getValueType() == N->getValueType(0) && 781 "Unexpected setcc expansion!"); 782 return NewLHS; 783 } 784 785 // Otherwise, update N to have the operands specified. 786 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 787 DAG.getCondCode(CCCode)), 788 0); 789} 790 791SDValue DAGTypeLegalizer::SoftenFloatOp_STORE(SDNode *N, unsigned OpNo) { 792 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 793 assert(OpNo == 1 && "Can only soften the stored value!"); 794 StoreSDNode *ST = cast<StoreSDNode>(N); 795 SDValue Val = ST->getValue(); 796 DebugLoc dl = N->getDebugLoc(); 797 798 if (ST->isTruncatingStore()) 799 // Do an FP_ROUND followed by a non-truncating store. 800 Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, dl, ST->getMemoryVT(), 801 Val, DAG.getIntPtrConstant(0))); 802 else 803 Val = GetSoftenedFloat(Val); 804 805 return DAG.getStore(ST->getChain(), dl, Val, ST->getBasePtr(), 806 ST->getPointerInfo(), 807 ST->isVolatile(), ST->isNonTemporal(), 808 ST->getAlignment()); 809} 810 811 812//===----------------------------------------------------------------------===// 813// Float Result Expansion 814//===----------------------------------------------------------------------===// 815 816/// ExpandFloatResult - This method is called when the specified result of the 817/// specified node is found to need expansion. At this point, the node may also 818/// have invalid operands or may have other results that need promotion, we just 819/// know that (at least) one result needs expansion. 820void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) { 821 DEBUG(dbgs() << "Expand float result: "; N->dump(&DAG); dbgs() << "\n"); 822 SDValue Lo, Hi; 823 Lo = Hi = SDValue(); 824 825 // See if the target wants to custom expand this node. 826 if (CustomLowerNode(N, N->getValueType(ResNo), true)) 827 return; 828 829 switch (N->getOpcode()) { 830 default: 831#ifndef NDEBUG 832 dbgs() << "ExpandFloatResult #" << ResNo << ": "; 833 N->dump(&DAG); dbgs() << "\n"; 834#endif 835 llvm_unreachable("Do not know how to expand the result of this operator!"); 836 837 case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break; 838 case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break; 839 case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break; 840 841 case ISD::MERGE_VALUES: ExpandRes_MERGE_VALUES(N, ResNo, Lo, Hi); break; 842 case ISD::BITCAST: ExpandRes_BITCAST(N, Lo, Hi); break; 843 case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break; 844 case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break; 845 case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break; 846 case ISD::VAARG: ExpandRes_VAARG(N, Lo, Hi); break; 847 848 case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break; 849 case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break; 850 case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break; 851 case ISD::FCEIL: ExpandFloatRes_FCEIL(N, Lo, Hi); break; 852 case ISD::FCOPYSIGN: ExpandFloatRes_FCOPYSIGN(N, Lo, Hi); break; 853 case ISD::FCOS: ExpandFloatRes_FCOS(N, Lo, Hi); break; 854 case ISD::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break; 855 case ISD::FEXP: ExpandFloatRes_FEXP(N, Lo, Hi); break; 856 case ISD::FEXP2: ExpandFloatRes_FEXP2(N, Lo, Hi); break; 857 case ISD::FFLOOR: ExpandFloatRes_FFLOOR(N, Lo, Hi); break; 858 case ISD::FLOG: ExpandFloatRes_FLOG(N, Lo, Hi); break; 859 case ISD::FLOG2: ExpandFloatRes_FLOG2(N, Lo, Hi); break; 860 case ISD::FLOG10: ExpandFloatRes_FLOG10(N, Lo, Hi); break; 861 case ISD::FMA: ExpandFloatRes_FMA(N, Lo, Hi); break; 862 case ISD::FMUL: ExpandFloatRes_FMUL(N, Lo, Hi); break; 863 case ISD::FNEARBYINT: ExpandFloatRes_FNEARBYINT(N, Lo, Hi); break; 864 case ISD::FNEG: ExpandFloatRes_FNEG(N, Lo, Hi); break; 865 case ISD::FP_EXTEND: ExpandFloatRes_FP_EXTEND(N, Lo, Hi); break; 866 case ISD::FPOW: ExpandFloatRes_FPOW(N, Lo, Hi); break; 867 case ISD::FPOWI: ExpandFloatRes_FPOWI(N, Lo, Hi); break; 868 case ISD::FRINT: ExpandFloatRes_FRINT(N, Lo, Hi); break; 869 case ISD::FSIN: ExpandFloatRes_FSIN(N, Lo, Hi); break; 870 case ISD::FSQRT: ExpandFloatRes_FSQRT(N, Lo, Hi); break; 871 case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break; 872 case ISD::FTRUNC: ExpandFloatRes_FTRUNC(N, Lo, Hi); break; 873 case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break; 874 case ISD::SINT_TO_FP: 875 case ISD::UINT_TO_FP: ExpandFloatRes_XINT_TO_FP(N, Lo, Hi); break; 876 } 877 878 // If Lo/Hi is null, the sub-method took care of registering results etc. 879 if (Lo.getNode()) 880 SetExpandedFloat(SDValue(N, ResNo), Lo, Hi); 881} 882 883void DAGTypeLegalizer::ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, 884 SDValue &Hi) { 885 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 886 assert(NVT.getSizeInBits() == integerPartWidth && 887 "Do not know how to expand this float constant!"); 888 APInt C = cast<ConstantFPSDNode>(N)->getValueAPF().bitcastToAPInt(); 889 Lo = DAG.getConstantFP(APFloat(APInt(integerPartWidth, C.getRawData()[1])), 890 NVT); 891 Hi = DAG.getConstantFP(APFloat(APInt(integerPartWidth, C.getRawData()[0])), 892 NVT); 893} 894 895void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo, 896 SDValue &Hi) { 897 assert(N->getValueType(0) == MVT::ppcf128 && 898 "Logic only correct for ppcf128!"); 899 DebugLoc dl = N->getDebugLoc(); 900 SDValue Tmp; 901 GetExpandedFloat(N->getOperand(0), Lo, Tmp); 902 Hi = DAG.getNode(ISD::FABS, dl, Tmp.getValueType(), Tmp); 903 // Lo = Hi==fabs(Hi) ? Lo : -Lo; 904 Lo = DAG.getNode(ISD::SELECT_CC, dl, Lo.getValueType(), Tmp, Hi, Lo, 905 DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo), 906 DAG.getCondCode(ISD::SETEQ)); 907} 908 909void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo, 910 SDValue &Hi) { 911 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 912 RTLIB::ADD_F32, RTLIB::ADD_F64, 913 RTLIB::ADD_F80, RTLIB::ADD_PPCF128), 914 N, false); 915 GetPairElements(Call, Lo, Hi); 916} 917 918void DAGTypeLegalizer::ExpandFloatRes_FCEIL(SDNode *N, 919 SDValue &Lo, SDValue &Hi) { 920 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 921 RTLIB::CEIL_F32, RTLIB::CEIL_F64, 922 RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128), 923 N, false); 924 GetPairElements(Call, Lo, Hi); 925} 926 927void DAGTypeLegalizer::ExpandFloatRes_FCOPYSIGN(SDNode *N, 928 SDValue &Lo, SDValue &Hi) { 929 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 930 RTLIB::COPYSIGN_F32, 931 RTLIB::COPYSIGN_F64, 932 RTLIB::COPYSIGN_F80, 933 RTLIB::COPYSIGN_PPCF128), 934 N, false); 935 GetPairElements(Call, Lo, Hi); 936} 937 938void DAGTypeLegalizer::ExpandFloatRes_FCOS(SDNode *N, 939 SDValue &Lo, SDValue &Hi) { 940 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 941 RTLIB::COS_F32, RTLIB::COS_F64, 942 RTLIB::COS_F80, RTLIB::COS_PPCF128), 943 N, false); 944 GetPairElements(Call, Lo, Hi); 945} 946 947void DAGTypeLegalizer::ExpandFloatRes_FDIV(SDNode *N, SDValue &Lo, 948 SDValue &Hi) { 949 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 950 SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0), 951 RTLIB::DIV_F32, 952 RTLIB::DIV_F64, 953 RTLIB::DIV_F80, 954 RTLIB::DIV_PPCF128), 955 N->getValueType(0), Ops, 2, false, 956 N->getDebugLoc()); 957 GetPairElements(Call, Lo, Hi); 958} 959 960void DAGTypeLegalizer::ExpandFloatRes_FEXP(SDNode *N, 961 SDValue &Lo, SDValue &Hi) { 962 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 963 RTLIB::EXP_F32, RTLIB::EXP_F64, 964 RTLIB::EXP_F80, RTLIB::EXP_PPCF128), 965 N, false); 966 GetPairElements(Call, Lo, Hi); 967} 968 969void DAGTypeLegalizer::ExpandFloatRes_FEXP2(SDNode *N, 970 SDValue &Lo, SDValue &Hi) { 971 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 972 RTLIB::EXP2_F32, RTLIB::EXP2_F64, 973 RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128), 974 N, false); 975 GetPairElements(Call, Lo, Hi); 976} 977 978void DAGTypeLegalizer::ExpandFloatRes_FFLOOR(SDNode *N, 979 SDValue &Lo, SDValue &Hi) { 980 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 981 RTLIB::FLOOR_F32,RTLIB::FLOOR_F64, 982 RTLIB::FLOOR_F80,RTLIB::FLOOR_PPCF128), 983 N, false); 984 GetPairElements(Call, Lo, Hi); 985} 986 987void DAGTypeLegalizer::ExpandFloatRes_FLOG(SDNode *N, 988 SDValue &Lo, SDValue &Hi) { 989 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 990 RTLIB::LOG_F32, RTLIB::LOG_F64, 991 RTLIB::LOG_F80, RTLIB::LOG_PPCF128), 992 N, false); 993 GetPairElements(Call, Lo, Hi); 994} 995 996void DAGTypeLegalizer::ExpandFloatRes_FLOG2(SDNode *N, 997 SDValue &Lo, SDValue &Hi) { 998 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 999 RTLIB::LOG2_F32, RTLIB::LOG2_F64, 1000 RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128), 1001 N, false); 1002 GetPairElements(Call, Lo, Hi); 1003} 1004 1005void DAGTypeLegalizer::ExpandFloatRes_FLOG10(SDNode *N, 1006 SDValue &Lo, SDValue &Hi) { 1007 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1008 RTLIB::LOG10_F32,RTLIB::LOG10_F64, 1009 RTLIB::LOG10_F80,RTLIB::LOG10_PPCF128), 1010 N, false); 1011 GetPairElements(Call, Lo, Hi); 1012} 1013 1014void DAGTypeLegalizer::ExpandFloatRes_FMA(SDNode *N, SDValue &Lo, 1015 SDValue &Hi) { 1016 SDValue Ops[3] = { N->getOperand(0), N->getOperand(1), N->getOperand(2) }; 1017 SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0), 1018 RTLIB::FMA_F32, 1019 RTLIB::FMA_F64, 1020 RTLIB::FMA_F80, 1021 RTLIB::FMA_PPCF128), 1022 N->getValueType(0), Ops, 3, false, 1023 N->getDebugLoc()); 1024 GetPairElements(Call, Lo, Hi); 1025} 1026 1027void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDValue &Lo, 1028 SDValue &Hi) { 1029 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1030 SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0), 1031 RTLIB::MUL_F32, 1032 RTLIB::MUL_F64, 1033 RTLIB::MUL_F80, 1034 RTLIB::MUL_PPCF128), 1035 N->getValueType(0), Ops, 2, false, 1036 N->getDebugLoc()); 1037 GetPairElements(Call, Lo, Hi); 1038} 1039 1040void DAGTypeLegalizer::ExpandFloatRes_FNEARBYINT(SDNode *N, 1041 SDValue &Lo, SDValue &Hi) { 1042 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1043 RTLIB::NEARBYINT_F32, 1044 RTLIB::NEARBYINT_F64, 1045 RTLIB::NEARBYINT_F80, 1046 RTLIB::NEARBYINT_PPCF128), 1047 N, false); 1048 GetPairElements(Call, Lo, Hi); 1049} 1050 1051void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDValue &Lo, 1052 SDValue &Hi) { 1053 DebugLoc dl = N->getDebugLoc(); 1054 GetExpandedFloat(N->getOperand(0), Lo, Hi); 1055 Lo = DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo); 1056 Hi = DAG.getNode(ISD::FNEG, dl, Hi.getValueType(), Hi); 1057} 1058 1059void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo, 1060 SDValue &Hi) { 1061 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 1062 Hi = DAG.getNode(ISD::FP_EXTEND, N->getDebugLoc(), NVT, N->getOperand(0)); 1063 Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT); 1064} 1065 1066void DAGTypeLegalizer::ExpandFloatRes_FPOW(SDNode *N, 1067 SDValue &Lo, SDValue &Hi) { 1068 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1069 RTLIB::POW_F32, RTLIB::POW_F64, 1070 RTLIB::POW_F80, RTLIB::POW_PPCF128), 1071 N, false); 1072 GetPairElements(Call, Lo, Hi); 1073} 1074 1075void DAGTypeLegalizer::ExpandFloatRes_FPOWI(SDNode *N, 1076 SDValue &Lo, SDValue &Hi) { 1077 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1078 RTLIB::POWI_F32, RTLIB::POWI_F64, 1079 RTLIB::POWI_F80, RTLIB::POWI_PPCF128), 1080 N, false); 1081 GetPairElements(Call, Lo, Hi); 1082} 1083 1084void DAGTypeLegalizer::ExpandFloatRes_FRINT(SDNode *N, 1085 SDValue &Lo, SDValue &Hi) { 1086 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1087 RTLIB::RINT_F32, RTLIB::RINT_F64, 1088 RTLIB::RINT_F80, RTLIB::RINT_PPCF128), 1089 N, false); 1090 GetPairElements(Call, Lo, Hi); 1091} 1092 1093void DAGTypeLegalizer::ExpandFloatRes_FSIN(SDNode *N, 1094 SDValue &Lo, SDValue &Hi) { 1095 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1096 RTLIB::SIN_F32, RTLIB::SIN_F64, 1097 RTLIB::SIN_F80, RTLIB::SIN_PPCF128), 1098 N, false); 1099 GetPairElements(Call, Lo, Hi); 1100} 1101 1102void DAGTypeLegalizer::ExpandFloatRes_FSQRT(SDNode *N, 1103 SDValue &Lo, SDValue &Hi) { 1104 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1105 RTLIB::SQRT_F32, RTLIB::SQRT_F64, 1106 RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128), 1107 N, false); 1108 GetPairElements(Call, Lo, Hi); 1109} 1110 1111void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo, 1112 SDValue &Hi) { 1113 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1114 SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0), 1115 RTLIB::SUB_F32, 1116 RTLIB::SUB_F64, 1117 RTLIB::SUB_F80, 1118 RTLIB::SUB_PPCF128), 1119 N->getValueType(0), Ops, 2, false, 1120 N->getDebugLoc()); 1121 GetPairElements(Call, Lo, Hi); 1122} 1123 1124void DAGTypeLegalizer::ExpandFloatRes_FTRUNC(SDNode *N, 1125 SDValue &Lo, SDValue &Hi) { 1126 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1127 RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 1128 RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128), 1129 N, false); 1130 GetPairElements(Call, Lo, Hi); 1131} 1132 1133void DAGTypeLegalizer::ExpandFloatRes_LOAD(SDNode *N, SDValue &Lo, 1134 SDValue &Hi) { 1135 if (ISD::isNormalLoad(N)) { 1136 ExpandRes_NormalLoad(N, Lo, Hi); 1137 return; 1138 } 1139 1140 assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 1141 LoadSDNode *LD = cast<LoadSDNode>(N); 1142 SDValue Chain = LD->getChain(); 1143 SDValue Ptr = LD->getBasePtr(); 1144 DebugLoc dl = N->getDebugLoc(); 1145 1146 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), LD->getValueType(0)); 1147 assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1148 assert(LD->getMemoryVT().bitsLE(NVT) && "Float type not round?"); 1149 1150 Hi = DAG.getExtLoad(LD->getExtensionType(), dl, NVT, Chain, Ptr, 1151 LD->getPointerInfo(), LD->getMemoryVT(), LD->isVolatile(), 1152 LD->isNonTemporal(), LD->getAlignment()); 1153 1154 // Remember the chain. 1155 Chain = Hi.getValue(1); 1156 1157 // The low part is zero. 1158 Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT); 1159 1160 // Modified the chain - switch anything that used the old chain to use the 1161 // new one. 1162 ReplaceValueWith(SDValue(LD, 1), Chain); 1163} 1164 1165void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, 1166 SDValue &Hi) { 1167 assert(N->getValueType(0) == MVT::ppcf128 && "Unsupported XINT_TO_FP!"); 1168 EVT VT = N->getValueType(0); 1169 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 1170 SDValue Src = N->getOperand(0); 1171 EVT SrcVT = Src.getValueType(); 1172 bool isSigned = N->getOpcode() == ISD::SINT_TO_FP; 1173 DebugLoc dl = N->getDebugLoc(); 1174 1175 // First do an SINT_TO_FP, whether the original was signed or unsigned. 1176 // When promoting partial word types to i32 we must honor the signedness, 1177 // though. 1178 if (SrcVT.bitsLE(MVT::i32)) { 1179 // The integer can be represented exactly in an f64. 1180 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl, 1181 MVT::i32, Src); 1182 Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT); 1183 Hi = DAG.getNode(ISD::SINT_TO_FP, dl, NVT, Src); 1184 } else { 1185 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 1186 if (SrcVT.bitsLE(MVT::i64)) { 1187 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl, 1188 MVT::i64, Src); 1189 LC = RTLIB::SINTTOFP_I64_PPCF128; 1190 } else if (SrcVT.bitsLE(MVT::i128)) { 1191 Src = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i128, Src); 1192 LC = RTLIB::SINTTOFP_I128_PPCF128; 1193 } 1194 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!"); 1195 1196 Hi = MakeLibCall(LC, VT, &Src, 1, true, dl); 1197 GetPairElements(Hi, Lo, Hi); 1198 } 1199 1200 if (isSigned) 1201 return; 1202 1203 // Unsigned - fix up the SINT_TO_FP value just calculated. 1204 Hi = DAG.getNode(ISD::BUILD_PAIR, dl, VT, Lo, Hi); 1205 SrcVT = Src.getValueType(); 1206 1207 // x>=0 ? (ppcf128)(iN)x : (ppcf128)(iN)x + 2^N; N=32,64,128. 1208 static const uint64_t TwoE32[] = { 0x41f0000000000000LL, 0 }; 1209 static const uint64_t TwoE64[] = { 0x43f0000000000000LL, 0 }; 1210 static const uint64_t TwoE128[] = { 0x47f0000000000000LL, 0 }; 1211 ArrayRef<uint64_t> Parts; 1212 1213 switch (SrcVT.getSimpleVT().SimpleTy) { 1214 default: 1215 llvm_unreachable("Unsupported UINT_TO_FP!"); 1216 case MVT::i32: 1217 Parts = TwoE32; 1218 break; 1219 case MVT::i64: 1220 Parts = TwoE64; 1221 break; 1222 case MVT::i128: 1223 Parts = TwoE128; 1224 break; 1225 } 1226 1227 Lo = DAG.getNode(ISD::FADD, dl, VT, Hi, 1228 DAG.getConstantFP(APFloat(APInt(128, Parts)), 1229 MVT::ppcf128)); 1230 Lo = DAG.getNode(ISD::SELECT_CC, dl, VT, Src, DAG.getConstant(0, SrcVT), 1231 Lo, Hi, DAG.getCondCode(ISD::SETLT)); 1232 GetPairElements(Lo, Lo, Hi); 1233} 1234 1235 1236//===----------------------------------------------------------------------===// 1237// Float Operand Expansion 1238//===----------------------------------------------------------------------===// 1239 1240/// ExpandFloatOperand - This method is called when the specified operand of the 1241/// specified node is found to need expansion. At this point, all of the result 1242/// types of the node are known to be legal, but other operands of the node may 1243/// need promotion or expansion as well as the specified one. 1244bool DAGTypeLegalizer::ExpandFloatOperand(SDNode *N, unsigned OpNo) { 1245 DEBUG(dbgs() << "Expand float operand: "; N->dump(&DAG); dbgs() << "\n"); 1246 SDValue Res = SDValue(); 1247 1248 if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType()) 1249 == TargetLowering::Custom) 1250 Res = TLI.LowerOperation(SDValue(N, 0), DAG); 1251 1252 if (Res.getNode() == 0) { 1253 switch (N->getOpcode()) { 1254 default: 1255 #ifndef NDEBUG 1256 dbgs() << "ExpandFloatOperand Op #" << OpNo << ": "; 1257 N->dump(&DAG); dbgs() << "\n"; 1258 #endif 1259 llvm_unreachable("Do not know how to expand this operator's operand!"); 1260 1261 case ISD::BITCAST: Res = ExpandOp_BITCAST(N); break; 1262 case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break; 1263 case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break; 1264 1265 case ISD::BR_CC: Res = ExpandFloatOp_BR_CC(N); break; 1266 case ISD::FP_ROUND: Res = ExpandFloatOp_FP_ROUND(N); break; 1267 case ISD::FP_TO_SINT: Res = ExpandFloatOp_FP_TO_SINT(N); break; 1268 case ISD::FP_TO_UINT: Res = ExpandFloatOp_FP_TO_UINT(N); break; 1269 case ISD::SELECT_CC: Res = ExpandFloatOp_SELECT_CC(N); break; 1270 case ISD::SETCC: Res = ExpandFloatOp_SETCC(N); break; 1271 case ISD::STORE: Res = ExpandFloatOp_STORE(cast<StoreSDNode>(N), 1272 OpNo); break; 1273 } 1274 } 1275 1276 // If the result is null, the sub-method took care of registering results etc. 1277 if (!Res.getNode()) return false; 1278 1279 // If the result is N, the sub-method updated N in place. Tell the legalizer 1280 // core about this. 1281 if (Res.getNode() == N) 1282 return true; 1283 1284 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 1285 "Invalid operand expansion"); 1286 1287 ReplaceValueWith(SDValue(N, 0), Res); 1288 return false; 1289} 1290 1291/// FloatExpandSetCCOperands - Expand the operands of a comparison. This code 1292/// is shared among BR_CC, SELECT_CC, and SETCC handlers. 1293void DAGTypeLegalizer::FloatExpandSetCCOperands(SDValue &NewLHS, 1294 SDValue &NewRHS, 1295 ISD::CondCode &CCCode, 1296 DebugLoc dl) { 1297 SDValue LHSLo, LHSHi, RHSLo, RHSHi; 1298 GetExpandedFloat(NewLHS, LHSLo, LHSHi); 1299 GetExpandedFloat(NewRHS, RHSLo, RHSHi); 1300 1301 assert(NewLHS.getValueType() == MVT::ppcf128 && "Unsupported setcc type!"); 1302 1303 // FIXME: This generated code sucks. We want to generate 1304 // FCMPU crN, hi1, hi2 1305 // BNE crN, L: 1306 // FCMPU crN, lo1, lo2 1307 // The following can be improved, but not that much. 1308 SDValue Tmp1, Tmp2, Tmp3; 1309 Tmp1 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSHi.getValueType()), 1310 LHSHi, RHSHi, ISD::SETOEQ); 1311 Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSLo.getValueType()), 1312 LHSLo, RHSLo, CCCode); 1313 Tmp3 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2); 1314 Tmp1 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSHi.getValueType()), 1315 LHSHi, RHSHi, ISD::SETUNE); 1316 Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSHi.getValueType()), 1317 LHSHi, RHSHi, CCCode); 1318 Tmp1 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2); 1319 NewLHS = DAG.getNode(ISD::OR, dl, Tmp1.getValueType(), Tmp1, Tmp3); 1320 NewRHS = SDValue(); // LHS is the result, not a compare. 1321} 1322 1323SDValue DAGTypeLegalizer::ExpandFloatOp_BR_CC(SDNode *N) { 1324 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); 1325 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); 1326 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc()); 1327 1328 // If ExpandSetCCOperands returned a scalar, we need to compare the result 1329 // against zero to select between true and false values. 1330 if (NewRHS.getNode() == 0) { 1331 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 1332 CCCode = ISD::SETNE; 1333 } 1334 1335 // Update N to have the operands specified. 1336 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0), 1337 DAG.getCondCode(CCCode), NewLHS, NewRHS, 1338 N->getOperand(4)), 0); 1339} 1340 1341SDValue DAGTypeLegalizer::ExpandFloatOp_FP_ROUND(SDNode *N) { 1342 assert(N->getOperand(0).getValueType() == MVT::ppcf128 && 1343 "Logic only correct for ppcf128!"); 1344 SDValue Lo, Hi; 1345 GetExpandedFloat(N->getOperand(0), Lo, Hi); 1346 // Round it the rest of the way (e.g. to f32) if needed. 1347 return DAG.getNode(ISD::FP_ROUND, N->getDebugLoc(), 1348 N->getValueType(0), Hi, N->getOperand(1)); 1349} 1350 1351SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) { 1352 EVT RVT = N->getValueType(0); 1353 DebugLoc dl = N->getDebugLoc(); 1354 1355 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on 1356 // PPC (the libcall is not available). FIXME: Do this in a less hacky way. 1357 if (RVT == MVT::i32) { 1358 assert(N->getOperand(0).getValueType() == MVT::ppcf128 && 1359 "Logic only correct for ppcf128!"); 1360 SDValue Res = DAG.getNode(ISD::FP_ROUND_INREG, dl, MVT::ppcf128, 1361 N->getOperand(0), DAG.getValueType(MVT::f64)); 1362 Res = DAG.getNode(ISD::FP_ROUND, dl, MVT::f64, Res, 1363 DAG.getIntPtrConstant(1)); 1364 return DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, Res); 1365 } 1366 1367 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT); 1368 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!"); 1369 return MakeLibCall(LC, RVT, &N->getOperand(0), 1, false, dl); 1370} 1371 1372SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) { 1373 EVT RVT = N->getValueType(0); 1374 DebugLoc dl = N->getDebugLoc(); 1375 1376 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on 1377 // PPC (the libcall is not available). FIXME: Do this in a less hacky way. 1378 if (RVT == MVT::i32) { 1379 assert(N->getOperand(0).getValueType() == MVT::ppcf128 && 1380 "Logic only correct for ppcf128!"); 1381 const uint64_t TwoE31[] = {0x41e0000000000000LL, 0}; 1382 APFloat APF = APFloat(APInt(128, TwoE31)); 1383 SDValue Tmp = DAG.getConstantFP(APF, MVT::ppcf128); 1384 // X>=2^31 ? (int)(X-2^31)+0x80000000 : (int)X 1385 // FIXME: generated code sucks. 1386 return DAG.getNode(ISD::SELECT_CC, dl, MVT::i32, N->getOperand(0), Tmp, 1387 DAG.getNode(ISD::ADD, dl, MVT::i32, 1388 DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, 1389 DAG.getNode(ISD::FSUB, dl, 1390 MVT::ppcf128, 1391 N->getOperand(0), 1392 Tmp)), 1393 DAG.getConstant(0x80000000, MVT::i32)), 1394 DAG.getNode(ISD::FP_TO_SINT, dl, 1395 MVT::i32, N->getOperand(0)), 1396 DAG.getCondCode(ISD::SETGE)); 1397 } 1398 1399 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT); 1400 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!"); 1401 return MakeLibCall(LC, N->getValueType(0), &N->getOperand(0), 1, false, dl); 1402} 1403 1404SDValue DAGTypeLegalizer::ExpandFloatOp_SELECT_CC(SDNode *N) { 1405 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 1406 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); 1407 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc()); 1408 1409 // If ExpandSetCCOperands returned a scalar, we need to compare the result 1410 // against zero to select between true and false values. 1411 if (NewRHS.getNode() == 0) { 1412 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 1413 CCCode = ISD::SETNE; 1414 } 1415 1416 // Update N to have the operands specified. 1417 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 1418 N->getOperand(2), N->getOperand(3), 1419 DAG.getCondCode(CCCode)), 0); 1420} 1421 1422SDValue DAGTypeLegalizer::ExpandFloatOp_SETCC(SDNode *N) { 1423 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 1424 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); 1425 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc()); 1426 1427 // If ExpandSetCCOperands returned a scalar, use it. 1428 if (NewRHS.getNode() == 0) { 1429 assert(NewLHS.getValueType() == N->getValueType(0) && 1430 "Unexpected setcc expansion!"); 1431 return NewLHS; 1432 } 1433 1434 // Otherwise, update N to have the operands specified. 1435 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 1436 DAG.getCondCode(CCCode)), 0); 1437} 1438 1439SDValue DAGTypeLegalizer::ExpandFloatOp_STORE(SDNode *N, unsigned OpNo) { 1440 if (ISD::isNormalStore(N)) 1441 return ExpandOp_NormalStore(N, OpNo); 1442 1443 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 1444 assert(OpNo == 1 && "Can only expand the stored value so far"); 1445 StoreSDNode *ST = cast<StoreSDNode>(N); 1446 1447 SDValue Chain = ST->getChain(); 1448 SDValue Ptr = ST->getBasePtr(); 1449 1450 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 1451 ST->getValue().getValueType()); 1452 assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1453 assert(ST->getMemoryVT().bitsLE(NVT) && "Float type not round?"); 1454 (void)NVT; 1455 1456 SDValue Lo, Hi; 1457 GetExpandedOp(ST->getValue(), Lo, Hi); 1458 1459 return DAG.getTruncStore(Chain, N->getDebugLoc(), Hi, Ptr, 1460 ST->getPointerInfo(), 1461 ST->getMemoryVT(), ST->isVolatile(), 1462 ST->isNonTemporal(), ST->getAlignment()); 1463} 1464