1 //===-------- LegalizeFloatTypes.cpp - Legalization of float types --------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements float type expansion and softening for LegalizeTypes. 11 // Softening is the act of turning a computation in an illegal floating point 12 // type into a computation in an integer type of the same size; also known as 13 // "soft float". For example, turning f32 arithmetic into operations using i32. 14 // The resulting integer value is the same as what you would get by performing 15 // the floating point operation and bitcasting the result to the integer type. 16 // Expansion is the act of changing a computation in an illegal type to be a 17 // computation in two identical registers of a smaller type. For example, 18 // implementing ppcf128 arithmetic in two f64 registers. 19 // 20 //===----------------------------------------------------------------------===// 21 22 #include "LegalizeTypes.h" 23 #include "llvm/Support/ErrorHandling.h" 24 #include "llvm/Support/raw_ostream.h" 25 using namespace llvm; 26 27 #define DEBUG_TYPE "legalize-types" 28 29 /// GetFPLibCall - Return the right libcall for the given floating point type. 30 static RTLIB::Libcall GetFPLibCall(EVT VT, 31 RTLIB::Libcall Call_F32, 32 RTLIB::Libcall Call_F64, 33 RTLIB::Libcall Call_F80, 34 RTLIB::Libcall Call_F128, 35 RTLIB::Libcall Call_PPCF128) { 36 return 37 VT == MVT::f32 ? Call_F32 : 38 VT == MVT::f64 ? Call_F64 : 39 VT == MVT::f80 ? Call_F80 : 40 VT == MVT::f128 ? Call_F128 : 41 VT == MVT::ppcf128 ? Call_PPCF128 : 42 RTLIB::UNKNOWN_LIBCALL; 43 } 44 45 //===----------------------------------------------------------------------===// 46 // Result Float to Integer Conversion. 47 //===----------------------------------------------------------------------===// 48 49 void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) { 50 DEBUG(dbgs() << "Soften float result " << ResNo << ": "; N->dump(&DAG); 51 dbgs() << "\n"); 52 SDValue R = SDValue(); 53 54 switch (N->getOpcode()) { 55 default: 56 #ifndef NDEBUG 57 dbgs() << "SoftenFloatResult #" << ResNo << ": "; 58 N->dump(&DAG); dbgs() << "\n"; 59 #endif 60 llvm_unreachable("Do not know how to soften the result of this operator!"); 61 62 case ISD::MERGE_VALUES:R = SoftenFloatRes_MERGE_VALUES(N, ResNo); break; 63 case ISD::BITCAST: R = SoftenFloatRes_BITCAST(N); break; 64 case ISD::BUILD_PAIR: R = SoftenFloatRes_BUILD_PAIR(N); break; 65 case ISD::ConstantFP: 66 R = SoftenFloatRes_ConstantFP(cast<ConstantFPSDNode>(N)); 67 break; 68 case ISD::EXTRACT_VECTOR_ELT: 69 R = SoftenFloatRes_EXTRACT_VECTOR_ELT(N); break; 70 case ISD::FABS: R = SoftenFloatRes_FABS(N); break; 71 case ISD::FADD: R = SoftenFloatRes_FADD(N); break; 72 case ISD::FCEIL: R = SoftenFloatRes_FCEIL(N); break; 73 case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break; 74 case ISD::FCOS: R = SoftenFloatRes_FCOS(N); break; 75 case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break; 76 case ISD::FEXP: R = SoftenFloatRes_FEXP(N); break; 77 case ISD::FEXP2: R = SoftenFloatRes_FEXP2(N); break; 78 case ISD::FFLOOR: R = SoftenFloatRes_FFLOOR(N); break; 79 case ISD::FLOG: R = SoftenFloatRes_FLOG(N); break; 80 case ISD::FLOG2: R = SoftenFloatRes_FLOG2(N); break; 81 case ISD::FLOG10: R = SoftenFloatRes_FLOG10(N); break; 82 case ISD::FMA: R = SoftenFloatRes_FMA(N); break; 83 case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break; 84 case ISD::FNEARBYINT: R = SoftenFloatRes_FNEARBYINT(N); break; 85 case ISD::FNEG: R = SoftenFloatRes_FNEG(N); break; 86 case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break; 87 case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break; 88 case ISD::FP16_TO_FP32:R = SoftenFloatRes_FP16_TO_FP32(N); break; 89 case ISD::FPOW: R = SoftenFloatRes_FPOW(N); break; 90 case ISD::FPOWI: R = SoftenFloatRes_FPOWI(N); break; 91 case ISD::FREM: R = SoftenFloatRes_FREM(N); break; 92 case ISD::FRINT: R = SoftenFloatRes_FRINT(N); break; 93 case ISD::FROUND: R = SoftenFloatRes_FROUND(N); break; 94 case ISD::FSIN: R = SoftenFloatRes_FSIN(N); break; 95 case ISD::FSQRT: R = SoftenFloatRes_FSQRT(N); break; 96 case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break; 97 case ISD::FTRUNC: R = SoftenFloatRes_FTRUNC(N); break; 98 case ISD::LOAD: R = SoftenFloatRes_LOAD(N); break; 99 case ISD::SELECT: R = SoftenFloatRes_SELECT(N); break; 100 case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N); break; 101 case ISD::SINT_TO_FP: 102 case ISD::UINT_TO_FP: R = SoftenFloatRes_XINT_TO_FP(N); break; 103 case ISD::UNDEF: R = SoftenFloatRes_UNDEF(N); break; 104 case ISD::VAARG: R = SoftenFloatRes_VAARG(N); break; 105 } 106 107 // If R is null, the sub-method took care of registering the result. 108 if (R.getNode()) 109 SetSoftenedFloat(SDValue(N, ResNo), R); 110 } 111 112 SDValue DAGTypeLegalizer::SoftenFloatRes_BITCAST(SDNode *N) { 113 return BitConvertToInteger(N->getOperand(0)); 114 } 115 116 SDValue DAGTypeLegalizer::SoftenFloatRes_MERGE_VALUES(SDNode *N, 117 unsigned ResNo) { 118 SDValue Op = DisintegrateMERGE_VALUES(N, ResNo); 119 return BitConvertToInteger(Op); 120 } 121 122 SDValue DAGTypeLegalizer::SoftenFloatRes_BUILD_PAIR(SDNode *N) { 123 // Convert the inputs to integers, and build a new pair out of them. 124 return DAG.getNode(ISD::BUILD_PAIR, SDLoc(N), 125 TLI.getTypeToTransformTo(*DAG.getContext(), 126 N->getValueType(0)), 127 BitConvertToInteger(N->getOperand(0)), 128 BitConvertToInteger(N->getOperand(1))); 129 } 130 131 SDValue DAGTypeLegalizer::SoftenFloatRes_ConstantFP(ConstantFPSDNode *N) { 132 return DAG.getConstant(N->getValueAPF().bitcastToAPInt(), 133 TLI.getTypeToTransformTo(*DAG.getContext(), 134 N->getValueType(0))); 135 } 136 137 SDValue DAGTypeLegalizer::SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N) { 138 SDValue NewOp = BitConvertVectorToIntegerVector(N->getOperand(0)); 139 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SDLoc(N), 140 NewOp.getValueType().getVectorElementType(), 141 NewOp, N->getOperand(1)); 142 } 143 144 SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) { 145 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 146 unsigned Size = NVT.getSizeInBits(); 147 148 // Mask = ~(1 << (Size-1)) 149 APInt API = APInt::getAllOnesValue(Size); 150 API.clearBit(Size-1); 151 SDValue Mask = DAG.getConstant(API, NVT); 152 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 153 return DAG.getNode(ISD::AND, SDLoc(N), NVT, Op, Mask); 154 } 155 156 SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) { 157 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 158 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 159 GetSoftenedFloat(N->getOperand(1)) }; 160 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 161 RTLIB::ADD_F32, 162 RTLIB::ADD_F64, 163 RTLIB::ADD_F80, 164 RTLIB::ADD_F128, 165 RTLIB::ADD_PPCF128), 166 NVT, Ops, 2, false, SDLoc(N)).first; 167 } 168 169 SDValue DAGTypeLegalizer::SoftenFloatRes_FCEIL(SDNode *N) { 170 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 171 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 172 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 173 RTLIB::CEIL_F32, 174 RTLIB::CEIL_F64, 175 RTLIB::CEIL_F80, 176 RTLIB::CEIL_F128, 177 RTLIB::CEIL_PPCF128), 178 NVT, &Op, 1, false, SDLoc(N)).first; 179 } 180 181 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) { 182 SDValue LHS = GetSoftenedFloat(N->getOperand(0)); 183 SDValue RHS = BitConvertToInteger(N->getOperand(1)); 184 SDLoc dl(N); 185 186 EVT LVT = LHS.getValueType(); 187 EVT RVT = RHS.getValueType(); 188 189 unsigned LSize = LVT.getSizeInBits(); 190 unsigned RSize = RVT.getSizeInBits(); 191 192 // First get the sign bit of second operand. 193 SDValue SignBit = DAG.getNode(ISD::SHL, dl, RVT, DAG.getConstant(1, RVT), 194 DAG.getConstant(RSize - 1, 195 TLI.getShiftAmountTy(RVT))); 196 SignBit = DAG.getNode(ISD::AND, dl, RVT, RHS, SignBit); 197 198 // Shift right or sign-extend it if the two operands have different types. 199 int SizeDiff = RVT.getSizeInBits() - LVT.getSizeInBits(); 200 if (SizeDiff > 0) { 201 SignBit = DAG.getNode(ISD::SRL, dl, RVT, SignBit, 202 DAG.getConstant(SizeDiff, 203 TLI.getShiftAmountTy(SignBit.getValueType()))); 204 SignBit = DAG.getNode(ISD::TRUNCATE, dl, LVT, SignBit); 205 } else if (SizeDiff < 0) { 206 SignBit = DAG.getNode(ISD::ANY_EXTEND, dl, LVT, SignBit); 207 SignBit = DAG.getNode(ISD::SHL, dl, LVT, SignBit, 208 DAG.getConstant(-SizeDiff, 209 TLI.getShiftAmountTy(SignBit.getValueType()))); 210 } 211 212 // Clear the sign bit of the first operand. 213 SDValue Mask = DAG.getNode(ISD::SHL, dl, LVT, DAG.getConstant(1, LVT), 214 DAG.getConstant(LSize - 1, 215 TLI.getShiftAmountTy(LVT))); 216 Mask = DAG.getNode(ISD::SUB, dl, LVT, Mask, DAG.getConstant(1, LVT)); 217 LHS = DAG.getNode(ISD::AND, dl, LVT, LHS, Mask); 218 219 // Or the value with the sign bit. 220 return DAG.getNode(ISD::OR, dl, LVT, LHS, SignBit); 221 } 222 223 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) { 224 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 225 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 226 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 227 RTLIB::COS_F32, 228 RTLIB::COS_F64, 229 RTLIB::COS_F80, 230 RTLIB::COS_F128, 231 RTLIB::COS_PPCF128), 232 NVT, &Op, 1, false, SDLoc(N)).first; 233 } 234 235 SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) { 236 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 237 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 238 GetSoftenedFloat(N->getOperand(1)) }; 239 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 240 RTLIB::DIV_F32, 241 RTLIB::DIV_F64, 242 RTLIB::DIV_F80, 243 RTLIB::DIV_F128, 244 RTLIB::DIV_PPCF128), 245 NVT, Ops, 2, false, SDLoc(N)).first; 246 } 247 248 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) { 249 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 250 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 251 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 252 RTLIB::EXP_F32, 253 RTLIB::EXP_F64, 254 RTLIB::EXP_F80, 255 RTLIB::EXP_F128, 256 RTLIB::EXP_PPCF128), 257 NVT, &Op, 1, false, SDLoc(N)).first; 258 } 259 260 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) { 261 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 262 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 263 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 264 RTLIB::EXP2_F32, 265 RTLIB::EXP2_F64, 266 RTLIB::EXP2_F80, 267 RTLIB::EXP2_F128, 268 RTLIB::EXP2_PPCF128), 269 NVT, &Op, 1, false, SDLoc(N)).first; 270 } 271 272 SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) { 273 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 274 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 275 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 276 RTLIB::FLOOR_F32, 277 RTLIB::FLOOR_F64, 278 RTLIB::FLOOR_F80, 279 RTLIB::FLOOR_F128, 280 RTLIB::FLOOR_PPCF128), 281 NVT, &Op, 1, false, SDLoc(N)).first; 282 } 283 284 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) { 285 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 286 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 287 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 288 RTLIB::LOG_F32, 289 RTLIB::LOG_F64, 290 RTLIB::LOG_F80, 291 RTLIB::LOG_F128, 292 RTLIB::LOG_PPCF128), 293 NVT, &Op, 1, false, SDLoc(N)).first; 294 } 295 296 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) { 297 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 298 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 299 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 300 RTLIB::LOG2_F32, 301 RTLIB::LOG2_F64, 302 RTLIB::LOG2_F80, 303 RTLIB::LOG2_F128, 304 RTLIB::LOG2_PPCF128), 305 NVT, &Op, 1, false, SDLoc(N)).first; 306 } 307 308 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) { 309 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 310 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 311 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 312 RTLIB::LOG10_F32, 313 RTLIB::LOG10_F64, 314 RTLIB::LOG10_F80, 315 RTLIB::LOG10_F128, 316 RTLIB::LOG10_PPCF128), 317 NVT, &Op, 1, false, SDLoc(N)).first; 318 } 319 320 SDValue DAGTypeLegalizer::SoftenFloatRes_FMA(SDNode *N) { 321 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 322 SDValue Ops[3] = { GetSoftenedFloat(N->getOperand(0)), 323 GetSoftenedFloat(N->getOperand(1)), 324 GetSoftenedFloat(N->getOperand(2)) }; 325 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 326 RTLIB::FMA_F32, 327 RTLIB::FMA_F64, 328 RTLIB::FMA_F80, 329 RTLIB::FMA_F128, 330 RTLIB::FMA_PPCF128), 331 NVT, Ops, 3, false, SDLoc(N)).first; 332 } 333 334 SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) { 335 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 336 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 337 GetSoftenedFloat(N->getOperand(1)) }; 338 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 339 RTLIB::MUL_F32, 340 RTLIB::MUL_F64, 341 RTLIB::MUL_F80, 342 RTLIB::MUL_F128, 343 RTLIB::MUL_PPCF128), 344 NVT, Ops, 2, false, SDLoc(N)).first; 345 } 346 347 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) { 348 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 349 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 350 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 351 RTLIB::NEARBYINT_F32, 352 RTLIB::NEARBYINT_F64, 353 RTLIB::NEARBYINT_F80, 354 RTLIB::NEARBYINT_F128, 355 RTLIB::NEARBYINT_PPCF128), 356 NVT, &Op, 1, false, SDLoc(N)).first; 357 } 358 359 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) { 360 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 361 // Expand Y = FNEG(X) -> Y = SUB -0.0, X 362 SDValue Ops[2] = { DAG.getConstantFP(-0.0, N->getValueType(0)), 363 GetSoftenedFloat(N->getOperand(0)) }; 364 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 365 RTLIB::SUB_F32, 366 RTLIB::SUB_F64, 367 RTLIB::SUB_F80, 368 RTLIB::SUB_F128, 369 RTLIB::SUB_PPCF128), 370 NVT, Ops, 2, false, SDLoc(N)).first; 371 } 372 373 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) { 374 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 375 SDValue Op = N->getOperand(0); 376 RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0)); 377 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!"); 378 return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)).first; 379 } 380 381 // FIXME: Should we just use 'normal' FP_EXTEND / FP_TRUNC instead of special 382 // nodes? 383 SDValue DAGTypeLegalizer::SoftenFloatRes_FP16_TO_FP32(SDNode *N) { 384 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 385 SDValue Op = N->getOperand(0); 386 return TLI.makeLibCall(DAG, RTLIB::FPEXT_F16_F32, NVT, &Op, 1, false, 387 SDLoc(N)).first; 388 } 389 390 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) { 391 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 392 SDValue Op = N->getOperand(0); 393 RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0)); 394 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!"); 395 return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)).first; 396 } 397 398 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) { 399 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 400 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 401 GetSoftenedFloat(N->getOperand(1)) }; 402 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 403 RTLIB::POW_F32, 404 RTLIB::POW_F64, 405 RTLIB::POW_F80, 406 RTLIB::POW_F128, 407 RTLIB::POW_PPCF128), 408 NVT, Ops, 2, false, SDLoc(N)).first; 409 } 410 411 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) { 412 assert(N->getOperand(1).getValueType() == MVT::i32 && 413 "Unsupported power type!"); 414 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 415 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) }; 416 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 417 RTLIB::POWI_F32, 418 RTLIB::POWI_F64, 419 RTLIB::POWI_F80, 420 RTLIB::POWI_F128, 421 RTLIB::POWI_PPCF128), 422 NVT, Ops, 2, false, SDLoc(N)).first; 423 } 424 425 SDValue DAGTypeLegalizer::SoftenFloatRes_FREM(SDNode *N) { 426 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 427 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 428 GetSoftenedFloat(N->getOperand(1)) }; 429 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 430 RTLIB::REM_F32, 431 RTLIB::REM_F64, 432 RTLIB::REM_F80, 433 RTLIB::REM_F128, 434 RTLIB::REM_PPCF128), 435 NVT, Ops, 2, false, SDLoc(N)).first; 436 } 437 438 SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) { 439 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 440 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 441 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 442 RTLIB::RINT_F32, 443 RTLIB::RINT_F64, 444 RTLIB::RINT_F80, 445 RTLIB::RINT_F128, 446 RTLIB::RINT_PPCF128), 447 NVT, &Op, 1, false, SDLoc(N)).first; 448 } 449 450 SDValue DAGTypeLegalizer::SoftenFloatRes_FROUND(SDNode *N) { 451 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 452 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 453 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 454 RTLIB::ROUND_F32, 455 RTLIB::ROUND_F64, 456 RTLIB::ROUND_F80, 457 RTLIB::ROUND_F128, 458 RTLIB::ROUND_PPCF128), 459 NVT, &Op, 1, false, SDLoc(N)).first; 460 } 461 462 SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) { 463 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 464 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 465 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 466 RTLIB::SIN_F32, 467 RTLIB::SIN_F64, 468 RTLIB::SIN_F80, 469 RTLIB::SIN_F128, 470 RTLIB::SIN_PPCF128), 471 NVT, &Op, 1, false, SDLoc(N)).first; 472 } 473 474 SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) { 475 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 476 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 477 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 478 RTLIB::SQRT_F32, 479 RTLIB::SQRT_F64, 480 RTLIB::SQRT_F80, 481 RTLIB::SQRT_F128, 482 RTLIB::SQRT_PPCF128), 483 NVT, &Op, 1, false, SDLoc(N)).first; 484 } 485 486 SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) { 487 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 488 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), 489 GetSoftenedFloat(N->getOperand(1)) }; 490 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 491 RTLIB::SUB_F32, 492 RTLIB::SUB_F64, 493 RTLIB::SUB_F80, 494 RTLIB::SUB_F128, 495 RTLIB::SUB_PPCF128), 496 NVT, Ops, 2, false, SDLoc(N)).first; 497 } 498 499 SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) { 500 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 501 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 502 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 503 RTLIB::TRUNC_F32, 504 RTLIB::TRUNC_F64, 505 RTLIB::TRUNC_F80, 506 RTLIB::TRUNC_F128, 507 RTLIB::TRUNC_PPCF128), 508 NVT, &Op, 1, false, SDLoc(N)).first; 509 } 510 511 SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) { 512 LoadSDNode *L = cast<LoadSDNode>(N); 513 EVT VT = N->getValueType(0); 514 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 515 SDLoc dl(N); 516 517 SDValue NewL; 518 if (L->getExtensionType() == ISD::NON_EXTLOAD) { 519 NewL = DAG.getLoad(L->getAddressingMode(), L->getExtensionType(), 520 NVT, dl, L->getChain(), L->getBasePtr(), L->getOffset(), 521 L->getPointerInfo(), NVT, L->isVolatile(), 522 L->isNonTemporal(), false, L->getAlignment(), 523 L->getTBAAInfo()); 524 // Legalized the chain result - switch anything that used the old chain to 525 // use the new one. 526 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1)); 527 return NewL; 528 } 529 530 // Do a non-extending load followed by FP_EXTEND. 531 NewL = DAG.getLoad(L->getAddressingMode(), ISD::NON_EXTLOAD, 532 L->getMemoryVT(), dl, L->getChain(), 533 L->getBasePtr(), L->getOffset(), L->getPointerInfo(), 534 L->getMemoryVT(), L->isVolatile(), 535 L->isNonTemporal(), false, L->getAlignment(), 536 L->getTBAAInfo()); 537 // Legalized the chain result - switch anything that used the old chain to 538 // use the new one. 539 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1)); 540 return BitConvertToInteger(DAG.getNode(ISD::FP_EXTEND, dl, VT, NewL)); 541 } 542 543 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N) { 544 SDValue LHS = GetSoftenedFloat(N->getOperand(1)); 545 SDValue RHS = GetSoftenedFloat(N->getOperand(2)); 546 return DAG.getSelect(SDLoc(N), 547 LHS.getValueType(), N->getOperand(0), LHS, RHS); 548 } 549 550 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT_CC(SDNode *N) { 551 SDValue LHS = GetSoftenedFloat(N->getOperand(2)); 552 SDValue RHS = GetSoftenedFloat(N->getOperand(3)); 553 return DAG.getNode(ISD::SELECT_CC, SDLoc(N), 554 LHS.getValueType(), N->getOperand(0), 555 N->getOperand(1), LHS, RHS, N->getOperand(4)); 556 } 557 558 SDValue DAGTypeLegalizer::SoftenFloatRes_UNDEF(SDNode *N) { 559 return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(), 560 N->getValueType(0))); 561 } 562 563 SDValue DAGTypeLegalizer::SoftenFloatRes_VAARG(SDNode *N) { 564 SDValue Chain = N->getOperand(0); // Get the chain. 565 SDValue Ptr = N->getOperand(1); // Get the pointer. 566 EVT VT = N->getValueType(0); 567 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 568 SDLoc dl(N); 569 570 SDValue NewVAARG; 571 NewVAARG = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2), 572 N->getConstantOperandVal(3)); 573 574 // Legalized the chain result - switch anything that used the old chain to 575 // use the new one. 576 ReplaceValueWith(SDValue(N, 1), NewVAARG.getValue(1)); 577 return NewVAARG; 578 } 579 580 SDValue DAGTypeLegalizer::SoftenFloatRes_XINT_TO_FP(SDNode *N) { 581 bool Signed = N->getOpcode() == ISD::SINT_TO_FP; 582 EVT SVT = N->getOperand(0).getValueType(); 583 EVT RVT = N->getValueType(0); 584 EVT NVT = EVT(); 585 SDLoc dl(N); 586 587 // If the input is not legal, eg: i1 -> fp, then it needs to be promoted to 588 // a larger type, eg: i8 -> fp. Even if it is legal, no libcall may exactly 589 // match. Look for an appropriate libcall. 590 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 591 for (unsigned t = MVT::FIRST_INTEGER_VALUETYPE; 592 t <= MVT::LAST_INTEGER_VALUETYPE && LC == RTLIB::UNKNOWN_LIBCALL; ++t) { 593 NVT = (MVT::SimpleValueType)t; 594 // The source needs to big enough to hold the operand. 595 if (NVT.bitsGE(SVT)) 596 LC = Signed ? RTLIB::getSINTTOFP(NVT, RVT):RTLIB::getUINTTOFP (NVT, RVT); 597 } 598 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!"); 599 600 // Sign/zero extend the argument if the libcall takes a larger type. 601 SDValue Op = DAG.getNode(Signed ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl, 602 NVT, N->getOperand(0)); 603 return TLI.makeLibCall(DAG, LC, 604 TLI.getTypeToTransformTo(*DAG.getContext(), RVT), 605 &Op, 1, false, dl).first; 606 } 607 608 609 //===----------------------------------------------------------------------===// 610 // Operand Float to Integer Conversion.. 611 //===----------------------------------------------------------------------===// 612 613 bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) { 614 DEBUG(dbgs() << "Soften float operand " << OpNo << ": "; N->dump(&DAG); 615 dbgs() << "\n"); 616 SDValue Res = SDValue(); 617 618 switch (N->getOpcode()) { 619 default: 620 #ifndef NDEBUG 621 dbgs() << "SoftenFloatOperand Op #" << OpNo << ": "; 622 N->dump(&DAG); dbgs() << "\n"; 623 #endif 624 llvm_unreachable("Do not know how to soften this operator's operand!"); 625 626 case ISD::BITCAST: Res = SoftenFloatOp_BITCAST(N); break; 627 case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break; 628 case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break; 629 case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break; 630 case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_UINT(N); break; 631 case ISD::FP32_TO_FP16:Res = SoftenFloatOp_FP32_TO_FP16(N); break; 632 case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break; 633 case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break; 634 case ISD::STORE: Res = SoftenFloatOp_STORE(N, OpNo); break; 635 } 636 637 // If the result is null, the sub-method took care of registering results etc. 638 if (!Res.getNode()) return false; 639 640 // If the result is N, the sub-method updated N in place. Tell the legalizer 641 // core about this. 642 if (Res.getNode() == N) 643 return true; 644 645 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 646 "Invalid operand expansion"); 647 648 ReplaceValueWith(SDValue(N, 0), Res); 649 return false; 650 } 651 652 SDValue DAGTypeLegalizer::SoftenFloatOp_BITCAST(SDNode *N) { 653 return DAG.getNode(ISD::BITCAST, SDLoc(N), N->getValueType(0), 654 GetSoftenedFloat(N->getOperand(0))); 655 } 656 657 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) { 658 EVT SVT = N->getOperand(0).getValueType(); 659 EVT RVT = N->getValueType(0); 660 661 RTLIB::Libcall LC = RTLIB::getFPROUND(SVT, RVT); 662 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND libcall"); 663 664 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 665 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first; 666 } 667 668 SDValue DAGTypeLegalizer::SoftenFloatOp_BR_CC(SDNode *N) { 669 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); 670 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); 671 672 EVT VT = NewLHS.getValueType(); 673 NewLHS = GetSoftenedFloat(NewLHS); 674 NewRHS = GetSoftenedFloat(NewRHS); 675 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N)); 676 677 // If softenSetCCOperands returned a scalar, we need to compare the result 678 // against zero to select between true and false values. 679 if (!NewRHS.getNode()) { 680 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 681 CCCode = ISD::SETNE; 682 } 683 684 // Update N to have the operands specified. 685 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0), 686 DAG.getCondCode(CCCode), NewLHS, NewRHS, 687 N->getOperand(4)), 688 0); 689 } 690 691 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_SINT(SDNode *N) { 692 EVT RVT = N->getValueType(0); 693 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT); 694 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!"); 695 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 696 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first; 697 } 698 699 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) { 700 EVT RVT = N->getValueType(0); 701 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT); 702 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!"); 703 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 704 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first; 705 } 706 707 SDValue DAGTypeLegalizer::SoftenFloatOp_FP32_TO_FP16(SDNode *N) { 708 EVT RVT = N->getValueType(0); 709 RTLIB::Libcall LC = RTLIB::FPROUND_F32_F16; 710 SDValue Op = GetSoftenedFloat(N->getOperand(0)); 711 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first; 712 } 713 714 SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) { 715 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 716 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); 717 718 EVT VT = NewLHS.getValueType(); 719 NewLHS = GetSoftenedFloat(NewLHS); 720 NewRHS = GetSoftenedFloat(NewRHS); 721 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N)); 722 723 // If softenSetCCOperands returned a scalar, we need to compare the result 724 // against zero to select between true and false values. 725 if (!NewRHS.getNode()) { 726 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 727 CCCode = ISD::SETNE; 728 } 729 730 // Update N to have the operands specified. 731 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 732 N->getOperand(2), N->getOperand(3), 733 DAG.getCondCode(CCCode)), 734 0); 735 } 736 737 SDValue DAGTypeLegalizer::SoftenFloatOp_SETCC(SDNode *N) { 738 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 739 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); 740 741 EVT VT = NewLHS.getValueType(); 742 NewLHS = GetSoftenedFloat(NewLHS); 743 NewRHS = GetSoftenedFloat(NewRHS); 744 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N)); 745 746 // If softenSetCCOperands returned a scalar, use it. 747 if (!NewRHS.getNode()) { 748 assert(NewLHS.getValueType() == N->getValueType(0) && 749 "Unexpected setcc expansion!"); 750 return NewLHS; 751 } 752 753 // Otherwise, update N to have the operands specified. 754 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 755 DAG.getCondCode(CCCode)), 756 0); 757 } 758 759 SDValue DAGTypeLegalizer::SoftenFloatOp_STORE(SDNode *N, unsigned OpNo) { 760 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 761 assert(OpNo == 1 && "Can only soften the stored value!"); 762 StoreSDNode *ST = cast<StoreSDNode>(N); 763 SDValue Val = ST->getValue(); 764 SDLoc dl(N); 765 766 if (ST->isTruncatingStore()) 767 // Do an FP_ROUND followed by a non-truncating store. 768 Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, dl, ST->getMemoryVT(), 769 Val, DAG.getIntPtrConstant(0))); 770 else 771 Val = GetSoftenedFloat(Val); 772 773 return DAG.getStore(ST->getChain(), dl, Val, ST->getBasePtr(), 774 ST->getMemOperand()); 775 } 776 777 778 //===----------------------------------------------------------------------===// 779 // Float Result Expansion 780 //===----------------------------------------------------------------------===// 781 782 /// ExpandFloatResult - This method is called when the specified result of the 783 /// specified node is found to need expansion. At this point, the node may also 784 /// have invalid operands or may have other results that need promotion, we just 785 /// know that (at least) one result needs expansion. 786 void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) { 787 DEBUG(dbgs() << "Expand float result: "; N->dump(&DAG); dbgs() << "\n"); 788 SDValue Lo, Hi; 789 Lo = Hi = SDValue(); 790 791 // See if the target wants to custom expand this node. 792 if (CustomLowerNode(N, N->getValueType(ResNo), true)) 793 return; 794 795 switch (N->getOpcode()) { 796 default: 797 #ifndef NDEBUG 798 dbgs() << "ExpandFloatResult #" << ResNo << ": "; 799 N->dump(&DAG); dbgs() << "\n"; 800 #endif 801 llvm_unreachable("Do not know how to expand the result of this operator!"); 802 803 case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break; 804 case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break; 805 case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break; 806 807 case ISD::MERGE_VALUES: ExpandRes_MERGE_VALUES(N, ResNo, Lo, Hi); break; 808 case ISD::BITCAST: ExpandRes_BITCAST(N, Lo, Hi); break; 809 case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break; 810 case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break; 811 case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break; 812 case ISD::VAARG: ExpandRes_VAARG(N, Lo, Hi); break; 813 814 case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break; 815 case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break; 816 case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break; 817 case ISD::FCEIL: ExpandFloatRes_FCEIL(N, Lo, Hi); break; 818 case ISD::FCOPYSIGN: ExpandFloatRes_FCOPYSIGN(N, Lo, Hi); break; 819 case ISD::FCOS: ExpandFloatRes_FCOS(N, Lo, Hi); break; 820 case ISD::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break; 821 case ISD::FEXP: ExpandFloatRes_FEXP(N, Lo, Hi); break; 822 case ISD::FEXP2: ExpandFloatRes_FEXP2(N, Lo, Hi); break; 823 case ISD::FFLOOR: ExpandFloatRes_FFLOOR(N, Lo, Hi); break; 824 case ISD::FLOG: ExpandFloatRes_FLOG(N, Lo, Hi); break; 825 case ISD::FLOG2: ExpandFloatRes_FLOG2(N, Lo, Hi); break; 826 case ISD::FLOG10: ExpandFloatRes_FLOG10(N, Lo, Hi); break; 827 case ISD::FMA: ExpandFloatRes_FMA(N, Lo, Hi); break; 828 case ISD::FMUL: ExpandFloatRes_FMUL(N, Lo, Hi); break; 829 case ISD::FNEARBYINT: ExpandFloatRes_FNEARBYINT(N, Lo, Hi); break; 830 case ISD::FNEG: ExpandFloatRes_FNEG(N, Lo, Hi); break; 831 case ISD::FP_EXTEND: ExpandFloatRes_FP_EXTEND(N, Lo, Hi); break; 832 case ISD::FPOW: ExpandFloatRes_FPOW(N, Lo, Hi); break; 833 case ISD::FPOWI: ExpandFloatRes_FPOWI(N, Lo, Hi); break; 834 case ISD::FRINT: ExpandFloatRes_FRINT(N, Lo, Hi); break; 835 case ISD::FROUND: ExpandFloatRes_FROUND(N, Lo, Hi); break; 836 case ISD::FSIN: ExpandFloatRes_FSIN(N, Lo, Hi); break; 837 case ISD::FSQRT: ExpandFloatRes_FSQRT(N, Lo, Hi); break; 838 case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break; 839 case ISD::FTRUNC: ExpandFloatRes_FTRUNC(N, Lo, Hi); break; 840 case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break; 841 case ISD::SINT_TO_FP: 842 case ISD::UINT_TO_FP: ExpandFloatRes_XINT_TO_FP(N, Lo, Hi); break; 843 case ISD::FREM: ExpandFloatRes_FREM(N, Lo, Hi); break; 844 } 845 846 // If Lo/Hi is null, the sub-method took care of registering results etc. 847 if (Lo.getNode()) 848 SetExpandedFloat(SDValue(N, ResNo), Lo, Hi); 849 } 850 851 void DAGTypeLegalizer::ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, 852 SDValue &Hi) { 853 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 854 assert(NVT.getSizeInBits() == integerPartWidth && 855 "Do not know how to expand this float constant!"); 856 APInt C = cast<ConstantFPSDNode>(N)->getValueAPF().bitcastToAPInt(); 857 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 858 APInt(integerPartWidth, C.getRawData()[1])), 859 NVT); 860 Hi = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 861 APInt(integerPartWidth, C.getRawData()[0])), 862 NVT); 863 } 864 865 void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo, 866 SDValue &Hi) { 867 assert(N->getValueType(0) == MVT::ppcf128 && 868 "Logic only correct for ppcf128!"); 869 SDLoc dl(N); 870 SDValue Tmp; 871 GetExpandedFloat(N->getOperand(0), Lo, Tmp); 872 Hi = DAG.getNode(ISD::FABS, dl, Tmp.getValueType(), Tmp); 873 // Lo = Hi==fabs(Hi) ? Lo : -Lo; 874 Lo = DAG.getSelectCC(dl, Tmp, Hi, Lo, 875 DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo), 876 ISD::SETEQ); 877 } 878 879 void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo, 880 SDValue &Hi) { 881 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 882 RTLIB::ADD_F32, RTLIB::ADD_F64, 883 RTLIB::ADD_F80, RTLIB::ADD_F128, 884 RTLIB::ADD_PPCF128), 885 N, false); 886 GetPairElements(Call, Lo, Hi); 887 } 888 889 void DAGTypeLegalizer::ExpandFloatRes_FCEIL(SDNode *N, 890 SDValue &Lo, SDValue &Hi) { 891 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 892 RTLIB::CEIL_F32, RTLIB::CEIL_F64, 893 RTLIB::CEIL_F80, RTLIB::CEIL_F128, 894 RTLIB::CEIL_PPCF128), 895 N, false); 896 GetPairElements(Call, Lo, Hi); 897 } 898 899 void DAGTypeLegalizer::ExpandFloatRes_FCOPYSIGN(SDNode *N, 900 SDValue &Lo, SDValue &Hi) { 901 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 902 RTLIB::COPYSIGN_F32, 903 RTLIB::COPYSIGN_F64, 904 RTLIB::COPYSIGN_F80, 905 RTLIB::COPYSIGN_F128, 906 RTLIB::COPYSIGN_PPCF128), 907 N, false); 908 GetPairElements(Call, Lo, Hi); 909 } 910 911 void DAGTypeLegalizer::ExpandFloatRes_FCOS(SDNode *N, 912 SDValue &Lo, SDValue &Hi) { 913 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 914 RTLIB::COS_F32, RTLIB::COS_F64, 915 RTLIB::COS_F80, RTLIB::COS_F128, 916 RTLIB::COS_PPCF128), 917 N, false); 918 GetPairElements(Call, Lo, Hi); 919 } 920 921 void DAGTypeLegalizer::ExpandFloatRes_FDIV(SDNode *N, SDValue &Lo, 922 SDValue &Hi) { 923 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 924 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 925 RTLIB::DIV_F32, 926 RTLIB::DIV_F64, 927 RTLIB::DIV_F80, 928 RTLIB::DIV_F128, 929 RTLIB::DIV_PPCF128), 930 N->getValueType(0), Ops, 2, false, 931 SDLoc(N)).first; 932 GetPairElements(Call, Lo, Hi); 933 } 934 935 void DAGTypeLegalizer::ExpandFloatRes_FEXP(SDNode *N, 936 SDValue &Lo, SDValue &Hi) { 937 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 938 RTLIB::EXP_F32, RTLIB::EXP_F64, 939 RTLIB::EXP_F80, RTLIB::EXP_F128, 940 RTLIB::EXP_PPCF128), 941 N, false); 942 GetPairElements(Call, Lo, Hi); 943 } 944 945 void DAGTypeLegalizer::ExpandFloatRes_FEXP2(SDNode *N, 946 SDValue &Lo, SDValue &Hi) { 947 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 948 RTLIB::EXP2_F32, RTLIB::EXP2_F64, 949 RTLIB::EXP2_F80, RTLIB::EXP2_F128, 950 RTLIB::EXP2_PPCF128), 951 N, false); 952 GetPairElements(Call, Lo, Hi); 953 } 954 955 void DAGTypeLegalizer::ExpandFloatRes_FFLOOR(SDNode *N, 956 SDValue &Lo, SDValue &Hi) { 957 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 958 RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 959 RTLIB::FLOOR_F80, RTLIB::FLOOR_F128, 960 RTLIB::FLOOR_PPCF128), 961 N, false); 962 GetPairElements(Call, Lo, Hi); 963 } 964 965 void DAGTypeLegalizer::ExpandFloatRes_FLOG(SDNode *N, 966 SDValue &Lo, SDValue &Hi) { 967 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 968 RTLIB::LOG_F32, RTLIB::LOG_F64, 969 RTLIB::LOG_F80, RTLIB::LOG_F128, 970 RTLIB::LOG_PPCF128), 971 N, false); 972 GetPairElements(Call, Lo, Hi); 973 } 974 975 void DAGTypeLegalizer::ExpandFloatRes_FLOG2(SDNode *N, 976 SDValue &Lo, SDValue &Hi) { 977 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 978 RTLIB::LOG2_F32, RTLIB::LOG2_F64, 979 RTLIB::LOG2_F80, RTLIB::LOG2_F128, 980 RTLIB::LOG2_PPCF128), 981 N, false); 982 GetPairElements(Call, Lo, Hi); 983 } 984 985 void DAGTypeLegalizer::ExpandFloatRes_FLOG10(SDNode *N, 986 SDValue &Lo, SDValue &Hi) { 987 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 988 RTLIB::LOG10_F32, RTLIB::LOG10_F64, 989 RTLIB::LOG10_F80, RTLIB::LOG10_F128, 990 RTLIB::LOG10_PPCF128), 991 N, false); 992 GetPairElements(Call, Lo, Hi); 993 } 994 995 void DAGTypeLegalizer::ExpandFloatRes_FMA(SDNode *N, SDValue &Lo, 996 SDValue &Hi) { 997 SDValue Ops[3] = { N->getOperand(0), N->getOperand(1), N->getOperand(2) }; 998 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 999 RTLIB::FMA_F32, 1000 RTLIB::FMA_F64, 1001 RTLIB::FMA_F80, 1002 RTLIB::FMA_F128, 1003 RTLIB::FMA_PPCF128), 1004 N->getValueType(0), Ops, 3, false, 1005 SDLoc(N)).first; 1006 GetPairElements(Call, Lo, Hi); 1007 } 1008 1009 void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDValue &Lo, 1010 SDValue &Hi) { 1011 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1012 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 1013 RTLIB::MUL_F32, 1014 RTLIB::MUL_F64, 1015 RTLIB::MUL_F80, 1016 RTLIB::MUL_F128, 1017 RTLIB::MUL_PPCF128), 1018 N->getValueType(0), Ops, 2, false, 1019 SDLoc(N)).first; 1020 GetPairElements(Call, Lo, Hi); 1021 } 1022 1023 void DAGTypeLegalizer::ExpandFloatRes_FNEARBYINT(SDNode *N, 1024 SDValue &Lo, SDValue &Hi) { 1025 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1026 RTLIB::NEARBYINT_F32, 1027 RTLIB::NEARBYINT_F64, 1028 RTLIB::NEARBYINT_F80, 1029 RTLIB::NEARBYINT_F128, 1030 RTLIB::NEARBYINT_PPCF128), 1031 N, false); 1032 GetPairElements(Call, Lo, Hi); 1033 } 1034 1035 void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDValue &Lo, 1036 SDValue &Hi) { 1037 SDLoc dl(N); 1038 GetExpandedFloat(N->getOperand(0), Lo, Hi); 1039 Lo = DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo); 1040 Hi = DAG.getNode(ISD::FNEG, dl, Hi.getValueType(), Hi); 1041 } 1042 1043 void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo, 1044 SDValue &Hi) { 1045 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 1046 Hi = DAG.getNode(ISD::FP_EXTEND, SDLoc(N), NVT, N->getOperand(0)); 1047 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 1048 APInt(NVT.getSizeInBits(), 0)), NVT); 1049 } 1050 1051 void DAGTypeLegalizer::ExpandFloatRes_FPOW(SDNode *N, 1052 SDValue &Lo, SDValue &Hi) { 1053 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1054 RTLIB::POW_F32, RTLIB::POW_F64, 1055 RTLIB::POW_F80, RTLIB::POW_F128, 1056 RTLIB::POW_PPCF128), 1057 N, false); 1058 GetPairElements(Call, Lo, Hi); 1059 } 1060 1061 void DAGTypeLegalizer::ExpandFloatRes_FPOWI(SDNode *N, 1062 SDValue &Lo, SDValue &Hi) { 1063 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1064 RTLIB::POWI_F32, RTLIB::POWI_F64, 1065 RTLIB::POWI_F80, RTLIB::POWI_F128, 1066 RTLIB::POWI_PPCF128), 1067 N, false); 1068 GetPairElements(Call, Lo, Hi); 1069 } 1070 1071 void DAGTypeLegalizer::ExpandFloatRes_FREM(SDNode *N, 1072 SDValue &Lo, SDValue &Hi) { 1073 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1074 RTLIB::REM_F32, RTLIB::REM_F64, 1075 RTLIB::REM_F80, RTLIB::REM_F128, 1076 RTLIB::REM_PPCF128), 1077 N, false); 1078 GetPairElements(Call, Lo, Hi); 1079 } 1080 1081 void DAGTypeLegalizer::ExpandFloatRes_FRINT(SDNode *N, 1082 SDValue &Lo, SDValue &Hi) { 1083 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1084 RTLIB::RINT_F32, RTLIB::RINT_F64, 1085 RTLIB::RINT_F80, RTLIB::RINT_F128, 1086 RTLIB::RINT_PPCF128), 1087 N, false); 1088 GetPairElements(Call, Lo, Hi); 1089 } 1090 1091 void DAGTypeLegalizer::ExpandFloatRes_FROUND(SDNode *N, 1092 SDValue &Lo, SDValue &Hi) { 1093 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1094 RTLIB::ROUND_F32, 1095 RTLIB::ROUND_F64, 1096 RTLIB::ROUND_F80, 1097 RTLIB::ROUND_F128, 1098 RTLIB::ROUND_PPCF128), 1099 N, false); 1100 GetPairElements(Call, Lo, Hi); 1101 } 1102 1103 void DAGTypeLegalizer::ExpandFloatRes_FSIN(SDNode *N, 1104 SDValue &Lo, SDValue &Hi) { 1105 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1106 RTLIB::SIN_F32, RTLIB::SIN_F64, 1107 RTLIB::SIN_F80, RTLIB::SIN_F128, 1108 RTLIB::SIN_PPCF128), 1109 N, false); 1110 GetPairElements(Call, Lo, Hi); 1111 } 1112 1113 void DAGTypeLegalizer::ExpandFloatRes_FSQRT(SDNode *N, 1114 SDValue &Lo, SDValue &Hi) { 1115 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1116 RTLIB::SQRT_F32, RTLIB::SQRT_F64, 1117 RTLIB::SQRT_F80, RTLIB::SQRT_F128, 1118 RTLIB::SQRT_PPCF128), 1119 N, false); 1120 GetPairElements(Call, Lo, Hi); 1121 } 1122 1123 void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo, 1124 SDValue &Hi) { 1125 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1126 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0), 1127 RTLIB::SUB_F32, 1128 RTLIB::SUB_F64, 1129 RTLIB::SUB_F80, 1130 RTLIB::SUB_F128, 1131 RTLIB::SUB_PPCF128), 1132 N->getValueType(0), Ops, 2, false, 1133 SDLoc(N)).first; 1134 GetPairElements(Call, Lo, Hi); 1135 } 1136 1137 void DAGTypeLegalizer::ExpandFloatRes_FTRUNC(SDNode *N, 1138 SDValue &Lo, SDValue &Hi) { 1139 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0), 1140 RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 1141 RTLIB::TRUNC_F80, RTLIB::TRUNC_F128, 1142 RTLIB::TRUNC_PPCF128), 1143 N, false); 1144 GetPairElements(Call, Lo, Hi); 1145 } 1146 1147 void DAGTypeLegalizer::ExpandFloatRes_LOAD(SDNode *N, SDValue &Lo, 1148 SDValue &Hi) { 1149 if (ISD::isNormalLoad(N)) { 1150 ExpandRes_NormalLoad(N, Lo, Hi); 1151 return; 1152 } 1153 1154 assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 1155 LoadSDNode *LD = cast<LoadSDNode>(N); 1156 SDValue Chain = LD->getChain(); 1157 SDValue Ptr = LD->getBasePtr(); 1158 SDLoc dl(N); 1159 1160 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), LD->getValueType(0)); 1161 assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1162 assert(LD->getMemoryVT().bitsLE(NVT) && "Float type not round?"); 1163 1164 Hi = DAG.getExtLoad(LD->getExtensionType(), dl, NVT, Chain, Ptr, 1165 LD->getMemoryVT(), LD->getMemOperand()); 1166 1167 // Remember the chain. 1168 Chain = Hi.getValue(1); 1169 1170 // The low part is zero. 1171 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 1172 APInt(NVT.getSizeInBits(), 0)), NVT); 1173 1174 // Modified the chain - switch anything that used the old chain to use the 1175 // new one. 1176 ReplaceValueWith(SDValue(LD, 1), Chain); 1177 } 1178 1179 void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, 1180 SDValue &Hi) { 1181 assert(N->getValueType(0) == MVT::ppcf128 && "Unsupported XINT_TO_FP!"); 1182 EVT VT = N->getValueType(0); 1183 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 1184 SDValue Src = N->getOperand(0); 1185 EVT SrcVT = Src.getValueType(); 1186 bool isSigned = N->getOpcode() == ISD::SINT_TO_FP; 1187 SDLoc dl(N); 1188 1189 // First do an SINT_TO_FP, whether the original was signed or unsigned. 1190 // When promoting partial word types to i32 we must honor the signedness, 1191 // though. 1192 if (SrcVT.bitsLE(MVT::i32)) { 1193 // The integer can be represented exactly in an f64. 1194 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl, 1195 MVT::i32, Src); 1196 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT), 1197 APInt(NVT.getSizeInBits(), 0)), NVT); 1198 Hi = DAG.getNode(ISD::SINT_TO_FP, dl, NVT, Src); 1199 } else { 1200 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 1201 if (SrcVT.bitsLE(MVT::i64)) { 1202 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl, 1203 MVT::i64, Src); 1204 LC = RTLIB::SINTTOFP_I64_PPCF128; 1205 } else if (SrcVT.bitsLE(MVT::i128)) { 1206 Src = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i128, Src); 1207 LC = RTLIB::SINTTOFP_I128_PPCF128; 1208 } 1209 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!"); 1210 1211 Hi = TLI.makeLibCall(DAG, LC, VT, &Src, 1, true, dl).first; 1212 GetPairElements(Hi, Lo, Hi); 1213 } 1214 1215 if (isSigned) 1216 return; 1217 1218 // Unsigned - fix up the SINT_TO_FP value just calculated. 1219 Hi = DAG.getNode(ISD::BUILD_PAIR, dl, VT, Lo, Hi); 1220 SrcVT = Src.getValueType(); 1221 1222 // x>=0 ? (ppcf128)(iN)x : (ppcf128)(iN)x + 2^N; N=32,64,128. 1223 static const uint64_t TwoE32[] = { 0x41f0000000000000LL, 0 }; 1224 static const uint64_t TwoE64[] = { 0x43f0000000000000LL, 0 }; 1225 static const uint64_t TwoE128[] = { 0x47f0000000000000LL, 0 }; 1226 ArrayRef<uint64_t> Parts; 1227 1228 switch (SrcVT.getSimpleVT().SimpleTy) { 1229 default: 1230 llvm_unreachable("Unsupported UINT_TO_FP!"); 1231 case MVT::i32: 1232 Parts = TwoE32; 1233 break; 1234 case MVT::i64: 1235 Parts = TwoE64; 1236 break; 1237 case MVT::i128: 1238 Parts = TwoE128; 1239 break; 1240 } 1241 1242 Lo = DAG.getNode(ISD::FADD, dl, VT, Hi, 1243 DAG.getConstantFP(APFloat(APFloat::PPCDoubleDouble, 1244 APInt(128, Parts)), 1245 MVT::ppcf128)); 1246 Lo = DAG.getSelectCC(dl, Src, DAG.getConstant(0, SrcVT), 1247 Lo, Hi, ISD::SETLT); 1248 GetPairElements(Lo, Lo, Hi); 1249 } 1250 1251 1252 //===----------------------------------------------------------------------===// 1253 // Float Operand Expansion 1254 //===----------------------------------------------------------------------===// 1255 1256 /// ExpandFloatOperand - This method is called when the specified operand of the 1257 /// specified node is found to need expansion. At this point, all of the result 1258 /// types of the node are known to be legal, but other operands of the node may 1259 /// need promotion or expansion as well as the specified one. 1260 bool DAGTypeLegalizer::ExpandFloatOperand(SDNode *N, unsigned OpNo) { 1261 DEBUG(dbgs() << "Expand float operand: "; N->dump(&DAG); dbgs() << "\n"); 1262 SDValue Res = SDValue(); 1263 1264 // See if the target wants to custom expand this node. 1265 if (CustomLowerNode(N, N->getOperand(OpNo).getValueType(), false)) 1266 return false; 1267 1268 switch (N->getOpcode()) { 1269 default: 1270 #ifndef NDEBUG 1271 dbgs() << "ExpandFloatOperand Op #" << OpNo << ": "; 1272 N->dump(&DAG); dbgs() << "\n"; 1273 #endif 1274 llvm_unreachable("Do not know how to expand this operator's operand!"); 1275 1276 case ISD::BITCAST: Res = ExpandOp_BITCAST(N); break; 1277 case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break; 1278 case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break; 1279 1280 case ISD::BR_CC: Res = ExpandFloatOp_BR_CC(N); break; 1281 case ISD::FCOPYSIGN: Res = ExpandFloatOp_FCOPYSIGN(N); break; 1282 case ISD::FP_ROUND: Res = ExpandFloatOp_FP_ROUND(N); break; 1283 case ISD::FP_TO_SINT: Res = ExpandFloatOp_FP_TO_SINT(N); break; 1284 case ISD::FP_TO_UINT: Res = ExpandFloatOp_FP_TO_UINT(N); break; 1285 case ISD::SELECT_CC: Res = ExpandFloatOp_SELECT_CC(N); break; 1286 case ISD::SETCC: Res = ExpandFloatOp_SETCC(N); break; 1287 case ISD::STORE: Res = ExpandFloatOp_STORE(cast<StoreSDNode>(N), 1288 OpNo); break; 1289 } 1290 1291 // If the result is null, the sub-method took care of registering results etc. 1292 if (!Res.getNode()) return false; 1293 1294 // If the result is N, the sub-method updated N in place. Tell the legalizer 1295 // core about this. 1296 if (Res.getNode() == N) 1297 return true; 1298 1299 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 1300 "Invalid operand expansion"); 1301 1302 ReplaceValueWith(SDValue(N, 0), Res); 1303 return false; 1304 } 1305 1306 /// FloatExpandSetCCOperands - Expand the operands of a comparison. This code 1307 /// is shared among BR_CC, SELECT_CC, and SETCC handlers. 1308 void DAGTypeLegalizer::FloatExpandSetCCOperands(SDValue &NewLHS, 1309 SDValue &NewRHS, 1310 ISD::CondCode &CCCode, 1311 SDLoc dl) { 1312 SDValue LHSLo, LHSHi, RHSLo, RHSHi; 1313 GetExpandedFloat(NewLHS, LHSLo, LHSHi); 1314 GetExpandedFloat(NewRHS, RHSLo, RHSHi); 1315 1316 assert(NewLHS.getValueType() == MVT::ppcf128 && "Unsupported setcc type!"); 1317 1318 // FIXME: This generated code sucks. We want to generate 1319 // FCMPU crN, hi1, hi2 1320 // BNE crN, L: 1321 // FCMPU crN, lo1, lo2 1322 // The following can be improved, but not that much. 1323 SDValue Tmp1, Tmp2, Tmp3; 1324 Tmp1 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()), 1325 LHSHi, RHSHi, ISD::SETOEQ); 1326 Tmp2 = DAG.getSetCC(dl, getSetCCResultType(LHSLo.getValueType()), 1327 LHSLo, RHSLo, CCCode); 1328 Tmp3 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2); 1329 Tmp1 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()), 1330 LHSHi, RHSHi, ISD::SETUNE); 1331 Tmp2 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()), 1332 LHSHi, RHSHi, CCCode); 1333 Tmp1 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2); 1334 NewLHS = DAG.getNode(ISD::OR, dl, Tmp1.getValueType(), Tmp1, Tmp3); 1335 NewRHS = SDValue(); // LHS is the result, not a compare. 1336 } 1337 1338 SDValue DAGTypeLegalizer::ExpandFloatOp_BR_CC(SDNode *N) { 1339 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); 1340 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); 1341 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N)); 1342 1343 // If ExpandSetCCOperands returned a scalar, we need to compare the result 1344 // against zero to select between true and false values. 1345 if (!NewRHS.getNode()) { 1346 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 1347 CCCode = ISD::SETNE; 1348 } 1349 1350 // Update N to have the operands specified. 1351 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0), 1352 DAG.getCondCode(CCCode), NewLHS, NewRHS, 1353 N->getOperand(4)), 0); 1354 } 1355 1356 SDValue DAGTypeLegalizer::ExpandFloatOp_FCOPYSIGN(SDNode *N) { 1357 assert(N->getOperand(1).getValueType() == MVT::ppcf128 && 1358 "Logic only correct for ppcf128!"); 1359 SDValue Lo, Hi; 1360 GetExpandedFloat(N->getOperand(1), Lo, Hi); 1361 // The ppcf128 value is providing only the sign; take it from the 1362 // higher-order double (which must have the larger magnitude). 1363 return DAG.getNode(ISD::FCOPYSIGN, SDLoc(N), 1364 N->getValueType(0), N->getOperand(0), Hi); 1365 } 1366 1367 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_ROUND(SDNode *N) { 1368 assert(N->getOperand(0).getValueType() == MVT::ppcf128 && 1369 "Logic only correct for ppcf128!"); 1370 SDValue Lo, Hi; 1371 GetExpandedFloat(N->getOperand(0), Lo, Hi); 1372 // Round it the rest of the way (e.g. to f32) if needed. 1373 return DAG.getNode(ISD::FP_ROUND, SDLoc(N), 1374 N->getValueType(0), Hi, N->getOperand(1)); 1375 } 1376 1377 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) { 1378 EVT RVT = N->getValueType(0); 1379 SDLoc dl(N); 1380 1381 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on 1382 // PPC (the libcall is not available). FIXME: Do this in a less hacky way. 1383 if (RVT == MVT::i32) { 1384 assert(N->getOperand(0).getValueType() == MVT::ppcf128 && 1385 "Logic only correct for ppcf128!"); 1386 SDValue Res = DAG.getNode(ISD::FP_ROUND_INREG, dl, MVT::ppcf128, 1387 N->getOperand(0), DAG.getValueType(MVT::f64)); 1388 Res = DAG.getNode(ISD::FP_ROUND, dl, MVT::f64, Res, 1389 DAG.getIntPtrConstant(1)); 1390 return DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, Res); 1391 } 1392 1393 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT); 1394 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!"); 1395 return TLI.makeLibCall(DAG, LC, RVT, &N->getOperand(0), 1, false, dl).first; 1396 } 1397 1398 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) { 1399 EVT RVT = N->getValueType(0); 1400 SDLoc dl(N); 1401 1402 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on 1403 // PPC (the libcall is not available). FIXME: Do this in a less hacky way. 1404 if (RVT == MVT::i32) { 1405 assert(N->getOperand(0).getValueType() == MVT::ppcf128 && 1406 "Logic only correct for ppcf128!"); 1407 const uint64_t TwoE31[] = {0x41e0000000000000LL, 0}; 1408 APFloat APF = APFloat(APFloat::PPCDoubleDouble, APInt(128, TwoE31)); 1409 SDValue Tmp = DAG.getConstantFP(APF, MVT::ppcf128); 1410 // X>=2^31 ? (int)(X-2^31)+0x80000000 : (int)X 1411 // FIXME: generated code sucks. 1412 return DAG.getSelectCC(dl, N->getOperand(0), Tmp, 1413 DAG.getNode(ISD::ADD, dl, MVT::i32, 1414 DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, 1415 DAG.getNode(ISD::FSUB, dl, 1416 MVT::ppcf128, 1417 N->getOperand(0), 1418 Tmp)), 1419 DAG.getConstant(0x80000000, MVT::i32)), 1420 DAG.getNode(ISD::FP_TO_SINT, dl, 1421 MVT::i32, N->getOperand(0)), 1422 ISD::SETGE); 1423 } 1424 1425 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT); 1426 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!"); 1427 return TLI.makeLibCall(DAG, LC, N->getValueType(0), &N->getOperand(0), 1, 1428 false, dl).first; 1429 } 1430 1431 SDValue DAGTypeLegalizer::ExpandFloatOp_SELECT_CC(SDNode *N) { 1432 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 1433 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); 1434 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N)); 1435 1436 // If ExpandSetCCOperands returned a scalar, we need to compare the result 1437 // against zero to select between true and false values. 1438 if (!NewRHS.getNode()) { 1439 NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 1440 CCCode = ISD::SETNE; 1441 } 1442 1443 // Update N to have the operands specified. 1444 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 1445 N->getOperand(2), N->getOperand(3), 1446 DAG.getCondCode(CCCode)), 0); 1447 } 1448 1449 SDValue DAGTypeLegalizer::ExpandFloatOp_SETCC(SDNode *N) { 1450 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 1451 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); 1452 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N)); 1453 1454 // If ExpandSetCCOperands returned a scalar, use it. 1455 if (!NewRHS.getNode()) { 1456 assert(NewLHS.getValueType() == N->getValueType(0) && 1457 "Unexpected setcc expansion!"); 1458 return NewLHS; 1459 } 1460 1461 // Otherwise, update N to have the operands specified. 1462 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS, 1463 DAG.getCondCode(CCCode)), 0); 1464 } 1465 1466 SDValue DAGTypeLegalizer::ExpandFloatOp_STORE(SDNode *N, unsigned OpNo) { 1467 if (ISD::isNormalStore(N)) 1468 return ExpandOp_NormalStore(N, OpNo); 1469 1470 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 1471 assert(OpNo == 1 && "Can only expand the stored value so far"); 1472 StoreSDNode *ST = cast<StoreSDNode>(N); 1473 1474 SDValue Chain = ST->getChain(); 1475 SDValue Ptr = ST->getBasePtr(); 1476 1477 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 1478 ST->getValue().getValueType()); 1479 assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1480 assert(ST->getMemoryVT().bitsLE(NVT) && "Float type not round?"); 1481 (void)NVT; 1482 1483 SDValue Lo, Hi; 1484 GetExpandedOp(ST->getValue(), Lo, Hi); 1485 1486 return DAG.getTruncStore(Chain, SDLoc(N), Hi, Ptr, 1487 ST->getMemoryVT(), ST->getMemOperand()); 1488 } 1489
