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