1 //===-------- LegalizeFloatTypes.cpp - Legalization of float types --------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
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.
20 //===----------------------------------------------------------------------===//
22 #include "LegalizeTypes.h"
23 #include "llvm/Support/ErrorHandling.h"
24 #include "llvm/Support/raw_ostream.h"
27 #define DEBUG_TYPE "legalize-types"
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) {
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;
45 //===----------------------------------------------------------------------===//
46 // Convert Float Results to Integer for Non-HW-supported Operations.
47 //===----------------------------------------------------------------------===//
49 bool DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) {
50 DEBUG(dbgs() << "Soften float result " << ResNo << ": "; N->dump(&DAG);
52 SDValue R = SDValue();
54 switch (N->getOpcode()) {
57 dbgs() << "SoftenFloatResult #" << ResNo << ": ";
58 N->dump(&DAG); dbgs() << "\n";
60 llvm_unreachable("Do not know how to soften the result of this operator!");
63 case ISD::CopyFromReg:
65 assert(isLegalInHWReg(N->getValueType(ResNo)) &&
66 "Unsupported SoftenFloatRes opcode!");
67 // Only when isLegalInHWReg, we can skip check of the operands.
68 R = SDValue(N, ResNo);
70 case ISD::MERGE_VALUES:R = SoftenFloatRes_MERGE_VALUES(N, ResNo); break;
71 case ISD::BITCAST: R = SoftenFloatRes_BITCAST(N, ResNo); break;
72 case ISD::BUILD_PAIR: R = SoftenFloatRes_BUILD_PAIR(N); break;
73 case ISD::ConstantFP: R = SoftenFloatRes_ConstantFP(N, ResNo); break;
74 case ISD::EXTRACT_VECTOR_ELT:
75 R = SoftenFloatRes_EXTRACT_VECTOR_ELT(N, ResNo); break;
76 case ISD::FABS: R = SoftenFloatRes_FABS(N, ResNo); break;
77 case ISD::FMINNUM: R = SoftenFloatRes_FMINNUM(N); break;
78 case ISD::FMAXNUM: R = SoftenFloatRes_FMAXNUM(N); break;
79 case ISD::FADD: R = SoftenFloatRes_FADD(N); break;
80 case ISD::FCEIL: R = SoftenFloatRes_FCEIL(N); break;
81 case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N, ResNo); break;
82 case ISD::FCOS: R = SoftenFloatRes_FCOS(N); break;
83 case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break;
84 case ISD::FEXP: R = SoftenFloatRes_FEXP(N); break;
85 case ISD::FEXP2: R = SoftenFloatRes_FEXP2(N); break;
86 case ISD::FFLOOR: R = SoftenFloatRes_FFLOOR(N); break;
87 case ISD::FLOG: R = SoftenFloatRes_FLOG(N); break;
88 case ISD::FLOG2: R = SoftenFloatRes_FLOG2(N); break;
89 case ISD::FLOG10: R = SoftenFloatRes_FLOG10(N); break;
90 case ISD::FMA: R = SoftenFloatRes_FMA(N); break;
91 case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break;
92 case ISD::FNEARBYINT: R = SoftenFloatRes_FNEARBYINT(N); break;
93 case ISD::FNEG: R = SoftenFloatRes_FNEG(N, ResNo); break;
94 case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break;
95 case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break;
96 case ISD::FP16_TO_FP: R = SoftenFloatRes_FP16_TO_FP(N); break;
97 case ISD::FPOW: R = SoftenFloatRes_FPOW(N); break;
98 case ISD::FPOWI: R = SoftenFloatRes_FPOWI(N); break;
99 case ISD::FREM: R = SoftenFloatRes_FREM(N); break;
100 case ISD::FRINT: R = SoftenFloatRes_FRINT(N); break;
101 case ISD::FROUND: R = SoftenFloatRes_FROUND(N); break;
102 case ISD::FSIN: R = SoftenFloatRes_FSIN(N); break;
103 case ISD::FSQRT: R = SoftenFloatRes_FSQRT(N); break;
104 case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break;
105 case ISD::FTRUNC: R = SoftenFloatRes_FTRUNC(N); break;
106 case ISD::LOAD: R = SoftenFloatRes_LOAD(N, ResNo); break;
107 case ISD::SELECT: R = SoftenFloatRes_SELECT(N, ResNo); break;
108 case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N, ResNo); break;
109 case ISD::SINT_TO_FP:
110 case ISD::UINT_TO_FP: R = SoftenFloatRes_XINT_TO_FP(N); break;
111 case ISD::UNDEF: R = SoftenFloatRes_UNDEF(N); break;
112 case ISD::VAARG: R = SoftenFloatRes_VAARG(N); break;
115 // If R is null, the sub-method took care of registering the result.
117 SetSoftenedFloat(SDValue(N, ResNo), R);
118 ReplaceSoftenFloatResult(N, ResNo, R);
120 // Return true only if the node is changed,
121 // assuming that the operands are also converted when necessary.
122 // Otherwise, return false to tell caller to scan operands.
123 return R.getNode() && R.getNode() != N;
126 SDValue DAGTypeLegalizer::SoftenFloatRes_BITCAST(SDNode *N, unsigned ResNo) {
127 if (isLegalInHWReg(N->getValueType(ResNo)))
128 return SDValue(N, ResNo);
129 return BitConvertToInteger(N->getOperand(0));
132 SDValue DAGTypeLegalizer::SoftenFloatRes_MERGE_VALUES(SDNode *N,
134 SDValue Op = DisintegrateMERGE_VALUES(N, ResNo);
135 return BitConvertToInteger(Op);
138 SDValue DAGTypeLegalizer::SoftenFloatRes_BUILD_PAIR(SDNode *N) {
139 // Convert the inputs to integers, and build a new pair out of them.
140 return DAG.getNode(ISD::BUILD_PAIR, SDLoc(N),
141 TLI.getTypeToTransformTo(*DAG.getContext(),
143 BitConvertToInteger(N->getOperand(0)),
144 BitConvertToInteger(N->getOperand(1)));
147 SDValue DAGTypeLegalizer::SoftenFloatRes_ConstantFP(SDNode *N, unsigned ResNo) {
148 // When LegalInHWReg, we can load better from the constant pool.
149 if (isLegalInHWReg(N->getValueType(ResNo)))
150 return SDValue(N, ResNo);
151 ConstantFPSDNode *CN = cast<ConstantFPSDNode>(N);
152 // In ppcf128, the high 64 bits are always first in memory regardless
153 // of Endianness. LLVM's APFloat representation is not Endian sensitive,
154 // and so always converts into a 128-bit APInt in a non-Endian-sensitive
155 // way. However, APInt's are serialized in an Endian-sensitive fashion,
156 // so on big-Endian targets, the two doubles are output in the wrong
157 // order. Fix this by manually flipping the order of the high 64 bits
158 // and the low 64 bits here.
159 if (DAG.getDataLayout().isBigEndian() &&
160 CN->getValueType(0).getSimpleVT() == llvm::MVT::ppcf128) {
161 uint64_t words[2] = { CN->getValueAPF().bitcastToAPInt().getRawData()[1],
162 CN->getValueAPF().bitcastToAPInt().getRawData()[0] };
163 APInt Val(128, words);
164 return DAG.getConstant(Val, SDLoc(CN),
165 TLI.getTypeToTransformTo(*DAG.getContext(),
166 CN->getValueType(0)));
168 return DAG.getConstant(CN->getValueAPF().bitcastToAPInt(), SDLoc(CN),
169 TLI.getTypeToTransformTo(*DAG.getContext(),
170 CN->getValueType(0)));
174 SDValue DAGTypeLegalizer::SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N, unsigned ResNo) {
175 // When LegalInHWReg, keep the extracted value in register.
176 if (isLegalInHWReg(N->getValueType(ResNo)))
177 return SDValue(N, ResNo);
178 SDValue NewOp = BitConvertVectorToIntegerVector(N->getOperand(0));
179 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SDLoc(N),
180 NewOp.getValueType().getVectorElementType(),
181 NewOp, N->getOperand(1));
184 SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N, unsigned ResNo) {
185 // When LegalInHWReg, FABS can be implemented as native bitwise operations.
186 if (isLegalInHWReg(N->getValueType(ResNo)))
187 return SDValue(N, ResNo);
188 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
189 unsigned Size = NVT.getSizeInBits();
191 // Mask = ~(1 << (Size-1))
192 APInt API = APInt::getAllOnesValue(Size);
193 API.clearBit(Size - 1);
194 SDValue Mask = DAG.getConstant(API, SDLoc(N), NVT);
195 SDValue Op = GetSoftenedFloat(N->getOperand(0));
196 return DAG.getNode(ISD::AND, SDLoc(N), NVT, Op, Mask);
199 SDValue DAGTypeLegalizer::SoftenFloatRes_FMINNUM(SDNode *N) {
200 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
201 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
202 GetSoftenedFloat(N->getOperand(1)) };
203 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
208 RTLIB::FMIN_PPCF128),
209 NVT, Ops, false, SDLoc(N)).first;
212 SDValue DAGTypeLegalizer::SoftenFloatRes_FMAXNUM(SDNode *N) {
213 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
214 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
215 GetSoftenedFloat(N->getOperand(1)) };
216 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
221 RTLIB::FMAX_PPCF128),
222 NVT, Ops, false, SDLoc(N)).first;
225 SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) {
226 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
227 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
228 GetSoftenedFloat(N->getOperand(1)) };
229 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
235 NVT, Ops, false, SDLoc(N)).first;
238 SDValue DAGTypeLegalizer::SoftenFloatRes_FCEIL(SDNode *N) {
239 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
240 SDValue Op = GetSoftenedFloat(N->getOperand(0));
241 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
246 RTLIB::CEIL_PPCF128),
247 NVT, Op, false, SDLoc(N)).first;
250 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N, unsigned ResNo) {
251 // When LegalInHWReg, FCOPYSIGN can be implemented as native bitwise operations.
252 if (isLegalInHWReg(N->getValueType(ResNo)))
253 return SDValue(N, ResNo);
254 SDValue LHS = GetSoftenedFloat(N->getOperand(0));
255 SDValue RHS = BitConvertToInteger(N->getOperand(1));
258 EVT LVT = LHS.getValueType();
259 EVT RVT = RHS.getValueType();
261 unsigned LSize = LVT.getSizeInBits();
262 unsigned RSize = RVT.getSizeInBits();
264 // First get the sign bit of second operand.
265 SDValue SignBit = DAG.getNode(
266 ISD::SHL, dl, RVT, DAG.getConstant(1, dl, RVT),
267 DAG.getConstant(RSize - 1, dl,
268 TLI.getShiftAmountTy(RVT, DAG.getDataLayout())));
269 SignBit = DAG.getNode(ISD::AND, dl, RVT, RHS, SignBit);
271 // Shift right or sign-extend it if the two operands have different types.
272 int SizeDiff = RVT.getSizeInBits() - LVT.getSizeInBits();
275 DAG.getNode(ISD::SRL, dl, RVT, SignBit,
276 DAG.getConstant(SizeDiff, dl,
277 TLI.getShiftAmountTy(SignBit.getValueType(),
278 DAG.getDataLayout())));
279 SignBit = DAG.getNode(ISD::TRUNCATE, dl, LVT, SignBit);
280 } else if (SizeDiff < 0) {
281 SignBit = DAG.getNode(ISD::ANY_EXTEND, dl, LVT, SignBit);
283 DAG.getNode(ISD::SHL, dl, LVT, SignBit,
284 DAG.getConstant(-SizeDiff, dl,
285 TLI.getShiftAmountTy(SignBit.getValueType(),
286 DAG.getDataLayout())));
289 // Clear the sign bit of the first operand.
290 SDValue Mask = DAG.getNode(
291 ISD::SHL, dl, LVT, DAG.getConstant(1, dl, LVT),
292 DAG.getConstant(LSize - 1, dl,
293 TLI.getShiftAmountTy(LVT, DAG.getDataLayout())));
294 Mask = DAG.getNode(ISD::SUB, dl, LVT, Mask, DAG.getConstant(1, dl, LVT));
295 LHS = DAG.getNode(ISD::AND, dl, LVT, LHS, Mask);
297 // Or the value with the sign bit.
298 return DAG.getNode(ISD::OR, dl, LVT, LHS, SignBit);
301 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) {
302 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
303 SDValue Op = GetSoftenedFloat(N->getOperand(0));
304 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
310 NVT, Op, false, SDLoc(N)).first;
313 SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
314 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
315 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
316 GetSoftenedFloat(N->getOperand(1)) };
317 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
323 NVT, Ops, false, SDLoc(N)).first;
326 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) {
327 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
328 SDValue Op = GetSoftenedFloat(N->getOperand(0));
329 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
335 NVT, Op, false, SDLoc(N)).first;
338 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) {
339 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
340 SDValue Op = GetSoftenedFloat(N->getOperand(0));
341 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
346 RTLIB::EXP2_PPCF128),
347 NVT, Op, false, SDLoc(N)).first;
350 SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) {
351 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
352 SDValue Op = GetSoftenedFloat(N->getOperand(0));
353 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
358 RTLIB::FLOOR_PPCF128),
359 NVT, Op, false, SDLoc(N)).first;
362 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) {
363 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
364 SDValue Op = GetSoftenedFloat(N->getOperand(0));
365 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
371 NVT, Op, false, SDLoc(N)).first;
374 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) {
375 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
376 SDValue Op = GetSoftenedFloat(N->getOperand(0));
377 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
382 RTLIB::LOG2_PPCF128),
383 NVT, Op, false, SDLoc(N)).first;
386 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) {
387 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
388 SDValue Op = GetSoftenedFloat(N->getOperand(0));
389 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
394 RTLIB::LOG10_PPCF128),
395 NVT, Op, false, SDLoc(N)).first;
398 SDValue DAGTypeLegalizer::SoftenFloatRes_FMA(SDNode *N) {
399 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
400 SDValue Ops[3] = { GetSoftenedFloat(N->getOperand(0)),
401 GetSoftenedFloat(N->getOperand(1)),
402 GetSoftenedFloat(N->getOperand(2)) };
403 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
409 NVT, Ops, false, SDLoc(N)).first;
412 SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
413 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
414 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
415 GetSoftenedFloat(N->getOperand(1)) };
416 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
422 NVT, Ops, false, SDLoc(N)).first;
425 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) {
426 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
427 SDValue Op = GetSoftenedFloat(N->getOperand(0));
428 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
429 RTLIB::NEARBYINT_F32,
430 RTLIB::NEARBYINT_F64,
431 RTLIB::NEARBYINT_F80,
432 RTLIB::NEARBYINT_F128,
433 RTLIB::NEARBYINT_PPCF128),
434 NVT, Op, false, SDLoc(N)).first;
437 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N, unsigned ResNo) {
438 // When LegalInHWReg, FNEG can be implemented as native bitwise operations.
439 if (isLegalInHWReg(N->getValueType(ResNo)))
440 return SDValue(N, ResNo);
441 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
443 // Expand Y = FNEG(X) -> Y = SUB -0.0, X
444 SDValue Ops[2] = { DAG.getConstantFP(-0.0, dl, N->getValueType(0)),
445 GetSoftenedFloat(N->getOperand(0)) };
446 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
452 NVT, Ops, false, dl).first;
455 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
456 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
457 SDValue Op = N->getOperand(0);
459 // There's only a libcall for f16 -> f32, so proceed in two stages. Also, it's
460 // entirely possible for both f16 and f32 to be legal, so use the fully
461 // hard-float FP_EXTEND rather than FP16_TO_FP.
462 if (Op.getValueType() == MVT::f16 && N->getValueType(0) != MVT::f32) {
463 Op = DAG.getNode(ISD::FP_EXTEND, SDLoc(N), MVT::f32, Op);
464 if (getTypeAction(MVT::f32) == TargetLowering::TypeSoftenFloat)
465 AddToWorklist(Op.getNode());
468 if (getTypeAction(Op.getValueType()) == TargetLowering::TypePromoteFloat) {
469 Op = GetPromotedFloat(Op);
470 // If the promotion did the FP_EXTEND to the destination type for us,
471 // there's nothing left to do here.
472 if (Op.getValueType() == N->getValueType(0)) {
473 return BitConvertToInteger(Op);
477 RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0));
478 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
479 return TLI.makeLibCall(DAG, LC, NVT, Op, false, SDLoc(N)).first;
482 // FIXME: Should we just use 'normal' FP_EXTEND / FP_TRUNC instead of special
484 SDValue DAGTypeLegalizer::SoftenFloatRes_FP16_TO_FP(SDNode *N) {
485 EVT MidVT = TLI.getTypeToTransformTo(*DAG.getContext(), MVT::f32);
486 SDValue Op = N->getOperand(0);
487 SDValue Res32 = TLI.makeLibCall(DAG, RTLIB::FPEXT_F16_F32, MidVT, Op,
488 false, SDLoc(N)).first;
489 if (N->getValueType(0) == MVT::f32)
492 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
493 RTLIB::Libcall LC = RTLIB::getFPEXT(MVT::f32, N->getValueType(0));
494 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
495 return TLI.makeLibCall(DAG, LC, NVT, Res32, false, SDLoc(N)).first;
498 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) {
499 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
500 SDValue Op = N->getOperand(0);
501 if (N->getValueType(0) == MVT::f16) {
502 // Semi-soften first, to FP_TO_FP16, so that targets which support f16 as a
503 // storage-only type get a chance to select things.
504 return DAG.getNode(ISD::FP_TO_FP16, SDLoc(N), NVT, Op);
507 RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0));
508 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!");
509 return TLI.makeLibCall(DAG, LC, NVT, Op, false, SDLoc(N)).first;
512 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) {
513 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
514 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
515 GetSoftenedFloat(N->getOperand(1)) };
516 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
522 NVT, Ops, false, SDLoc(N)).first;
525 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) {
526 assert(N->getOperand(1).getValueType() == MVT::i32 &&
527 "Unsupported power type!");
528 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
529 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) };
530 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
535 RTLIB::POWI_PPCF128),
536 NVT, Ops, false, SDLoc(N)).first;
539 SDValue DAGTypeLegalizer::SoftenFloatRes_FREM(SDNode *N) {
540 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
541 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
542 GetSoftenedFloat(N->getOperand(1)) };
543 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
549 NVT, Ops, false, SDLoc(N)).first;
552 SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) {
553 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
554 SDValue Op = GetSoftenedFloat(N->getOperand(0));
555 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
560 RTLIB::RINT_PPCF128),
561 NVT, Op, false, SDLoc(N)).first;
564 SDValue DAGTypeLegalizer::SoftenFloatRes_FROUND(SDNode *N) {
565 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
566 SDValue Op = GetSoftenedFloat(N->getOperand(0));
567 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
572 RTLIB::ROUND_PPCF128),
573 NVT, Op, false, SDLoc(N)).first;
576 SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) {
577 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
578 SDValue Op = GetSoftenedFloat(N->getOperand(0));
579 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
585 NVT, Op, false, SDLoc(N)).first;
588 SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) {
589 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
590 SDValue Op = GetSoftenedFloat(N->getOperand(0));
591 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
596 RTLIB::SQRT_PPCF128),
597 NVT, Op, false, SDLoc(N)).first;
600 SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
601 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
602 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
603 GetSoftenedFloat(N->getOperand(1)) };
604 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
610 NVT, Ops, false, SDLoc(N)).first;
613 SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) {
614 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
615 if (N->getValueType(0) == MVT::f16)
616 return DAG.getNode(ISD::FP_TO_FP16, SDLoc(N), NVT, N->getOperand(0));
618 SDValue Op = GetSoftenedFloat(N->getOperand(0));
619 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
624 RTLIB::TRUNC_PPCF128),
625 NVT, Op, false, SDLoc(N)).first;
628 SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N, unsigned ResNo) {
629 bool LegalInHWReg = isLegalInHWReg(N->getValueType(ResNo));
630 LoadSDNode *L = cast<LoadSDNode>(N);
631 EVT VT = N->getValueType(0);
632 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
636 L->getMemOperand()->getFlags() &
637 ~(MachineMemOperand::MOInvariant | MachineMemOperand::MODereferenceable);
639 if (L->getExtensionType() == ISD::NON_EXTLOAD) {
640 NewL = DAG.getLoad(L->getAddressingMode(), L->getExtensionType(), NVT, dl,
641 L->getChain(), L->getBasePtr(), L->getOffset(),
642 L->getPointerInfo(), NVT, L->getAlignment(), MMOFlags,
644 // Legalized the chain result - switch anything that used the old chain to
646 if (N != NewL.getValue(1).getNode())
647 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
651 // Do a non-extending load followed by FP_EXTEND.
652 NewL = DAG.getLoad(L->getAddressingMode(), ISD::NON_EXTLOAD, L->getMemoryVT(),
653 dl, L->getChain(), L->getBasePtr(), L->getOffset(),
654 L->getPointerInfo(), L->getMemoryVT(), L->getAlignment(),
655 MMOFlags, L->getAAInfo());
656 // Legalized the chain result - switch anything that used the old chain to
658 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
659 auto ExtendNode = DAG.getNode(ISD::FP_EXTEND, dl, VT, NewL);
662 return BitConvertToInteger(ExtendNode);
665 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N, unsigned ResNo) {
666 if (isLegalInHWReg(N->getValueType(ResNo)))
667 return SDValue(N, ResNo);
668 SDValue LHS = GetSoftenedFloat(N->getOperand(1));
669 SDValue RHS = GetSoftenedFloat(N->getOperand(2));
670 return DAG.getSelect(SDLoc(N),
671 LHS.getValueType(), N->getOperand(0), LHS, RHS);
674 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT_CC(SDNode *N, unsigned ResNo) {
675 if (isLegalInHWReg(N->getValueType(ResNo)))
676 return SDValue(N, ResNo);
677 SDValue LHS = GetSoftenedFloat(N->getOperand(2));
678 SDValue RHS = GetSoftenedFloat(N->getOperand(3));
679 return DAG.getNode(ISD::SELECT_CC, SDLoc(N),
680 LHS.getValueType(), N->getOperand(0),
681 N->getOperand(1), LHS, RHS, N->getOperand(4));
684 SDValue DAGTypeLegalizer::SoftenFloatRes_UNDEF(SDNode *N) {
685 return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(),
686 N->getValueType(0)));
689 SDValue DAGTypeLegalizer::SoftenFloatRes_VAARG(SDNode *N) {
690 SDValue Chain = N->getOperand(0); // Get the chain.
691 SDValue Ptr = N->getOperand(1); // Get the pointer.
692 EVT VT = N->getValueType(0);
693 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
697 NewVAARG = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2),
698 N->getConstantOperandVal(3));
700 // Legalized the chain result - switch anything that used the old chain to
702 if (N != NewVAARG.getValue(1).getNode())
703 ReplaceValueWith(SDValue(N, 1), NewVAARG.getValue(1));
707 SDValue DAGTypeLegalizer::SoftenFloatRes_XINT_TO_FP(SDNode *N) {
708 bool Signed = N->getOpcode() == ISD::SINT_TO_FP;
709 EVT SVT = N->getOperand(0).getValueType();
710 EVT RVT = N->getValueType(0);
714 // If the input is not legal, eg: i1 -> fp, then it needs to be promoted to
715 // a larger type, eg: i8 -> fp. Even if it is legal, no libcall may exactly
716 // match. Look for an appropriate libcall.
717 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
718 for (unsigned t = MVT::FIRST_INTEGER_VALUETYPE;
719 t <= MVT::LAST_INTEGER_VALUETYPE && LC == RTLIB::UNKNOWN_LIBCALL; ++t) {
720 NVT = (MVT::SimpleValueType)t;
721 // The source needs to big enough to hold the operand.
723 LC = Signed ? RTLIB::getSINTTOFP(NVT, RVT):RTLIB::getUINTTOFP (NVT, RVT);
725 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
727 // Sign/zero extend the argument if the libcall takes a larger type.
728 SDValue Op = DAG.getNode(Signed ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
729 NVT, N->getOperand(0));
730 return TLI.makeLibCall(DAG, LC,
731 TLI.getTypeToTransformTo(*DAG.getContext(), RVT),
732 Op, Signed, dl).first;
736 //===----------------------------------------------------------------------===//
737 // Convert Float Operand to Integer for Non-HW-supported Operations.
738 //===----------------------------------------------------------------------===//
740 bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) {
741 DEBUG(dbgs() << "Soften float operand " << OpNo << ": "; N->dump(&DAG);
743 SDValue Res = SDValue();
745 switch (N->getOpcode()) {
747 if (CanSkipSoftenFloatOperand(N, OpNo))
750 dbgs() << "SoftenFloatOperand Op #" << OpNo << ": ";
751 N->dump(&DAG); dbgs() << "\n";
753 llvm_unreachable("Do not know how to soften this operator's operand!");
755 case ISD::BITCAST: Res = SoftenFloatOp_BITCAST(N); break;
756 case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break;
757 case ISD::FP_EXTEND: Res = SoftenFloatOp_FP_EXTEND(N); break;
758 case ISD::FP_TO_FP16: // Same as FP_ROUND for softening purposes
759 case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break;
760 case ISD::FP_TO_SINT:
761 case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_XINT(N); break;
762 case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break;
763 case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break;
765 Res = SoftenFloatOp_STORE(N, OpNo);
766 // Do not try to analyze or soften this node again if the value is
767 // or can be held in a register. In that case, Res.getNode() should
769 if (Res.getNode() == N &&
770 isLegalInHWReg(N->getOperand(OpNo).getValueType()))
772 // Otherwise, we need to reanalyze and lower the new Res nodes.
776 // If the result is null, the sub-method took care of registering results etc.
777 if (!Res.getNode()) return false;
779 // If the result is N, the sub-method updated N in place. Tell the legalizer
780 // core about this to re-analyze.
781 if (Res.getNode() == N)
784 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
785 "Invalid operand expansion");
787 ReplaceValueWith(SDValue(N, 0), Res);
791 bool DAGTypeLegalizer::CanSkipSoftenFloatOperand(SDNode *N, unsigned OpNo) {
792 if (!isLegalInHWReg(N->getOperand(OpNo).getValueType()))
794 // When the operand type can be kept in registers, SoftenFloatResult
795 // will call ReplaceValueWith to replace all references and we can
796 // skip softening this operand.
797 switch (N->getOperand(OpNo).getOpcode()) {
799 case ISD::ConstantFP:
800 case ISD::CopyFromReg:
810 // For some opcodes, SoftenFloatResult handles all conversion of softening
811 // and replacing operands, so that there is no need to soften operands
812 // again, although such opcode could be scanned for other illegal operands.
813 switch (N->getOpcode()) {
814 case ISD::ConstantFP:
815 case ISD::CopyFromReg:
827 SDValue DAGTypeLegalizer::SoftenFloatOp_BITCAST(SDNode *N) {
828 return DAG.getNode(ISD::BITCAST, SDLoc(N), N->getValueType(0),
829 GetSoftenedFloat(N->getOperand(0)));
832 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_EXTEND(SDNode *N) {
833 // If we get here, the result must be legal but the source illegal.
834 EVT SVT = N->getOperand(0).getValueType();
835 EVT RVT = N->getValueType(0);
836 SDValue Op = GetSoftenedFloat(N->getOperand(0));
839 return DAG.getNode(ISD::FP16_TO_FP, SDLoc(N), RVT, Op);
841 RTLIB::Libcall LC = RTLIB::getFPEXT(SVT, RVT);
842 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND libcall");
844 return TLI.makeLibCall(DAG, LC, RVT, Op, false, SDLoc(N)).first;
848 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) {
849 // We actually deal with the partially-softened FP_TO_FP16 node too, which
850 // returns an i16 so doesn't meet the constraints necessary for FP_ROUND.
851 assert(N->getOpcode() == ISD::FP_ROUND || N->getOpcode() == ISD::FP_TO_FP16);
853 EVT SVT = N->getOperand(0).getValueType();
854 EVT RVT = N->getValueType(0);
855 EVT FloatRVT = N->getOpcode() == ISD::FP_TO_FP16 ? MVT::f16 : RVT;
857 RTLIB::Libcall LC = RTLIB::getFPROUND(SVT, FloatRVT);
858 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND libcall");
860 SDValue Op = GetSoftenedFloat(N->getOperand(0));
861 return TLI.makeLibCall(DAG, LC, RVT, Op, false, SDLoc(N)).first;
864 SDValue DAGTypeLegalizer::SoftenFloatOp_BR_CC(SDNode *N) {
865 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
866 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
868 EVT VT = NewLHS.getValueType();
869 NewLHS = GetSoftenedFloat(NewLHS);
870 NewRHS = GetSoftenedFloat(NewRHS);
871 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N));
873 // If softenSetCCOperands returned a scalar, we need to compare the result
874 // against zero to select between true and false values.
875 if (!NewRHS.getNode()) {
876 NewRHS = DAG.getConstant(0, SDLoc(N), NewLHS.getValueType());
880 // Update N to have the operands specified.
881 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0),
882 DAG.getCondCode(CCCode), NewLHS, NewRHS,
887 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_XINT(SDNode *N) {
888 bool Signed = N->getOpcode() == ISD::FP_TO_SINT;
889 EVT SVT = N->getOperand(0).getValueType();
890 EVT RVT = N->getValueType(0);
894 // If the result is not legal, eg: fp -> i1, then it needs to be promoted to
895 // a larger type, eg: fp -> i32. Even if it is legal, no libcall may exactly
896 // match, eg. we don't have fp -> i8 conversions.
897 // Look for an appropriate libcall.
898 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
899 for (unsigned IntVT = MVT::FIRST_INTEGER_VALUETYPE;
900 IntVT <= MVT::LAST_INTEGER_VALUETYPE && LC == RTLIB::UNKNOWN_LIBCALL;
902 NVT = (MVT::SimpleValueType)IntVT;
903 // The type needs to big enough to hold the result.
905 LC = Signed ? RTLIB::getFPTOSINT(SVT, NVT):RTLIB::getFPTOUINT(SVT, NVT);
907 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_XINT!");
909 SDValue Op = GetSoftenedFloat(N->getOperand(0));
910 SDValue Res = TLI.makeLibCall(DAG, LC, NVT, Op, false, dl).first;
912 // Truncate the result if the libcall returns a larger type.
913 return DAG.getNode(ISD::TRUNCATE, dl, RVT, Res);
916 SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) {
917 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
918 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
920 EVT VT = NewLHS.getValueType();
921 NewLHS = GetSoftenedFloat(NewLHS);
922 NewRHS = GetSoftenedFloat(NewRHS);
923 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N));
925 // If softenSetCCOperands returned a scalar, we need to compare the result
926 // against zero to select between true and false values.
927 if (!NewRHS.getNode()) {
928 NewRHS = DAG.getConstant(0, SDLoc(N), NewLHS.getValueType());
932 // Update N to have the operands specified.
933 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS,
934 N->getOperand(2), N->getOperand(3),
935 DAG.getCondCode(CCCode)),
939 SDValue DAGTypeLegalizer::SoftenFloatOp_SETCC(SDNode *N) {
940 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
941 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
943 EVT VT = NewLHS.getValueType();
944 NewLHS = GetSoftenedFloat(NewLHS);
945 NewRHS = GetSoftenedFloat(NewRHS);
946 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N));
948 // If softenSetCCOperands returned a scalar, use it.
949 if (!NewRHS.getNode()) {
950 assert(NewLHS.getValueType() == N->getValueType(0) &&
951 "Unexpected setcc expansion!");
955 // Otherwise, update N to have the operands specified.
956 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS,
957 DAG.getCondCode(CCCode)),
961 SDValue DAGTypeLegalizer::SoftenFloatOp_STORE(SDNode *N, unsigned OpNo) {
962 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
963 assert(OpNo == 1 && "Can only soften the stored value!");
964 StoreSDNode *ST = cast<StoreSDNode>(N);
965 SDValue Val = ST->getValue();
968 if (ST->isTruncatingStore())
969 // Do an FP_ROUND followed by a non-truncating store.
970 Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, dl, ST->getMemoryVT(),
971 Val, DAG.getIntPtrConstant(0, dl)));
973 Val = GetSoftenedFloat(Val);
975 return DAG.getStore(ST->getChain(), dl, Val, ST->getBasePtr(),
976 ST->getMemOperand());
980 //===----------------------------------------------------------------------===//
981 // Float Result Expansion
982 //===----------------------------------------------------------------------===//
984 /// ExpandFloatResult - This method is called when the specified result of the
985 /// specified node is found to need expansion. At this point, the node may also
986 /// have invalid operands or may have other results that need promotion, we just
987 /// know that (at least) one result needs expansion.
988 void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) {
989 DEBUG(dbgs() << "Expand float result: "; N->dump(&DAG); dbgs() << "\n");
993 // See if the target wants to custom expand this node.
994 if (CustomLowerNode(N, N->getValueType(ResNo), true))
997 switch (N->getOpcode()) {
1000 dbgs() << "ExpandFloatResult #" << ResNo << ": ";
1001 N->dump(&DAG); dbgs() << "\n";
1003 llvm_unreachable("Do not know how to expand the result of this operator!");
1005 case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break;
1006 case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break;
1007 case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break;
1009 case ISD::MERGE_VALUES: ExpandRes_MERGE_VALUES(N, ResNo, Lo, Hi); break;
1010 case ISD::BITCAST: ExpandRes_BITCAST(N, Lo, Hi); break;
1011 case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break;
1012 case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break;
1013 case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break;
1014 case ISD::VAARG: ExpandRes_VAARG(N, Lo, Hi); break;
1016 case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break;
1017 case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break;
1018 case ISD::FMINNUM: ExpandFloatRes_FMINNUM(N, Lo, Hi); break;
1019 case ISD::FMAXNUM: ExpandFloatRes_FMAXNUM(N, Lo, Hi); break;
1020 case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break;
1021 case ISD::FCEIL: ExpandFloatRes_FCEIL(N, Lo, Hi); break;
1022 case ISD::FCOPYSIGN: ExpandFloatRes_FCOPYSIGN(N, Lo, Hi); break;
1023 case ISD::FCOS: ExpandFloatRes_FCOS(N, Lo, Hi); break;
1024 case ISD::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break;
1025 case ISD::FEXP: ExpandFloatRes_FEXP(N, Lo, Hi); break;
1026 case ISD::FEXP2: ExpandFloatRes_FEXP2(N, Lo, Hi); break;
1027 case ISD::FFLOOR: ExpandFloatRes_FFLOOR(N, Lo, Hi); break;
1028 case ISD::FLOG: ExpandFloatRes_FLOG(N, Lo, Hi); break;
1029 case ISD::FLOG2: ExpandFloatRes_FLOG2(N, Lo, Hi); break;
1030 case ISD::FLOG10: ExpandFloatRes_FLOG10(N, Lo, Hi); break;
1031 case ISD::FMA: ExpandFloatRes_FMA(N, Lo, Hi); break;
1032 case ISD::FMUL: ExpandFloatRes_FMUL(N, Lo, Hi); break;
1033 case ISD::FNEARBYINT: ExpandFloatRes_FNEARBYINT(N, Lo, Hi); break;
1034 case ISD::FNEG: ExpandFloatRes_FNEG(N, Lo, Hi); break;
1035 case ISD::FP_EXTEND: ExpandFloatRes_FP_EXTEND(N, Lo, Hi); break;
1036 case ISD::FPOW: ExpandFloatRes_FPOW(N, Lo, Hi); break;
1037 case ISD::FPOWI: ExpandFloatRes_FPOWI(N, Lo, Hi); break;
1038 case ISD::FRINT: ExpandFloatRes_FRINT(N, Lo, Hi); break;
1039 case ISD::FROUND: ExpandFloatRes_FROUND(N, Lo, Hi); break;
1040 case ISD::FSIN: ExpandFloatRes_FSIN(N, Lo, Hi); break;
1041 case ISD::FSQRT: ExpandFloatRes_FSQRT(N, Lo, Hi); break;
1042 case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break;
1043 case ISD::FTRUNC: ExpandFloatRes_FTRUNC(N, Lo, Hi); break;
1044 case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break;
1045 case ISD::SINT_TO_FP:
1046 case ISD::UINT_TO_FP: ExpandFloatRes_XINT_TO_FP(N, Lo, Hi); break;
1047 case ISD::FREM: ExpandFloatRes_FREM(N, Lo, Hi); break;
1050 // If Lo/Hi is null, the sub-method took care of registering results etc.
1052 SetExpandedFloat(SDValue(N, ResNo), Lo, Hi);
1055 void DAGTypeLegalizer::ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo,
1057 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
1058 assert(NVT.getSizeInBits() == 64 &&
1059 "Do not know how to expand this float constant!");
1060 APInt C = cast<ConstantFPSDNode>(N)->getValueAPF().bitcastToAPInt();
1062 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
1063 APInt(64, C.getRawData()[1])),
1065 Hi = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
1066 APInt(64, C.getRawData()[0])),
1070 void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo,
1072 assert(N->getValueType(0) == MVT::ppcf128 &&
1073 "Logic only correct for ppcf128!");
1076 GetExpandedFloat(N->getOperand(0), Lo, Tmp);
1077 Hi = DAG.getNode(ISD::FABS, dl, Tmp.getValueType(), Tmp);
1078 // Lo = Hi==fabs(Hi) ? Lo : -Lo;
1079 Lo = DAG.getSelectCC(dl, Tmp, Hi, Lo,
1080 DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo),
1084 void DAGTypeLegalizer::ExpandFloatRes_FMINNUM(SDNode *N, SDValue &Lo,
1086 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1087 RTLIB::FMIN_F32, RTLIB::FMIN_F64,
1088 RTLIB::FMIN_F80, RTLIB::FMIN_F128,
1089 RTLIB::FMIN_PPCF128),
1091 GetPairElements(Call, Lo, Hi);
1094 void DAGTypeLegalizer::ExpandFloatRes_FMAXNUM(SDNode *N, SDValue &Lo,
1096 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1097 RTLIB::FMAX_F32, RTLIB::FMAX_F64,
1098 RTLIB::FMAX_F80, RTLIB::FMAX_F128,
1099 RTLIB::FMAX_PPCF128),
1101 GetPairElements(Call, Lo, Hi);
1104 void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo,
1106 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1107 RTLIB::ADD_F32, RTLIB::ADD_F64,
1108 RTLIB::ADD_F80, RTLIB::ADD_F128,
1109 RTLIB::ADD_PPCF128),
1111 GetPairElements(Call, Lo, Hi);
1114 void DAGTypeLegalizer::ExpandFloatRes_FCEIL(SDNode *N,
1115 SDValue &Lo, SDValue &Hi) {
1116 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1117 RTLIB::CEIL_F32, RTLIB::CEIL_F64,
1118 RTLIB::CEIL_F80, RTLIB::CEIL_F128,
1119 RTLIB::CEIL_PPCF128),
1121 GetPairElements(Call, Lo, Hi);
1124 void DAGTypeLegalizer::ExpandFloatRes_FCOPYSIGN(SDNode *N,
1125 SDValue &Lo, SDValue &Hi) {
1126 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1127 RTLIB::COPYSIGN_F32,
1128 RTLIB::COPYSIGN_F64,
1129 RTLIB::COPYSIGN_F80,
1130 RTLIB::COPYSIGN_F128,
1131 RTLIB::COPYSIGN_PPCF128),
1133 GetPairElements(Call, Lo, Hi);
1136 void DAGTypeLegalizer::ExpandFloatRes_FCOS(SDNode *N,
1137 SDValue &Lo, SDValue &Hi) {
1138 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1139 RTLIB::COS_F32, RTLIB::COS_F64,
1140 RTLIB::COS_F80, RTLIB::COS_F128,
1141 RTLIB::COS_PPCF128),
1143 GetPairElements(Call, Lo, Hi);
1146 void DAGTypeLegalizer::ExpandFloatRes_FDIV(SDNode *N, SDValue &Lo,
1148 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
1149 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
1154 RTLIB::DIV_PPCF128),
1155 N->getValueType(0), Ops, false,
1157 GetPairElements(Call, Lo, Hi);
1160 void DAGTypeLegalizer::ExpandFloatRes_FEXP(SDNode *N,
1161 SDValue &Lo, SDValue &Hi) {
1162 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1163 RTLIB::EXP_F32, RTLIB::EXP_F64,
1164 RTLIB::EXP_F80, RTLIB::EXP_F128,
1165 RTLIB::EXP_PPCF128),
1167 GetPairElements(Call, Lo, Hi);
1170 void DAGTypeLegalizer::ExpandFloatRes_FEXP2(SDNode *N,
1171 SDValue &Lo, SDValue &Hi) {
1172 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1173 RTLIB::EXP2_F32, RTLIB::EXP2_F64,
1174 RTLIB::EXP2_F80, RTLIB::EXP2_F128,
1175 RTLIB::EXP2_PPCF128),
1177 GetPairElements(Call, Lo, Hi);
1180 void DAGTypeLegalizer::ExpandFloatRes_FFLOOR(SDNode *N,
1181 SDValue &Lo, SDValue &Hi) {
1182 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1183 RTLIB::FLOOR_F32, RTLIB::FLOOR_F64,
1184 RTLIB::FLOOR_F80, RTLIB::FLOOR_F128,
1185 RTLIB::FLOOR_PPCF128),
1187 GetPairElements(Call, Lo, Hi);
1190 void DAGTypeLegalizer::ExpandFloatRes_FLOG(SDNode *N,
1191 SDValue &Lo, SDValue &Hi) {
1192 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1193 RTLIB::LOG_F32, RTLIB::LOG_F64,
1194 RTLIB::LOG_F80, RTLIB::LOG_F128,
1195 RTLIB::LOG_PPCF128),
1197 GetPairElements(Call, Lo, Hi);
1200 void DAGTypeLegalizer::ExpandFloatRes_FLOG2(SDNode *N,
1201 SDValue &Lo, SDValue &Hi) {
1202 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1203 RTLIB::LOG2_F32, RTLIB::LOG2_F64,
1204 RTLIB::LOG2_F80, RTLIB::LOG2_F128,
1205 RTLIB::LOG2_PPCF128),
1207 GetPairElements(Call, Lo, Hi);
1210 void DAGTypeLegalizer::ExpandFloatRes_FLOG10(SDNode *N,
1211 SDValue &Lo, SDValue &Hi) {
1212 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1213 RTLIB::LOG10_F32, RTLIB::LOG10_F64,
1214 RTLIB::LOG10_F80, RTLIB::LOG10_F128,
1215 RTLIB::LOG10_PPCF128),
1217 GetPairElements(Call, Lo, Hi);
1220 void DAGTypeLegalizer::ExpandFloatRes_FMA(SDNode *N, SDValue &Lo,
1222 SDValue Ops[3] = { N->getOperand(0), N->getOperand(1), N->getOperand(2) };
1223 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
1228 RTLIB::FMA_PPCF128),
1229 N->getValueType(0), Ops, false,
1231 GetPairElements(Call, Lo, Hi);
1234 void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDValue &Lo,
1236 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
1237 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
1242 RTLIB::MUL_PPCF128),
1243 N->getValueType(0), Ops, false,
1245 GetPairElements(Call, Lo, Hi);
1248 void DAGTypeLegalizer::ExpandFloatRes_FNEARBYINT(SDNode *N,
1249 SDValue &Lo, SDValue &Hi) {
1250 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1251 RTLIB::NEARBYINT_F32,
1252 RTLIB::NEARBYINT_F64,
1253 RTLIB::NEARBYINT_F80,
1254 RTLIB::NEARBYINT_F128,
1255 RTLIB::NEARBYINT_PPCF128),
1257 GetPairElements(Call, Lo, Hi);
1260 void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDValue &Lo,
1263 GetExpandedFloat(N->getOperand(0), Lo, Hi);
1264 Lo = DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo);
1265 Hi = DAG.getNode(ISD::FNEG, dl, Hi.getValueType(), Hi);
1268 void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo,
1270 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
1272 Hi = DAG.getNode(ISD::FP_EXTEND, dl, NVT, N->getOperand(0));
1273 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
1274 APInt(NVT.getSizeInBits(), 0)), dl, NVT);
1277 void DAGTypeLegalizer::ExpandFloatRes_FPOW(SDNode *N,
1278 SDValue &Lo, SDValue &Hi) {
1279 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1280 RTLIB::POW_F32, RTLIB::POW_F64,
1281 RTLIB::POW_F80, RTLIB::POW_F128,
1282 RTLIB::POW_PPCF128),
1284 GetPairElements(Call, Lo, Hi);
1287 void DAGTypeLegalizer::ExpandFloatRes_FPOWI(SDNode *N,
1288 SDValue &Lo, SDValue &Hi) {
1289 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1290 RTLIB::POWI_F32, RTLIB::POWI_F64,
1291 RTLIB::POWI_F80, RTLIB::POWI_F128,
1292 RTLIB::POWI_PPCF128),
1294 GetPairElements(Call, Lo, Hi);
1297 void DAGTypeLegalizer::ExpandFloatRes_FREM(SDNode *N,
1298 SDValue &Lo, SDValue &Hi) {
1299 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1300 RTLIB::REM_F32, RTLIB::REM_F64,
1301 RTLIB::REM_F80, RTLIB::REM_F128,
1302 RTLIB::REM_PPCF128),
1304 GetPairElements(Call, Lo, Hi);
1307 void DAGTypeLegalizer::ExpandFloatRes_FRINT(SDNode *N,
1308 SDValue &Lo, SDValue &Hi) {
1309 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1310 RTLIB::RINT_F32, RTLIB::RINT_F64,
1311 RTLIB::RINT_F80, RTLIB::RINT_F128,
1312 RTLIB::RINT_PPCF128),
1314 GetPairElements(Call, Lo, Hi);
1317 void DAGTypeLegalizer::ExpandFloatRes_FROUND(SDNode *N,
1318 SDValue &Lo, SDValue &Hi) {
1319 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1324 RTLIB::ROUND_PPCF128),
1326 GetPairElements(Call, Lo, Hi);
1329 void DAGTypeLegalizer::ExpandFloatRes_FSIN(SDNode *N,
1330 SDValue &Lo, SDValue &Hi) {
1331 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1332 RTLIB::SIN_F32, RTLIB::SIN_F64,
1333 RTLIB::SIN_F80, RTLIB::SIN_F128,
1334 RTLIB::SIN_PPCF128),
1336 GetPairElements(Call, Lo, Hi);
1339 void DAGTypeLegalizer::ExpandFloatRes_FSQRT(SDNode *N,
1340 SDValue &Lo, SDValue &Hi) {
1341 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1342 RTLIB::SQRT_F32, RTLIB::SQRT_F64,
1343 RTLIB::SQRT_F80, RTLIB::SQRT_F128,
1344 RTLIB::SQRT_PPCF128),
1346 GetPairElements(Call, Lo, Hi);
1349 void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo,
1351 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
1352 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
1357 RTLIB::SUB_PPCF128),
1358 N->getValueType(0), Ops, false,
1360 GetPairElements(Call, Lo, Hi);
1363 void DAGTypeLegalizer::ExpandFloatRes_FTRUNC(SDNode *N,
1364 SDValue &Lo, SDValue &Hi) {
1365 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1366 RTLIB::TRUNC_F32, RTLIB::TRUNC_F64,
1367 RTLIB::TRUNC_F80, RTLIB::TRUNC_F128,
1368 RTLIB::TRUNC_PPCF128),
1370 GetPairElements(Call, Lo, Hi);
1373 void DAGTypeLegalizer::ExpandFloatRes_LOAD(SDNode *N, SDValue &Lo,
1375 if (ISD::isNormalLoad(N)) {
1376 ExpandRes_NormalLoad(N, Lo, Hi);
1380 assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!");
1381 LoadSDNode *LD = cast<LoadSDNode>(N);
1382 SDValue Chain = LD->getChain();
1383 SDValue Ptr = LD->getBasePtr();
1386 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), LD->getValueType(0));
1387 assert(NVT.isByteSized() && "Expanded type not byte sized!");
1388 assert(LD->getMemoryVT().bitsLE(NVT) && "Float type not round?");
1390 Hi = DAG.getExtLoad(LD->getExtensionType(), dl, NVT, Chain, Ptr,
1391 LD->getMemoryVT(), LD->getMemOperand());
1393 // Remember the chain.
1394 Chain = Hi.getValue(1);
1396 // The low part is zero.
1397 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
1398 APInt(NVT.getSizeInBits(), 0)), dl, NVT);
1400 // Modified the chain - switch anything that used the old chain to use the
1402 ReplaceValueWith(SDValue(LD, 1), Chain);
1405 void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo,
1407 assert(N->getValueType(0) == MVT::ppcf128 && "Unsupported XINT_TO_FP!");
1408 EVT VT = N->getValueType(0);
1409 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
1410 SDValue Src = N->getOperand(0);
1411 EVT SrcVT = Src.getValueType();
1412 bool isSigned = N->getOpcode() == ISD::SINT_TO_FP;
1415 // First do an SINT_TO_FP, whether the original was signed or unsigned.
1416 // When promoting partial word types to i32 we must honor the signedness,
1418 if (SrcVT.bitsLE(MVT::i32)) {
1419 // The integer can be represented exactly in an f64.
1420 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
1422 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
1423 APInt(NVT.getSizeInBits(), 0)), dl, NVT);
1424 Hi = DAG.getNode(ISD::SINT_TO_FP, dl, NVT, Src);
1426 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
1427 if (SrcVT.bitsLE(MVT::i64)) {
1428 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
1430 LC = RTLIB::SINTTOFP_I64_PPCF128;
1431 } else if (SrcVT.bitsLE(MVT::i128)) {
1432 Src = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i128, Src);
1433 LC = RTLIB::SINTTOFP_I128_PPCF128;
1435 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
1437 Hi = TLI.makeLibCall(DAG, LC, VT, Src, true, dl).first;
1438 GetPairElements(Hi, Lo, Hi);
1444 // Unsigned - fix up the SINT_TO_FP value just calculated.
1445 Hi = DAG.getNode(ISD::BUILD_PAIR, dl, VT, Lo, Hi);
1446 SrcVT = Src.getValueType();
1448 // x>=0 ? (ppcf128)(iN)x : (ppcf128)(iN)x + 2^N; N=32,64,128.
1449 static const uint64_t TwoE32[] = { 0x41f0000000000000LL, 0 };
1450 static const uint64_t TwoE64[] = { 0x43f0000000000000LL, 0 };
1451 static const uint64_t TwoE128[] = { 0x47f0000000000000LL, 0 };
1452 ArrayRef<uint64_t> Parts;
1454 switch (SrcVT.getSimpleVT().SimpleTy) {
1456 llvm_unreachable("Unsupported UINT_TO_FP!");
1468 // TODO: Are there fast-math-flags to propagate to this FADD?
1469 Lo = DAG.getNode(ISD::FADD, dl, VT, Hi,
1470 DAG.getConstantFP(APFloat(APFloat::PPCDoubleDouble(),
1473 Lo = DAG.getSelectCC(dl, Src, DAG.getConstant(0, dl, SrcVT),
1474 Lo, Hi, ISD::SETLT);
1475 GetPairElements(Lo, Lo, Hi);
1479 //===----------------------------------------------------------------------===//
1480 // Float Operand Expansion
1481 //===----------------------------------------------------------------------===//
1483 /// ExpandFloatOperand - This method is called when the specified operand of the
1484 /// specified node is found to need expansion. At this point, all of the result
1485 /// types of the node are known to be legal, but other operands of the node may
1486 /// need promotion or expansion as well as the specified one.
1487 bool DAGTypeLegalizer::ExpandFloatOperand(SDNode *N, unsigned OpNo) {
1488 DEBUG(dbgs() << "Expand float operand: "; N->dump(&DAG); dbgs() << "\n");
1489 SDValue Res = SDValue();
1491 // See if the target wants to custom expand this node.
1492 if (CustomLowerNode(N, N->getOperand(OpNo).getValueType(), false))
1495 switch (N->getOpcode()) {
1498 dbgs() << "ExpandFloatOperand Op #" << OpNo << ": ";
1499 N->dump(&DAG); dbgs() << "\n";
1501 llvm_unreachable("Do not know how to expand this operator's operand!");
1503 case ISD::BITCAST: Res = ExpandOp_BITCAST(N); break;
1504 case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break;
1505 case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break;
1507 case ISD::BR_CC: Res = ExpandFloatOp_BR_CC(N); break;
1508 case ISD::FCOPYSIGN: Res = ExpandFloatOp_FCOPYSIGN(N); break;
1509 case ISD::FP_ROUND: Res = ExpandFloatOp_FP_ROUND(N); break;
1510 case ISD::FP_TO_SINT: Res = ExpandFloatOp_FP_TO_SINT(N); break;
1511 case ISD::FP_TO_UINT: Res = ExpandFloatOp_FP_TO_UINT(N); break;
1512 case ISD::SELECT_CC: Res = ExpandFloatOp_SELECT_CC(N); break;
1513 case ISD::SETCC: Res = ExpandFloatOp_SETCC(N); break;
1514 case ISD::STORE: Res = ExpandFloatOp_STORE(cast<StoreSDNode>(N),
1518 // If the result is null, the sub-method took care of registering results etc.
1519 if (!Res.getNode()) return false;
1521 // If the result is N, the sub-method updated N in place. Tell the legalizer
1523 if (Res.getNode() == N)
1526 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
1527 "Invalid operand expansion");
1529 ReplaceValueWith(SDValue(N, 0), Res);
1533 /// FloatExpandSetCCOperands - Expand the operands of a comparison. This code
1534 /// is shared among BR_CC, SELECT_CC, and SETCC handlers.
1535 void DAGTypeLegalizer::FloatExpandSetCCOperands(SDValue &NewLHS,
1537 ISD::CondCode &CCCode,
1539 SDValue LHSLo, LHSHi, RHSLo, RHSHi;
1540 GetExpandedFloat(NewLHS, LHSLo, LHSHi);
1541 GetExpandedFloat(NewRHS, RHSLo, RHSHi);
1543 assert(NewLHS.getValueType() == MVT::ppcf128 && "Unsupported setcc type!");
1545 // FIXME: This generated code sucks. We want to generate
1546 // FCMPU crN, hi1, hi2
1548 // FCMPU crN, lo1, lo2
1549 // The following can be improved, but not that much.
1550 SDValue Tmp1, Tmp2, Tmp3;
1551 Tmp1 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()),
1552 LHSHi, RHSHi, ISD::SETOEQ);
1553 Tmp2 = DAG.getSetCC(dl, getSetCCResultType(LHSLo.getValueType()),
1554 LHSLo, RHSLo, CCCode);
1555 Tmp3 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2);
1556 Tmp1 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()),
1557 LHSHi, RHSHi, ISD::SETUNE);
1558 Tmp2 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()),
1559 LHSHi, RHSHi, CCCode);
1560 Tmp1 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2);
1561 NewLHS = DAG.getNode(ISD::OR, dl, Tmp1.getValueType(), Tmp1, Tmp3);
1562 NewRHS = SDValue(); // LHS is the result, not a compare.
1565 SDValue DAGTypeLegalizer::ExpandFloatOp_BR_CC(SDNode *N) {
1566 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
1567 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
1568 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N));
1570 // If ExpandSetCCOperands returned a scalar, we need to compare the result
1571 // against zero to select between true and false values.
1572 if (!NewRHS.getNode()) {
1573 NewRHS = DAG.getConstant(0, SDLoc(N), NewLHS.getValueType());
1574 CCCode = ISD::SETNE;
1577 // Update N to have the operands specified.
1578 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0),
1579 DAG.getCondCode(CCCode), NewLHS, NewRHS,
1580 N->getOperand(4)), 0);
1583 SDValue DAGTypeLegalizer::ExpandFloatOp_FCOPYSIGN(SDNode *N) {
1584 assert(N->getOperand(1).getValueType() == MVT::ppcf128 &&
1585 "Logic only correct for ppcf128!");
1587 GetExpandedFloat(N->getOperand(1), Lo, Hi);
1588 // The ppcf128 value is providing only the sign; take it from the
1589 // higher-order double (which must have the larger magnitude).
1590 return DAG.getNode(ISD::FCOPYSIGN, SDLoc(N),
1591 N->getValueType(0), N->getOperand(0), Hi);
1594 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_ROUND(SDNode *N) {
1595 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1596 "Logic only correct for ppcf128!");
1598 GetExpandedFloat(N->getOperand(0), Lo, Hi);
1599 // Round it the rest of the way (e.g. to f32) if needed.
1600 return DAG.getNode(ISD::FP_ROUND, SDLoc(N),
1601 N->getValueType(0), Hi, N->getOperand(1));
1604 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) {
1605 EVT RVT = N->getValueType(0);
1608 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
1609 // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
1610 if (RVT == MVT::i32) {
1611 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1612 "Logic only correct for ppcf128!");
1613 SDValue Res = DAG.getNode(ISD::FP_ROUND_INREG, dl, MVT::ppcf128,
1614 N->getOperand(0), DAG.getValueType(MVT::f64));
1615 Res = DAG.getNode(ISD::FP_ROUND, dl, MVT::f64, Res,
1616 DAG.getIntPtrConstant(1, dl));
1617 return DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, Res);
1620 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
1621 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
1622 return TLI.makeLibCall(DAG, LC, RVT, N->getOperand(0), false, dl).first;
1625 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) {
1626 EVT RVT = N->getValueType(0);
1629 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
1630 // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
1631 if (RVT == MVT::i32) {
1632 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1633 "Logic only correct for ppcf128!");
1634 const uint64_t TwoE31[] = {0x41e0000000000000LL, 0};
1635 APFloat APF = APFloat(APFloat::PPCDoubleDouble(), APInt(128, TwoE31));
1636 SDValue Tmp = DAG.getConstantFP(APF, dl, MVT::ppcf128);
1637 // X>=2^31 ? (int)(X-2^31)+0x80000000 : (int)X
1638 // FIXME: generated code sucks.
1639 // TODO: Are there fast-math-flags to propagate to this FSUB?
1640 return DAG.getSelectCC(dl, N->getOperand(0), Tmp,
1641 DAG.getNode(ISD::ADD, dl, MVT::i32,
1642 DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32,
1643 DAG.getNode(ISD::FSUB, dl,
1647 DAG.getConstant(0x80000000, dl,
1649 DAG.getNode(ISD::FP_TO_SINT, dl,
1650 MVT::i32, N->getOperand(0)),
1654 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
1655 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
1656 return TLI.makeLibCall(DAG, LC, N->getValueType(0), N->getOperand(0),
1660 SDValue DAGTypeLegalizer::ExpandFloatOp_SELECT_CC(SDNode *N) {
1661 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
1662 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
1663 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N));
1665 // If ExpandSetCCOperands returned a scalar, we need to compare the result
1666 // against zero to select between true and false values.
1667 if (!NewRHS.getNode()) {
1668 NewRHS = DAG.getConstant(0, SDLoc(N), NewLHS.getValueType());
1669 CCCode = ISD::SETNE;
1672 // Update N to have the operands specified.
1673 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS,
1674 N->getOperand(2), N->getOperand(3),
1675 DAG.getCondCode(CCCode)), 0);
1678 SDValue DAGTypeLegalizer::ExpandFloatOp_SETCC(SDNode *N) {
1679 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
1680 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
1681 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N));
1683 // If ExpandSetCCOperands returned a scalar, use it.
1684 if (!NewRHS.getNode()) {
1685 assert(NewLHS.getValueType() == N->getValueType(0) &&
1686 "Unexpected setcc expansion!");
1690 // Otherwise, update N to have the operands specified.
1691 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS,
1692 DAG.getCondCode(CCCode)), 0);
1695 SDValue DAGTypeLegalizer::ExpandFloatOp_STORE(SDNode *N, unsigned OpNo) {
1696 if (ISD::isNormalStore(N))
1697 return ExpandOp_NormalStore(N, OpNo);
1699 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
1700 assert(OpNo == 1 && "Can only expand the stored value so far");
1701 StoreSDNode *ST = cast<StoreSDNode>(N);
1703 SDValue Chain = ST->getChain();
1704 SDValue Ptr = ST->getBasePtr();
1706 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(),
1707 ST->getValue().getValueType());
1708 assert(NVT.isByteSized() && "Expanded type not byte sized!");
1709 assert(ST->getMemoryVT().bitsLE(NVT) && "Float type not round?");
1713 GetExpandedOp(ST->getValue(), Lo, Hi);
1715 return DAG.getTruncStore(Chain, SDLoc(N), Hi, Ptr,
1716 ST->getMemoryVT(), ST->getMemOperand());
1719 //===----------------------------------------------------------------------===//
1720 // Float Operand Promotion
1721 //===----------------------------------------------------------------------===//
1724 static ISD::NodeType GetPromotionOpcode(EVT OpVT, EVT RetVT) {
1725 if (OpVT == MVT::f16) {
1726 return ISD::FP16_TO_FP;
1727 } else if (RetVT == MVT::f16) {
1728 return ISD::FP_TO_FP16;
1731 report_fatal_error("Attempt at an invalid promotion-related conversion");
1734 bool DAGTypeLegalizer::PromoteFloatOperand(SDNode *N, unsigned OpNo) {
1735 SDValue R = SDValue();
1737 // Nodes that use a promotion-requiring floating point operand, but doesn't
1738 // produce a promotion-requiring floating point result, need to be legalized
1739 // to use the promoted float operand. Nodes that produce at least one
1740 // promotion-requiring floating point result have their operands legalized as
1741 // a part of PromoteFloatResult.
1742 switch (N->getOpcode()) {
1744 llvm_unreachable("Do not know how to promote this operator's operand!");
1746 case ISD::BITCAST: R = PromoteFloatOp_BITCAST(N, OpNo); break;
1747 case ISD::FCOPYSIGN: R = PromoteFloatOp_FCOPYSIGN(N, OpNo); break;
1748 case ISD::FP_TO_SINT:
1749 case ISD::FP_TO_UINT: R = PromoteFloatOp_FP_TO_XINT(N, OpNo); break;
1750 case ISD::FP_EXTEND: R = PromoteFloatOp_FP_EXTEND(N, OpNo); break;
1751 case ISD::SELECT_CC: R = PromoteFloatOp_SELECT_CC(N, OpNo); break;
1752 case ISD::SETCC: R = PromoteFloatOp_SETCC(N, OpNo); break;
1753 case ISD::STORE: R = PromoteFloatOp_STORE(N, OpNo); break;
1757 ReplaceValueWith(SDValue(N, 0), R);
1761 SDValue DAGTypeLegalizer::PromoteFloatOp_BITCAST(SDNode *N, unsigned OpNo) {
1762 SDValue Op = N->getOperand(0);
1763 EVT OpVT = Op->getValueType(0);
1765 EVT IVT = EVT::getIntegerVT(*DAG.getContext(), OpVT.getSizeInBits());
1766 assert (IVT == N->getValueType(0) && "Bitcast to type of different size");
1768 SDValue Promoted = GetPromotedFloat(N->getOperand(0));
1769 EVT PromotedVT = Promoted->getValueType(0);
1771 // Convert the promoted float value to the desired IVT.
1772 return DAG.getNode(GetPromotionOpcode(PromotedVT, OpVT), SDLoc(N), IVT,
1776 // Promote Operand 1 of FCOPYSIGN. Operand 0 ought to be handled by
1777 // PromoteFloatRes_FCOPYSIGN.
1778 SDValue DAGTypeLegalizer::PromoteFloatOp_FCOPYSIGN(SDNode *N, unsigned OpNo) {
1779 assert (OpNo == 1 && "Only Operand 1 must need promotion here");
1780 SDValue Op1 = GetPromotedFloat(N->getOperand(1));
1782 return DAG.getNode(N->getOpcode(), SDLoc(N), N->getValueType(0),
1783 N->getOperand(0), Op1);
1786 // Convert the promoted float value to the desired integer type
1787 SDValue DAGTypeLegalizer::PromoteFloatOp_FP_TO_XINT(SDNode *N, unsigned OpNo) {
1788 SDValue Op = GetPromotedFloat(N->getOperand(0));
1789 return DAG.getNode(N->getOpcode(), SDLoc(N), N->getValueType(0), Op);
1792 SDValue DAGTypeLegalizer::PromoteFloatOp_FP_EXTEND(SDNode *N, unsigned OpNo) {
1793 SDValue Op = GetPromotedFloat(N->getOperand(0));
1794 EVT VT = N->getValueType(0);
1796 // Desired VT is same as promoted type. Use promoted float directly.
1797 if (VT == Op->getValueType(0))
1800 // Else, extend the promoted float value to the desired VT.
1801 return DAG.getNode(ISD::FP_EXTEND, SDLoc(N), VT, Op);
1804 // Promote the float operands used for comparison. The true- and false-
1805 // operands have the same type as the result and are promoted, if needed, by
1806 // PromoteFloatRes_SELECT_CC
1807 SDValue DAGTypeLegalizer::PromoteFloatOp_SELECT_CC(SDNode *N, unsigned OpNo) {
1808 SDValue LHS = GetPromotedFloat(N->getOperand(0));
1809 SDValue RHS = GetPromotedFloat(N->getOperand(1));
1811 return DAG.getNode(ISD::SELECT_CC, SDLoc(N), N->getValueType(0),
1812 LHS, RHS, N->getOperand(2), N->getOperand(3),
1816 // Construct a SETCC that compares the promoted values and sets the conditional
1818 SDValue DAGTypeLegalizer::PromoteFloatOp_SETCC(SDNode *N, unsigned OpNo) {
1819 EVT VT = N->getValueType(0);
1820 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
1821 SDValue Op0 = GetPromotedFloat(N->getOperand(0));
1822 SDValue Op1 = GetPromotedFloat(N->getOperand(1));
1823 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
1825 return DAG.getSetCC(SDLoc(N), NVT, Op0, Op1, CCCode);
1829 // Lower the promoted Float down to the integer value of same size and construct
1830 // a STORE of the integer value.
1831 SDValue DAGTypeLegalizer::PromoteFloatOp_STORE(SDNode *N, unsigned OpNo) {
1832 StoreSDNode *ST = cast<StoreSDNode>(N);
1833 SDValue Val = ST->getValue();
1836 SDValue Promoted = GetPromotedFloat(Val);
1837 EVT VT = ST->getOperand(1)->getValueType(0);
1838 EVT IVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits());
1841 NewVal = DAG.getNode(GetPromotionOpcode(Promoted.getValueType(), VT), DL,
1844 return DAG.getStore(ST->getChain(), DL, NewVal, ST->getBasePtr(),
1845 ST->getMemOperand());
1848 //===----------------------------------------------------------------------===//
1849 // Float Result Promotion
1850 //===----------------------------------------------------------------------===//
1852 void DAGTypeLegalizer::PromoteFloatResult(SDNode *N, unsigned ResNo) {
1853 SDValue R = SDValue();
1855 switch (N->getOpcode()) {
1856 // These opcodes cannot appear if promotion of FP16 is done in the backend
1858 case ISD::FP16_TO_FP:
1859 case ISD::FP_TO_FP16:
1861 llvm_unreachable("Do not know how to promote this operator's result!");
1863 case ISD::BITCAST: R = PromoteFloatRes_BITCAST(N); break;
1864 case ISD::ConstantFP: R = PromoteFloatRes_ConstantFP(N); break;
1865 case ISD::EXTRACT_VECTOR_ELT:
1866 R = PromoteFloatRes_EXTRACT_VECTOR_ELT(N); break;
1867 case ISD::FCOPYSIGN: R = PromoteFloatRes_FCOPYSIGN(N); break;
1869 // Unary FP Operations
1879 case ISD::FNEARBYINT:
1885 case ISD::FTRUNC: R = PromoteFloatRes_UnaryOp(N); break;
1887 // Binary FP Operations
1897 case ISD::FSUB: R = PromoteFloatRes_BinOp(N); break;
1899 case ISD::FMA: // FMA is same as FMAD
1900 case ISD::FMAD: R = PromoteFloatRes_FMAD(N); break;
1902 case ISD::FPOWI: R = PromoteFloatRes_FPOWI(N); break;
1904 case ISD::FP_ROUND: R = PromoteFloatRes_FP_ROUND(N); break;
1905 case ISD::LOAD: R = PromoteFloatRes_LOAD(N); break;
1906 case ISD::SELECT: R = PromoteFloatRes_SELECT(N); break;
1907 case ISD::SELECT_CC: R = PromoteFloatRes_SELECT_CC(N); break;
1909 case ISD::SINT_TO_FP:
1910 case ISD::UINT_TO_FP: R = PromoteFloatRes_XINT_TO_FP(N); break;
1911 case ISD::UNDEF: R = PromoteFloatRes_UNDEF(N); break;
1916 SetPromotedFloat(SDValue(N, ResNo), R);
1919 // Bitcast from i16 to f16: convert the i16 to a f32 value instead.
1920 // At this point, it is not possible to determine if the bitcast value is
1921 // eventually stored to memory or promoted to f32 or promoted to a floating
1922 // point at a higher precision. Some of these cases are handled by FP_EXTEND,
1923 // STORE promotion handlers.
1924 SDValue DAGTypeLegalizer::PromoteFloatRes_BITCAST(SDNode *N) {
1925 EVT VT = N->getValueType(0);
1926 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
1927 return DAG.getNode(GetPromotionOpcode(VT, NVT), SDLoc(N), NVT,
1931 SDValue DAGTypeLegalizer::PromoteFloatRes_ConstantFP(SDNode *N) {
1932 ConstantFPSDNode *CFPNode = cast<ConstantFPSDNode>(N);
1933 EVT VT = N->getValueType(0);
1936 // Get the (bit-cast) APInt of the APFloat and build an integer constant
1937 EVT IVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits());
1938 SDValue C = DAG.getConstant(CFPNode->getValueAPF().bitcastToAPInt(), DL,
1941 // Convert the Constant to the desired FP type
1942 // FIXME We might be able to do the conversion during compilation and get rid
1943 // of it from the object code
1944 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
1945 return DAG.getNode(GetPromotionOpcode(VT, NVT), DL, NVT, C);
1948 // If the Index operand is a constant, try to redirect the extract operation to
1949 // the correct legalized vector. If not, bit-convert the input vector to
1950 // equivalent integer vector. Extract the element as an (bit-cast) integer
1951 // value and convert it to the promoted type.
1952 SDValue DAGTypeLegalizer::PromoteFloatRes_EXTRACT_VECTOR_ELT(SDNode *N) {
1955 // If the index is constant, try to extract the value from the legalized
1957 if (isa<ConstantSDNode>(N->getOperand(1))) {
1958 SDValue Vec = N->getOperand(0);
1959 SDValue Idx = N->getOperand(1);
1960 EVT VecVT = Vec->getValueType(0);
1961 EVT EltVT = VecVT.getVectorElementType();
1963 uint64_t IdxVal = cast<ConstantSDNode>(Idx)->getZExtValue();
1965 switch (getTypeAction(VecVT)) {
1967 case TargetLowering::TypeScalarizeVector: {
1968 SDValue Res = GetScalarizedVector(N->getOperand(0));
1969 ReplaceValueWith(SDValue(N, 0), Res);
1972 case TargetLowering::TypeWidenVector: {
1973 Vec = GetWidenedVector(Vec);
1974 SDValue Res = DAG.getNode(N->getOpcode(), DL, EltVT, Vec, Idx);
1975 ReplaceValueWith(SDValue(N, 0), Res);
1978 case TargetLowering::TypeSplitVector: {
1980 GetSplitVector(Vec, Lo, Hi);
1982 uint64_t LoElts = Lo.getValueType().getVectorNumElements();
1984 if (IdxVal < LoElts)
1985 Res = DAG.getNode(N->getOpcode(), DL, EltVT, Lo, Idx);
1987 Res = DAG.getNode(N->getOpcode(), DL, EltVT, Hi,
1988 DAG.getConstant(IdxVal - LoElts, DL,
1989 Idx.getValueType()));
1990 ReplaceValueWith(SDValue(N, 0), Res);
1997 // Bit-convert the input vector to the equivalent integer vector
1998 SDValue NewOp = BitConvertVectorToIntegerVector(N->getOperand(0));
1999 EVT IVT = NewOp.getValueType().getVectorElementType();
2001 // Extract the element as an (bit-cast) integer value
2002 SDValue NewVal = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, IVT,
2003 NewOp, N->getOperand(1));
2005 // Convert the element to the desired FP type
2006 EVT VT = N->getValueType(0);
2007 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
2008 return DAG.getNode(GetPromotionOpcode(VT, NVT), SDLoc(N), NVT, NewVal);
2011 // FCOPYSIGN(X, Y) returns the value of X with the sign of Y. If the result
2012 // needs promotion, so does the argument X. Note that Y, if needed, will be
2013 // handled during operand promotion.
2014 SDValue DAGTypeLegalizer::PromoteFloatRes_FCOPYSIGN(SDNode *N) {
2015 EVT VT = N->getValueType(0);
2016 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
2017 SDValue Op0 = GetPromotedFloat(N->getOperand(0));
2019 SDValue Op1 = N->getOperand(1);
2021 return DAG.getNode(N->getOpcode(), SDLoc(N), NVT, Op0, Op1);
2024 // Unary operation where the result and the operand have PromoteFloat type
2025 // action. Construct a new SDNode with the promoted float value of the old
2027 SDValue DAGTypeLegalizer::PromoteFloatRes_UnaryOp(SDNode *N) {
2028 EVT VT = N->getValueType(0);
2029 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
2030 SDValue Op = GetPromotedFloat(N->getOperand(0));
2032 return DAG.getNode(N->getOpcode(), SDLoc(N), NVT, Op);
2035 // Binary operations where the result and both operands have PromoteFloat type
2036 // action. Construct a new SDNode with the promoted float values of the old
2038 SDValue DAGTypeLegalizer::PromoteFloatRes_BinOp(SDNode *N) {
2039 EVT VT = N->getValueType(0);
2040 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
2041 SDValue Op0 = GetPromotedFloat(N->getOperand(0));
2042 SDValue Op1 = GetPromotedFloat(N->getOperand(1));
2043 return DAG.getNode(N->getOpcode(), SDLoc(N), NVT, Op0, Op1, N->getFlags());
2046 SDValue DAGTypeLegalizer::PromoteFloatRes_FMAD(SDNode *N) {
2047 EVT VT = N->getValueType(0);
2048 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
2049 SDValue Op0 = GetPromotedFloat(N->getOperand(0));
2050 SDValue Op1 = GetPromotedFloat(N->getOperand(1));
2051 SDValue Op2 = GetPromotedFloat(N->getOperand(2));
2053 return DAG.getNode(N->getOpcode(), SDLoc(N), NVT, Op0, Op1, Op2);
2056 // Promote the Float (first) operand and retain the Integer (second) operand
2057 SDValue DAGTypeLegalizer::PromoteFloatRes_FPOWI(SDNode *N) {
2058 EVT VT = N->getValueType(0);
2059 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
2060 SDValue Op0 = GetPromotedFloat(N->getOperand(0));
2061 SDValue Op1 = N->getOperand(1);
2063 return DAG.getNode(N->getOpcode(), SDLoc(N), NVT, Op0, Op1);
2066 // Explicit operation to reduce precision. Reduce the value to half precision
2067 // and promote it back to the legal type.
2068 SDValue DAGTypeLegalizer::PromoteFloatRes_FP_ROUND(SDNode *N) {
2071 SDValue Op = N->getOperand(0);
2072 EVT VT = N->getValueType(0);
2073 EVT OpVT = Op->getValueType(0);
2074 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
2075 EVT IVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits());
2077 // Round promoted float to desired precision
2078 SDValue Round = DAG.getNode(GetPromotionOpcode(OpVT, VT), DL, IVT, Op);
2079 // Promote it back to the legal output type
2080 return DAG.getNode(GetPromotionOpcode(VT, NVT), DL, NVT, Round);
2083 SDValue DAGTypeLegalizer::PromoteFloatRes_LOAD(SDNode *N) {
2084 LoadSDNode *L = cast<LoadSDNode>(N);
2085 EVT VT = N->getValueType(0);
2087 // Load the value as an integer value with the same number of bits.
2088 EVT IVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits());
2090 L->getMemOperand()->getFlags() &
2091 ~(MachineMemOperand::MOInvariant | MachineMemOperand::MODereferenceable);
2092 SDValue newL = DAG.getLoad(L->getAddressingMode(), L->getExtensionType(), IVT,
2093 SDLoc(N), L->getChain(), L->getBasePtr(),
2094 L->getOffset(), L->getPointerInfo(), IVT,
2095 L->getAlignment(), MMOFlags, L->getAAInfo());
2096 // Legalize the chain result by replacing uses of the old value chain with the
2098 ReplaceValueWith(SDValue(N, 1), newL.getValue(1));
2100 // Convert the integer value to the desired FP type
2101 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
2102 return DAG.getNode(GetPromotionOpcode(VT, NVT), SDLoc(N), NVT, newL);
2105 // Construct a new SELECT node with the promoted true- and false- values.
2106 SDValue DAGTypeLegalizer::PromoteFloatRes_SELECT(SDNode *N) {
2107 SDValue TrueVal = GetPromotedFloat(N->getOperand(1));
2108 SDValue FalseVal = GetPromotedFloat(N->getOperand(2));
2110 return DAG.getNode(ISD::SELECT, SDLoc(N), TrueVal->getValueType(0),
2111 N->getOperand(0), TrueVal, FalseVal);
2114 // Construct a new SELECT_CC node with the promoted true- and false- values.
2115 // The operands used for comparison are promoted by PromoteFloatOp_SELECT_CC.
2116 SDValue DAGTypeLegalizer::PromoteFloatRes_SELECT_CC(SDNode *N) {
2117 SDValue TrueVal = GetPromotedFloat(N->getOperand(2));
2118 SDValue FalseVal = GetPromotedFloat(N->getOperand(3));
2120 return DAG.getNode(ISD::SELECT_CC, SDLoc(N), N->getValueType(0),
2121 N->getOperand(0), N->getOperand(1), TrueVal, FalseVal,
2125 // Construct a SDNode that transforms the SINT or UINT operand to the promoted
2127 SDValue DAGTypeLegalizer::PromoteFloatRes_XINT_TO_FP(SDNode *N) {
2129 EVT VT = N->getValueType(0);
2130 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
2131 SDValue NV = DAG.getNode(N->getOpcode(), DL, NVT, N->getOperand(0));
2132 // Round the value to the desired precision (that of the source type).
2134 ISD::FP_EXTEND, DL, NVT,
2135 DAG.getNode(ISD::FP_ROUND, DL, VT, NV, DAG.getIntPtrConstant(0, DL)));
2138 SDValue DAGTypeLegalizer::PromoteFloatRes_UNDEF(SDNode *N) {
2139 return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(),
2140 N->getValueType(0)));