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 // Result Float to Integer Conversion.
47 //===----------------------------------------------------------------------===//
49 void 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!");
62 case ISD::MERGE_VALUES:R = SoftenFloatRes_MERGE_VALUES(N, ResNo); break;
63 case ISD::BITCAST: R = SoftenFloatRes_BITCAST(N); break;
64 case ISD::BUILD_PAIR: R = SoftenFloatRes_BUILD_PAIR(N); break;
66 R = SoftenFloatRes_ConstantFP(cast<ConstantFPSDNode>(N));
68 case ISD::EXTRACT_VECTOR_ELT:
69 R = SoftenFloatRes_EXTRACT_VECTOR_ELT(N); break;
70 case ISD::FABS: R = SoftenFloatRes_FABS(N); break;
71 case ISD::FADD: R = SoftenFloatRes_FADD(N); break;
72 case ISD::FCEIL: R = SoftenFloatRes_FCEIL(N); break;
73 case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break;
74 case ISD::FCOS: R = SoftenFloatRes_FCOS(N); break;
75 case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break;
76 case ISD::FEXP: R = SoftenFloatRes_FEXP(N); break;
77 case ISD::FEXP2: R = SoftenFloatRes_FEXP2(N); break;
78 case ISD::FFLOOR: R = SoftenFloatRes_FFLOOR(N); break;
79 case ISD::FLOG: R = SoftenFloatRes_FLOG(N); break;
80 case ISD::FLOG2: R = SoftenFloatRes_FLOG2(N); break;
81 case ISD::FLOG10: R = SoftenFloatRes_FLOG10(N); break;
82 case ISD::FMA: R = SoftenFloatRes_FMA(N); break;
83 case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break;
84 case ISD::FNEARBYINT: R = SoftenFloatRes_FNEARBYINT(N); break;
85 case ISD::FNEG: R = SoftenFloatRes_FNEG(N); break;
86 case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break;
87 case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break;
88 case ISD::FP16_TO_FP: R = SoftenFloatRes_FP16_TO_FP(N); break;
89 case ISD::FPOW: R = SoftenFloatRes_FPOW(N); break;
90 case ISD::FPOWI: R = SoftenFloatRes_FPOWI(N); break;
91 case ISD::FREM: R = SoftenFloatRes_FREM(N); break;
92 case ISD::FRINT: R = SoftenFloatRes_FRINT(N); break;
93 case ISD::FROUND: R = SoftenFloatRes_FROUND(N); break;
94 case ISD::FSIN: R = SoftenFloatRes_FSIN(N); break;
95 case ISD::FSQRT: R = SoftenFloatRes_FSQRT(N); break;
96 case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break;
97 case ISD::FTRUNC: R = SoftenFloatRes_FTRUNC(N); break;
98 case ISD::LOAD: R = SoftenFloatRes_LOAD(N); break;
99 case ISD::SELECT: R = SoftenFloatRes_SELECT(N); break;
100 case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N); break;
101 case ISD::SINT_TO_FP:
102 case ISD::UINT_TO_FP: R = SoftenFloatRes_XINT_TO_FP(N); break;
103 case ISD::UNDEF: R = SoftenFloatRes_UNDEF(N); break;
104 case ISD::VAARG: R = SoftenFloatRes_VAARG(N); break;
107 // If R is null, the sub-method took care of registering the result.
109 SetSoftenedFloat(SDValue(N, ResNo), R);
112 SDValue DAGTypeLegalizer::SoftenFloatRes_BITCAST(SDNode *N) {
113 return BitConvertToInteger(N->getOperand(0));
116 SDValue DAGTypeLegalizer::SoftenFloatRes_MERGE_VALUES(SDNode *N,
118 SDValue Op = DisintegrateMERGE_VALUES(N, ResNo);
119 return BitConvertToInteger(Op);
122 SDValue DAGTypeLegalizer::SoftenFloatRes_BUILD_PAIR(SDNode *N) {
123 // Convert the inputs to integers, and build a new pair out of them.
124 return DAG.getNode(ISD::BUILD_PAIR, SDLoc(N),
125 TLI.getTypeToTransformTo(*DAG.getContext(),
127 BitConvertToInteger(N->getOperand(0)),
128 BitConvertToInteger(N->getOperand(1)));
131 SDValue DAGTypeLegalizer::SoftenFloatRes_ConstantFP(ConstantFPSDNode *N) {
132 return DAG.getConstant(N->getValueAPF().bitcastToAPInt(),
133 TLI.getTypeToTransformTo(*DAG.getContext(),
134 N->getValueType(0)));
137 SDValue DAGTypeLegalizer::SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N) {
138 SDValue NewOp = BitConvertVectorToIntegerVector(N->getOperand(0));
139 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SDLoc(N),
140 NewOp.getValueType().getVectorElementType(),
141 NewOp, N->getOperand(1));
144 SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) {
145 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
146 unsigned Size = NVT.getSizeInBits();
148 // Mask = ~(1 << (Size-1))
149 APInt API = APInt::getAllOnesValue(Size);
150 API.clearBit(Size-1);
151 SDValue Mask = DAG.getConstant(API, NVT);
152 SDValue Op = GetSoftenedFloat(N->getOperand(0));
153 return DAG.getNode(ISD::AND, SDLoc(N), NVT, Op, Mask);
156 SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) {
157 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
158 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
159 GetSoftenedFloat(N->getOperand(1)) };
160 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
166 NVT, Ops, 2, false, SDLoc(N)).first;
169 SDValue DAGTypeLegalizer::SoftenFloatRes_FCEIL(SDNode *N) {
170 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
171 SDValue Op = GetSoftenedFloat(N->getOperand(0));
172 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
177 RTLIB::CEIL_PPCF128),
178 NVT, &Op, 1, false, SDLoc(N)).first;
181 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) {
182 SDValue LHS = GetSoftenedFloat(N->getOperand(0));
183 SDValue RHS = BitConvertToInteger(N->getOperand(1));
186 EVT LVT = LHS.getValueType();
187 EVT RVT = RHS.getValueType();
189 unsigned LSize = LVT.getSizeInBits();
190 unsigned RSize = RVT.getSizeInBits();
192 // First get the sign bit of second operand.
193 SDValue SignBit = DAG.getNode(ISD::SHL, dl, RVT, DAG.getConstant(1, RVT),
194 DAG.getConstant(RSize - 1,
195 TLI.getShiftAmountTy(RVT)));
196 SignBit = DAG.getNode(ISD::AND, dl, RVT, RHS, SignBit);
198 // Shift right or sign-extend it if the two operands have different types.
199 int SizeDiff = RVT.getSizeInBits() - LVT.getSizeInBits();
201 SignBit = DAG.getNode(ISD::SRL, dl, RVT, SignBit,
202 DAG.getConstant(SizeDiff,
203 TLI.getShiftAmountTy(SignBit.getValueType())));
204 SignBit = DAG.getNode(ISD::TRUNCATE, dl, LVT, SignBit);
205 } else if (SizeDiff < 0) {
206 SignBit = DAG.getNode(ISD::ANY_EXTEND, dl, LVT, SignBit);
207 SignBit = DAG.getNode(ISD::SHL, dl, LVT, SignBit,
208 DAG.getConstant(-SizeDiff,
209 TLI.getShiftAmountTy(SignBit.getValueType())));
212 // Clear the sign bit of the first operand.
213 SDValue Mask = DAG.getNode(ISD::SHL, dl, LVT, DAG.getConstant(1, LVT),
214 DAG.getConstant(LSize - 1,
215 TLI.getShiftAmountTy(LVT)));
216 Mask = DAG.getNode(ISD::SUB, dl, LVT, Mask, DAG.getConstant(1, LVT));
217 LHS = DAG.getNode(ISD::AND, dl, LVT, LHS, Mask);
219 // Or the value with the sign bit.
220 return DAG.getNode(ISD::OR, dl, LVT, LHS, SignBit);
223 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) {
224 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
225 SDValue Op = GetSoftenedFloat(N->getOperand(0));
226 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
232 NVT, &Op, 1, false, SDLoc(N)).first;
235 SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
236 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
237 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
238 GetSoftenedFloat(N->getOperand(1)) };
239 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
245 NVT, Ops, 2, false, SDLoc(N)).first;
248 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) {
249 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
250 SDValue Op = GetSoftenedFloat(N->getOperand(0));
251 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
257 NVT, &Op, 1, false, SDLoc(N)).first;
260 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) {
261 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
262 SDValue Op = GetSoftenedFloat(N->getOperand(0));
263 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
268 RTLIB::EXP2_PPCF128),
269 NVT, &Op, 1, false, SDLoc(N)).first;
272 SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) {
273 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
274 SDValue Op = GetSoftenedFloat(N->getOperand(0));
275 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
280 RTLIB::FLOOR_PPCF128),
281 NVT, &Op, 1, false, SDLoc(N)).first;
284 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) {
285 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
286 SDValue Op = GetSoftenedFloat(N->getOperand(0));
287 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
293 NVT, &Op, 1, false, SDLoc(N)).first;
296 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) {
297 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
298 SDValue Op = GetSoftenedFloat(N->getOperand(0));
299 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
304 RTLIB::LOG2_PPCF128),
305 NVT, &Op, 1, false, SDLoc(N)).first;
308 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) {
309 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
310 SDValue Op = GetSoftenedFloat(N->getOperand(0));
311 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
316 RTLIB::LOG10_PPCF128),
317 NVT, &Op, 1, false, SDLoc(N)).first;
320 SDValue DAGTypeLegalizer::SoftenFloatRes_FMA(SDNode *N) {
321 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
322 SDValue Ops[3] = { GetSoftenedFloat(N->getOperand(0)),
323 GetSoftenedFloat(N->getOperand(1)),
324 GetSoftenedFloat(N->getOperand(2)) };
325 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
331 NVT, Ops, 3, false, SDLoc(N)).first;
334 SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
335 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
336 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
337 GetSoftenedFloat(N->getOperand(1)) };
338 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
344 NVT, Ops, 2, false, SDLoc(N)).first;
347 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) {
348 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
349 SDValue Op = GetSoftenedFloat(N->getOperand(0));
350 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
351 RTLIB::NEARBYINT_F32,
352 RTLIB::NEARBYINT_F64,
353 RTLIB::NEARBYINT_F80,
354 RTLIB::NEARBYINT_F128,
355 RTLIB::NEARBYINT_PPCF128),
356 NVT, &Op, 1, false, SDLoc(N)).first;
359 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) {
360 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
361 // Expand Y = FNEG(X) -> Y = SUB -0.0, X
362 SDValue Ops[2] = { DAG.getConstantFP(-0.0, N->getValueType(0)),
363 GetSoftenedFloat(N->getOperand(0)) };
364 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
370 NVT, Ops, 2, false, SDLoc(N)).first;
373 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
374 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
375 SDValue Op = N->getOperand(0);
376 RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0));
377 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
378 return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)).first;
381 // FIXME: Should we just use 'normal' FP_EXTEND / FP_TRUNC instead of special
383 SDValue DAGTypeLegalizer::SoftenFloatRes_FP16_TO_FP(SDNode *N) {
384 EVT MidVT = TLI.getTypeToTransformTo(*DAG.getContext(), MVT::f32);
385 SDValue Op = N->getOperand(0);
386 SDValue Res32 = TLI.makeLibCall(DAG, RTLIB::FPEXT_F16_F32, MidVT, &Op, 1,
387 false, SDLoc(N)).first;
388 if (N->getValueType(0) == MVT::f32)
391 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
392 RTLIB::Libcall LC = RTLIB::getFPEXT(MVT::f32, N->getValueType(0));
393 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
394 return TLI.makeLibCall(DAG, LC, NVT, &Res32, 1, false, SDLoc(N)).first;
397 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) {
398 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
399 SDValue Op = N->getOperand(0);
400 RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0));
401 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!");
402 return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)).first;
405 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) {
406 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
407 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
408 GetSoftenedFloat(N->getOperand(1)) };
409 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
415 NVT, Ops, 2, false, SDLoc(N)).first;
418 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) {
419 assert(N->getOperand(1).getValueType() == MVT::i32 &&
420 "Unsupported power type!");
421 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
422 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) };
423 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
428 RTLIB::POWI_PPCF128),
429 NVT, Ops, 2, false, SDLoc(N)).first;
432 SDValue DAGTypeLegalizer::SoftenFloatRes_FREM(SDNode *N) {
433 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
434 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
435 GetSoftenedFloat(N->getOperand(1)) };
436 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
442 NVT, Ops, 2, false, SDLoc(N)).first;
445 SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) {
446 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
447 SDValue Op = GetSoftenedFloat(N->getOperand(0));
448 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
453 RTLIB::RINT_PPCF128),
454 NVT, &Op, 1, false, SDLoc(N)).first;
457 SDValue DAGTypeLegalizer::SoftenFloatRes_FROUND(SDNode *N) {
458 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
459 SDValue Op = GetSoftenedFloat(N->getOperand(0));
460 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
465 RTLIB::ROUND_PPCF128),
466 NVT, &Op, 1, false, SDLoc(N)).first;
469 SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) {
470 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
471 SDValue Op = GetSoftenedFloat(N->getOperand(0));
472 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
478 NVT, &Op, 1, false, SDLoc(N)).first;
481 SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) {
482 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
483 SDValue Op = GetSoftenedFloat(N->getOperand(0));
484 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
489 RTLIB::SQRT_PPCF128),
490 NVT, &Op, 1, false, SDLoc(N)).first;
493 SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
494 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
495 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
496 GetSoftenedFloat(N->getOperand(1)) };
497 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
503 NVT, Ops, 2, false, SDLoc(N)).first;
506 SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) {
507 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
508 SDValue Op = GetSoftenedFloat(N->getOperand(0));
509 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
514 RTLIB::TRUNC_PPCF128),
515 NVT, &Op, 1, false, SDLoc(N)).first;
518 SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) {
519 LoadSDNode *L = cast<LoadSDNode>(N);
520 EVT VT = N->getValueType(0);
521 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
525 if (L->getExtensionType() == ISD::NON_EXTLOAD) {
526 NewL = DAG.getLoad(L->getAddressingMode(), L->getExtensionType(),
527 NVT, dl, L->getChain(), L->getBasePtr(), L->getOffset(),
528 L->getPointerInfo(), NVT, L->isVolatile(),
529 L->isNonTemporal(), false, L->getAlignment(),
531 // Legalized the chain result - switch anything that used the old chain to
533 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
537 // Do a non-extending load followed by FP_EXTEND.
538 NewL = DAG.getLoad(L->getAddressingMode(), ISD::NON_EXTLOAD,
539 L->getMemoryVT(), dl, L->getChain(),
540 L->getBasePtr(), L->getOffset(), L->getPointerInfo(),
541 L->getMemoryVT(), L->isVolatile(),
542 L->isNonTemporal(), false, L->getAlignment(),
544 // Legalized the chain result - switch anything that used the old chain to
546 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
547 return BitConvertToInteger(DAG.getNode(ISD::FP_EXTEND, dl, VT, NewL));
550 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N) {
551 SDValue LHS = GetSoftenedFloat(N->getOperand(1));
552 SDValue RHS = GetSoftenedFloat(N->getOperand(2));
553 return DAG.getSelect(SDLoc(N),
554 LHS.getValueType(), N->getOperand(0), LHS, RHS);
557 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT_CC(SDNode *N) {
558 SDValue LHS = GetSoftenedFloat(N->getOperand(2));
559 SDValue RHS = GetSoftenedFloat(N->getOperand(3));
560 return DAG.getNode(ISD::SELECT_CC, SDLoc(N),
561 LHS.getValueType(), N->getOperand(0),
562 N->getOperand(1), LHS, RHS, N->getOperand(4));
565 SDValue DAGTypeLegalizer::SoftenFloatRes_UNDEF(SDNode *N) {
566 return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(),
567 N->getValueType(0)));
570 SDValue DAGTypeLegalizer::SoftenFloatRes_VAARG(SDNode *N) {
571 SDValue Chain = N->getOperand(0); // Get the chain.
572 SDValue Ptr = N->getOperand(1); // Get the pointer.
573 EVT VT = N->getValueType(0);
574 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
578 NewVAARG = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2),
579 N->getConstantOperandVal(3));
581 // Legalized the chain result - switch anything that used the old chain to
583 ReplaceValueWith(SDValue(N, 1), NewVAARG.getValue(1));
587 SDValue DAGTypeLegalizer::SoftenFloatRes_XINT_TO_FP(SDNode *N) {
588 bool Signed = N->getOpcode() == ISD::SINT_TO_FP;
589 EVT SVT = N->getOperand(0).getValueType();
590 EVT RVT = N->getValueType(0);
594 // If the input is not legal, eg: i1 -> fp, then it needs to be promoted to
595 // a larger type, eg: i8 -> fp. Even if it is legal, no libcall may exactly
596 // match. Look for an appropriate libcall.
597 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
598 for (unsigned t = MVT::FIRST_INTEGER_VALUETYPE;
599 t <= MVT::LAST_INTEGER_VALUETYPE && LC == RTLIB::UNKNOWN_LIBCALL; ++t) {
600 NVT = (MVT::SimpleValueType)t;
601 // The source needs to big enough to hold the operand.
603 LC = Signed ? RTLIB::getSINTTOFP(NVT, RVT):RTLIB::getUINTTOFP (NVT, RVT);
605 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
607 // Sign/zero extend the argument if the libcall takes a larger type.
608 SDValue Op = DAG.getNode(Signed ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
609 NVT, N->getOperand(0));
610 return TLI.makeLibCall(DAG, LC,
611 TLI.getTypeToTransformTo(*DAG.getContext(), RVT),
612 &Op, 1, false, dl).first;
616 //===----------------------------------------------------------------------===//
617 // Operand Float to Integer Conversion..
618 //===----------------------------------------------------------------------===//
620 bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) {
621 DEBUG(dbgs() << "Soften float operand " << OpNo << ": "; N->dump(&DAG);
623 SDValue Res = SDValue();
625 switch (N->getOpcode()) {
628 dbgs() << "SoftenFloatOperand Op #" << OpNo << ": ";
629 N->dump(&DAG); dbgs() << "\n";
631 llvm_unreachable("Do not know how to soften this operator's operand!");
633 case ISD::BITCAST: Res = SoftenFloatOp_BITCAST(N); break;
634 case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break;
635 case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break;
636 case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break;
637 case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_UINT(N); break;
638 case ISD::FP_TO_FP16: Res = SoftenFloatOp_FP_TO_FP16(N); break;
639 case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break;
640 case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break;
641 case ISD::STORE: Res = SoftenFloatOp_STORE(N, OpNo); break;
644 // If the result is null, the sub-method took care of registering results etc.
645 if (!Res.getNode()) return false;
647 // If the result is N, the sub-method updated N in place. Tell the legalizer
649 if (Res.getNode() == N)
652 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
653 "Invalid operand expansion");
655 ReplaceValueWith(SDValue(N, 0), Res);
659 SDValue DAGTypeLegalizer::SoftenFloatOp_BITCAST(SDNode *N) {
660 return DAG.getNode(ISD::BITCAST, SDLoc(N), N->getValueType(0),
661 GetSoftenedFloat(N->getOperand(0)));
664 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) {
665 EVT SVT = N->getOperand(0).getValueType();
666 EVT RVT = N->getValueType(0);
668 RTLIB::Libcall LC = RTLIB::getFPROUND(SVT, RVT);
669 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND libcall");
671 SDValue Op = GetSoftenedFloat(N->getOperand(0));
672 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first;
675 SDValue DAGTypeLegalizer::SoftenFloatOp_BR_CC(SDNode *N) {
676 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
677 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
679 EVT VT = NewLHS.getValueType();
680 NewLHS = GetSoftenedFloat(NewLHS);
681 NewRHS = GetSoftenedFloat(NewRHS);
682 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N));
684 // If softenSetCCOperands returned a scalar, we need to compare the result
685 // against zero to select between true and false values.
686 if (!NewRHS.getNode()) {
687 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
691 // Update N to have the operands specified.
692 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0),
693 DAG.getCondCode(CCCode), NewLHS, NewRHS,
698 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_SINT(SDNode *N) {
699 EVT RVT = N->getValueType(0);
700 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
701 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
702 SDValue Op = GetSoftenedFloat(N->getOperand(0));
703 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first;
706 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) {
707 EVT RVT = N->getValueType(0);
708 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
709 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
710 SDValue Op = GetSoftenedFloat(N->getOperand(0));
711 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first;
714 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_FP16(SDNode *N) {
715 assert(N->getOperand(0).getValueType() == MVT::f32 &&
716 "Cannot soften in one step");
717 EVT RVT = N->getValueType(0);
718 RTLIB::Libcall LC = RTLIB::FPROUND_F32_F16;
719 SDValue Op = GetSoftenedFloat(N->getOperand(0));
720 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first;
723 SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) {
724 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
725 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
727 EVT VT = NewLHS.getValueType();
728 NewLHS = GetSoftenedFloat(NewLHS);
729 NewRHS = GetSoftenedFloat(NewRHS);
730 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N));
732 // If softenSetCCOperands returned a scalar, we need to compare the result
733 // against zero to select between true and false values.
734 if (!NewRHS.getNode()) {
735 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
739 // Update N to have the operands specified.
740 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS,
741 N->getOperand(2), N->getOperand(3),
742 DAG.getCondCode(CCCode)),
746 SDValue DAGTypeLegalizer::SoftenFloatOp_SETCC(SDNode *N) {
747 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
748 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
750 EVT VT = NewLHS.getValueType();
751 NewLHS = GetSoftenedFloat(NewLHS);
752 NewRHS = GetSoftenedFloat(NewRHS);
753 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N));
755 // If softenSetCCOperands returned a scalar, use it.
756 if (!NewRHS.getNode()) {
757 assert(NewLHS.getValueType() == N->getValueType(0) &&
758 "Unexpected setcc expansion!");
762 // Otherwise, update N to have the operands specified.
763 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS,
764 DAG.getCondCode(CCCode)),
768 SDValue DAGTypeLegalizer::SoftenFloatOp_STORE(SDNode *N, unsigned OpNo) {
769 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
770 assert(OpNo == 1 && "Can only soften the stored value!");
771 StoreSDNode *ST = cast<StoreSDNode>(N);
772 SDValue Val = ST->getValue();
775 if (ST->isTruncatingStore())
776 // Do an FP_ROUND followed by a non-truncating store.
777 Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, dl, ST->getMemoryVT(),
778 Val, DAG.getIntPtrConstant(0)));
780 Val = GetSoftenedFloat(Val);
782 return DAG.getStore(ST->getChain(), dl, Val, ST->getBasePtr(),
783 ST->getMemOperand());
787 //===----------------------------------------------------------------------===//
788 // Float Result Expansion
789 //===----------------------------------------------------------------------===//
791 /// ExpandFloatResult - This method is called when the specified result of the
792 /// specified node is found to need expansion. At this point, the node may also
793 /// have invalid operands or may have other results that need promotion, we just
794 /// know that (at least) one result needs expansion.
795 void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) {
796 DEBUG(dbgs() << "Expand float result: "; N->dump(&DAG); dbgs() << "\n");
800 // See if the target wants to custom expand this node.
801 if (CustomLowerNode(N, N->getValueType(ResNo), true))
804 switch (N->getOpcode()) {
807 dbgs() << "ExpandFloatResult #" << ResNo << ": ";
808 N->dump(&DAG); dbgs() << "\n";
810 llvm_unreachable("Do not know how to expand the result of this operator!");
812 case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break;
813 case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break;
814 case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break;
816 case ISD::MERGE_VALUES: ExpandRes_MERGE_VALUES(N, ResNo, Lo, Hi); break;
817 case ISD::BITCAST: ExpandRes_BITCAST(N, Lo, Hi); break;
818 case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break;
819 case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break;
820 case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break;
821 case ISD::VAARG: ExpandRes_VAARG(N, Lo, Hi); break;
823 case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break;
824 case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break;
825 case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break;
826 case ISD::FCEIL: ExpandFloatRes_FCEIL(N, Lo, Hi); break;
827 case ISD::FCOPYSIGN: ExpandFloatRes_FCOPYSIGN(N, Lo, Hi); break;
828 case ISD::FCOS: ExpandFloatRes_FCOS(N, Lo, Hi); break;
829 case ISD::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break;
830 case ISD::FEXP: ExpandFloatRes_FEXP(N, Lo, Hi); break;
831 case ISD::FEXP2: ExpandFloatRes_FEXP2(N, Lo, Hi); break;
832 case ISD::FFLOOR: ExpandFloatRes_FFLOOR(N, Lo, Hi); break;
833 case ISD::FLOG: ExpandFloatRes_FLOG(N, Lo, Hi); break;
834 case ISD::FLOG2: ExpandFloatRes_FLOG2(N, Lo, Hi); break;
835 case ISD::FLOG10: ExpandFloatRes_FLOG10(N, Lo, Hi); break;
836 case ISD::FMA: ExpandFloatRes_FMA(N, Lo, Hi); break;
837 case ISD::FMUL: ExpandFloatRes_FMUL(N, Lo, Hi); break;
838 case ISD::FNEARBYINT: ExpandFloatRes_FNEARBYINT(N, Lo, Hi); break;
839 case ISD::FNEG: ExpandFloatRes_FNEG(N, Lo, Hi); break;
840 case ISD::FP_EXTEND: ExpandFloatRes_FP_EXTEND(N, Lo, Hi); break;
841 case ISD::FPOW: ExpandFloatRes_FPOW(N, Lo, Hi); break;
842 case ISD::FPOWI: ExpandFloatRes_FPOWI(N, Lo, Hi); break;
843 case ISD::FRINT: ExpandFloatRes_FRINT(N, Lo, Hi); break;
844 case ISD::FROUND: ExpandFloatRes_FROUND(N, Lo, Hi); break;
845 case ISD::FSIN: ExpandFloatRes_FSIN(N, Lo, Hi); break;
846 case ISD::FSQRT: ExpandFloatRes_FSQRT(N, Lo, Hi); break;
847 case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break;
848 case ISD::FTRUNC: ExpandFloatRes_FTRUNC(N, Lo, Hi); break;
849 case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break;
850 case ISD::SINT_TO_FP:
851 case ISD::UINT_TO_FP: ExpandFloatRes_XINT_TO_FP(N, Lo, Hi); break;
852 case ISD::FREM: ExpandFloatRes_FREM(N, Lo, Hi); break;
855 // If Lo/Hi is null, the sub-method took care of registering results etc.
857 SetExpandedFloat(SDValue(N, ResNo), Lo, Hi);
860 void DAGTypeLegalizer::ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo,
862 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
863 assert(NVT.getSizeInBits() == integerPartWidth &&
864 "Do not know how to expand this float constant!");
865 APInt C = cast<ConstantFPSDNode>(N)->getValueAPF().bitcastToAPInt();
866 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
867 APInt(integerPartWidth, C.getRawData()[1])),
869 Hi = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
870 APInt(integerPartWidth, C.getRawData()[0])),
874 void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo,
876 assert(N->getValueType(0) == MVT::ppcf128 &&
877 "Logic only correct for ppcf128!");
880 GetExpandedFloat(N->getOperand(0), Lo, Tmp);
881 Hi = DAG.getNode(ISD::FABS, dl, Tmp.getValueType(), Tmp);
882 // Lo = Hi==fabs(Hi) ? Lo : -Lo;
883 Lo = DAG.getSelectCC(dl, Tmp, Hi, Lo,
884 DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo),
888 void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo,
890 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
891 RTLIB::ADD_F32, RTLIB::ADD_F64,
892 RTLIB::ADD_F80, RTLIB::ADD_F128,
895 GetPairElements(Call, Lo, Hi);
898 void DAGTypeLegalizer::ExpandFloatRes_FCEIL(SDNode *N,
899 SDValue &Lo, SDValue &Hi) {
900 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
901 RTLIB::CEIL_F32, RTLIB::CEIL_F64,
902 RTLIB::CEIL_F80, RTLIB::CEIL_F128,
903 RTLIB::CEIL_PPCF128),
905 GetPairElements(Call, Lo, Hi);
908 void DAGTypeLegalizer::ExpandFloatRes_FCOPYSIGN(SDNode *N,
909 SDValue &Lo, SDValue &Hi) {
910 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
914 RTLIB::COPYSIGN_F128,
915 RTLIB::COPYSIGN_PPCF128),
917 GetPairElements(Call, Lo, Hi);
920 void DAGTypeLegalizer::ExpandFloatRes_FCOS(SDNode *N,
921 SDValue &Lo, SDValue &Hi) {
922 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
923 RTLIB::COS_F32, RTLIB::COS_F64,
924 RTLIB::COS_F80, RTLIB::COS_F128,
927 GetPairElements(Call, Lo, Hi);
930 void DAGTypeLegalizer::ExpandFloatRes_FDIV(SDNode *N, SDValue &Lo,
932 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
933 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
939 N->getValueType(0), Ops, 2, false,
941 GetPairElements(Call, Lo, Hi);
944 void DAGTypeLegalizer::ExpandFloatRes_FEXP(SDNode *N,
945 SDValue &Lo, SDValue &Hi) {
946 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
947 RTLIB::EXP_F32, RTLIB::EXP_F64,
948 RTLIB::EXP_F80, RTLIB::EXP_F128,
951 GetPairElements(Call, Lo, Hi);
954 void DAGTypeLegalizer::ExpandFloatRes_FEXP2(SDNode *N,
955 SDValue &Lo, SDValue &Hi) {
956 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
957 RTLIB::EXP2_F32, RTLIB::EXP2_F64,
958 RTLIB::EXP2_F80, RTLIB::EXP2_F128,
959 RTLIB::EXP2_PPCF128),
961 GetPairElements(Call, Lo, Hi);
964 void DAGTypeLegalizer::ExpandFloatRes_FFLOOR(SDNode *N,
965 SDValue &Lo, SDValue &Hi) {
966 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
967 RTLIB::FLOOR_F32, RTLIB::FLOOR_F64,
968 RTLIB::FLOOR_F80, RTLIB::FLOOR_F128,
969 RTLIB::FLOOR_PPCF128),
971 GetPairElements(Call, Lo, Hi);
974 void DAGTypeLegalizer::ExpandFloatRes_FLOG(SDNode *N,
975 SDValue &Lo, SDValue &Hi) {
976 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
977 RTLIB::LOG_F32, RTLIB::LOG_F64,
978 RTLIB::LOG_F80, RTLIB::LOG_F128,
981 GetPairElements(Call, Lo, Hi);
984 void DAGTypeLegalizer::ExpandFloatRes_FLOG2(SDNode *N,
985 SDValue &Lo, SDValue &Hi) {
986 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
987 RTLIB::LOG2_F32, RTLIB::LOG2_F64,
988 RTLIB::LOG2_F80, RTLIB::LOG2_F128,
989 RTLIB::LOG2_PPCF128),
991 GetPairElements(Call, Lo, Hi);
994 void DAGTypeLegalizer::ExpandFloatRes_FLOG10(SDNode *N,
995 SDValue &Lo, SDValue &Hi) {
996 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
997 RTLIB::LOG10_F32, RTLIB::LOG10_F64,
998 RTLIB::LOG10_F80, RTLIB::LOG10_F128,
999 RTLIB::LOG10_PPCF128),
1001 GetPairElements(Call, Lo, Hi);
1004 void DAGTypeLegalizer::ExpandFloatRes_FMA(SDNode *N, SDValue &Lo,
1006 SDValue Ops[3] = { N->getOperand(0), N->getOperand(1), N->getOperand(2) };
1007 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
1012 RTLIB::FMA_PPCF128),
1013 N->getValueType(0), Ops, 3, false,
1015 GetPairElements(Call, Lo, Hi);
1018 void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDValue &Lo,
1020 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
1021 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
1026 RTLIB::MUL_PPCF128),
1027 N->getValueType(0), Ops, 2, false,
1029 GetPairElements(Call, Lo, Hi);
1032 void DAGTypeLegalizer::ExpandFloatRes_FNEARBYINT(SDNode *N,
1033 SDValue &Lo, SDValue &Hi) {
1034 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1035 RTLIB::NEARBYINT_F32,
1036 RTLIB::NEARBYINT_F64,
1037 RTLIB::NEARBYINT_F80,
1038 RTLIB::NEARBYINT_F128,
1039 RTLIB::NEARBYINT_PPCF128),
1041 GetPairElements(Call, Lo, Hi);
1044 void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDValue &Lo,
1047 GetExpandedFloat(N->getOperand(0), Lo, Hi);
1048 Lo = DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo);
1049 Hi = DAG.getNode(ISD::FNEG, dl, Hi.getValueType(), Hi);
1052 void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo,
1054 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
1055 Hi = DAG.getNode(ISD::FP_EXTEND, SDLoc(N), NVT, N->getOperand(0));
1056 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
1057 APInt(NVT.getSizeInBits(), 0)), NVT);
1060 void DAGTypeLegalizer::ExpandFloatRes_FPOW(SDNode *N,
1061 SDValue &Lo, SDValue &Hi) {
1062 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1063 RTLIB::POW_F32, RTLIB::POW_F64,
1064 RTLIB::POW_F80, RTLIB::POW_F128,
1065 RTLIB::POW_PPCF128),
1067 GetPairElements(Call, Lo, Hi);
1070 void DAGTypeLegalizer::ExpandFloatRes_FPOWI(SDNode *N,
1071 SDValue &Lo, SDValue &Hi) {
1072 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1073 RTLIB::POWI_F32, RTLIB::POWI_F64,
1074 RTLIB::POWI_F80, RTLIB::POWI_F128,
1075 RTLIB::POWI_PPCF128),
1077 GetPairElements(Call, Lo, Hi);
1080 void DAGTypeLegalizer::ExpandFloatRes_FREM(SDNode *N,
1081 SDValue &Lo, SDValue &Hi) {
1082 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1083 RTLIB::REM_F32, RTLIB::REM_F64,
1084 RTLIB::REM_F80, RTLIB::REM_F128,
1085 RTLIB::REM_PPCF128),
1087 GetPairElements(Call, Lo, Hi);
1090 void DAGTypeLegalizer::ExpandFloatRes_FRINT(SDNode *N,
1091 SDValue &Lo, SDValue &Hi) {
1092 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1093 RTLIB::RINT_F32, RTLIB::RINT_F64,
1094 RTLIB::RINT_F80, RTLIB::RINT_F128,
1095 RTLIB::RINT_PPCF128),
1097 GetPairElements(Call, Lo, Hi);
1100 void DAGTypeLegalizer::ExpandFloatRes_FROUND(SDNode *N,
1101 SDValue &Lo, SDValue &Hi) {
1102 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1107 RTLIB::ROUND_PPCF128),
1109 GetPairElements(Call, Lo, Hi);
1112 void DAGTypeLegalizer::ExpandFloatRes_FSIN(SDNode *N,
1113 SDValue &Lo, SDValue &Hi) {
1114 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1115 RTLIB::SIN_F32, RTLIB::SIN_F64,
1116 RTLIB::SIN_F80, RTLIB::SIN_F128,
1117 RTLIB::SIN_PPCF128),
1119 GetPairElements(Call, Lo, Hi);
1122 void DAGTypeLegalizer::ExpandFloatRes_FSQRT(SDNode *N,
1123 SDValue &Lo, SDValue &Hi) {
1124 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1125 RTLIB::SQRT_F32, RTLIB::SQRT_F64,
1126 RTLIB::SQRT_F80, RTLIB::SQRT_F128,
1127 RTLIB::SQRT_PPCF128),
1129 GetPairElements(Call, Lo, Hi);
1132 void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo,
1134 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
1135 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
1140 RTLIB::SUB_PPCF128),
1141 N->getValueType(0), Ops, 2, false,
1143 GetPairElements(Call, Lo, Hi);
1146 void DAGTypeLegalizer::ExpandFloatRes_FTRUNC(SDNode *N,
1147 SDValue &Lo, SDValue &Hi) {
1148 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1149 RTLIB::TRUNC_F32, RTLIB::TRUNC_F64,
1150 RTLIB::TRUNC_F80, RTLIB::TRUNC_F128,
1151 RTLIB::TRUNC_PPCF128),
1153 GetPairElements(Call, Lo, Hi);
1156 void DAGTypeLegalizer::ExpandFloatRes_LOAD(SDNode *N, SDValue &Lo,
1158 if (ISD::isNormalLoad(N)) {
1159 ExpandRes_NormalLoad(N, Lo, Hi);
1163 assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!");
1164 LoadSDNode *LD = cast<LoadSDNode>(N);
1165 SDValue Chain = LD->getChain();
1166 SDValue Ptr = LD->getBasePtr();
1169 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), LD->getValueType(0));
1170 assert(NVT.isByteSized() && "Expanded type not byte sized!");
1171 assert(LD->getMemoryVT().bitsLE(NVT) && "Float type not round?");
1173 Hi = DAG.getExtLoad(LD->getExtensionType(), dl, NVT, Chain, Ptr,
1174 LD->getMemoryVT(), LD->getMemOperand());
1176 // Remember the chain.
1177 Chain = Hi.getValue(1);
1179 // The low part is zero.
1180 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
1181 APInt(NVT.getSizeInBits(), 0)), NVT);
1183 // Modified the chain - switch anything that used the old chain to use the
1185 ReplaceValueWith(SDValue(LD, 1), Chain);
1188 void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo,
1190 assert(N->getValueType(0) == MVT::ppcf128 && "Unsupported XINT_TO_FP!");
1191 EVT VT = N->getValueType(0);
1192 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
1193 SDValue Src = N->getOperand(0);
1194 EVT SrcVT = Src.getValueType();
1195 bool isSigned = N->getOpcode() == ISD::SINT_TO_FP;
1198 // First do an SINT_TO_FP, whether the original was signed or unsigned.
1199 // When promoting partial word types to i32 we must honor the signedness,
1201 if (SrcVT.bitsLE(MVT::i32)) {
1202 // The integer can be represented exactly in an f64.
1203 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
1205 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
1206 APInt(NVT.getSizeInBits(), 0)), NVT);
1207 Hi = DAG.getNode(ISD::SINT_TO_FP, dl, NVT, Src);
1209 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
1210 if (SrcVT.bitsLE(MVT::i64)) {
1211 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
1213 LC = RTLIB::SINTTOFP_I64_PPCF128;
1214 } else if (SrcVT.bitsLE(MVT::i128)) {
1215 Src = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i128, Src);
1216 LC = RTLIB::SINTTOFP_I128_PPCF128;
1218 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
1220 Hi = TLI.makeLibCall(DAG, LC, VT, &Src, 1, true, dl).first;
1221 GetPairElements(Hi, Lo, Hi);
1227 // Unsigned - fix up the SINT_TO_FP value just calculated.
1228 Hi = DAG.getNode(ISD::BUILD_PAIR, dl, VT, Lo, Hi);
1229 SrcVT = Src.getValueType();
1231 // x>=0 ? (ppcf128)(iN)x : (ppcf128)(iN)x + 2^N; N=32,64,128.
1232 static const uint64_t TwoE32[] = { 0x41f0000000000000LL, 0 };
1233 static const uint64_t TwoE64[] = { 0x43f0000000000000LL, 0 };
1234 static const uint64_t TwoE128[] = { 0x47f0000000000000LL, 0 };
1235 ArrayRef<uint64_t> Parts;
1237 switch (SrcVT.getSimpleVT().SimpleTy) {
1239 llvm_unreachable("Unsupported UINT_TO_FP!");
1251 Lo = DAG.getNode(ISD::FADD, dl, VT, Hi,
1252 DAG.getConstantFP(APFloat(APFloat::PPCDoubleDouble,
1255 Lo = DAG.getSelectCC(dl, Src, DAG.getConstant(0, SrcVT),
1256 Lo, Hi, ISD::SETLT);
1257 GetPairElements(Lo, Lo, Hi);
1261 //===----------------------------------------------------------------------===//
1262 // Float Operand Expansion
1263 //===----------------------------------------------------------------------===//
1265 /// ExpandFloatOperand - This method is called when the specified operand of the
1266 /// specified node is found to need expansion. At this point, all of the result
1267 /// types of the node are known to be legal, but other operands of the node may
1268 /// need promotion or expansion as well as the specified one.
1269 bool DAGTypeLegalizer::ExpandFloatOperand(SDNode *N, unsigned OpNo) {
1270 DEBUG(dbgs() << "Expand float operand: "; N->dump(&DAG); dbgs() << "\n");
1271 SDValue Res = SDValue();
1273 // See if the target wants to custom expand this node.
1274 if (CustomLowerNode(N, N->getOperand(OpNo).getValueType(), false))
1277 switch (N->getOpcode()) {
1280 dbgs() << "ExpandFloatOperand Op #" << OpNo << ": ";
1281 N->dump(&DAG); dbgs() << "\n";
1283 llvm_unreachable("Do not know how to expand this operator's operand!");
1285 case ISD::BITCAST: Res = ExpandOp_BITCAST(N); break;
1286 case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break;
1287 case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break;
1289 case ISD::BR_CC: Res = ExpandFloatOp_BR_CC(N); break;
1290 case ISD::FCOPYSIGN: Res = ExpandFloatOp_FCOPYSIGN(N); break;
1291 case ISD::FP_ROUND: Res = ExpandFloatOp_FP_ROUND(N); break;
1292 case ISD::FP_TO_SINT: Res = ExpandFloatOp_FP_TO_SINT(N); break;
1293 case ISD::FP_TO_UINT: Res = ExpandFloatOp_FP_TO_UINT(N); break;
1294 case ISD::SELECT_CC: Res = ExpandFloatOp_SELECT_CC(N); break;
1295 case ISD::SETCC: Res = ExpandFloatOp_SETCC(N); break;
1296 case ISD::STORE: Res = ExpandFloatOp_STORE(cast<StoreSDNode>(N),
1300 // If the result is null, the sub-method took care of registering results etc.
1301 if (!Res.getNode()) return false;
1303 // If the result is N, the sub-method updated N in place. Tell the legalizer
1305 if (Res.getNode() == N)
1308 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
1309 "Invalid operand expansion");
1311 ReplaceValueWith(SDValue(N, 0), Res);
1315 /// FloatExpandSetCCOperands - Expand the operands of a comparison. This code
1316 /// is shared among BR_CC, SELECT_CC, and SETCC handlers.
1317 void DAGTypeLegalizer::FloatExpandSetCCOperands(SDValue &NewLHS,
1319 ISD::CondCode &CCCode,
1321 SDValue LHSLo, LHSHi, RHSLo, RHSHi;
1322 GetExpandedFloat(NewLHS, LHSLo, LHSHi);
1323 GetExpandedFloat(NewRHS, RHSLo, RHSHi);
1325 assert(NewLHS.getValueType() == MVT::ppcf128 && "Unsupported setcc type!");
1327 // FIXME: This generated code sucks. We want to generate
1328 // FCMPU crN, hi1, hi2
1330 // FCMPU crN, lo1, lo2
1331 // The following can be improved, but not that much.
1332 SDValue Tmp1, Tmp2, Tmp3;
1333 Tmp1 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()),
1334 LHSHi, RHSHi, ISD::SETOEQ);
1335 Tmp2 = DAG.getSetCC(dl, getSetCCResultType(LHSLo.getValueType()),
1336 LHSLo, RHSLo, CCCode);
1337 Tmp3 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2);
1338 Tmp1 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()),
1339 LHSHi, RHSHi, ISD::SETUNE);
1340 Tmp2 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()),
1341 LHSHi, RHSHi, CCCode);
1342 Tmp1 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2);
1343 NewLHS = DAG.getNode(ISD::OR, dl, Tmp1.getValueType(), Tmp1, Tmp3);
1344 NewRHS = SDValue(); // LHS is the result, not a compare.
1347 SDValue DAGTypeLegalizer::ExpandFloatOp_BR_CC(SDNode *N) {
1348 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
1349 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
1350 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N));
1352 // If ExpandSetCCOperands returned a scalar, we need to compare the result
1353 // against zero to select between true and false values.
1354 if (!NewRHS.getNode()) {
1355 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
1356 CCCode = ISD::SETNE;
1359 // Update N to have the operands specified.
1360 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0),
1361 DAG.getCondCode(CCCode), NewLHS, NewRHS,
1362 N->getOperand(4)), 0);
1365 SDValue DAGTypeLegalizer::ExpandFloatOp_FCOPYSIGN(SDNode *N) {
1366 assert(N->getOperand(1).getValueType() == MVT::ppcf128 &&
1367 "Logic only correct for ppcf128!");
1369 GetExpandedFloat(N->getOperand(1), Lo, Hi);
1370 // The ppcf128 value is providing only the sign; take it from the
1371 // higher-order double (which must have the larger magnitude).
1372 return DAG.getNode(ISD::FCOPYSIGN, SDLoc(N),
1373 N->getValueType(0), N->getOperand(0), Hi);
1376 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_ROUND(SDNode *N) {
1377 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1378 "Logic only correct for ppcf128!");
1380 GetExpandedFloat(N->getOperand(0), Lo, Hi);
1381 // Round it the rest of the way (e.g. to f32) if needed.
1382 return DAG.getNode(ISD::FP_ROUND, SDLoc(N),
1383 N->getValueType(0), Hi, N->getOperand(1));
1386 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) {
1387 EVT RVT = N->getValueType(0);
1390 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
1391 // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
1392 if (RVT == MVT::i32) {
1393 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1394 "Logic only correct for ppcf128!");
1395 SDValue Res = DAG.getNode(ISD::FP_ROUND_INREG, dl, MVT::ppcf128,
1396 N->getOperand(0), DAG.getValueType(MVT::f64));
1397 Res = DAG.getNode(ISD::FP_ROUND, dl, MVT::f64, Res,
1398 DAG.getIntPtrConstant(1));
1399 return DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, Res);
1402 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
1403 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
1404 return TLI.makeLibCall(DAG, LC, RVT, &N->getOperand(0), 1, false, dl).first;
1407 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) {
1408 EVT RVT = N->getValueType(0);
1411 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
1412 // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
1413 if (RVT == MVT::i32) {
1414 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1415 "Logic only correct for ppcf128!");
1416 const uint64_t TwoE31[] = {0x41e0000000000000LL, 0};
1417 APFloat APF = APFloat(APFloat::PPCDoubleDouble, APInt(128, TwoE31));
1418 SDValue Tmp = DAG.getConstantFP(APF, MVT::ppcf128);
1419 // X>=2^31 ? (int)(X-2^31)+0x80000000 : (int)X
1420 // FIXME: generated code sucks.
1421 return DAG.getSelectCC(dl, N->getOperand(0), Tmp,
1422 DAG.getNode(ISD::ADD, dl, MVT::i32,
1423 DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32,
1424 DAG.getNode(ISD::FSUB, dl,
1428 DAG.getConstant(0x80000000, MVT::i32)),
1429 DAG.getNode(ISD::FP_TO_SINT, dl,
1430 MVT::i32, N->getOperand(0)),
1434 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
1435 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
1436 return TLI.makeLibCall(DAG, LC, N->getValueType(0), &N->getOperand(0), 1,
1440 SDValue DAGTypeLegalizer::ExpandFloatOp_SELECT_CC(SDNode *N) {
1441 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
1442 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
1443 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N));
1445 // If ExpandSetCCOperands returned a scalar, we need to compare the result
1446 // against zero to select between true and false values.
1447 if (!NewRHS.getNode()) {
1448 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
1449 CCCode = ISD::SETNE;
1452 // Update N to have the operands specified.
1453 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS,
1454 N->getOperand(2), N->getOperand(3),
1455 DAG.getCondCode(CCCode)), 0);
1458 SDValue DAGTypeLegalizer::ExpandFloatOp_SETCC(SDNode *N) {
1459 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
1460 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
1461 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N));
1463 // If ExpandSetCCOperands returned a scalar, use it.
1464 if (!NewRHS.getNode()) {
1465 assert(NewLHS.getValueType() == N->getValueType(0) &&
1466 "Unexpected setcc expansion!");
1470 // Otherwise, update N to have the operands specified.
1471 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS,
1472 DAG.getCondCode(CCCode)), 0);
1475 SDValue DAGTypeLegalizer::ExpandFloatOp_STORE(SDNode *N, unsigned OpNo) {
1476 if (ISD::isNormalStore(N))
1477 return ExpandOp_NormalStore(N, OpNo);
1479 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
1480 assert(OpNo == 1 && "Can only expand the stored value so far");
1481 StoreSDNode *ST = cast<StoreSDNode>(N);
1483 SDValue Chain = ST->getChain();
1484 SDValue Ptr = ST->getBasePtr();
1486 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(),
1487 ST->getValue().getValueType());
1488 assert(NVT.isByteSized() && "Expanded type not byte sized!");
1489 assert(ST->getMemoryVT().bitsLE(NVT) && "Float type not round?");
1493 GetExpandedOp(ST->getValue(), Lo, Hi);
1495 return DAG.getTruncStore(Chain, SDLoc(N), Hi, Ptr,
1496 ST->getMemoryVT(), ST->getMemOperand());