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 #define DEBUG_TYPE "legalize-types"
23 #include "LegalizeTypes.h"
24 #include "llvm/Support/ErrorHandling.h"
25 #include "llvm/Support/raw_ostream.h"
28 /// GetFPLibCall - Return the right libcall for the given floating point type.
29 static RTLIB::Libcall GetFPLibCall(EVT VT,
30 RTLIB::Libcall Call_F32,
31 RTLIB::Libcall Call_F64,
32 RTLIB::Libcall Call_F80,
33 RTLIB::Libcall Call_F128,
34 RTLIB::Libcall Call_PPCF128) {
36 VT == MVT::f32 ? Call_F32 :
37 VT == MVT::f64 ? Call_F64 :
38 VT == MVT::f80 ? Call_F80 :
39 VT == MVT::f128 ? Call_F128 :
40 VT == MVT::ppcf128 ? Call_PPCF128 :
41 RTLIB::UNKNOWN_LIBCALL;
44 //===----------------------------------------------------------------------===//
45 // Result Float to Integer Conversion.
46 //===----------------------------------------------------------------------===//
48 void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) {
49 DEBUG(dbgs() << "Soften float result " << ResNo << ": "; N->dump(&DAG);
51 SDValue R = SDValue();
53 switch (N->getOpcode()) {
56 dbgs() << "SoftenFloatResult #" << ResNo << ": ";
57 N->dump(&DAG); dbgs() << "\n";
59 llvm_unreachable("Do not know how to soften the result of this operator!");
61 case ISD::MERGE_VALUES:R = SoftenFloatRes_MERGE_VALUES(N, ResNo); break;
62 case ISD::BITCAST: R = SoftenFloatRes_BITCAST(N); break;
63 case ISD::BUILD_PAIR: R = SoftenFloatRes_BUILD_PAIR(N); break;
65 R = SoftenFloatRes_ConstantFP(cast<ConstantFPSDNode>(N));
67 case ISD::EXTRACT_VECTOR_ELT:
68 R = SoftenFloatRes_EXTRACT_VECTOR_ELT(N); break;
69 case ISD::FABS: R = SoftenFloatRes_FABS(N); break;
70 case ISD::FADD: R = SoftenFloatRes_FADD(N); break;
71 case ISD::FCEIL: R = SoftenFloatRes_FCEIL(N); break;
72 case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break;
73 case ISD::FCOS: R = SoftenFloatRes_FCOS(N); break;
74 case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break;
75 case ISD::FEXP: R = SoftenFloatRes_FEXP(N); break;
76 case ISD::FEXP2: R = SoftenFloatRes_FEXP2(N); break;
77 case ISD::FFLOOR: R = SoftenFloatRes_FFLOOR(N); break;
78 case ISD::FLOG: R = SoftenFloatRes_FLOG(N); break;
79 case ISD::FLOG2: R = SoftenFloatRes_FLOG2(N); break;
80 case ISD::FLOG10: R = SoftenFloatRes_FLOG10(N); break;
81 case ISD::FMA: R = SoftenFloatRes_FMA(N); break;
82 case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break;
83 case ISD::FNEARBYINT: R = SoftenFloatRes_FNEARBYINT(N); break;
84 case ISD::FNEG: R = SoftenFloatRes_FNEG(N); break;
85 case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break;
86 case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break;
87 case ISD::FP16_TO_FP32:R = SoftenFloatRes_FP16_TO_FP32(N); break;
88 case ISD::FPOW: R = SoftenFloatRes_FPOW(N); break;
89 case ISD::FPOWI: R = SoftenFloatRes_FPOWI(N); break;
90 case ISD::FREM: R = SoftenFloatRes_FREM(N); break;
91 case ISD::FRINT: R = SoftenFloatRes_FRINT(N); break;
92 case ISD::FROUND: R = SoftenFloatRes_FROUND(N); break;
93 case ISD::FSIN: R = SoftenFloatRes_FSIN(N); break;
94 case ISD::FSQRT: R = SoftenFloatRes_FSQRT(N); break;
95 case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break;
96 case ISD::FTRUNC: R = SoftenFloatRes_FTRUNC(N); break;
97 case ISD::LOAD: R = SoftenFloatRes_LOAD(N); break;
98 case ISD::SELECT: R = SoftenFloatRes_SELECT(N); break;
99 case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N); break;
100 case ISD::SINT_TO_FP:
101 case ISD::UINT_TO_FP: R = SoftenFloatRes_XINT_TO_FP(N); break;
102 case ISD::UNDEF: R = SoftenFloatRes_UNDEF(N); break;
103 case ISD::VAARG: R = SoftenFloatRes_VAARG(N); break;
106 // If R is null, the sub-method took care of registering the result.
108 SetSoftenedFloat(SDValue(N, ResNo), R);
111 SDValue DAGTypeLegalizer::SoftenFloatRes_BITCAST(SDNode *N) {
112 return BitConvertToInteger(N->getOperand(0));
115 SDValue DAGTypeLegalizer::SoftenFloatRes_MERGE_VALUES(SDNode *N,
117 SDValue Op = DisintegrateMERGE_VALUES(N, ResNo);
118 return BitConvertToInteger(Op);
121 SDValue DAGTypeLegalizer::SoftenFloatRes_BUILD_PAIR(SDNode *N) {
122 // Convert the inputs to integers, and build a new pair out of them.
123 return DAG.getNode(ISD::BUILD_PAIR, SDLoc(N),
124 TLI.getTypeToTransformTo(*DAG.getContext(),
126 BitConvertToInteger(N->getOperand(0)),
127 BitConvertToInteger(N->getOperand(1)));
130 SDValue DAGTypeLegalizer::SoftenFloatRes_ConstantFP(ConstantFPSDNode *N) {
131 return DAG.getConstant(N->getValueAPF().bitcastToAPInt(),
132 TLI.getTypeToTransformTo(*DAG.getContext(),
133 N->getValueType(0)));
136 SDValue DAGTypeLegalizer::SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N) {
137 SDValue NewOp = BitConvertVectorToIntegerVector(N->getOperand(0));
138 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SDLoc(N),
139 NewOp.getValueType().getVectorElementType(),
140 NewOp, N->getOperand(1));
143 SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) {
144 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
145 unsigned Size = NVT.getSizeInBits();
147 // Mask = ~(1 << (Size-1))
148 APInt API = APInt::getAllOnesValue(Size);
149 API.clearBit(Size-1);
150 SDValue Mask = DAG.getConstant(API, NVT);
151 SDValue Op = GetSoftenedFloat(N->getOperand(0));
152 return DAG.getNode(ISD::AND, SDLoc(N), NVT, Op, Mask);
155 SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) {
156 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
157 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
158 GetSoftenedFloat(N->getOperand(1)) };
159 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
165 NVT, Ops, 2, false, SDLoc(N)).first;
168 SDValue DAGTypeLegalizer::SoftenFloatRes_FCEIL(SDNode *N) {
169 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
170 SDValue Op = GetSoftenedFloat(N->getOperand(0));
171 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
176 RTLIB::CEIL_PPCF128),
177 NVT, &Op, 1, false, SDLoc(N)).first;
180 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) {
181 SDValue LHS = GetSoftenedFloat(N->getOperand(0));
182 SDValue RHS = BitConvertToInteger(N->getOperand(1));
185 EVT LVT = LHS.getValueType();
186 EVT RVT = RHS.getValueType();
188 unsigned LSize = LVT.getSizeInBits();
189 unsigned RSize = RVT.getSizeInBits();
191 // First get the sign bit of second operand.
192 SDValue SignBit = DAG.getNode(ISD::SHL, dl, RVT, DAG.getConstant(1, RVT),
193 DAG.getConstant(RSize - 1,
194 TLI.getShiftAmountTy(RVT)));
195 SignBit = DAG.getNode(ISD::AND, dl, RVT, RHS, SignBit);
197 // Shift right or sign-extend it if the two operands have different types.
198 int SizeDiff = RVT.getSizeInBits() - LVT.getSizeInBits();
200 SignBit = DAG.getNode(ISD::SRL, dl, RVT, SignBit,
201 DAG.getConstant(SizeDiff,
202 TLI.getShiftAmountTy(SignBit.getValueType())));
203 SignBit = DAG.getNode(ISD::TRUNCATE, dl, LVT, SignBit);
204 } else if (SizeDiff < 0) {
205 SignBit = DAG.getNode(ISD::ANY_EXTEND, dl, LVT, SignBit);
206 SignBit = DAG.getNode(ISD::SHL, dl, LVT, SignBit,
207 DAG.getConstant(-SizeDiff,
208 TLI.getShiftAmountTy(SignBit.getValueType())));
211 // Clear the sign bit of the first operand.
212 SDValue Mask = DAG.getNode(ISD::SHL, dl, LVT, DAG.getConstant(1, LVT),
213 DAG.getConstant(LSize - 1,
214 TLI.getShiftAmountTy(LVT)));
215 Mask = DAG.getNode(ISD::SUB, dl, LVT, Mask, DAG.getConstant(1, LVT));
216 LHS = DAG.getNode(ISD::AND, dl, LVT, LHS, Mask);
218 // Or the value with the sign bit.
219 return DAG.getNode(ISD::OR, dl, LVT, LHS, SignBit);
222 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) {
223 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
224 SDValue Op = GetSoftenedFloat(N->getOperand(0));
225 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
231 NVT, &Op, 1, false, SDLoc(N)).first;
234 SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
235 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
236 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
237 GetSoftenedFloat(N->getOperand(1)) };
238 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
244 NVT, Ops, 2, false, SDLoc(N)).first;
247 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) {
248 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
249 SDValue Op = GetSoftenedFloat(N->getOperand(0));
250 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
256 NVT, &Op, 1, false, SDLoc(N)).first;
259 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) {
260 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
261 SDValue Op = GetSoftenedFloat(N->getOperand(0));
262 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
267 RTLIB::EXP2_PPCF128),
268 NVT, &Op, 1, false, SDLoc(N)).first;
271 SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) {
272 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
273 SDValue Op = GetSoftenedFloat(N->getOperand(0));
274 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
279 RTLIB::FLOOR_PPCF128),
280 NVT, &Op, 1, false, SDLoc(N)).first;
283 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) {
284 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
285 SDValue Op = GetSoftenedFloat(N->getOperand(0));
286 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
292 NVT, &Op, 1, false, SDLoc(N)).first;
295 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) {
296 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
297 SDValue Op = GetSoftenedFloat(N->getOperand(0));
298 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
303 RTLIB::LOG2_PPCF128),
304 NVT, &Op, 1, false, SDLoc(N)).first;
307 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) {
308 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
309 SDValue Op = GetSoftenedFloat(N->getOperand(0));
310 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
315 RTLIB::LOG10_PPCF128),
316 NVT, &Op, 1, false, SDLoc(N)).first;
319 SDValue DAGTypeLegalizer::SoftenFloatRes_FMA(SDNode *N) {
320 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
321 SDValue Ops[3] = { GetSoftenedFloat(N->getOperand(0)),
322 GetSoftenedFloat(N->getOperand(1)),
323 GetSoftenedFloat(N->getOperand(2)) };
324 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
330 NVT, Ops, 3, false, SDLoc(N)).first;
333 SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
334 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
335 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
336 GetSoftenedFloat(N->getOperand(1)) };
337 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
343 NVT, Ops, 2, false, SDLoc(N)).first;
346 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) {
347 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
348 SDValue Op = GetSoftenedFloat(N->getOperand(0));
349 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
350 RTLIB::NEARBYINT_F32,
351 RTLIB::NEARBYINT_F64,
352 RTLIB::NEARBYINT_F80,
353 RTLIB::NEARBYINT_F128,
354 RTLIB::NEARBYINT_PPCF128),
355 NVT, &Op, 1, false, SDLoc(N)).first;
358 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) {
359 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
360 // Expand Y = FNEG(X) -> Y = SUB -0.0, X
361 SDValue Ops[2] = { DAG.getConstantFP(-0.0, N->getValueType(0)),
362 GetSoftenedFloat(N->getOperand(0)) };
363 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
369 NVT, Ops, 2, false, SDLoc(N)).first;
372 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
373 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
374 SDValue Op = N->getOperand(0);
375 RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0));
376 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
377 return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)).first;
380 // FIXME: Should we just use 'normal' FP_EXTEND / FP_TRUNC instead of special
382 SDValue DAGTypeLegalizer::SoftenFloatRes_FP16_TO_FP32(SDNode *N) {
383 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
384 SDValue Op = N->getOperand(0);
385 return TLI.makeLibCall(DAG, RTLIB::FPEXT_F16_F32, NVT, &Op, 1, false,
389 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) {
390 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
391 SDValue Op = N->getOperand(0);
392 RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0));
393 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!");
394 return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)).first;
397 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) {
398 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
399 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
400 GetSoftenedFloat(N->getOperand(1)) };
401 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
407 NVT, Ops, 2, false, SDLoc(N)).first;
410 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) {
411 assert(N->getOperand(1).getValueType() == MVT::i32 &&
412 "Unsupported power type!");
413 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
414 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) };
415 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
420 RTLIB::POWI_PPCF128),
421 NVT, Ops, 2, false, SDLoc(N)).first;
424 SDValue DAGTypeLegalizer::SoftenFloatRes_FREM(SDNode *N) {
425 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
426 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
427 GetSoftenedFloat(N->getOperand(1)) };
428 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
434 NVT, Ops, 2, false, SDLoc(N)).first;
437 SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) {
438 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
439 SDValue Op = GetSoftenedFloat(N->getOperand(0));
440 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
445 RTLIB::RINT_PPCF128),
446 NVT, &Op, 1, false, SDLoc(N)).first;
449 SDValue DAGTypeLegalizer::SoftenFloatRes_FROUND(SDNode *N) {
450 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
451 SDValue Op = GetSoftenedFloat(N->getOperand(0));
452 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
457 RTLIB::ROUND_PPCF128),
458 NVT, &Op, 1, false, SDLoc(N)).first;
461 SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) {
462 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
463 SDValue Op = GetSoftenedFloat(N->getOperand(0));
464 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
470 NVT, &Op, 1, false, SDLoc(N)).first;
473 SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) {
474 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
475 SDValue Op = GetSoftenedFloat(N->getOperand(0));
476 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
481 RTLIB::SQRT_PPCF128),
482 NVT, &Op, 1, false, SDLoc(N)).first;
485 SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
486 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
487 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
488 GetSoftenedFloat(N->getOperand(1)) };
489 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
495 NVT, Ops, 2, false, SDLoc(N)).first;
498 SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) {
499 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
500 SDValue Op = GetSoftenedFloat(N->getOperand(0));
501 return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
506 RTLIB::TRUNC_PPCF128),
507 NVT, &Op, 1, false, SDLoc(N)).first;
510 SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) {
511 LoadSDNode *L = cast<LoadSDNode>(N);
512 EVT VT = N->getValueType(0);
513 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
517 if (L->getExtensionType() == ISD::NON_EXTLOAD) {
518 NewL = DAG.getLoad(L->getAddressingMode(), L->getExtensionType(),
519 NVT, dl, L->getChain(), L->getBasePtr(), L->getOffset(),
520 L->getPointerInfo(), NVT, L->isVolatile(),
521 L->isNonTemporal(), false, L->getAlignment(),
523 // Legalized the chain result - switch anything that used the old chain to
525 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
529 // Do a non-extending load followed by FP_EXTEND.
530 NewL = DAG.getLoad(L->getAddressingMode(), ISD::NON_EXTLOAD,
531 L->getMemoryVT(), dl, L->getChain(),
532 L->getBasePtr(), L->getOffset(), L->getPointerInfo(),
533 L->getMemoryVT(), L->isVolatile(),
534 L->isNonTemporal(), false, L->getAlignment(),
536 // Legalized the chain result - switch anything that used the old chain to
538 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
539 return BitConvertToInteger(DAG.getNode(ISD::FP_EXTEND, dl, VT, NewL));
542 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N) {
543 SDValue LHS = GetSoftenedFloat(N->getOperand(1));
544 SDValue RHS = GetSoftenedFloat(N->getOperand(2));
545 return DAG.getSelect(SDLoc(N),
546 LHS.getValueType(), N->getOperand(0), LHS, RHS);
549 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT_CC(SDNode *N) {
550 SDValue LHS = GetSoftenedFloat(N->getOperand(2));
551 SDValue RHS = GetSoftenedFloat(N->getOperand(3));
552 return DAG.getNode(ISD::SELECT_CC, SDLoc(N),
553 LHS.getValueType(), N->getOperand(0),
554 N->getOperand(1), LHS, RHS, N->getOperand(4));
557 SDValue DAGTypeLegalizer::SoftenFloatRes_UNDEF(SDNode *N) {
558 return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(),
559 N->getValueType(0)));
562 SDValue DAGTypeLegalizer::SoftenFloatRes_VAARG(SDNode *N) {
563 SDValue Chain = N->getOperand(0); // Get the chain.
564 SDValue Ptr = N->getOperand(1); // Get the pointer.
565 EVT VT = N->getValueType(0);
566 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
570 NewVAARG = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2),
571 N->getConstantOperandVal(3));
573 // Legalized the chain result - switch anything that used the old chain to
575 ReplaceValueWith(SDValue(N, 1), NewVAARG.getValue(1));
579 SDValue DAGTypeLegalizer::SoftenFloatRes_XINT_TO_FP(SDNode *N) {
580 bool Signed = N->getOpcode() == ISD::SINT_TO_FP;
581 EVT SVT = N->getOperand(0).getValueType();
582 EVT RVT = N->getValueType(0);
586 // If the input is not legal, eg: i1 -> fp, then it needs to be promoted to
587 // a larger type, eg: i8 -> fp. Even if it is legal, no libcall may exactly
588 // match. Look for an appropriate libcall.
589 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
590 for (unsigned t = MVT::FIRST_INTEGER_VALUETYPE;
591 t <= MVT::LAST_INTEGER_VALUETYPE && LC == RTLIB::UNKNOWN_LIBCALL; ++t) {
592 NVT = (MVT::SimpleValueType)t;
593 // The source needs to big enough to hold the operand.
595 LC = Signed ? RTLIB::getSINTTOFP(NVT, RVT):RTLIB::getUINTTOFP (NVT, RVT);
597 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
599 // Sign/zero extend the argument if the libcall takes a larger type.
600 SDValue Op = DAG.getNode(Signed ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
601 NVT, N->getOperand(0));
602 return TLI.makeLibCall(DAG, LC,
603 TLI.getTypeToTransformTo(*DAG.getContext(), RVT),
604 &Op, 1, false, dl).first;
608 //===----------------------------------------------------------------------===//
609 // Operand Float to Integer Conversion..
610 //===----------------------------------------------------------------------===//
612 bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) {
613 DEBUG(dbgs() << "Soften float operand " << OpNo << ": "; N->dump(&DAG);
615 SDValue Res = SDValue();
617 switch (N->getOpcode()) {
620 dbgs() << "SoftenFloatOperand Op #" << OpNo << ": ";
621 N->dump(&DAG); dbgs() << "\n";
623 llvm_unreachable("Do not know how to soften this operator's operand!");
625 case ISD::BITCAST: Res = SoftenFloatOp_BITCAST(N); break;
626 case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break;
627 case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break;
628 case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break;
629 case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_UINT(N); break;
630 case ISD::FP32_TO_FP16:Res = SoftenFloatOp_FP32_TO_FP16(N); break;
631 case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break;
632 case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break;
633 case ISD::STORE: Res = SoftenFloatOp_STORE(N, OpNo); break;
636 // If the result is null, the sub-method took care of registering results etc.
637 if (!Res.getNode()) return false;
639 // If the result is N, the sub-method updated N in place. Tell the legalizer
641 if (Res.getNode() == N)
644 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
645 "Invalid operand expansion");
647 ReplaceValueWith(SDValue(N, 0), Res);
651 SDValue DAGTypeLegalizer::SoftenFloatOp_BITCAST(SDNode *N) {
652 return DAG.getNode(ISD::BITCAST, SDLoc(N), N->getValueType(0),
653 GetSoftenedFloat(N->getOperand(0)));
656 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) {
657 EVT SVT = N->getOperand(0).getValueType();
658 EVT RVT = N->getValueType(0);
660 RTLIB::Libcall LC = RTLIB::getFPROUND(SVT, RVT);
661 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND libcall");
663 SDValue Op = GetSoftenedFloat(N->getOperand(0));
664 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first;
667 SDValue DAGTypeLegalizer::SoftenFloatOp_BR_CC(SDNode *N) {
668 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
669 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
671 EVT VT = NewLHS.getValueType();
672 NewLHS = GetSoftenedFloat(NewLHS);
673 NewRHS = GetSoftenedFloat(NewRHS);
674 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N));
676 // If softenSetCCOperands returned a scalar, we need to compare the result
677 // against zero to select between true and false values.
678 if (!NewRHS.getNode()) {
679 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
683 // Update N to have the operands specified.
684 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0),
685 DAG.getCondCode(CCCode), NewLHS, NewRHS,
690 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_SINT(SDNode *N) {
691 EVT RVT = N->getValueType(0);
692 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
693 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
694 SDValue Op = GetSoftenedFloat(N->getOperand(0));
695 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first;
698 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) {
699 EVT RVT = N->getValueType(0);
700 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
701 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
702 SDValue Op = GetSoftenedFloat(N->getOperand(0));
703 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first;
706 SDValue DAGTypeLegalizer::SoftenFloatOp_FP32_TO_FP16(SDNode *N) {
707 EVT RVT = N->getValueType(0);
708 RTLIB::Libcall LC = RTLIB::FPROUND_F32_F16;
709 SDValue Op = GetSoftenedFloat(N->getOperand(0));
710 return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first;
713 SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) {
714 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
715 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
717 EVT VT = NewLHS.getValueType();
718 NewLHS = GetSoftenedFloat(NewLHS);
719 NewRHS = GetSoftenedFloat(NewRHS);
720 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N));
722 // If softenSetCCOperands returned a scalar, we need to compare the result
723 // against zero to select between true and false values.
724 if (!NewRHS.getNode()) {
725 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
729 // Update N to have the operands specified.
730 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS,
731 N->getOperand(2), N->getOperand(3),
732 DAG.getCondCode(CCCode)),
736 SDValue DAGTypeLegalizer::SoftenFloatOp_SETCC(SDNode *N) {
737 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
738 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
740 EVT VT = NewLHS.getValueType();
741 NewLHS = GetSoftenedFloat(NewLHS);
742 NewRHS = GetSoftenedFloat(NewRHS);
743 TLI.softenSetCCOperands(DAG, VT, NewLHS, NewRHS, CCCode, SDLoc(N));
745 // If softenSetCCOperands returned a scalar, use it.
746 if (!NewRHS.getNode()) {
747 assert(NewLHS.getValueType() == N->getValueType(0) &&
748 "Unexpected setcc expansion!");
752 // Otherwise, update N to have the operands specified.
753 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS,
754 DAG.getCondCode(CCCode)),
758 SDValue DAGTypeLegalizer::SoftenFloatOp_STORE(SDNode *N, unsigned OpNo) {
759 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
760 assert(OpNo == 1 && "Can only soften the stored value!");
761 StoreSDNode *ST = cast<StoreSDNode>(N);
762 SDValue Val = ST->getValue();
765 if (ST->isTruncatingStore())
766 // Do an FP_ROUND followed by a non-truncating store.
767 Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, dl, ST->getMemoryVT(),
768 Val, DAG.getIntPtrConstant(0)));
770 Val = GetSoftenedFloat(Val);
772 return DAG.getStore(ST->getChain(), dl, Val, ST->getBasePtr(),
773 ST->getMemOperand());
777 //===----------------------------------------------------------------------===//
778 // Float Result Expansion
779 //===----------------------------------------------------------------------===//
781 /// ExpandFloatResult - This method is called when the specified result of the
782 /// specified node is found to need expansion. At this point, the node may also
783 /// have invalid operands or may have other results that need promotion, we just
784 /// know that (at least) one result needs expansion.
785 void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) {
786 DEBUG(dbgs() << "Expand float result: "; N->dump(&DAG); dbgs() << "\n");
790 // See if the target wants to custom expand this node.
791 if (CustomLowerNode(N, N->getValueType(ResNo), true))
794 switch (N->getOpcode()) {
797 dbgs() << "ExpandFloatResult #" << ResNo << ": ";
798 N->dump(&DAG); dbgs() << "\n";
800 llvm_unreachable("Do not know how to expand the result of this operator!");
802 case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break;
803 case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break;
804 case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break;
806 case ISD::MERGE_VALUES: ExpandRes_MERGE_VALUES(N, ResNo, Lo, Hi); break;
807 case ISD::BITCAST: ExpandRes_BITCAST(N, Lo, Hi); break;
808 case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break;
809 case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break;
810 case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break;
811 case ISD::VAARG: ExpandRes_VAARG(N, Lo, Hi); break;
813 case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break;
814 case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break;
815 case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break;
816 case ISD::FCEIL: ExpandFloatRes_FCEIL(N, Lo, Hi); break;
817 case ISD::FCOPYSIGN: ExpandFloatRes_FCOPYSIGN(N, Lo, Hi); break;
818 case ISD::FCOS: ExpandFloatRes_FCOS(N, Lo, Hi); break;
819 case ISD::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break;
820 case ISD::FEXP: ExpandFloatRes_FEXP(N, Lo, Hi); break;
821 case ISD::FEXP2: ExpandFloatRes_FEXP2(N, Lo, Hi); break;
822 case ISD::FFLOOR: ExpandFloatRes_FFLOOR(N, Lo, Hi); break;
823 case ISD::FLOG: ExpandFloatRes_FLOG(N, Lo, Hi); break;
824 case ISD::FLOG2: ExpandFloatRes_FLOG2(N, Lo, Hi); break;
825 case ISD::FLOG10: ExpandFloatRes_FLOG10(N, Lo, Hi); break;
826 case ISD::FMA: ExpandFloatRes_FMA(N, Lo, Hi); break;
827 case ISD::FMUL: ExpandFloatRes_FMUL(N, Lo, Hi); break;
828 case ISD::FNEARBYINT: ExpandFloatRes_FNEARBYINT(N, Lo, Hi); break;
829 case ISD::FNEG: ExpandFloatRes_FNEG(N, Lo, Hi); break;
830 case ISD::FP_EXTEND: ExpandFloatRes_FP_EXTEND(N, Lo, Hi); break;
831 case ISD::FPOW: ExpandFloatRes_FPOW(N, Lo, Hi); break;
832 case ISD::FPOWI: ExpandFloatRes_FPOWI(N, Lo, Hi); break;
833 case ISD::FRINT: ExpandFloatRes_FRINT(N, Lo, Hi); break;
834 case ISD::FROUND: ExpandFloatRes_FROUND(N, Lo, Hi); break;
835 case ISD::FSIN: ExpandFloatRes_FSIN(N, Lo, Hi); break;
836 case ISD::FSQRT: ExpandFloatRes_FSQRT(N, Lo, Hi); break;
837 case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break;
838 case ISD::FTRUNC: ExpandFloatRes_FTRUNC(N, Lo, Hi); break;
839 case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break;
840 case ISD::SINT_TO_FP:
841 case ISD::UINT_TO_FP: ExpandFloatRes_XINT_TO_FP(N, Lo, Hi); break;
842 case ISD::FREM: ExpandFloatRes_FREM(N, Lo, Hi); break;
845 // If Lo/Hi is null, the sub-method took care of registering results etc.
847 SetExpandedFloat(SDValue(N, ResNo), Lo, Hi);
850 void DAGTypeLegalizer::ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo,
852 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
853 assert(NVT.getSizeInBits() == integerPartWidth &&
854 "Do not know how to expand this float constant!");
855 APInt C = cast<ConstantFPSDNode>(N)->getValueAPF().bitcastToAPInt();
856 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
857 APInt(integerPartWidth, C.getRawData()[1])),
859 Hi = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
860 APInt(integerPartWidth, C.getRawData()[0])),
864 void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo,
866 assert(N->getValueType(0) == MVT::ppcf128 &&
867 "Logic only correct for ppcf128!");
870 GetExpandedFloat(N->getOperand(0), Lo, Tmp);
871 Hi = DAG.getNode(ISD::FABS, dl, Tmp.getValueType(), Tmp);
872 // Lo = Hi==fabs(Hi) ? Lo : -Lo;
873 Lo = DAG.getSelectCC(dl, Tmp, Hi, Lo,
874 DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo),
878 void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo,
880 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
881 RTLIB::ADD_F32, RTLIB::ADD_F64,
882 RTLIB::ADD_F80, RTLIB::ADD_F128,
885 GetPairElements(Call, Lo, Hi);
888 void DAGTypeLegalizer::ExpandFloatRes_FCEIL(SDNode *N,
889 SDValue &Lo, SDValue &Hi) {
890 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
891 RTLIB::CEIL_F32, RTLIB::CEIL_F64,
892 RTLIB::CEIL_F80, RTLIB::CEIL_F128,
893 RTLIB::CEIL_PPCF128),
895 GetPairElements(Call, Lo, Hi);
898 void DAGTypeLegalizer::ExpandFloatRes_FCOPYSIGN(SDNode *N,
899 SDValue &Lo, SDValue &Hi) {
900 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
904 RTLIB::COPYSIGN_F128,
905 RTLIB::COPYSIGN_PPCF128),
907 GetPairElements(Call, Lo, Hi);
910 void DAGTypeLegalizer::ExpandFloatRes_FCOS(SDNode *N,
911 SDValue &Lo, SDValue &Hi) {
912 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
913 RTLIB::COS_F32, RTLIB::COS_F64,
914 RTLIB::COS_F80, RTLIB::COS_F128,
917 GetPairElements(Call, Lo, Hi);
920 void DAGTypeLegalizer::ExpandFloatRes_FDIV(SDNode *N, SDValue &Lo,
922 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
923 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
929 N->getValueType(0), Ops, 2, false,
931 GetPairElements(Call, Lo, Hi);
934 void DAGTypeLegalizer::ExpandFloatRes_FEXP(SDNode *N,
935 SDValue &Lo, SDValue &Hi) {
936 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
937 RTLIB::EXP_F32, RTLIB::EXP_F64,
938 RTLIB::EXP_F80, RTLIB::EXP_F128,
941 GetPairElements(Call, Lo, Hi);
944 void DAGTypeLegalizer::ExpandFloatRes_FEXP2(SDNode *N,
945 SDValue &Lo, SDValue &Hi) {
946 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
947 RTLIB::EXP2_F32, RTLIB::EXP2_F64,
948 RTLIB::EXP2_F80, RTLIB::EXP2_F128,
949 RTLIB::EXP2_PPCF128),
951 GetPairElements(Call, Lo, Hi);
954 void DAGTypeLegalizer::ExpandFloatRes_FFLOOR(SDNode *N,
955 SDValue &Lo, SDValue &Hi) {
956 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
957 RTLIB::FLOOR_F32, RTLIB::FLOOR_F64,
958 RTLIB::FLOOR_F80, RTLIB::FLOOR_F128,
959 RTLIB::FLOOR_PPCF128),
961 GetPairElements(Call, Lo, Hi);
964 void DAGTypeLegalizer::ExpandFloatRes_FLOG(SDNode *N,
965 SDValue &Lo, SDValue &Hi) {
966 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
967 RTLIB::LOG_F32, RTLIB::LOG_F64,
968 RTLIB::LOG_F80, RTLIB::LOG_F128,
971 GetPairElements(Call, Lo, Hi);
974 void DAGTypeLegalizer::ExpandFloatRes_FLOG2(SDNode *N,
975 SDValue &Lo, SDValue &Hi) {
976 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
977 RTLIB::LOG2_F32, RTLIB::LOG2_F64,
978 RTLIB::LOG2_F80, RTLIB::LOG2_F128,
979 RTLIB::LOG2_PPCF128),
981 GetPairElements(Call, Lo, Hi);
984 void DAGTypeLegalizer::ExpandFloatRes_FLOG10(SDNode *N,
985 SDValue &Lo, SDValue &Hi) {
986 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
987 RTLIB::LOG10_F32, RTLIB::LOG10_F64,
988 RTLIB::LOG10_F80, RTLIB::LOG10_F128,
989 RTLIB::LOG10_PPCF128),
991 GetPairElements(Call, Lo, Hi);
994 void DAGTypeLegalizer::ExpandFloatRes_FMA(SDNode *N, SDValue &Lo,
996 SDValue Ops[3] = { N->getOperand(0), N->getOperand(1), N->getOperand(2) };
997 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
1002 RTLIB::FMA_PPCF128),
1003 N->getValueType(0), Ops, 3, false,
1005 GetPairElements(Call, Lo, Hi);
1008 void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDValue &Lo,
1010 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
1011 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
1016 RTLIB::MUL_PPCF128),
1017 N->getValueType(0), Ops, 2, false,
1019 GetPairElements(Call, Lo, Hi);
1022 void DAGTypeLegalizer::ExpandFloatRes_FNEARBYINT(SDNode *N,
1023 SDValue &Lo, SDValue &Hi) {
1024 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1025 RTLIB::NEARBYINT_F32,
1026 RTLIB::NEARBYINT_F64,
1027 RTLIB::NEARBYINT_F80,
1028 RTLIB::NEARBYINT_F128,
1029 RTLIB::NEARBYINT_PPCF128),
1031 GetPairElements(Call, Lo, Hi);
1034 void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDValue &Lo,
1037 GetExpandedFloat(N->getOperand(0), Lo, Hi);
1038 Lo = DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo);
1039 Hi = DAG.getNode(ISD::FNEG, dl, Hi.getValueType(), Hi);
1042 void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo,
1044 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
1045 Hi = DAG.getNode(ISD::FP_EXTEND, SDLoc(N), NVT, N->getOperand(0));
1046 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
1047 APInt(NVT.getSizeInBits(), 0)), NVT);
1050 void DAGTypeLegalizer::ExpandFloatRes_FPOW(SDNode *N,
1051 SDValue &Lo, SDValue &Hi) {
1052 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1053 RTLIB::POW_F32, RTLIB::POW_F64,
1054 RTLIB::POW_F80, RTLIB::POW_F128,
1055 RTLIB::POW_PPCF128),
1057 GetPairElements(Call, Lo, Hi);
1060 void DAGTypeLegalizer::ExpandFloatRes_FPOWI(SDNode *N,
1061 SDValue &Lo, SDValue &Hi) {
1062 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1063 RTLIB::POWI_F32, RTLIB::POWI_F64,
1064 RTLIB::POWI_F80, RTLIB::POWI_F128,
1065 RTLIB::POWI_PPCF128),
1067 GetPairElements(Call, Lo, Hi);
1070 void DAGTypeLegalizer::ExpandFloatRes_FREM(SDNode *N,
1071 SDValue &Lo, SDValue &Hi) {
1072 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1073 RTLIB::REM_F32, RTLIB::REM_F64,
1074 RTLIB::REM_F80, RTLIB::REM_F128,
1075 RTLIB::REM_PPCF128),
1077 GetPairElements(Call, Lo, Hi);
1080 void DAGTypeLegalizer::ExpandFloatRes_FRINT(SDNode *N,
1081 SDValue &Lo, SDValue &Hi) {
1082 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1083 RTLIB::RINT_F32, RTLIB::RINT_F64,
1084 RTLIB::RINT_F80, RTLIB::RINT_F128,
1085 RTLIB::RINT_PPCF128),
1087 GetPairElements(Call, Lo, Hi);
1090 void DAGTypeLegalizer::ExpandFloatRes_FROUND(SDNode *N,
1091 SDValue &Lo, SDValue &Hi) {
1092 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1097 RTLIB::ROUND_PPCF128),
1099 GetPairElements(Call, Lo, Hi);
1102 void DAGTypeLegalizer::ExpandFloatRes_FSIN(SDNode *N,
1103 SDValue &Lo, SDValue &Hi) {
1104 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1105 RTLIB::SIN_F32, RTLIB::SIN_F64,
1106 RTLIB::SIN_F80, RTLIB::SIN_F128,
1107 RTLIB::SIN_PPCF128),
1109 GetPairElements(Call, Lo, Hi);
1112 void DAGTypeLegalizer::ExpandFloatRes_FSQRT(SDNode *N,
1113 SDValue &Lo, SDValue &Hi) {
1114 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1115 RTLIB::SQRT_F32, RTLIB::SQRT_F64,
1116 RTLIB::SQRT_F80, RTLIB::SQRT_F128,
1117 RTLIB::SQRT_PPCF128),
1119 GetPairElements(Call, Lo, Hi);
1122 void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo,
1124 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
1125 SDValue Call = TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
1130 RTLIB::SUB_PPCF128),
1131 N->getValueType(0), Ops, 2, false,
1133 GetPairElements(Call, Lo, Hi);
1136 void DAGTypeLegalizer::ExpandFloatRes_FTRUNC(SDNode *N,
1137 SDValue &Lo, SDValue &Hi) {
1138 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1139 RTLIB::TRUNC_F32, RTLIB::TRUNC_F64,
1140 RTLIB::TRUNC_F80, RTLIB::TRUNC_F128,
1141 RTLIB::TRUNC_PPCF128),
1143 GetPairElements(Call, Lo, Hi);
1146 void DAGTypeLegalizer::ExpandFloatRes_LOAD(SDNode *N, SDValue &Lo,
1148 if (ISD::isNormalLoad(N)) {
1149 ExpandRes_NormalLoad(N, Lo, Hi);
1153 assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!");
1154 LoadSDNode *LD = cast<LoadSDNode>(N);
1155 SDValue Chain = LD->getChain();
1156 SDValue Ptr = LD->getBasePtr();
1159 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), LD->getValueType(0));
1160 assert(NVT.isByteSized() && "Expanded type not byte sized!");
1161 assert(LD->getMemoryVT().bitsLE(NVT) && "Float type not round?");
1163 Hi = DAG.getExtLoad(LD->getExtensionType(), dl, NVT, Chain, Ptr,
1164 LD->getMemoryVT(), LD->getMemOperand());
1166 // Remember the chain.
1167 Chain = Hi.getValue(1);
1169 // The low part is zero.
1170 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
1171 APInt(NVT.getSizeInBits(), 0)), NVT);
1173 // Modified the chain - switch anything that used the old chain to use the
1175 ReplaceValueWith(SDValue(LD, 1), Chain);
1178 void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo,
1180 assert(N->getValueType(0) == MVT::ppcf128 && "Unsupported XINT_TO_FP!");
1181 EVT VT = N->getValueType(0);
1182 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
1183 SDValue Src = N->getOperand(0);
1184 EVT SrcVT = Src.getValueType();
1185 bool isSigned = N->getOpcode() == ISD::SINT_TO_FP;
1188 // First do an SINT_TO_FP, whether the original was signed or unsigned.
1189 // When promoting partial word types to i32 we must honor the signedness,
1191 if (SrcVT.bitsLE(MVT::i32)) {
1192 // The integer can be represented exactly in an f64.
1193 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
1195 Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
1196 APInt(NVT.getSizeInBits(), 0)), NVT);
1197 Hi = DAG.getNode(ISD::SINT_TO_FP, dl, NVT, Src);
1199 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
1200 if (SrcVT.bitsLE(MVT::i64)) {
1201 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
1203 LC = RTLIB::SINTTOFP_I64_PPCF128;
1204 } else if (SrcVT.bitsLE(MVT::i128)) {
1205 Src = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i128, Src);
1206 LC = RTLIB::SINTTOFP_I128_PPCF128;
1208 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
1210 Hi = TLI.makeLibCall(DAG, LC, VT, &Src, 1, true, dl).first;
1211 GetPairElements(Hi, Lo, Hi);
1217 // Unsigned - fix up the SINT_TO_FP value just calculated.
1218 Hi = DAG.getNode(ISD::BUILD_PAIR, dl, VT, Lo, Hi);
1219 SrcVT = Src.getValueType();
1221 // x>=0 ? (ppcf128)(iN)x : (ppcf128)(iN)x + 2^N; N=32,64,128.
1222 static const uint64_t TwoE32[] = { 0x41f0000000000000LL, 0 };
1223 static const uint64_t TwoE64[] = { 0x43f0000000000000LL, 0 };
1224 static const uint64_t TwoE128[] = { 0x47f0000000000000LL, 0 };
1225 ArrayRef<uint64_t> Parts;
1227 switch (SrcVT.getSimpleVT().SimpleTy) {
1229 llvm_unreachable("Unsupported UINT_TO_FP!");
1241 Lo = DAG.getNode(ISD::FADD, dl, VT, Hi,
1242 DAG.getConstantFP(APFloat(APFloat::PPCDoubleDouble,
1245 Lo = DAG.getSelectCC(dl, Src, DAG.getConstant(0, SrcVT),
1246 Lo, Hi, ISD::SETLT);
1247 GetPairElements(Lo, Lo, Hi);
1251 //===----------------------------------------------------------------------===//
1252 // Float Operand Expansion
1253 //===----------------------------------------------------------------------===//
1255 /// ExpandFloatOperand - This method is called when the specified operand of the
1256 /// specified node is found to need expansion. At this point, all of the result
1257 /// types of the node are known to be legal, but other operands of the node may
1258 /// need promotion or expansion as well as the specified one.
1259 bool DAGTypeLegalizer::ExpandFloatOperand(SDNode *N, unsigned OpNo) {
1260 DEBUG(dbgs() << "Expand float operand: "; N->dump(&DAG); dbgs() << "\n");
1261 SDValue Res = SDValue();
1263 // See if the target wants to custom expand this node.
1264 if (CustomLowerNode(N, N->getOperand(OpNo).getValueType(), false))
1267 switch (N->getOpcode()) {
1270 dbgs() << "ExpandFloatOperand Op #" << OpNo << ": ";
1271 N->dump(&DAG); dbgs() << "\n";
1273 llvm_unreachable("Do not know how to expand this operator's operand!");
1275 case ISD::BITCAST: Res = ExpandOp_BITCAST(N); break;
1276 case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break;
1277 case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break;
1279 case ISD::BR_CC: Res = ExpandFloatOp_BR_CC(N); break;
1280 case ISD::FCOPYSIGN: Res = ExpandFloatOp_FCOPYSIGN(N); break;
1281 case ISD::FP_ROUND: Res = ExpandFloatOp_FP_ROUND(N); break;
1282 case ISD::FP_TO_SINT: Res = ExpandFloatOp_FP_TO_SINT(N); break;
1283 case ISD::FP_TO_UINT: Res = ExpandFloatOp_FP_TO_UINT(N); break;
1284 case ISD::SELECT_CC: Res = ExpandFloatOp_SELECT_CC(N); break;
1285 case ISD::SETCC: Res = ExpandFloatOp_SETCC(N); break;
1286 case ISD::STORE: Res = ExpandFloatOp_STORE(cast<StoreSDNode>(N),
1290 // If the result is null, the sub-method took care of registering results etc.
1291 if (!Res.getNode()) return false;
1293 // If the result is N, the sub-method updated N in place. Tell the legalizer
1295 if (Res.getNode() == N)
1298 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
1299 "Invalid operand expansion");
1301 ReplaceValueWith(SDValue(N, 0), Res);
1305 /// FloatExpandSetCCOperands - Expand the operands of a comparison. This code
1306 /// is shared among BR_CC, SELECT_CC, and SETCC handlers.
1307 void DAGTypeLegalizer::FloatExpandSetCCOperands(SDValue &NewLHS,
1309 ISD::CondCode &CCCode,
1311 SDValue LHSLo, LHSHi, RHSLo, RHSHi;
1312 GetExpandedFloat(NewLHS, LHSLo, LHSHi);
1313 GetExpandedFloat(NewRHS, RHSLo, RHSHi);
1315 assert(NewLHS.getValueType() == MVT::ppcf128 && "Unsupported setcc type!");
1317 // FIXME: This generated code sucks. We want to generate
1318 // FCMPU crN, hi1, hi2
1320 // FCMPU crN, lo1, lo2
1321 // The following can be improved, but not that much.
1322 SDValue Tmp1, Tmp2, Tmp3;
1323 Tmp1 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()),
1324 LHSHi, RHSHi, ISD::SETOEQ);
1325 Tmp2 = DAG.getSetCC(dl, getSetCCResultType(LHSLo.getValueType()),
1326 LHSLo, RHSLo, CCCode);
1327 Tmp3 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2);
1328 Tmp1 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()),
1329 LHSHi, RHSHi, ISD::SETUNE);
1330 Tmp2 = DAG.getSetCC(dl, getSetCCResultType(LHSHi.getValueType()),
1331 LHSHi, RHSHi, CCCode);
1332 Tmp1 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2);
1333 NewLHS = DAG.getNode(ISD::OR, dl, Tmp1.getValueType(), Tmp1, Tmp3);
1334 NewRHS = SDValue(); // LHS is the result, not a compare.
1337 SDValue DAGTypeLegalizer::ExpandFloatOp_BR_CC(SDNode *N) {
1338 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
1339 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
1340 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N));
1342 // If ExpandSetCCOperands returned a scalar, we need to compare the result
1343 // against zero to select between true and false values.
1344 if (!NewRHS.getNode()) {
1345 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
1346 CCCode = ISD::SETNE;
1349 // Update N to have the operands specified.
1350 return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0),
1351 DAG.getCondCode(CCCode), NewLHS, NewRHS,
1352 N->getOperand(4)), 0);
1355 SDValue DAGTypeLegalizer::ExpandFloatOp_FCOPYSIGN(SDNode *N) {
1356 assert(N->getOperand(1).getValueType() == MVT::ppcf128 &&
1357 "Logic only correct for ppcf128!");
1359 GetExpandedFloat(N->getOperand(1), Lo, Hi);
1360 // The ppcf128 value is providing only the sign; take it from the
1361 // higher-order double (which must have the larger magnitude).
1362 return DAG.getNode(ISD::FCOPYSIGN, SDLoc(N),
1363 N->getValueType(0), N->getOperand(0), Hi);
1366 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_ROUND(SDNode *N) {
1367 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1368 "Logic only correct for ppcf128!");
1370 GetExpandedFloat(N->getOperand(0), Lo, Hi);
1371 // Round it the rest of the way (e.g. to f32) if needed.
1372 return DAG.getNode(ISD::FP_ROUND, SDLoc(N),
1373 N->getValueType(0), Hi, N->getOperand(1));
1376 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) {
1377 EVT RVT = N->getValueType(0);
1380 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
1381 // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
1382 if (RVT == MVT::i32) {
1383 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1384 "Logic only correct for ppcf128!");
1385 SDValue Res = DAG.getNode(ISD::FP_ROUND_INREG, dl, MVT::ppcf128,
1386 N->getOperand(0), DAG.getValueType(MVT::f64));
1387 Res = DAG.getNode(ISD::FP_ROUND, dl, MVT::f64, Res,
1388 DAG.getIntPtrConstant(1));
1389 return DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, Res);
1392 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
1393 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
1394 return TLI.makeLibCall(DAG, LC, RVT, &N->getOperand(0), 1, false, dl).first;
1397 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) {
1398 EVT RVT = N->getValueType(0);
1401 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
1402 // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
1403 if (RVT == MVT::i32) {
1404 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1405 "Logic only correct for ppcf128!");
1406 const uint64_t TwoE31[] = {0x41e0000000000000LL, 0};
1407 APFloat APF = APFloat(APFloat::PPCDoubleDouble, APInt(128, TwoE31));
1408 SDValue Tmp = DAG.getConstantFP(APF, MVT::ppcf128);
1409 // X>=2^31 ? (int)(X-2^31)+0x80000000 : (int)X
1410 // FIXME: generated code sucks.
1411 return DAG.getSelectCC(dl, N->getOperand(0), Tmp,
1412 DAG.getNode(ISD::ADD, dl, MVT::i32,
1413 DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32,
1414 DAG.getNode(ISD::FSUB, dl,
1418 DAG.getConstant(0x80000000, MVT::i32)),
1419 DAG.getNode(ISD::FP_TO_SINT, dl,
1420 MVT::i32, N->getOperand(0)),
1424 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
1425 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
1426 return TLI.makeLibCall(DAG, LC, N->getValueType(0), &N->getOperand(0), 1,
1430 SDValue DAGTypeLegalizer::ExpandFloatOp_SELECT_CC(SDNode *N) {
1431 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
1432 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
1433 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N));
1435 // If ExpandSetCCOperands returned a scalar, we need to compare the result
1436 // against zero to select between true and false values.
1437 if (!NewRHS.getNode()) {
1438 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
1439 CCCode = ISD::SETNE;
1442 // Update N to have the operands specified.
1443 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS,
1444 N->getOperand(2), N->getOperand(3),
1445 DAG.getCondCode(CCCode)), 0);
1448 SDValue DAGTypeLegalizer::ExpandFloatOp_SETCC(SDNode *N) {
1449 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
1450 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
1451 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, SDLoc(N));
1453 // If ExpandSetCCOperands returned a scalar, use it.
1454 if (!NewRHS.getNode()) {
1455 assert(NewLHS.getValueType() == N->getValueType(0) &&
1456 "Unexpected setcc expansion!");
1460 // Otherwise, update N to have the operands specified.
1461 return SDValue(DAG.UpdateNodeOperands(N, NewLHS, NewRHS,
1462 DAG.getCondCode(CCCode)), 0);
1465 SDValue DAGTypeLegalizer::ExpandFloatOp_STORE(SDNode *N, unsigned OpNo) {
1466 if (ISD::isNormalStore(N))
1467 return ExpandOp_NormalStore(N, OpNo);
1469 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
1470 assert(OpNo == 1 && "Can only expand the stored value so far");
1471 StoreSDNode *ST = cast<StoreSDNode>(N);
1473 SDValue Chain = ST->getChain();
1474 SDValue Ptr = ST->getBasePtr();
1476 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(),
1477 ST->getValue().getValueType());
1478 assert(NVT.isByteSized() && "Expanded type not byte sized!");
1479 assert(ST->getMemoryVT().bitsLE(NVT) && "Float type not round?");
1483 GetExpandedOp(ST->getValue(), Lo, Hi);
1485 return DAG.getTruncStore(Chain, SDLoc(N), Hi, Ptr,
1486 ST->getMemoryVT(), ST->getMemOperand());