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"
25 /// GetFPLibCall - Return the right libcall for the given floating point type.
26 static RTLIB::Libcall GetFPLibCall(MVT VT,
27 RTLIB::Libcall Call_F32,
28 RTLIB::Libcall Call_F64,
29 RTLIB::Libcall Call_F80,
30 RTLIB::Libcall Call_PPCF128) {
32 VT == MVT::f32 ? Call_F32 :
33 VT == MVT::f64 ? Call_F64 :
34 VT == MVT::f80 ? Call_F80 :
35 VT == MVT::ppcf128 ? Call_PPCF128 :
36 RTLIB::UNKNOWN_LIBCALL;
39 //===----------------------------------------------------------------------===//
40 // Result Float to Integer Conversion.
41 //===----------------------------------------------------------------------===//
43 void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) {
44 DEBUG(cerr << "Soften float result " << ResNo << ": "; N->dump(&DAG);
46 SDValue R = SDValue();
48 switch (N->getOpcode()) {
51 cerr << "SoftenFloatResult #" << ResNo << ": ";
52 N->dump(&DAG); cerr << "\n";
54 assert(0 && "Do not know how to soften the result of this operator!");
57 case ISD::BIT_CONVERT: R = SoftenFloatRes_BIT_CONVERT(N); break;
58 case ISD::BUILD_PAIR: R = SoftenFloatRes_BUILD_PAIR(N); break;
60 R = SoftenFloatRes_ConstantFP(cast<ConstantFPSDNode>(N));
62 case ISD::FABS: R = SoftenFloatRes_FABS(N); break;
63 case ISD::FADD: R = SoftenFloatRes_FADD(N); break;
64 case ISD::FCEIL: R = SoftenFloatRes_FCEIL(N); break;
65 case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break;
66 case ISD::FCOS: R = SoftenFloatRes_FCOS(N); break;
67 case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break;
68 case ISD::FEXP: R = SoftenFloatRes_FEXP(N); break;
69 case ISD::FEXP2: R = SoftenFloatRes_FEXP2(N); break;
70 case ISD::FFLOOR: R = SoftenFloatRes_FFLOOR(N); break;
71 case ISD::FLOG: R = SoftenFloatRes_FLOG(N); break;
72 case ISD::FLOG2: R = SoftenFloatRes_FLOG2(N); break;
73 case ISD::FLOG10: R = SoftenFloatRes_FLOG10(N); break;
74 case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break;
75 case ISD::FNEARBYINT: R = SoftenFloatRes_FNEARBYINT(N); break;
76 case ISD::FNEG: R = SoftenFloatRes_FNEG(N); break;
77 case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break;
78 case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break;
79 case ISD::FPOW: R = SoftenFloatRes_FPOW(N); break;
80 case ISD::FPOWI: R = SoftenFloatRes_FPOWI(N); break;
81 case ISD::FRINT: R = SoftenFloatRes_FRINT(N); break;
82 case ISD::FSIN: R = SoftenFloatRes_FSIN(N); break;
83 case ISD::FSQRT: R = SoftenFloatRes_FSQRT(N); break;
84 case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break;
85 case ISD::FTRUNC: R = SoftenFloatRes_FTRUNC(N); break;
86 case ISD::LOAD: R = SoftenFloatRes_LOAD(N); break;
87 case ISD::SELECT: R = SoftenFloatRes_SELECT(N); break;
88 case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N); break;
90 case ISD::UINT_TO_FP: R = SoftenFloatRes_XINT_TO_FP(N); break;
93 // If R is null, the sub-method took care of registering the result.
95 SetSoftenedFloat(SDValue(N, ResNo), R);
98 SDValue DAGTypeLegalizer::SoftenFloatRes_BIT_CONVERT(SDNode *N) {
99 return BitConvertToInteger(N->getOperand(0));
102 SDValue DAGTypeLegalizer::SoftenFloatRes_BUILD_PAIR(SDNode *N) {
103 // Convert the inputs to integers, and build a new pair out of them.
104 return DAG.getNode(ISD::BUILD_PAIR,
105 TLI.getTypeToTransformTo(N->getValueType(0)),
106 BitConvertToInteger(N->getOperand(0)),
107 BitConvertToInteger(N->getOperand(1)));
110 SDValue DAGTypeLegalizer::SoftenFloatRes_ConstantFP(ConstantFPSDNode *N) {
111 return DAG.getConstant(N->getValueAPF().bitcastToAPInt(),
112 TLI.getTypeToTransformTo(N->getValueType(0)));
115 SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) {
116 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
117 unsigned Size = NVT.getSizeInBits();
119 // Mask = ~(1 << (Size-1))
120 SDValue Mask = DAG.getConstant(APInt::getAllOnesValue(Size).clear(Size-1),
122 SDValue Op = GetSoftenedFloat(N->getOperand(0));
123 return DAG.getNode(ISD::AND, NVT, Op, Mask);
126 SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) {
127 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
128 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
129 GetSoftenedFloat(N->getOperand(1)) };
130 return MakeLibCall(GetFPLibCall(N->getValueType(0),
138 SDValue DAGTypeLegalizer::SoftenFloatRes_FCEIL(SDNode *N) {
139 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
140 SDValue Op = GetSoftenedFloat(N->getOperand(0));
141 return MakeLibCall(GetFPLibCall(N->getValueType(0),
145 RTLIB::CEIL_PPCF128),
149 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) {
150 SDValue LHS = GetSoftenedFloat(N->getOperand(0));
151 SDValue RHS = BitConvertToInteger(N->getOperand(1));
153 MVT LVT = LHS.getValueType();
154 MVT RVT = RHS.getValueType();
156 unsigned LSize = LVT.getSizeInBits();
157 unsigned RSize = RVT.getSizeInBits();
159 // First get the sign bit of second operand.
160 SDValue SignBit = DAG.getNode(ISD::SHL, RVT, DAG.getConstant(1, RVT),
161 DAG.getConstant(RSize - 1,
162 TLI.getShiftAmountTy()));
163 SignBit = DAG.getNode(ISD::AND, RVT, RHS, SignBit);
165 // Shift right or sign-extend it if the two operands have different types.
166 int SizeDiff = RVT.getSizeInBits() - LVT.getSizeInBits();
168 SignBit = DAG.getNode(ISD::SRL, RVT, SignBit,
169 DAG.getConstant(SizeDiff, TLI.getShiftAmountTy()));
170 SignBit = DAG.getNode(ISD::TRUNCATE, LVT, SignBit);
171 } else if (SizeDiff < 0) {
172 SignBit = DAG.getNode(ISD::ANY_EXTEND, LVT, SignBit);
173 SignBit = DAG.getNode(ISD::SHL, LVT, SignBit,
174 DAG.getConstant(-SizeDiff, TLI.getShiftAmountTy()));
177 // Clear the sign bit of the first operand.
178 SDValue Mask = DAG.getNode(ISD::SHL, LVT, DAG.getConstant(1, LVT),
179 DAG.getConstant(LSize - 1,
180 TLI.getShiftAmountTy()));
181 Mask = DAG.getNode(ISD::SUB, LVT, Mask, DAG.getConstant(1, LVT));
182 LHS = DAG.getNode(ISD::AND, LVT, LHS, Mask);
184 // Or the value with the sign bit.
185 return DAG.getNode(ISD::OR, LVT, LHS, SignBit);
188 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) {
189 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
190 SDValue Op = GetSoftenedFloat(N->getOperand(0));
191 return MakeLibCall(GetFPLibCall(N->getValueType(0),
199 SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
200 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
201 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
202 GetSoftenedFloat(N->getOperand(1)) };
203 return MakeLibCall(GetFPLibCall(N->getValueType(0),
211 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) {
212 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
213 SDValue Op = GetSoftenedFloat(N->getOperand(0));
214 return MakeLibCall(GetFPLibCall(N->getValueType(0),
222 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) {
223 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
224 SDValue Op = GetSoftenedFloat(N->getOperand(0));
225 return MakeLibCall(GetFPLibCall(N->getValueType(0),
229 RTLIB::EXP2_PPCF128),
233 SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) {
234 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
235 SDValue Op = GetSoftenedFloat(N->getOperand(0));
236 return MakeLibCall(GetFPLibCall(N->getValueType(0),
240 RTLIB::FLOOR_PPCF128),
244 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) {
245 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
246 SDValue Op = GetSoftenedFloat(N->getOperand(0));
247 return MakeLibCall(GetFPLibCall(N->getValueType(0),
255 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) {
256 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
257 SDValue Op = GetSoftenedFloat(N->getOperand(0));
258 return MakeLibCall(GetFPLibCall(N->getValueType(0),
262 RTLIB::LOG2_PPCF128),
266 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) {
267 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
268 SDValue Op = GetSoftenedFloat(N->getOperand(0));
269 return MakeLibCall(GetFPLibCall(N->getValueType(0),
273 RTLIB::LOG10_PPCF128),
277 SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
278 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
279 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
280 GetSoftenedFloat(N->getOperand(1)) };
281 return MakeLibCall(GetFPLibCall(N->getValueType(0),
289 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) {
290 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
291 SDValue Op = GetSoftenedFloat(N->getOperand(0));
292 return MakeLibCall(GetFPLibCall(N->getValueType(0),
293 RTLIB::NEARBYINT_F32,
294 RTLIB::NEARBYINT_F64,
295 RTLIB::NEARBYINT_F80,
296 RTLIB::NEARBYINT_PPCF128),
300 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) {
301 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
302 // Expand Y = FNEG(X) -> Y = SUB -0.0, X
303 SDValue Ops[2] = { DAG.getConstantFP(-0.0, N->getValueType(0)),
304 GetSoftenedFloat(N->getOperand(0)) };
305 return MakeLibCall(GetFPLibCall(N->getValueType(0),
313 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
314 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
315 SDValue Op = N->getOperand(0);
316 RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0));
317 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
318 return MakeLibCall(LC, NVT, &Op, 1, false);
321 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) {
322 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
323 SDValue Op = N->getOperand(0);
324 RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0));
325 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!");
326 return MakeLibCall(LC, NVT, &Op, 1, false);
329 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) {
330 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
331 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
332 GetSoftenedFloat(N->getOperand(1)) };
333 return MakeLibCall(GetFPLibCall(N->getValueType(0),
341 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) {
342 assert(N->getOperand(1).getValueType() == MVT::i32 &&
343 "Unsupported power type!");
344 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
345 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) };
346 return MakeLibCall(GetFPLibCall(N->getValueType(0),
350 RTLIB::POWI_PPCF128),
354 SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) {
355 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
356 SDValue Op = GetSoftenedFloat(N->getOperand(0));
357 return MakeLibCall(GetFPLibCall(N->getValueType(0),
361 RTLIB::RINT_PPCF128),
365 SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) {
366 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
367 SDValue Op = GetSoftenedFloat(N->getOperand(0));
368 return MakeLibCall(GetFPLibCall(N->getValueType(0),
376 SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) {
377 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
378 SDValue Op = GetSoftenedFloat(N->getOperand(0));
379 return MakeLibCall(GetFPLibCall(N->getValueType(0),
383 RTLIB::SQRT_PPCF128),
387 SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
388 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
389 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
390 GetSoftenedFloat(N->getOperand(1)) };
391 return MakeLibCall(GetFPLibCall(N->getValueType(0),
399 SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) {
400 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
401 SDValue Op = GetSoftenedFloat(N->getOperand(0));
402 return MakeLibCall(GetFPLibCall(N->getValueType(0),
406 RTLIB::TRUNC_PPCF128),
410 SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) {
411 LoadSDNode *L = cast<LoadSDNode>(N);
412 MVT VT = N->getValueType(0);
413 MVT NVT = TLI.getTypeToTransformTo(VT);
416 if (L->getExtensionType() == ISD::NON_EXTLOAD) {
417 NewL = DAG.getLoad(L->getAddressingMode(), L->getExtensionType(),
418 NVT, L->getChain(), L->getBasePtr(), L->getOffset(),
419 L->getSrcValue(), L->getSrcValueOffset(), NVT,
420 L->isVolatile(), L->getAlignment());
421 // Legalized the chain result - switch anything that used the old chain to
423 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
427 // Do a non-extending load followed by FP_EXTEND.
428 NewL = DAG.getLoad(L->getAddressingMode(), ISD::NON_EXTLOAD,
429 L->getMemoryVT(), L->getChain(),
430 L->getBasePtr(), L->getOffset(),
431 L->getSrcValue(), L->getSrcValueOffset(),
433 L->isVolatile(), L->getAlignment());
434 // Legalized the chain result - switch anything that used the old chain to
436 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
437 return BitConvertToInteger(DAG.getNode(ISD::FP_EXTEND, VT, NewL));
440 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N) {
441 SDValue LHS = GetSoftenedFloat(N->getOperand(1));
442 SDValue RHS = GetSoftenedFloat(N->getOperand(2));
443 return DAG.getNode(ISD::SELECT, LHS.getValueType(), N->getOperand(0),LHS,RHS);
446 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT_CC(SDNode *N) {
447 SDValue LHS = GetSoftenedFloat(N->getOperand(2));
448 SDValue RHS = GetSoftenedFloat(N->getOperand(3));
449 return DAG.getNode(ISD::SELECT_CC, LHS.getValueType(), N->getOperand(0),
450 N->getOperand(1), LHS, RHS, N->getOperand(4));
453 SDValue DAGTypeLegalizer::SoftenFloatRes_XINT_TO_FP(SDNode *N) {
454 bool Signed = N->getOpcode() == ISD::SINT_TO_FP;
455 MVT SVT = N->getOperand(0).getValueType();
456 MVT RVT = N->getValueType(0);
459 // If the input is not legal, eg: i1 -> fp, then it needs to be promoted to
460 // a larger type, eg: i8 -> fp. Even if it is legal, no libcall may exactly
461 // match. Look for an appropriate libcall.
462 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
463 for (unsigned t = MVT::FIRST_INTEGER_VALUETYPE;
464 t <= MVT::LAST_INTEGER_VALUETYPE && LC == RTLIB::UNKNOWN_LIBCALL; ++t) {
465 NVT = (MVT::SimpleValueType)t;
466 // The source needs to big enough to hold the operand.
468 LC = Signed ? RTLIB::getSINTTOFP(NVT, RVT):RTLIB::getUINTTOFP (NVT, RVT);
470 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
472 // Sign/zero extend the argument if the libcall takes a larger type.
473 SDValue Op = DAG.getNode(Signed ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND,
474 NVT, N->getOperand(0));
475 return MakeLibCall(LC, TLI.getTypeToTransformTo(RVT), &Op, 1, false);
479 //===----------------------------------------------------------------------===//
480 // Operand Float to Integer Conversion..
481 //===----------------------------------------------------------------------===//
483 bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) {
484 DEBUG(cerr << "Soften float operand " << OpNo << ": "; N->dump(&DAG);
486 SDValue Res = SDValue();
488 switch (N->getOpcode()) {
491 cerr << "SoftenFloatOperand Op #" << OpNo << ": ";
492 N->dump(&DAG); cerr << "\n";
494 assert(0 && "Do not know how to soften this operator's operand!");
497 case ISD::BIT_CONVERT: Res = SoftenFloatOp_BIT_CONVERT(N); break;
498 case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break;
499 case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break;
500 case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break;
501 case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_UINT(N); break;
502 case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break;
503 case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break;
504 case ISD::STORE: Res = SoftenFloatOp_STORE(N, OpNo); break;
507 // If the result is null, the sub-method took care of registering results etc.
508 if (!Res.getNode()) return false;
510 // If the result is N, the sub-method updated N in place. Check to see if any
511 // operands are new, and if so, mark them.
512 if (Res.getNode() == N) {
513 // Mark N as new and remark N and its operands. This allows us to correctly
514 // revisit N if it needs another step of promotion and allows us to visit
515 // any new operands to N.
520 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
521 "Invalid operand expansion");
523 ReplaceValueWith(SDValue(N, 0), Res);
527 /// SoftenSetCCOperands - Soften the operands of a comparison. This code is
528 /// shared among BR_CC, SELECT_CC, and SETCC handlers.
529 void DAGTypeLegalizer::SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS,
530 ISD::CondCode &CCCode) {
531 SDValue LHSInt = GetSoftenedFloat(NewLHS);
532 SDValue RHSInt = GetSoftenedFloat(NewRHS);
533 MVT VT = NewLHS.getValueType();
535 assert((VT == MVT::f32 || VT == MVT::f64) && "Unsupported setcc type!");
537 // Expand into one or more soft-fp libcall(s).
538 RTLIB::Libcall LC1 = RTLIB::UNKNOWN_LIBCALL, LC2 = RTLIB::UNKNOWN_LIBCALL;
542 LC1 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : RTLIB::OEQ_F64;
546 LC1 = (VT == MVT::f32) ? RTLIB::UNE_F32 : RTLIB::UNE_F64;
550 LC1 = (VT == MVT::f32) ? RTLIB::OGE_F32 : RTLIB::OGE_F64;
554 LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
558 LC1 = (VT == MVT::f32) ? RTLIB::OLE_F32 : RTLIB::OLE_F64;
562 LC1 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64;
565 LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64;
568 LC1 = (VT == MVT::f32) ? RTLIB::O_F32 : RTLIB::O_F64;
571 LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64;
574 // SETONE = SETOLT | SETOGT
575 LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
578 LC2 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64;
581 LC2 = (VT == MVT::f32) ? RTLIB::OGE_F32 : RTLIB::OGE_F64;
584 LC2 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
587 LC2 = (VT == MVT::f32) ? RTLIB::OLE_F32 : RTLIB::OLE_F64;
590 LC2 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : RTLIB::OEQ_F64;
592 default: assert(false && "Do not know how to soften this setcc!");
596 MVT RetVT = MVT::i32; // FIXME: is this the correct return type?
597 SDValue Ops[2] = { LHSInt, RHSInt };
598 NewLHS = MakeLibCall(LC1, RetVT, Ops, 2, false/*sign irrelevant*/);
599 NewRHS = DAG.getConstant(0, RetVT);
600 CCCode = TLI.getCmpLibcallCC(LC1);
601 if (LC2 != RTLIB::UNKNOWN_LIBCALL) {
602 SDValue Tmp = DAG.getNode(ISD::SETCC, TLI.getSetCCResultType(NewLHS),
603 NewLHS, NewRHS, DAG.getCondCode(CCCode));
604 NewLHS = MakeLibCall(LC2, RetVT, Ops, 2, false/*sign irrelevant*/);
605 NewLHS = DAG.getNode(ISD::SETCC, TLI.getSetCCResultType(NewLHS), NewLHS,
606 NewRHS, DAG.getCondCode(TLI.getCmpLibcallCC(LC2)));
607 NewLHS = DAG.getNode(ISD::OR, Tmp.getValueType(), Tmp, NewLHS);
612 SDValue DAGTypeLegalizer::SoftenFloatOp_BIT_CONVERT(SDNode *N) {
613 return DAG.getNode(ISD::BIT_CONVERT, N->getValueType(0),
614 GetSoftenedFloat(N->getOperand(0)));
617 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) {
618 MVT SVT = N->getOperand(0).getValueType();
619 MVT RVT = N->getValueType(0);
621 RTLIB::Libcall LC = RTLIB::getFPROUND(SVT, RVT);
622 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND libcall");
624 SDValue Op = GetSoftenedFloat(N->getOperand(0));
625 return MakeLibCall(LC, RVT, &Op, 1, false);
628 SDValue DAGTypeLegalizer::SoftenFloatOp_BR_CC(SDNode *N) {
629 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
630 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
631 SoftenSetCCOperands(NewLHS, NewRHS, CCCode);
633 // If SoftenSetCCOperands returned a scalar, we need to compare the result
634 // against zero to select between true and false values.
635 if (NewRHS.getNode() == 0) {
636 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
640 // Update N to have the operands specified.
641 return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0),
642 DAG.getCondCode(CCCode), NewLHS, NewRHS,
646 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_SINT(SDNode *N) {
647 MVT RVT = N->getValueType(0);
648 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
649 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
650 SDValue Op = GetSoftenedFloat(N->getOperand(0));
651 return MakeLibCall(LC, RVT, &Op, 1, false);
654 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) {
655 MVT RVT = N->getValueType(0);
656 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
657 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
658 SDValue Op = GetSoftenedFloat(N->getOperand(0));
659 return MakeLibCall(LC, RVT, &Op, 1, false);
662 SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) {
663 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
664 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
665 SoftenSetCCOperands(NewLHS, NewRHS, CCCode);
667 // If SoftenSetCCOperands returned a scalar, we need to compare the result
668 // against zero to select between true and false values.
669 if (NewRHS.getNode() == 0) {
670 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
674 // Update N to have the operands specified.
675 return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
676 N->getOperand(2), N->getOperand(3),
677 DAG.getCondCode(CCCode));
680 SDValue DAGTypeLegalizer::SoftenFloatOp_SETCC(SDNode *N) {
681 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
682 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
683 SoftenSetCCOperands(NewLHS, NewRHS, CCCode);
685 // If SoftenSetCCOperands returned a scalar, use it.
686 if (NewRHS.getNode() == 0) {
687 assert(NewLHS.getValueType() == N->getValueType(0) &&
688 "Unexpected setcc expansion!");
692 // Otherwise, update N to have the operands specified.
693 return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
694 DAG.getCondCode(CCCode));
697 SDValue DAGTypeLegalizer::SoftenFloatOp_STORE(SDNode *N, unsigned OpNo) {
698 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
699 assert(OpNo == 1 && "Can only soften the stored value!");
700 StoreSDNode *ST = cast<StoreSDNode>(N);
701 SDValue Val = ST->getValue();
703 if (ST->isTruncatingStore())
704 // Do an FP_ROUND followed by a non-truncating store.
705 Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, ST->getMemoryVT(),
706 Val, DAG.getIntPtrConstant(0)));
708 Val = GetSoftenedFloat(Val);
710 return DAG.getStore(ST->getChain(), Val, ST->getBasePtr(),
711 ST->getSrcValue(), ST->getSrcValueOffset(),
712 ST->isVolatile(), ST->getAlignment());
716 //===----------------------------------------------------------------------===//
717 // Float Result Expansion
718 //===----------------------------------------------------------------------===//
720 /// ExpandFloatResult - This method is called when the specified result of the
721 /// specified node is found to need expansion. At this point, the node may also
722 /// have invalid operands or may have other results that need promotion, we just
723 /// know that (at least) one result needs expansion.
724 void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) {
725 DEBUG(cerr << "Expand float result: "; N->dump(&DAG); cerr << "\n");
729 // See if the target wants to custom expand this node.
730 if (CustomLowerResults(N, ResNo))
733 switch (N->getOpcode()) {
736 cerr << "ExpandFloatResult #" << ResNo << ": ";
737 N->dump(&DAG); cerr << "\n";
739 assert(0 && "Do not know how to expand the result of this operator!");
742 case ISD::MERGE_VALUES: SplitRes_MERGE_VALUES(N, Lo, Hi); break;
743 case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break;
744 case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break;
745 case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break;
747 case ISD::BIT_CONVERT: ExpandRes_BIT_CONVERT(N, Lo, Hi); break;
748 case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break;
749 case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break;
750 case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break;
751 case ISD::VAARG: ExpandRes_VAARG(N, Lo, Hi); break;
753 case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break;
754 case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break;
755 case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break;
756 case ISD::FCEIL: ExpandFloatRes_FCEIL(N, Lo, Hi); break;
757 case ISD::FCOS: ExpandFloatRes_FCOS(N, Lo, Hi); break;
758 case ISD::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break;
759 case ISD::FEXP: ExpandFloatRes_FEXP(N, Lo, Hi); break;
760 case ISD::FEXP2: ExpandFloatRes_FEXP2(N, Lo, Hi); break;
761 case ISD::FFLOOR: ExpandFloatRes_FFLOOR(N, Lo, Hi); break;
762 case ISD::FLOG: ExpandFloatRes_FLOG(N, Lo, Hi); break;
763 case ISD::FLOG2: ExpandFloatRes_FLOG2(N, Lo, Hi); break;
764 case ISD::FLOG10: ExpandFloatRes_FLOG10(N, Lo, Hi); break;
765 case ISD::FMUL: ExpandFloatRes_FMUL(N, Lo, Hi); break;
766 case ISD::FNEARBYINT: ExpandFloatRes_FNEARBYINT(N, Lo, Hi); break;
767 case ISD::FNEG: ExpandFloatRes_FNEG(N, Lo, Hi); break;
768 case ISD::FP_EXTEND: ExpandFloatRes_FP_EXTEND(N, Lo, Hi); break;
769 case ISD::FPOW: ExpandFloatRes_FPOW(N, Lo, Hi); break;
770 case ISD::FPOWI: ExpandFloatRes_FPOWI(N, Lo, Hi); break;
771 case ISD::FRINT: ExpandFloatRes_FRINT(N, Lo, Hi); break;
772 case ISD::FSIN: ExpandFloatRes_FSIN(N, Lo, Hi); break;
773 case ISD::FSQRT: ExpandFloatRes_FSQRT(N, Lo, Hi); break;
774 case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break;
775 case ISD::FTRUNC: ExpandFloatRes_FTRUNC(N, Lo, Hi); break;
776 case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break;
777 case ISD::SINT_TO_FP:
778 case ISD::UINT_TO_FP: ExpandFloatRes_XINT_TO_FP(N, Lo, Hi); break;
781 // If Lo/Hi is null, the sub-method took care of registering results etc.
783 SetExpandedFloat(SDValue(N, ResNo), Lo, Hi);
786 void DAGTypeLegalizer::ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo,
788 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
789 assert(NVT.getSizeInBits() == integerPartWidth &&
790 "Do not know how to expand this float constant!");
791 APInt C = cast<ConstantFPSDNode>(N)->getValueAPF().bitcastToAPInt();
792 Lo = DAG.getConstantFP(APFloat(APInt(integerPartWidth, 1,
793 &C.getRawData()[1])), NVT);
794 Hi = DAG.getConstantFP(APFloat(APInt(integerPartWidth, 1,
795 &C.getRawData()[0])), NVT);
798 void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo,
800 assert(N->getValueType(0) == MVT::ppcf128 &&
801 "Logic only correct for ppcf128!");
803 GetExpandedFloat(N->getOperand(0), Lo, Tmp);
804 Hi = DAG.getNode(ISD::FABS, Tmp.getValueType(), Tmp);
805 // Lo = Hi==fabs(Hi) ? Lo : -Lo;
806 Lo = DAG.getNode(ISD::SELECT_CC, Lo.getValueType(), Tmp, Hi, Lo,
807 DAG.getNode(ISD::FNEG, Lo.getValueType(), Lo),
808 DAG.getCondCode(ISD::SETEQ));
811 void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo,
813 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
814 RTLIB::ADD_F32, RTLIB::ADD_F64,
815 RTLIB::ADD_F80, RTLIB::ADD_PPCF128),
817 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
818 "Call lowered wrongly!");
819 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
822 void DAGTypeLegalizer::ExpandFloatRes_FCEIL(SDNode *N,
823 SDValue &Lo, SDValue &Hi) {
824 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
825 RTLIB::CEIL_F32, RTLIB::CEIL_F64,
826 RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128),
828 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
829 "Call lowered wrongly!");
830 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
833 void DAGTypeLegalizer::ExpandFloatRes_FCOS(SDNode *N,
834 SDValue &Lo, SDValue &Hi) {
835 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
836 RTLIB::COS_F32, RTLIB::COS_F64,
837 RTLIB::COS_F80, RTLIB::COS_PPCF128),
839 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
840 "Call lowered wrongly!");
841 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
844 void DAGTypeLegalizer::ExpandFloatRes_FDIV(SDNode *N, SDValue &Lo,
846 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
847 SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
852 N->getValueType(0), Ops, 2, false);
853 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
854 "Call lowered wrongly!");
855 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
858 void DAGTypeLegalizer::ExpandFloatRes_FEXP(SDNode *N,
859 SDValue &Lo, SDValue &Hi) {
860 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
861 RTLIB::EXP_F32, RTLIB::EXP_F64,
862 RTLIB::EXP_F80, RTLIB::EXP_PPCF128),
864 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
865 "Call lowered wrongly!");
866 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
869 void DAGTypeLegalizer::ExpandFloatRes_FEXP2(SDNode *N,
870 SDValue &Lo, SDValue &Hi) {
871 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
872 RTLIB::EXP2_F32, RTLIB::EXP2_F64,
873 RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128),
875 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
876 "Call lowered wrongly!");
877 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
880 void DAGTypeLegalizer::ExpandFloatRes_FFLOOR(SDNode *N,
881 SDValue &Lo, SDValue &Hi) {
882 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
883 RTLIB::FLOOR_F32,RTLIB::FLOOR_F64,
884 RTLIB::FLOOR_F80,RTLIB::FLOOR_PPCF128),
886 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
887 "Call lowered wrongly!");
888 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
891 void DAGTypeLegalizer::ExpandFloatRes_FLOG(SDNode *N,
892 SDValue &Lo, SDValue &Hi) {
893 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
894 RTLIB::LOG_F32, RTLIB::LOG_F64,
895 RTLIB::LOG_F80, RTLIB::LOG_PPCF128),
897 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
898 "Call lowered wrongly!");
899 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
902 void DAGTypeLegalizer::ExpandFloatRes_FLOG2(SDNode *N,
903 SDValue &Lo, SDValue &Hi) {
904 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
905 RTLIB::LOG2_F32, RTLIB::LOG2_F64,
906 RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128),
908 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
909 "Call lowered wrongly!");
910 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
913 void DAGTypeLegalizer::ExpandFloatRes_FLOG10(SDNode *N,
914 SDValue &Lo, SDValue &Hi) {
915 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
916 RTLIB::LOG10_F32,RTLIB::LOG10_F64,
917 RTLIB::LOG10_F80,RTLIB::LOG10_PPCF128),
919 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
920 "Call lowered wrongly!");
921 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
924 void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDValue &Lo,
926 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
927 SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
932 N->getValueType(0), Ops, 2, false);
933 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
934 "Call lowered wrongly!");
935 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
938 void DAGTypeLegalizer::ExpandFloatRes_FNEARBYINT(SDNode *N,
939 SDValue &Lo, SDValue &Hi) {
940 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
941 RTLIB::NEARBYINT_F32,
942 RTLIB::NEARBYINT_F64,
943 RTLIB::NEARBYINT_F80,
944 RTLIB::NEARBYINT_PPCF128),
946 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
947 "Call lowered wrongly!");
948 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
951 void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDValue &Lo,
953 GetExpandedFloat(N->getOperand(0), Lo, Hi);
954 Lo = DAG.getNode(ISD::FNEG, Lo.getValueType(), Lo);
955 Hi = DAG.getNode(ISD::FNEG, Hi.getValueType(), Hi);
958 void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo,
960 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
961 Hi = DAG.getNode(ISD::FP_EXTEND, NVT, N->getOperand(0));
962 Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
965 void DAGTypeLegalizer::ExpandFloatRes_FPOW(SDNode *N,
966 SDValue &Lo, SDValue &Hi) {
967 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
968 RTLIB::POW_F32, RTLIB::POW_F64,
969 RTLIB::POW_F80, RTLIB::POW_PPCF128),
971 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
972 "Call lowered wrongly!");
973 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
976 void DAGTypeLegalizer::ExpandFloatRes_FPOWI(SDNode *N,
977 SDValue &Lo, SDValue &Hi) {
978 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
979 RTLIB::POWI_F32, RTLIB::POWI_F64,
980 RTLIB::POWI_F80, RTLIB::POWI_PPCF128),
982 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
983 "Call lowered wrongly!");
984 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
987 void DAGTypeLegalizer::ExpandFloatRes_FRINT(SDNode *N,
988 SDValue &Lo, SDValue &Hi) {
989 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
990 RTLIB::RINT_F32, RTLIB::RINT_F64,
991 RTLIB::RINT_F80, RTLIB::RINT_PPCF128),
993 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
994 "Call lowered wrongly!");
995 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
998 void DAGTypeLegalizer::ExpandFloatRes_FSIN(SDNode *N,
999 SDValue &Lo, SDValue &Hi) {
1000 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1001 RTLIB::SIN_F32, RTLIB::SIN_F64,
1002 RTLIB::SIN_F80, RTLIB::SIN_PPCF128),
1004 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
1005 "Call lowered wrongly!");
1006 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
1009 void DAGTypeLegalizer::ExpandFloatRes_FSQRT(SDNode *N,
1010 SDValue &Lo, SDValue &Hi) {
1011 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1012 RTLIB::SQRT_F32, RTLIB::SQRT_F64,
1013 RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128),
1015 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
1016 "Call lowered wrongly!");
1017 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
1020 void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo,
1022 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
1023 SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
1027 RTLIB::SUB_PPCF128),
1028 N->getValueType(0), Ops, 2, false);
1029 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
1030 "Call lowered wrongly!");
1031 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
1034 void DAGTypeLegalizer::ExpandFloatRes_FTRUNC(SDNode *N,
1035 SDValue &Lo, SDValue &Hi) {
1036 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1037 RTLIB::TRUNC_F32, RTLIB::TRUNC_F64,
1038 RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128),
1040 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
1041 "Call lowered wrongly!");
1042 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
1045 void DAGTypeLegalizer::ExpandFloatRes_LOAD(SDNode *N, SDValue &Lo,
1047 if (ISD::isNormalLoad(N)) {
1048 ExpandRes_NormalLoad(N, Lo, Hi);
1052 assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!");
1053 LoadSDNode *LD = cast<LoadSDNode>(N);
1054 SDValue Chain = LD->getChain();
1055 SDValue Ptr = LD->getBasePtr();
1057 MVT NVT = TLI.getTypeToTransformTo(LD->getValueType(0));
1058 assert(NVT.isByteSized() && "Expanded type not byte sized!");
1059 assert(LD->getMemoryVT().bitsLE(NVT) && "Float type not round?");
1061 Hi = DAG.getExtLoad(LD->getExtensionType(), NVT, Chain, Ptr,
1062 LD->getSrcValue(), LD->getSrcValueOffset(),
1064 LD->isVolatile(), LD->getAlignment());
1066 // Remember the chain.
1067 Chain = Hi.getValue(1);
1069 // The low part is zero.
1070 Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
1072 // Modified the chain - switch anything that used the old chain to use the
1074 ReplaceValueWith(SDValue(LD, 1), Chain);
1077 void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo,
1079 assert(N->getValueType(0) == MVT::ppcf128 && "Unsupported XINT_TO_FP!");
1080 MVT VT = N->getValueType(0);
1081 MVT NVT = TLI.getTypeToTransformTo(VT);
1082 SDValue Src = N->getOperand(0);
1083 MVT SrcVT = Src.getValueType();
1084 bool isSigned = N->getOpcode() == ISD::SINT_TO_FP;
1086 // First do an SINT_TO_FP, whether the original was signed or unsigned.
1087 // When promoting partial word types to i32 we must honor the signedness,
1089 if (SrcVT.bitsLE(MVT::i32)) {
1090 // The integer can be represented exactly in an f64.
1091 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND,
1093 Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
1094 Hi = DAG.getNode(ISD::SINT_TO_FP, NVT, Src);
1096 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
1097 if (SrcVT.bitsLE(MVT::i64)) {
1098 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND,
1100 LC = RTLIB::SINTTOFP_I64_PPCF128;
1101 } else if (SrcVT.bitsLE(MVT::i128)) {
1102 Src = DAG.getNode(ISD::SIGN_EXTEND, MVT::i128, Src);
1103 LC = RTLIB::SINTTOFP_I128_PPCF128;
1105 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
1107 Hi = MakeLibCall(LC, VT, &Src, 1, true);
1108 assert(Hi.getNode()->getOpcode() == ISD::BUILD_PAIR &&
1109 "Call lowered wrongly!");
1110 Lo = Hi.getOperand(0); Hi = Hi.getOperand(1);
1116 // Unsigned - fix up the SINT_TO_FP value just calculated.
1117 Hi = DAG.getNode(ISD::BUILD_PAIR, VT, Lo, Hi);
1118 SrcVT = Src.getValueType();
1120 // x>=0 ? (ppcf128)(iN)x : (ppcf128)(iN)x + 2^N; N=32,64,128.
1121 static const uint64_t TwoE32[] = { 0x41f0000000000000LL, 0 };
1122 static const uint64_t TwoE64[] = { 0x43f0000000000000LL, 0 };
1123 static const uint64_t TwoE128[] = { 0x47f0000000000000LL, 0 };
1124 const uint64_t *Parts = 0;
1126 switch (SrcVT.getSimpleVT()) {
1128 assert(false && "Unsupported UINT_TO_FP!");
1140 Lo = DAG.getNode(ISD::FADD, VT, Hi,
1141 DAG.getConstantFP(APFloat(APInt(128, 2, Parts)),
1143 Lo = DAG.getNode(ISD::SELECT_CC, VT, Src, DAG.getConstant(0, SrcVT), Lo, Hi,
1144 DAG.getCondCode(ISD::SETLT));
1145 Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, NVT, Lo, DAG.getIntPtrConstant(1));
1146 Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, NVT, Lo, DAG.getIntPtrConstant(0));
1150 //===----------------------------------------------------------------------===//
1151 // Float Operand Expansion
1152 //===----------------------------------------------------------------------===//
1154 /// ExpandFloatOperand - This method is called when the specified operand of the
1155 /// specified node is found to need expansion. At this point, all of the result
1156 /// types of the node are known to be legal, but other operands of the node may
1157 /// need promotion or expansion as well as the specified one.
1158 bool DAGTypeLegalizer::ExpandFloatOperand(SDNode *N, unsigned OpNo) {
1159 DEBUG(cerr << "Expand float operand: "; N->dump(&DAG); cerr << "\n");
1160 SDValue Res = SDValue();
1162 if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType())
1163 == TargetLowering::Custom)
1164 Res = TLI.LowerOperation(SDValue(N, 0), DAG);
1166 if (Res.getNode() == 0) {
1167 switch (N->getOpcode()) {
1170 cerr << "ExpandFloatOperand Op #" << OpNo << ": ";
1171 N->dump(&DAG); cerr << "\n";
1173 assert(0 && "Do not know how to expand this operator's operand!");
1176 case ISD::BIT_CONVERT: Res = ExpandOp_BIT_CONVERT(N); break;
1177 case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break;
1178 case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break;
1180 case ISD::BR_CC: Res = ExpandFloatOp_BR_CC(N); break;
1181 case ISD::FP_ROUND: Res = ExpandFloatOp_FP_ROUND(N); break;
1182 case ISD::FP_TO_SINT: Res = ExpandFloatOp_FP_TO_SINT(N); break;
1183 case ISD::FP_TO_UINT: Res = ExpandFloatOp_FP_TO_UINT(N); break;
1184 case ISD::SELECT_CC: Res = ExpandFloatOp_SELECT_CC(N); break;
1185 case ISD::SETCC: Res = ExpandFloatOp_SETCC(N); break;
1186 case ISD::STORE: Res = ExpandFloatOp_STORE(cast<StoreSDNode>(N),
1191 // If the result is null, the sub-method took care of registering results etc.
1192 if (!Res.getNode()) return false;
1193 // If the result is N, the sub-method updated N in place. Check to see if any
1194 // operands are new, and if so, mark them.
1195 if (Res.getNode() == N) {
1196 // Mark N as new and remark N and its operands. This allows us to correctly
1197 // revisit N if it needs another step of expansion and allows us to visit
1198 // any new operands to N.
1203 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
1204 "Invalid operand expansion");
1206 ReplaceValueWith(SDValue(N, 0), Res);
1210 /// FloatExpandSetCCOperands - Expand the operands of a comparison. This code
1211 /// is shared among BR_CC, SELECT_CC, and SETCC handlers.
1212 void DAGTypeLegalizer::FloatExpandSetCCOperands(SDValue &NewLHS,
1214 ISD::CondCode &CCCode) {
1215 SDValue LHSLo, LHSHi, RHSLo, RHSHi;
1216 GetExpandedFloat(NewLHS, LHSLo, LHSHi);
1217 GetExpandedFloat(NewRHS, RHSLo, RHSHi);
1219 MVT VT = NewLHS.getValueType();
1220 assert(VT == MVT::ppcf128 && "Unsupported setcc type!");
1222 // FIXME: This generated code sucks. We want to generate
1223 // FCMPU crN, hi1, hi2
1225 // FCMPU crN, lo1, lo2
1226 // The following can be improved, but not that much.
1227 SDValue Tmp1, Tmp2, Tmp3;
1228 Tmp1 = DAG.getSetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, ISD::SETOEQ);
1229 Tmp2 = DAG.getSetCC(TLI.getSetCCResultType(LHSLo), LHSLo, RHSLo, CCCode);
1230 Tmp3 = DAG.getNode(ISD::AND, Tmp1.getValueType(), Tmp1, Tmp2);
1231 Tmp1 = DAG.getSetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, ISD::SETUNE);
1232 Tmp2 = DAG.getSetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, CCCode);
1233 Tmp1 = DAG.getNode(ISD::AND, Tmp1.getValueType(), Tmp1, Tmp2);
1234 NewLHS = DAG.getNode(ISD::OR, Tmp1.getValueType(), Tmp1, Tmp3);
1235 NewRHS = SDValue(); // LHS is the result, not a compare.
1238 SDValue DAGTypeLegalizer::ExpandFloatOp_BR_CC(SDNode *N) {
1239 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
1240 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
1241 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode);
1243 // If ExpandSetCCOperands returned a scalar, we need to compare the result
1244 // against zero to select between true and false values.
1245 if (NewRHS.getNode() == 0) {
1246 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
1247 CCCode = ISD::SETNE;
1250 // Update N to have the operands specified.
1251 return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0),
1252 DAG.getCondCode(CCCode), NewLHS, NewRHS,
1256 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_ROUND(SDNode *N) {
1257 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1258 "Logic only correct for ppcf128!");
1260 GetExpandedFloat(N->getOperand(0), Lo, Hi);
1261 // Round it the rest of the way (e.g. to f32) if needed.
1262 return DAG.getNode(ISD::FP_ROUND, N->getValueType(0), Hi, N->getOperand(1));
1265 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) {
1266 MVT RVT = N->getValueType(0);
1268 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
1269 // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
1270 if (RVT == MVT::i32) {
1271 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1272 "Logic only correct for ppcf128!");
1273 SDValue Res = DAG.getNode(ISD::FP_ROUND_INREG, MVT::ppcf128,
1274 N->getOperand(0), DAG.getValueType(MVT::f64));
1275 Res = DAG.getNode(ISD::FP_ROUND, MVT::f64, Res, DAG.getIntPtrConstant(1));
1276 return DAG.getNode(ISD::FP_TO_SINT, MVT::i32, Res);
1279 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
1280 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
1281 return MakeLibCall(LC, RVT, &N->getOperand(0), 1, false);
1284 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) {
1285 MVT RVT = N->getValueType(0);
1287 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
1288 // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
1289 if (RVT == MVT::i32) {
1290 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1291 "Logic only correct for ppcf128!");
1292 const uint64_t TwoE31[] = {0x41e0000000000000LL, 0};
1293 APFloat APF = APFloat(APInt(128, 2, TwoE31));
1294 SDValue Tmp = DAG.getConstantFP(APF, MVT::ppcf128);
1295 // X>=2^31 ? (int)(X-2^31)+0x80000000 : (int)X
1296 // FIXME: generated code sucks.
1297 return DAG.getNode(ISD::SELECT_CC, MVT::i32, N->getOperand(0), Tmp,
1298 DAG.getNode(ISD::ADD, MVT::i32,
1299 DAG.getNode(ISD::FP_TO_SINT, MVT::i32,
1300 DAG.getNode(ISD::FSUB,
1304 DAG.getConstant(0x80000000, MVT::i32)),
1305 DAG.getNode(ISD::FP_TO_SINT, MVT::i32, N->getOperand(0)),
1306 DAG.getCondCode(ISD::SETGE));
1309 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
1310 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
1311 return MakeLibCall(LC, N->getValueType(0), &N->getOperand(0), 1, false);
1314 SDValue DAGTypeLegalizer::ExpandFloatOp_SELECT_CC(SDNode *N) {
1315 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
1316 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
1317 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode);
1319 // If ExpandSetCCOperands returned a scalar, we need to compare the result
1320 // against zero to select between true and false values.
1321 if (NewRHS.getNode() == 0) {
1322 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
1323 CCCode = ISD::SETNE;
1326 // Update N to have the operands specified.
1327 return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
1328 N->getOperand(2), N->getOperand(3),
1329 DAG.getCondCode(CCCode));
1332 SDValue DAGTypeLegalizer::ExpandFloatOp_SETCC(SDNode *N) {
1333 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
1334 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
1335 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode);
1337 // If ExpandSetCCOperands returned a scalar, use it.
1338 if (NewRHS.getNode() == 0) {
1339 assert(NewLHS.getValueType() == N->getValueType(0) &&
1340 "Unexpected setcc expansion!");
1344 // Otherwise, update N to have the operands specified.
1345 return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
1346 DAG.getCondCode(CCCode));
1349 SDValue DAGTypeLegalizer::ExpandFloatOp_STORE(SDNode *N, unsigned OpNo) {
1350 if (ISD::isNormalStore(N))
1351 return ExpandOp_NormalStore(N, OpNo);
1353 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
1354 assert(OpNo == 1 && "Can only expand the stored value so far");
1355 StoreSDNode *ST = cast<StoreSDNode>(N);
1357 SDValue Chain = ST->getChain();
1358 SDValue Ptr = ST->getBasePtr();
1360 MVT NVT = TLI.getTypeToTransformTo(ST->getValue().getValueType());
1361 assert(NVT.isByteSized() && "Expanded type not byte sized!");
1362 assert(ST->getMemoryVT().bitsLE(NVT) && "Float type not round?");
1365 GetExpandedOp(ST->getValue(), Lo, Hi);
1367 return DAG.getTruncStore(Chain, Hi, Ptr,
1368 ST->getSrcValue(), ST->getSrcValueOffset(),
1370 ST->isVolatile(), ST->getAlignment());