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, N->getDebugLoc(),
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, N->getDebugLoc(), 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),
135 NVT, Ops, 2, false, N->getDebugLoc());
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),
146 NVT, &Op, 1, false, N->getDebugLoc());
149 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) {
150 SDValue LHS = GetSoftenedFloat(N->getOperand(0));
151 SDValue RHS = BitConvertToInteger(N->getOperand(1));
152 DebugLoc dl = N->getDebugLoc();
154 MVT LVT = LHS.getValueType();
155 MVT RVT = RHS.getValueType();
157 unsigned LSize = LVT.getSizeInBits();
158 unsigned RSize = RVT.getSizeInBits();
160 // First get the sign bit of second operand.
161 SDValue SignBit = DAG.getNode(ISD::SHL, dl, RVT, DAG.getConstant(1, RVT),
162 DAG.getConstant(RSize - 1,
163 TLI.getShiftAmountTy()));
164 SignBit = DAG.getNode(ISD::AND, dl, RVT, RHS, SignBit);
166 // Shift right or sign-extend it if the two operands have different types.
167 int SizeDiff = RVT.getSizeInBits() - LVT.getSizeInBits();
169 SignBit = DAG.getNode(ISD::SRL, dl, RVT, SignBit,
170 DAG.getConstant(SizeDiff, TLI.getShiftAmountTy()));
171 SignBit = DAG.getNode(ISD::TRUNCATE, dl, LVT, SignBit);
172 } else if (SizeDiff < 0) {
173 SignBit = DAG.getNode(ISD::ANY_EXTEND, dl, LVT, SignBit);
174 SignBit = DAG.getNode(ISD::SHL, dl, LVT, SignBit,
175 DAG.getConstant(-SizeDiff, TLI.getShiftAmountTy()));
178 // Clear the sign bit of the first operand.
179 SDValue Mask = DAG.getNode(ISD::SHL, dl, LVT, DAG.getConstant(1, LVT),
180 DAG.getConstant(LSize - 1,
181 TLI.getShiftAmountTy()));
182 Mask = DAG.getNode(ISD::SUB, dl, LVT, Mask, DAG.getConstant(1, LVT));
183 LHS = DAG.getNode(ISD::AND, dl, LVT, LHS, Mask);
185 // Or the value with the sign bit.
186 return DAG.getNode(ISD::OR, dl, LVT, LHS, SignBit);
189 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) {
190 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
191 SDValue Op = GetSoftenedFloat(N->getOperand(0));
192 return MakeLibCall(GetFPLibCall(N->getValueType(0),
197 NVT, &Op, 1, false, N->getDebugLoc());
200 SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
201 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
202 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
203 GetSoftenedFloat(N->getOperand(1)) };
204 return MakeLibCall(GetFPLibCall(N->getValueType(0),
209 NVT, Ops, 2, false, N->getDebugLoc());
212 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) {
213 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
214 SDValue Op = GetSoftenedFloat(N->getOperand(0));
215 return MakeLibCall(GetFPLibCall(N->getValueType(0),
220 NVT, &Op, 1, false, N->getDebugLoc());
223 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) {
224 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
225 SDValue Op = GetSoftenedFloat(N->getOperand(0));
226 return MakeLibCall(GetFPLibCall(N->getValueType(0),
230 RTLIB::EXP2_PPCF128),
231 NVT, &Op, 1, false, N->getDebugLoc());
234 SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) {
235 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
236 SDValue Op = GetSoftenedFloat(N->getOperand(0));
237 return MakeLibCall(GetFPLibCall(N->getValueType(0),
241 RTLIB::FLOOR_PPCF128),
242 NVT, &Op, 1, false, N->getDebugLoc());
245 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) {
246 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
247 SDValue Op = GetSoftenedFloat(N->getOperand(0));
248 return MakeLibCall(GetFPLibCall(N->getValueType(0),
253 NVT, &Op, 1, false, N->getDebugLoc());
256 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) {
257 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
258 SDValue Op = GetSoftenedFloat(N->getOperand(0));
259 return MakeLibCall(GetFPLibCall(N->getValueType(0),
263 RTLIB::LOG2_PPCF128),
264 NVT, &Op, 1, false, N->getDebugLoc());
267 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) {
268 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
269 SDValue Op = GetSoftenedFloat(N->getOperand(0));
270 return MakeLibCall(GetFPLibCall(N->getValueType(0),
274 RTLIB::LOG10_PPCF128),
275 NVT, &Op, 1, false, N->getDebugLoc());
278 SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
279 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
280 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
281 GetSoftenedFloat(N->getOperand(1)) };
282 return MakeLibCall(GetFPLibCall(N->getValueType(0),
287 NVT, Ops, 2, false, N->getDebugLoc());
290 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) {
291 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
292 SDValue Op = GetSoftenedFloat(N->getOperand(0));
293 return MakeLibCall(GetFPLibCall(N->getValueType(0),
294 RTLIB::NEARBYINT_F32,
295 RTLIB::NEARBYINT_F64,
296 RTLIB::NEARBYINT_F80,
297 RTLIB::NEARBYINT_PPCF128),
298 NVT, &Op, 1, false, N->getDebugLoc());
301 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) {
302 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
303 // Expand Y = FNEG(X) -> Y = SUB -0.0, X
304 SDValue Ops[2] = { DAG.getConstantFP(-0.0, N->getValueType(0)),
305 GetSoftenedFloat(N->getOperand(0)) };
306 return MakeLibCall(GetFPLibCall(N->getValueType(0),
311 NVT, Ops, 2, false, N->getDebugLoc());
314 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
315 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
316 SDValue Op = N->getOperand(0);
317 RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0));
318 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
319 return MakeLibCall(LC, NVT, &Op, 1, false, N->getDebugLoc());
322 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) {
323 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
324 SDValue Op = N->getOperand(0);
325 RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0));
326 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!");
327 return MakeLibCall(LC, NVT, &Op, 1, false, N->getDebugLoc());
330 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) {
331 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
332 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
333 GetSoftenedFloat(N->getOperand(1)) };
334 return MakeLibCall(GetFPLibCall(N->getValueType(0),
339 NVT, Ops, 2, false, N->getDebugLoc());
342 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) {
343 assert(N->getOperand(1).getValueType() == MVT::i32 &&
344 "Unsupported power type!");
345 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
346 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) };
347 return MakeLibCall(GetFPLibCall(N->getValueType(0),
351 RTLIB::POWI_PPCF128),
352 NVT, Ops, 2, false, N->getDebugLoc());
355 SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) {
356 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
357 SDValue Op = GetSoftenedFloat(N->getOperand(0));
358 return MakeLibCall(GetFPLibCall(N->getValueType(0),
362 RTLIB::RINT_PPCF128),
363 NVT, &Op, 1, false, N->getDebugLoc());
366 SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) {
367 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
368 SDValue Op = GetSoftenedFloat(N->getOperand(0));
369 return MakeLibCall(GetFPLibCall(N->getValueType(0),
374 NVT, &Op, 1, false, N->getDebugLoc());
377 SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) {
378 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
379 SDValue Op = GetSoftenedFloat(N->getOperand(0));
380 return MakeLibCall(GetFPLibCall(N->getValueType(0),
384 RTLIB::SQRT_PPCF128),
385 NVT, &Op, 1, false, N->getDebugLoc());
388 SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
389 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
390 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
391 GetSoftenedFloat(N->getOperand(1)) };
392 return MakeLibCall(GetFPLibCall(N->getValueType(0),
397 NVT, Ops, 2, false, N->getDebugLoc());
400 SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) {
401 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
402 SDValue Op = GetSoftenedFloat(N->getOperand(0));
403 return MakeLibCall(GetFPLibCall(N->getValueType(0),
407 RTLIB::TRUNC_PPCF128),
408 NVT, &Op, 1, false, N->getDebugLoc());
411 SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) {
412 LoadSDNode *L = cast<LoadSDNode>(N);
413 MVT VT = N->getValueType(0);
414 MVT NVT = TLI.getTypeToTransformTo(VT);
415 DebugLoc dl = N->getDebugLoc();
418 if (L->getExtensionType() == ISD::NON_EXTLOAD) {
419 NewL = DAG.getLoad(L->getAddressingMode(), dl, L->getExtensionType(),
420 NVT, L->getChain(), L->getBasePtr(), L->getOffset(),
421 L->getSrcValue(), L->getSrcValueOffset(), NVT,
422 L->isVolatile(), L->getAlignment());
423 // Legalized the chain result - switch anything that used the old chain to
425 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
429 // Do a non-extending load followed by FP_EXTEND.
430 NewL = DAG.getLoad(L->getAddressingMode(), dl, ISD::NON_EXTLOAD,
431 L->getMemoryVT(), L->getChain(),
432 L->getBasePtr(), L->getOffset(),
433 L->getSrcValue(), L->getSrcValueOffset(),
435 L->isVolatile(), L->getAlignment());
436 // Legalized the chain result - switch anything that used the old chain to
438 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
439 return BitConvertToInteger(DAG.getNode(ISD::FP_EXTEND, dl, VT, NewL));
442 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N) {
443 SDValue LHS = GetSoftenedFloat(N->getOperand(1));
444 SDValue RHS = GetSoftenedFloat(N->getOperand(2));
445 return DAG.getNode(ISD::SELECT, N->getDebugLoc(),
446 LHS.getValueType(), N->getOperand(0),LHS,RHS);
449 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT_CC(SDNode *N) {
450 SDValue LHS = GetSoftenedFloat(N->getOperand(2));
451 SDValue RHS = GetSoftenedFloat(N->getOperand(3));
452 return DAG.getNode(ISD::SELECT_CC, N->getDebugLoc(),
453 LHS.getValueType(), N->getOperand(0),
454 N->getOperand(1), LHS, RHS, N->getOperand(4));
457 SDValue DAGTypeLegalizer::SoftenFloatRes_XINT_TO_FP(SDNode *N) {
458 bool Signed = N->getOpcode() == ISD::SINT_TO_FP;
459 MVT SVT = N->getOperand(0).getValueType();
460 MVT RVT = N->getValueType(0);
462 DebugLoc dl = N->getDebugLoc();
464 // If the input is not legal, eg: i1 -> fp, then it needs to be promoted to
465 // a larger type, eg: i8 -> fp. Even if it is legal, no libcall may exactly
466 // match. Look for an appropriate libcall.
467 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
468 for (unsigned t = MVT::FIRST_INTEGER_VALUETYPE;
469 t <= MVT::LAST_INTEGER_VALUETYPE && LC == RTLIB::UNKNOWN_LIBCALL; ++t) {
470 NVT = (MVT::SimpleValueType)t;
471 // The source needs to big enough to hold the operand.
473 LC = Signed ? RTLIB::getSINTTOFP(NVT, RVT):RTLIB::getUINTTOFP (NVT, RVT);
475 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
477 // Sign/zero extend the argument if the libcall takes a larger type.
478 SDValue Op = DAG.getNode(Signed ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
479 NVT, N->getOperand(0));
480 return MakeLibCall(LC, TLI.getTypeToTransformTo(RVT), &Op, 1, false, dl);
484 //===----------------------------------------------------------------------===//
485 // Operand Float to Integer Conversion..
486 //===----------------------------------------------------------------------===//
488 bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) {
489 DEBUG(cerr << "Soften float operand " << OpNo << ": "; N->dump(&DAG);
491 SDValue Res = SDValue();
493 switch (N->getOpcode()) {
496 cerr << "SoftenFloatOperand Op #" << OpNo << ": ";
497 N->dump(&DAG); cerr << "\n";
499 assert(0 && "Do not know how to soften this operator's operand!");
502 case ISD::BIT_CONVERT: Res = SoftenFloatOp_BIT_CONVERT(N); break;
503 case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break;
504 case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break;
505 case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break;
506 case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_UINT(N); break;
507 case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break;
508 case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break;
509 case ISD::STORE: Res = SoftenFloatOp_STORE(N, OpNo); break;
512 // If the result is null, the sub-method took care of registering results etc.
513 if (!Res.getNode()) return false;
515 // If the result is N, the sub-method updated N in place. Tell the legalizer
517 if (Res.getNode() == 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, DebugLoc dl) {
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*/, dl);
599 NewRHS = DAG.getConstant(0, RetVT);
600 CCCode = TLI.getCmpLibcallCC(LC1);
601 if (LC2 != RTLIB::UNKNOWN_LIBCALL) {
602 SDValue Tmp = DAG.getNode(ISD::SETCC, dl, TLI.getSetCCResultType(RetVT),
603 NewLHS, NewRHS, DAG.getCondCode(CCCode));
604 NewLHS = MakeLibCall(LC2, RetVT, Ops, 2, false/*sign irrelevant*/, dl);
605 NewLHS = DAG.getNode(ISD::SETCC, dl, TLI.getSetCCResultType(RetVT), NewLHS,
606 NewRHS, DAG.getCondCode(TLI.getCmpLibcallCC(LC2)));
607 NewLHS = DAG.getNode(ISD::OR, dl, Tmp.getValueType(), Tmp, NewLHS);
612 SDValue DAGTypeLegalizer::SoftenFloatOp_BIT_CONVERT(SDNode *N) {
613 return DAG.getNode(ISD::BIT_CONVERT, N->getDebugLoc(), 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, N->getDebugLoc());
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, N->getDebugLoc());
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, N->getDebugLoc());
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, N->getDebugLoc());
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, N->getDebugLoc());
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, N->getDebugLoc());
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();
702 DebugLoc dl = N->getDebugLoc();
704 if (ST->isTruncatingStore())
705 // Do an FP_ROUND followed by a non-truncating store.
706 Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, dl, ST->getMemoryVT(),
707 Val, DAG.getIntPtrConstant(0)));
709 Val = GetSoftenedFloat(Val);
711 return DAG.getStore(ST->getChain(), dl, Val, ST->getBasePtr(),
712 ST->getSrcValue(), ST->getSrcValueOffset(),
713 ST->isVolatile(), ST->getAlignment());
717 //===----------------------------------------------------------------------===//
718 // Float Result Expansion
719 //===----------------------------------------------------------------------===//
721 /// ExpandFloatResult - This method is called when the specified result of the
722 /// specified node is found to need expansion. At this point, the node may also
723 /// have invalid operands or may have other results that need promotion, we just
724 /// know that (at least) one result needs expansion.
725 void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) {
726 DEBUG(cerr << "Expand float result: "; N->dump(&DAG); cerr << "\n");
730 // See if the target wants to custom expand this node.
731 if (CustomLowerResults(N, N->getValueType(ResNo), true))
734 switch (N->getOpcode()) {
737 cerr << "ExpandFloatResult #" << ResNo << ": ";
738 N->dump(&DAG); cerr << "\n";
740 assert(0 && "Do not know how to expand the result of this operator!");
743 case ISD::MERGE_VALUES: SplitRes_MERGE_VALUES(N, Lo, Hi); break;
744 case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break;
745 case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break;
746 case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break;
748 case ISD::BIT_CONVERT: ExpandRes_BIT_CONVERT(N, Lo, Hi); break;
749 case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break;
750 case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break;
751 case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break;
752 case ISD::VAARG: ExpandRes_VAARG(N, Lo, Hi); break;
754 case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break;
755 case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break;
756 case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break;
757 case ISD::FCEIL: ExpandFloatRes_FCEIL(N, Lo, Hi); break;
758 case ISD::FCOS: ExpandFloatRes_FCOS(N, Lo, Hi); break;
759 case ISD::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break;
760 case ISD::FEXP: ExpandFloatRes_FEXP(N, Lo, Hi); break;
761 case ISD::FEXP2: ExpandFloatRes_FEXP2(N, Lo, Hi); break;
762 case ISD::FFLOOR: ExpandFloatRes_FFLOOR(N, Lo, Hi); break;
763 case ISD::FLOG: ExpandFloatRes_FLOG(N, Lo, Hi); break;
764 case ISD::FLOG2: ExpandFloatRes_FLOG2(N, Lo, Hi); break;
765 case ISD::FLOG10: ExpandFloatRes_FLOG10(N, Lo, Hi); break;
766 case ISD::FMUL: ExpandFloatRes_FMUL(N, Lo, Hi); break;
767 case ISD::FNEARBYINT: ExpandFloatRes_FNEARBYINT(N, Lo, Hi); break;
768 case ISD::FNEG: ExpandFloatRes_FNEG(N, Lo, Hi); break;
769 case ISD::FP_EXTEND: ExpandFloatRes_FP_EXTEND(N, Lo, Hi); break;
770 case ISD::FPOW: ExpandFloatRes_FPOW(N, Lo, Hi); break;
771 case ISD::FPOWI: ExpandFloatRes_FPOWI(N, Lo, Hi); break;
772 case ISD::FRINT: ExpandFloatRes_FRINT(N, Lo, Hi); break;
773 case ISD::FSIN: ExpandFloatRes_FSIN(N, Lo, Hi); break;
774 case ISD::FSQRT: ExpandFloatRes_FSQRT(N, Lo, Hi); break;
775 case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break;
776 case ISD::FTRUNC: ExpandFloatRes_FTRUNC(N, Lo, Hi); break;
777 case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break;
778 case ISD::SINT_TO_FP:
779 case ISD::UINT_TO_FP: ExpandFloatRes_XINT_TO_FP(N, Lo, Hi); break;
782 // If Lo/Hi is null, the sub-method took care of registering results etc.
784 SetExpandedFloat(SDValue(N, ResNo), Lo, Hi);
787 void DAGTypeLegalizer::ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo,
789 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
790 assert(NVT.getSizeInBits() == integerPartWidth &&
791 "Do not know how to expand this float constant!");
792 APInt C = cast<ConstantFPSDNode>(N)->getValueAPF().bitcastToAPInt();
793 Lo = DAG.getConstantFP(APFloat(APInt(integerPartWidth, 1,
794 &C.getRawData()[1])), NVT);
795 Hi = DAG.getConstantFP(APFloat(APInt(integerPartWidth, 1,
796 &C.getRawData()[0])), NVT);
799 void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo,
801 assert(N->getValueType(0) == MVT::ppcf128 &&
802 "Logic only correct for ppcf128!");
803 DebugLoc dl = N->getDebugLoc();
805 GetExpandedFloat(N->getOperand(0), Lo, Tmp);
806 Hi = DAG.getNode(ISD::FABS, dl, Tmp.getValueType(), Tmp);
807 // Lo = Hi==fabs(Hi) ? Lo : -Lo;
808 Lo = DAG.getNode(ISD::SELECT_CC, dl, Lo.getValueType(), Tmp, Hi, Lo,
809 DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo),
810 DAG.getCondCode(ISD::SETEQ));
813 void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo,
815 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
816 RTLIB::ADD_F32, RTLIB::ADD_F64,
817 RTLIB::ADD_F80, RTLIB::ADD_PPCF128),
819 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
820 "Call lowered wrongly!");
821 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
824 void DAGTypeLegalizer::ExpandFloatRes_FCEIL(SDNode *N,
825 SDValue &Lo, SDValue &Hi) {
826 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
827 RTLIB::CEIL_F32, RTLIB::CEIL_F64,
828 RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128),
830 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
831 "Call lowered wrongly!");
832 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
835 void DAGTypeLegalizer::ExpandFloatRes_FCOS(SDNode *N,
836 SDValue &Lo, SDValue &Hi) {
837 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
838 RTLIB::COS_F32, RTLIB::COS_F64,
839 RTLIB::COS_F80, RTLIB::COS_PPCF128),
841 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
842 "Call lowered wrongly!");
843 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
846 void DAGTypeLegalizer::ExpandFloatRes_FDIV(SDNode *N, SDValue &Lo,
848 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
849 SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
854 N->getValueType(0), Ops, 2, false,
856 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
857 "Call lowered wrongly!");
858 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
861 void DAGTypeLegalizer::ExpandFloatRes_FEXP(SDNode *N,
862 SDValue &Lo, SDValue &Hi) {
863 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
864 RTLIB::EXP_F32, RTLIB::EXP_F64,
865 RTLIB::EXP_F80, RTLIB::EXP_PPCF128),
867 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
868 "Call lowered wrongly!");
869 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
872 void DAGTypeLegalizer::ExpandFloatRes_FEXP2(SDNode *N,
873 SDValue &Lo, SDValue &Hi) {
874 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
875 RTLIB::EXP2_F32, RTLIB::EXP2_F64,
876 RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128),
878 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
879 "Call lowered wrongly!");
880 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
883 void DAGTypeLegalizer::ExpandFloatRes_FFLOOR(SDNode *N,
884 SDValue &Lo, SDValue &Hi) {
885 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
886 RTLIB::FLOOR_F32,RTLIB::FLOOR_F64,
887 RTLIB::FLOOR_F80,RTLIB::FLOOR_PPCF128),
889 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
890 "Call lowered wrongly!");
891 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
894 void DAGTypeLegalizer::ExpandFloatRes_FLOG(SDNode *N,
895 SDValue &Lo, SDValue &Hi) {
896 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
897 RTLIB::LOG_F32, RTLIB::LOG_F64,
898 RTLIB::LOG_F80, RTLIB::LOG_PPCF128),
900 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
901 "Call lowered wrongly!");
902 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
905 void DAGTypeLegalizer::ExpandFloatRes_FLOG2(SDNode *N,
906 SDValue &Lo, SDValue &Hi) {
907 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
908 RTLIB::LOG2_F32, RTLIB::LOG2_F64,
909 RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128),
911 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
912 "Call lowered wrongly!");
913 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
916 void DAGTypeLegalizer::ExpandFloatRes_FLOG10(SDNode *N,
917 SDValue &Lo, SDValue &Hi) {
918 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
919 RTLIB::LOG10_F32,RTLIB::LOG10_F64,
920 RTLIB::LOG10_F80,RTLIB::LOG10_PPCF128),
922 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
923 "Call lowered wrongly!");
924 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
927 void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDValue &Lo,
929 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
930 SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
935 N->getValueType(0), Ops, 2, false,
937 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
938 "Call lowered wrongly!");
939 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
942 void DAGTypeLegalizer::ExpandFloatRes_FNEARBYINT(SDNode *N,
943 SDValue &Lo, SDValue &Hi) {
944 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
945 RTLIB::NEARBYINT_F32,
946 RTLIB::NEARBYINT_F64,
947 RTLIB::NEARBYINT_F80,
948 RTLIB::NEARBYINT_PPCF128),
950 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
951 "Call lowered wrongly!");
952 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
955 void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDValue &Lo,
957 DebugLoc dl = N->getDebugLoc();
958 GetExpandedFloat(N->getOperand(0), Lo, Hi);
959 Lo = DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo);
960 Hi = DAG.getNode(ISD::FNEG, dl, Hi.getValueType(), Hi);
963 void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo,
965 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
966 Hi = DAG.getNode(ISD::FP_EXTEND, N->getDebugLoc(), NVT, N->getOperand(0));
967 Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
970 void DAGTypeLegalizer::ExpandFloatRes_FPOW(SDNode *N,
971 SDValue &Lo, SDValue &Hi) {
972 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
973 RTLIB::POW_F32, RTLIB::POW_F64,
974 RTLIB::POW_F80, RTLIB::POW_PPCF128),
976 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
977 "Call lowered wrongly!");
978 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
981 void DAGTypeLegalizer::ExpandFloatRes_FPOWI(SDNode *N,
982 SDValue &Lo, SDValue &Hi) {
983 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
984 RTLIB::POWI_F32, RTLIB::POWI_F64,
985 RTLIB::POWI_F80, RTLIB::POWI_PPCF128),
987 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
988 "Call lowered wrongly!");
989 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
992 void DAGTypeLegalizer::ExpandFloatRes_FRINT(SDNode *N,
993 SDValue &Lo, SDValue &Hi) {
994 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
995 RTLIB::RINT_F32, RTLIB::RINT_F64,
996 RTLIB::RINT_F80, RTLIB::RINT_PPCF128),
998 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
999 "Call lowered wrongly!");
1000 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
1003 void DAGTypeLegalizer::ExpandFloatRes_FSIN(SDNode *N,
1004 SDValue &Lo, SDValue &Hi) {
1005 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1006 RTLIB::SIN_F32, RTLIB::SIN_F64,
1007 RTLIB::SIN_F80, RTLIB::SIN_PPCF128),
1009 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
1010 "Call lowered wrongly!");
1011 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
1014 void DAGTypeLegalizer::ExpandFloatRes_FSQRT(SDNode *N,
1015 SDValue &Lo, SDValue &Hi) {
1016 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1017 RTLIB::SQRT_F32, RTLIB::SQRT_F64,
1018 RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128),
1020 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
1021 "Call lowered wrongly!");
1022 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
1025 void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo,
1027 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
1028 SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
1032 RTLIB::SUB_PPCF128),
1033 N->getValueType(0), Ops, 2, false,
1035 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
1036 "Call lowered wrongly!");
1037 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
1040 void DAGTypeLegalizer::ExpandFloatRes_FTRUNC(SDNode *N,
1041 SDValue &Lo, SDValue &Hi) {
1042 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1043 RTLIB::TRUNC_F32, RTLIB::TRUNC_F64,
1044 RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128),
1046 assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
1047 "Call lowered wrongly!");
1048 Lo = Call.getOperand(0); Hi = Call.getOperand(1);
1051 void DAGTypeLegalizer::ExpandFloatRes_LOAD(SDNode *N, SDValue &Lo,
1053 if (ISD::isNormalLoad(N)) {
1054 ExpandRes_NormalLoad(N, Lo, Hi);
1058 assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!");
1059 LoadSDNode *LD = cast<LoadSDNode>(N);
1060 SDValue Chain = LD->getChain();
1061 SDValue Ptr = LD->getBasePtr();
1062 DebugLoc dl = N->getDebugLoc();
1064 MVT NVT = TLI.getTypeToTransformTo(LD->getValueType(0));
1065 assert(NVT.isByteSized() && "Expanded type not byte sized!");
1066 assert(LD->getMemoryVT().bitsLE(NVT) && "Float type not round?");
1068 Hi = DAG.getExtLoad(LD->getExtensionType(), dl, NVT, Chain, Ptr,
1069 LD->getSrcValue(), LD->getSrcValueOffset(),
1071 LD->isVolatile(), LD->getAlignment());
1073 // Remember the chain.
1074 Chain = Hi.getValue(1);
1076 // The low part is zero.
1077 Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
1079 // Modified the chain - switch anything that used the old chain to use the
1081 ReplaceValueWith(SDValue(LD, 1), Chain);
1084 void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo,
1086 assert(N->getValueType(0) == MVT::ppcf128 && "Unsupported XINT_TO_FP!");
1087 MVT VT = N->getValueType(0);
1088 MVT NVT = TLI.getTypeToTransformTo(VT);
1089 SDValue Src = N->getOperand(0);
1090 MVT SrcVT = Src.getValueType();
1091 bool isSigned = N->getOpcode() == ISD::SINT_TO_FP;
1092 DebugLoc dl = N->getDebugLoc();
1094 // First do an SINT_TO_FP, whether the original was signed or unsigned.
1095 // When promoting partial word types to i32 we must honor the signedness,
1097 if (SrcVT.bitsLE(MVT::i32)) {
1098 // The integer can be represented exactly in an f64.
1099 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
1101 Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
1102 Hi = DAG.getNode(ISD::SINT_TO_FP, dl, NVT, Src);
1104 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
1105 if (SrcVT.bitsLE(MVT::i64)) {
1106 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
1108 LC = RTLIB::SINTTOFP_I64_PPCF128;
1109 } else if (SrcVT.bitsLE(MVT::i128)) {
1110 Src = DAG.getNode(ISD::SIGN_EXTEND, MVT::i128, Src);
1111 LC = RTLIB::SINTTOFP_I128_PPCF128;
1113 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
1115 Hi = MakeLibCall(LC, VT, &Src, 1, true, dl);
1116 assert(Hi.getNode()->getOpcode() == ISD::BUILD_PAIR &&
1117 "Call lowered wrongly!");
1118 Lo = Hi.getOperand(0); Hi = Hi.getOperand(1);
1124 // Unsigned - fix up the SINT_TO_FP value just calculated.
1125 Hi = DAG.getNode(ISD::BUILD_PAIR, dl, VT, Lo, Hi);
1126 SrcVT = Src.getValueType();
1128 // x>=0 ? (ppcf128)(iN)x : (ppcf128)(iN)x + 2^N; N=32,64,128.
1129 static const uint64_t TwoE32[] = { 0x41f0000000000000LL, 0 };
1130 static const uint64_t TwoE64[] = { 0x43f0000000000000LL, 0 };
1131 static const uint64_t TwoE128[] = { 0x47f0000000000000LL, 0 };
1132 const uint64_t *Parts = 0;
1134 switch (SrcVT.getSimpleVT()) {
1136 assert(false && "Unsupported UINT_TO_FP!");
1148 Lo = DAG.getNode(ISD::FADD, dl, VT, Hi,
1149 DAG.getConstantFP(APFloat(APInt(128, 2, Parts)),
1151 Lo = DAG.getNode(ISD::SELECT_CC, dl, VT, Src, DAG.getConstant(0, SrcVT),
1152 Lo, Hi, DAG.getCondCode(ISD::SETLT));
1153 Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, NVT, Lo, DAG.getIntPtrConstant(1));
1154 Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, NVT, Lo, DAG.getIntPtrConstant(0));
1158 //===----------------------------------------------------------------------===//
1159 // Float Operand Expansion
1160 //===----------------------------------------------------------------------===//
1162 /// ExpandFloatOperand - This method is called when the specified operand of the
1163 /// specified node is found to need expansion. At this point, all of the result
1164 /// types of the node are known to be legal, but other operands of the node may
1165 /// need promotion or expansion as well as the specified one.
1166 bool DAGTypeLegalizer::ExpandFloatOperand(SDNode *N, unsigned OpNo) {
1167 DEBUG(cerr << "Expand float operand: "; N->dump(&DAG); cerr << "\n");
1168 SDValue Res = SDValue();
1170 if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType())
1171 == TargetLowering::Custom)
1172 Res = TLI.LowerOperation(SDValue(N, 0), DAG);
1174 if (Res.getNode() == 0) {
1175 switch (N->getOpcode()) {
1178 cerr << "ExpandFloatOperand Op #" << OpNo << ": ";
1179 N->dump(&DAG); cerr << "\n";
1181 assert(0 && "Do not know how to expand this operator's operand!");
1184 case ISD::BIT_CONVERT: Res = ExpandOp_BIT_CONVERT(N); break;
1185 case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break;
1186 case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break;
1188 case ISD::BR_CC: Res = ExpandFloatOp_BR_CC(N); break;
1189 case ISD::FP_ROUND: Res = ExpandFloatOp_FP_ROUND(N); break;
1190 case ISD::FP_TO_SINT: Res = ExpandFloatOp_FP_TO_SINT(N); break;
1191 case ISD::FP_TO_UINT: Res = ExpandFloatOp_FP_TO_UINT(N); break;
1192 case ISD::SELECT_CC: Res = ExpandFloatOp_SELECT_CC(N); break;
1193 case ISD::SETCC: Res = ExpandFloatOp_SETCC(N); break;
1194 case ISD::STORE: Res = ExpandFloatOp_STORE(cast<StoreSDNode>(N),
1199 // If the result is null, the sub-method took care of registering results etc.
1200 if (!Res.getNode()) return false;
1202 // If the result is N, the sub-method updated N in place. Tell the legalizer
1204 if (Res.getNode() == N)
1207 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
1208 "Invalid operand expansion");
1210 ReplaceValueWith(SDValue(N, 0), Res);
1214 /// FloatExpandSetCCOperands - Expand the operands of a comparison. This code
1215 /// is shared among BR_CC, SELECT_CC, and SETCC handlers.
1216 void DAGTypeLegalizer::FloatExpandSetCCOperands(SDValue &NewLHS,
1218 ISD::CondCode &CCCode,
1220 SDValue LHSLo, LHSHi, RHSLo, RHSHi;
1221 GetExpandedFloat(NewLHS, LHSLo, LHSHi);
1222 GetExpandedFloat(NewRHS, RHSLo, RHSHi);
1224 MVT VT = NewLHS.getValueType();
1225 assert(VT == MVT::ppcf128 && "Unsupported setcc type!");
1227 // FIXME: This generated code sucks. We want to generate
1228 // FCMPU crN, hi1, hi2
1230 // FCMPU crN, lo1, lo2
1231 // The following can be improved, but not that much.
1232 SDValue Tmp1, Tmp2, Tmp3;
1233 Tmp1 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSHi.getValueType()),
1234 LHSHi, RHSHi, ISD::SETOEQ);
1235 Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSLo.getValueType()),
1236 LHSLo, RHSLo, CCCode);
1237 Tmp3 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2);
1238 Tmp1 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSHi.getValueType()),
1239 LHSHi, RHSHi, ISD::SETUNE);
1240 Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSHi.getValueType()),
1241 LHSHi, RHSHi, CCCode);
1242 Tmp1 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2);
1243 NewLHS = DAG.getNode(ISD::OR, dl, Tmp1.getValueType(), Tmp1, Tmp3);
1244 NewRHS = SDValue(); // LHS is the result, not a compare.
1247 SDValue DAGTypeLegalizer::ExpandFloatOp_BR_CC(SDNode *N) {
1248 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
1249 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
1250 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc());
1252 // If ExpandSetCCOperands returned a scalar, we need to compare the result
1253 // against zero to select between true and false values.
1254 if (NewRHS.getNode() == 0) {
1255 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
1256 CCCode = ISD::SETNE;
1259 // Update N to have the operands specified.
1260 return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0),
1261 DAG.getCondCode(CCCode), NewLHS, NewRHS,
1265 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_ROUND(SDNode *N) {
1266 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1267 "Logic only correct for ppcf128!");
1269 GetExpandedFloat(N->getOperand(0), Lo, Hi);
1270 // Round it the rest of the way (e.g. to f32) if needed.
1271 return DAG.getNode(ISD::FP_ROUND, N->getDebugLoc(),
1272 N->getValueType(0), Hi, N->getOperand(1));
1275 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) {
1276 MVT RVT = N->getValueType(0);
1277 DebugLoc dl = N->getDebugLoc();
1279 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
1280 // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
1281 if (RVT == MVT::i32) {
1282 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1283 "Logic only correct for ppcf128!");
1284 SDValue Res = DAG.getNode(ISD::FP_ROUND_INREG, dl, MVT::ppcf128,
1285 N->getOperand(0), DAG.getValueType(MVT::f64));
1286 Res = DAG.getNode(ISD::FP_ROUND, dl, MVT::f64, Res,
1287 DAG.getIntPtrConstant(1));
1288 return DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, Res);
1291 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
1292 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
1293 return MakeLibCall(LC, RVT, &N->getOperand(0), 1, false, dl);
1296 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) {
1297 MVT RVT = N->getValueType(0);
1298 DebugLoc dl = N->getDebugLoc();
1300 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
1301 // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
1302 if (RVT == MVT::i32) {
1303 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1304 "Logic only correct for ppcf128!");
1305 const uint64_t TwoE31[] = {0x41e0000000000000LL, 0};
1306 APFloat APF = APFloat(APInt(128, 2, TwoE31));
1307 SDValue Tmp = DAG.getConstantFP(APF, MVT::ppcf128);
1308 // X>=2^31 ? (int)(X-2^31)+0x80000000 : (int)X
1309 // FIXME: generated code sucks.
1310 return DAG.getNode(ISD::SELECT_CC, dl, MVT::i32, N->getOperand(0), Tmp,
1311 DAG.getNode(ISD::ADD, dl, MVT::i32,
1312 DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32,
1313 DAG.getNode(ISD::FSUB, dl,
1317 DAG.getConstant(0x80000000, MVT::i32)),
1318 DAG.getNode(ISD::FP_TO_SINT, dl,
1319 MVT::i32, N->getOperand(0)),
1320 DAG.getCondCode(ISD::SETGE));
1323 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
1324 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
1325 return MakeLibCall(LC, N->getValueType(0), &N->getOperand(0), 1, false, dl);
1328 SDValue DAGTypeLegalizer::ExpandFloatOp_SELECT_CC(SDNode *N) {
1329 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
1330 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
1331 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc());
1333 // If ExpandSetCCOperands returned a scalar, we need to compare the result
1334 // against zero to select between true and false values.
1335 if (NewRHS.getNode() == 0) {
1336 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
1337 CCCode = ISD::SETNE;
1340 // Update N to have the operands specified.
1341 return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
1342 N->getOperand(2), N->getOperand(3),
1343 DAG.getCondCode(CCCode));
1346 SDValue DAGTypeLegalizer::ExpandFloatOp_SETCC(SDNode *N) {
1347 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
1348 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
1349 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc());
1351 // If ExpandSetCCOperands returned a scalar, use it.
1352 if (NewRHS.getNode() == 0) {
1353 assert(NewLHS.getValueType() == N->getValueType(0) &&
1354 "Unexpected setcc expansion!");
1358 // Otherwise, update N to have the operands specified.
1359 return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
1360 DAG.getCondCode(CCCode));
1363 SDValue DAGTypeLegalizer::ExpandFloatOp_STORE(SDNode *N, unsigned OpNo) {
1364 if (ISD::isNormalStore(N))
1365 return ExpandOp_NormalStore(N, OpNo);
1367 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
1368 assert(OpNo == 1 && "Can only expand the stored value so far");
1369 StoreSDNode *ST = cast<StoreSDNode>(N);
1371 SDValue Chain = ST->getChain();
1372 SDValue Ptr = ST->getBasePtr();
1374 MVT NVT = TLI.getTypeToTransformTo(ST->getValue().getValueType());
1375 assert(NVT.isByteSized() && "Expanded type not byte sized!");
1376 assert(ST->getMemoryVT().bitsLE(NVT) && "Float type not round?");
1379 GetExpandedOp(ST->getValue(), Lo, Hi);
1381 return DAG.getTruncStore(Chain, N->getDebugLoc(), Hi, Ptr,
1382 ST->getSrcValue(), ST->getSrcValueOffset(),
1384 ST->isVolatile(), ST->getAlignment());