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Indentation change.
[llvm/avr.git] / lib / CodeGen / SelectionDAG / LegalizeFloatTypes.cpp
blob84e39b4803966647953481f663e1bd40b83f97bc
1 //===-------- LegalizeFloatTypes.cpp - Legalization of float types --------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
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.
19 //
20 //===----------------------------------------------------------------------===//
21
22 #include "LegalizeTypes.h"
23 #include "llvm/Support/ErrorHandling.h"
24 #include "llvm/Support/raw_ostream.h"
25 using namespace llvm;
26
27 /// GetFPLibCall - Return the right libcall for the given floating point type.
28 static RTLIB::Libcall GetFPLibCall(EVT VT,
29 RTLIB::Libcall Call_F32,
30 RTLIB::Libcall Call_F64,
31 RTLIB::Libcall Call_F80,
32 RTLIB::Libcall Call_PPCF128) {
33 return
34 VT == MVT::f32 ? Call_F32 :
35 VT == MVT::f64 ? Call_F64 :
36 VT == MVT::f80 ? Call_F80 :
37 VT == MVT::ppcf128 ? Call_PPCF128 :
38 RTLIB::UNKNOWN_LIBCALL;
39 }
40
41 //===----------------------------------------------------------------------===//
42 // Result Float to Integer Conversion.
43 //===----------------------------------------------------------------------===//
44
45 void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) {
46 DEBUG(errs() << "Soften float result " << ResNo << ": "; N->dump(&DAG);
47 errs() << "\n");
48 SDValue R = SDValue();
49
50 switch (N->getOpcode()) {
51 default:
52 #ifndef NDEBUG
53 errs() << "SoftenFloatResult #" << ResNo << ": ";
54 N->dump(&DAG); errs() << "\n";
55 #endif
56 llvm_unreachable("Do not know how to soften the result of this operator!");
57
58 case ISD::BIT_CONVERT: R = SoftenFloatRes_BIT_CONVERT(N); break;
59 case ISD::BUILD_PAIR: R = SoftenFloatRes_BUILD_PAIR(N); break;
60 case ISD::ConstantFP:
61 R = SoftenFloatRes_ConstantFP(cast<ConstantFPSDNode>(N));
62 break;
63 case ISD::EXTRACT_VECTOR_ELT:
64 R = SoftenFloatRes_EXTRACT_VECTOR_ELT(N); break;
65 case ISD::FABS: R = SoftenFloatRes_FABS(N); break;
66 case ISD::FADD: R = SoftenFloatRes_FADD(N); break;
67 case ISD::FCEIL: R = SoftenFloatRes_FCEIL(N); break;
68 case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break;
69 case ISD::FCOS: R = SoftenFloatRes_FCOS(N); break;
70 case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break;
71 case ISD::FEXP: R = SoftenFloatRes_FEXP(N); break;
72 case ISD::FEXP2: R = SoftenFloatRes_FEXP2(N); break;
73 case ISD::FFLOOR: R = SoftenFloatRes_FFLOOR(N); break;
74 case ISD::FLOG: R = SoftenFloatRes_FLOG(N); break;
75 case ISD::FLOG2: R = SoftenFloatRes_FLOG2(N); break;
76 case ISD::FLOG10: R = SoftenFloatRes_FLOG10(N); break;
77 case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break;
78 case ISD::FNEARBYINT: R = SoftenFloatRes_FNEARBYINT(N); break;
79 case ISD::FNEG: R = SoftenFloatRes_FNEG(N); break;
80 case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break;
81 case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break;
82 case ISD::FPOW: R = SoftenFloatRes_FPOW(N); break;
83 case ISD::FPOWI: R = SoftenFloatRes_FPOWI(N); break;
84 case ISD::FREM: R = SoftenFloatRes_FREM(N); break;
85 case ISD::FRINT: R = SoftenFloatRes_FRINT(N); break;
86 case ISD::FSIN: R = SoftenFloatRes_FSIN(N); break;
87 case ISD::FSQRT: R = SoftenFloatRes_FSQRT(N); break;
88 case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break;
89 case ISD::FTRUNC: R = SoftenFloatRes_FTRUNC(N); break;
90 case ISD::LOAD: R = SoftenFloatRes_LOAD(N); break;
91 case ISD::SELECT: R = SoftenFloatRes_SELECT(N); break;
92 case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N); break;
93 case ISD::SINT_TO_FP:
94 case ISD::UINT_TO_FP: R = SoftenFloatRes_XINT_TO_FP(N); break;
95 case ISD::UNDEF: R = SoftenFloatRes_UNDEF(N); break;
96 case ISD::VAARG: R = SoftenFloatRes_VAARG(N); break;
97 }
98
99 // If R is null, the sub-method took care of registering the result.
100 if (R.getNode())
101 SetSoftenedFloat(SDValue(N, ResNo), R);
102 }
103
104 SDValue DAGTypeLegalizer::SoftenFloatRes_BIT_CONVERT(SDNode *N) {
105 return BitConvertToInteger(N->getOperand(0));
106 }
107
108 SDValue DAGTypeLegalizer::SoftenFloatRes_BUILD_PAIR(SDNode *N) {
109 // Convert the inputs to integers, and build a new pair out of them.
110 return DAG.getNode(ISD::BUILD_PAIR, N->getDebugLoc(),
111 TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)),
112 BitConvertToInteger(N->getOperand(0)),
113 BitConvertToInteger(N->getOperand(1)));
114 }
115
116 SDValue DAGTypeLegalizer::SoftenFloatRes_ConstantFP(ConstantFPSDNode *N) {
117 return DAG.getConstant(N->getValueAPF().bitcastToAPInt(),
118 TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)));
119 }
120
121 SDValue DAGTypeLegalizer::SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N) {
122 SDValue NewOp = BitConvertVectorToIntegerVector(N->getOperand(0));
123 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, N->getDebugLoc(),
124 NewOp.getValueType().getVectorElementType(),
125 NewOp, N->getOperand(1));
126 }
127
128 SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) {
129 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
130 unsigned Size = NVT.getSizeInBits();
131
132 // Mask = ~(1 << (Size-1))
133 SDValue Mask = DAG.getConstant(APInt::getAllOnesValue(Size).clear(Size-1),
134 NVT);
135 SDValue Op = GetSoftenedFloat(N->getOperand(0));
136 return DAG.getNode(ISD::AND, N->getDebugLoc(), NVT, Op, Mask);
137 }
138
139 SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) {
140 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
141 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
142 GetSoftenedFloat(N->getOperand(1)) };
143 return MakeLibCall(GetFPLibCall(N->getValueType(0),
144 RTLIB::ADD_F32,
145 RTLIB::ADD_F64,
146 RTLIB::ADD_F80,
147 RTLIB::ADD_PPCF128),
148 NVT, Ops, 2, false, N->getDebugLoc());
149 }
150
151 SDValue DAGTypeLegalizer::SoftenFloatRes_FCEIL(SDNode *N) {
152 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
153 SDValue Op = GetSoftenedFloat(N->getOperand(0));
154 return MakeLibCall(GetFPLibCall(N->getValueType(0),
155 RTLIB::CEIL_F32,
156 RTLIB::CEIL_F64,
157 RTLIB::CEIL_F80,
158 RTLIB::CEIL_PPCF128),
159 NVT, &Op, 1, false, N->getDebugLoc());
160 }
161
162 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) {
163 SDValue LHS = GetSoftenedFloat(N->getOperand(0));
164 SDValue RHS = BitConvertToInteger(N->getOperand(1));
165 DebugLoc dl = N->getDebugLoc();
166
167 EVT LVT = LHS.getValueType();
168 EVT RVT = RHS.getValueType();
169
170 unsigned LSize = LVT.getSizeInBits();
171 unsigned RSize = RVT.getSizeInBits();
172
173 // First get the sign bit of second operand.
174 SDValue SignBit = DAG.getNode(ISD::SHL, dl, RVT, DAG.getConstant(1, RVT),
175 DAG.getConstant(RSize - 1,
176 TLI.getShiftAmountTy()));
177 SignBit = DAG.getNode(ISD::AND, dl, RVT, RHS, SignBit);
178
179 // Shift right or sign-extend it if the two operands have different types.
180 int SizeDiff = RVT.getSizeInBits() - LVT.getSizeInBits();
181 if (SizeDiff > 0) {
182 SignBit = DAG.getNode(ISD::SRL, dl, RVT, SignBit,
183 DAG.getConstant(SizeDiff, TLI.getShiftAmountTy()));
184 SignBit = DAG.getNode(ISD::TRUNCATE, dl, LVT, SignBit);
185 } else if (SizeDiff < 0) {
186 SignBit = DAG.getNode(ISD::ANY_EXTEND, dl, LVT, SignBit);
187 SignBit = DAG.getNode(ISD::SHL, dl, LVT, SignBit,
188 DAG.getConstant(-SizeDiff, TLI.getShiftAmountTy()));
189 }
190
191 // Clear the sign bit of the first operand.
192 SDValue Mask = DAG.getNode(ISD::SHL, dl, LVT, DAG.getConstant(1, LVT),
193 DAG.getConstant(LSize - 1,
194 TLI.getShiftAmountTy()));
195 Mask = DAG.getNode(ISD::SUB, dl, LVT, Mask, DAG.getConstant(1, LVT));
196 LHS = DAG.getNode(ISD::AND, dl, LVT, LHS, Mask);
197
198 // Or the value with the sign bit.
199 return DAG.getNode(ISD::OR, dl, LVT, LHS, SignBit);
200 }
201
202 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) {
203 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
204 SDValue Op = GetSoftenedFloat(N->getOperand(0));
205 return MakeLibCall(GetFPLibCall(N->getValueType(0),
206 RTLIB::COS_F32,
207 RTLIB::COS_F64,
208 RTLIB::COS_F80,
209 RTLIB::COS_PPCF128),
210 NVT, &Op, 1, false, N->getDebugLoc());
211 }
212
213 SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
214 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
215 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
216 GetSoftenedFloat(N->getOperand(1)) };
217 return MakeLibCall(GetFPLibCall(N->getValueType(0),
218 RTLIB::DIV_F32,
219 RTLIB::DIV_F64,
220 RTLIB::DIV_F80,
221 RTLIB::DIV_PPCF128),
222 NVT, Ops, 2, false, N->getDebugLoc());
223 }
224
225 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) {
226 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
227 SDValue Op = GetSoftenedFloat(N->getOperand(0));
228 return MakeLibCall(GetFPLibCall(N->getValueType(0),
229 RTLIB::EXP_F32,
230 RTLIB::EXP_F64,
231 RTLIB::EXP_F80,
232 RTLIB::EXP_PPCF128),
233 NVT, &Op, 1, false, N->getDebugLoc());
234 }
235
236 SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) {
237 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
238 SDValue Op = GetSoftenedFloat(N->getOperand(0));
239 return MakeLibCall(GetFPLibCall(N->getValueType(0),
240 RTLIB::EXP2_F32,
241 RTLIB::EXP2_F64,
242 RTLIB::EXP2_F80,
243 RTLIB::EXP2_PPCF128),
244 NVT, &Op, 1, false, N->getDebugLoc());
245 }
246
247 SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) {
248 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
249 SDValue Op = GetSoftenedFloat(N->getOperand(0));
250 return MakeLibCall(GetFPLibCall(N->getValueType(0),
251 RTLIB::FLOOR_F32,
252 RTLIB::FLOOR_F64,
253 RTLIB::FLOOR_F80,
254 RTLIB::FLOOR_PPCF128),
255 NVT, &Op, 1, false, N->getDebugLoc());
256 }
257
258 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) {
259 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
260 SDValue Op = GetSoftenedFloat(N->getOperand(0));
261 return MakeLibCall(GetFPLibCall(N->getValueType(0),
262 RTLIB::LOG_F32,
263 RTLIB::LOG_F64,
264 RTLIB::LOG_F80,
265 RTLIB::LOG_PPCF128),
266 NVT, &Op, 1, false, N->getDebugLoc());
267 }
268
269 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) {
270 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
271 SDValue Op = GetSoftenedFloat(N->getOperand(0));
272 return MakeLibCall(GetFPLibCall(N->getValueType(0),
273 RTLIB::LOG2_F32,
274 RTLIB::LOG2_F64,
275 RTLIB::LOG2_F80,
276 RTLIB::LOG2_PPCF128),
277 NVT, &Op, 1, false, N->getDebugLoc());
278 }
279
280 SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) {
281 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
282 SDValue Op = GetSoftenedFloat(N->getOperand(0));
283 return MakeLibCall(GetFPLibCall(N->getValueType(0),
284 RTLIB::LOG10_F32,
285 RTLIB::LOG10_F64,
286 RTLIB::LOG10_F80,
287 RTLIB::LOG10_PPCF128),
288 NVT, &Op, 1, false, N->getDebugLoc());
289 }
290
291 SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
292 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
293 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
294 GetSoftenedFloat(N->getOperand(1)) };
295 return MakeLibCall(GetFPLibCall(N->getValueType(0),
296 RTLIB::MUL_F32,
297 RTLIB::MUL_F64,
298 RTLIB::MUL_F80,
299 RTLIB::MUL_PPCF128),
300 NVT, Ops, 2, false, N->getDebugLoc());
301 }
302
303 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) {
304 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
305 SDValue Op = GetSoftenedFloat(N->getOperand(0));
306 return MakeLibCall(GetFPLibCall(N->getValueType(0),
307 RTLIB::NEARBYINT_F32,
308 RTLIB::NEARBYINT_F64,
309 RTLIB::NEARBYINT_F80,
310 RTLIB::NEARBYINT_PPCF128),
311 NVT, &Op, 1, false, N->getDebugLoc());
312 }
313
314 SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) {
315 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
316 // Expand Y = FNEG(X) -> Y = SUB -0.0, X
317 SDValue Ops[2] = { DAG.getConstantFP(-0.0, N->getValueType(0)),
318 GetSoftenedFloat(N->getOperand(0)) };
319 return MakeLibCall(GetFPLibCall(N->getValueType(0),
320 RTLIB::SUB_F32,
321 RTLIB::SUB_F64,
322 RTLIB::SUB_F80,
323 RTLIB::SUB_PPCF128),
324 NVT, Ops, 2, false, N->getDebugLoc());
325 }
326
327 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
328 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
329 SDValue Op = N->getOperand(0);
330 RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0));
331 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
332 return MakeLibCall(LC, NVT, &Op, 1, false, N->getDebugLoc());
333 }
334
335 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) {
336 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
337 SDValue Op = N->getOperand(0);
338 RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0));
339 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!");
340 return MakeLibCall(LC, NVT, &Op, 1, false, N->getDebugLoc());
341 }
342
343 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) {
344 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
345 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
346 GetSoftenedFloat(N->getOperand(1)) };
347 return MakeLibCall(GetFPLibCall(N->getValueType(0),
348 RTLIB::POW_F32,
349 RTLIB::POW_F64,
350 RTLIB::POW_F80,
351 RTLIB::POW_PPCF128),
352 NVT, Ops, 2, false, N->getDebugLoc());
353 }
354
355 SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) {
356 assert(N->getOperand(1).getValueType() == MVT::i32 &&
357 "Unsupported power type!");
358 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
359 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) };
360 return MakeLibCall(GetFPLibCall(N->getValueType(0),
361 RTLIB::POWI_F32,
362 RTLIB::POWI_F64,
363 RTLIB::POWI_F80,
364 RTLIB::POWI_PPCF128),
365 NVT, Ops, 2, false, N->getDebugLoc());
366 }
367
368 SDValue DAGTypeLegalizer::SoftenFloatRes_FREM(SDNode *N) {
369 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
370 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
371 GetSoftenedFloat(N->getOperand(1)) };
372 return MakeLibCall(GetFPLibCall(N->getValueType(0),
373 RTLIB::REM_F32,
374 RTLIB::REM_F64,
375 RTLIB::REM_F80,
376 RTLIB::REM_PPCF128),
377 NVT, Ops, 2, false, N->getDebugLoc());
378 }
379
380 SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) {
381 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
382 SDValue Op = GetSoftenedFloat(N->getOperand(0));
383 return MakeLibCall(GetFPLibCall(N->getValueType(0),
384 RTLIB::RINT_F32,
385 RTLIB::RINT_F64,
386 RTLIB::RINT_F80,
387 RTLIB::RINT_PPCF128),
388 NVT, &Op, 1, false, N->getDebugLoc());
389 }
390
391 SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) {
392 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
393 SDValue Op = GetSoftenedFloat(N->getOperand(0));
394 return MakeLibCall(GetFPLibCall(N->getValueType(0),
395 RTLIB::SIN_F32,
396 RTLIB::SIN_F64,
397 RTLIB::SIN_F80,
398 RTLIB::SIN_PPCF128),
399 NVT, &Op, 1, false, N->getDebugLoc());
400 }
401
402 SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) {
403 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
404 SDValue Op = GetSoftenedFloat(N->getOperand(0));
405 return MakeLibCall(GetFPLibCall(N->getValueType(0),
406 RTLIB::SQRT_F32,
407 RTLIB::SQRT_F64,
408 RTLIB::SQRT_F80,
409 RTLIB::SQRT_PPCF128),
410 NVT, &Op, 1, false, N->getDebugLoc());
411 }
412
413 SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
414 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
415 SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
416 GetSoftenedFloat(N->getOperand(1)) };
417 return MakeLibCall(GetFPLibCall(N->getValueType(0),
418 RTLIB::SUB_F32,
419 RTLIB::SUB_F64,
420 RTLIB::SUB_F80,
421 RTLIB::SUB_PPCF128),
422 NVT, Ops, 2, false, N->getDebugLoc());
423 }
424
425 SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) {
426 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
427 SDValue Op = GetSoftenedFloat(N->getOperand(0));
428 return MakeLibCall(GetFPLibCall(N->getValueType(0),
429 RTLIB::TRUNC_F32,
430 RTLIB::TRUNC_F64,
431 RTLIB::TRUNC_F80,
432 RTLIB::TRUNC_PPCF128),
433 NVT, &Op, 1, false, N->getDebugLoc());
434 }
435
436 SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) {
437 LoadSDNode *L = cast<LoadSDNode>(N);
438 EVT VT = N->getValueType(0);
439 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
440 DebugLoc dl = N->getDebugLoc();
441
442 SDValue NewL;
443 if (L->getExtensionType() == ISD::NON_EXTLOAD) {
444 NewL = DAG.getLoad(L->getAddressingMode(), dl, L->getExtensionType(),
445 NVT, L->getChain(), L->getBasePtr(), L->getOffset(),
446 L->getSrcValue(), L->getSrcValueOffset(), NVT,
447 L->isVolatile(), L->getAlignment());
448 // Legalized the chain result - switch anything that used the old chain to
449 // use the new one.
450 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
451 return NewL;
452 }
453
454 // Do a non-extending load followed by FP_EXTEND.
455 NewL = DAG.getLoad(L->getAddressingMode(), dl, ISD::NON_EXTLOAD,
456 L->getMemoryVT(), L->getChain(),
457 L->getBasePtr(), L->getOffset(),
458 L->getSrcValue(), L->getSrcValueOffset(),
459 L->getMemoryVT(),
460 L->isVolatile(), L->getAlignment());
461 // Legalized the chain result - switch anything that used the old chain to
462 // use the new one.
463 ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
464 return BitConvertToInteger(DAG.getNode(ISD::FP_EXTEND, dl, VT, NewL));
465 }
466
467 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N) {
468 SDValue LHS = GetSoftenedFloat(N->getOperand(1));
469 SDValue RHS = GetSoftenedFloat(N->getOperand(2));
470 return DAG.getNode(ISD::SELECT, N->getDebugLoc(),
471 LHS.getValueType(), N->getOperand(0),LHS,RHS);
472 }
473
474 SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT_CC(SDNode *N) {
475 SDValue LHS = GetSoftenedFloat(N->getOperand(2));
476 SDValue RHS = GetSoftenedFloat(N->getOperand(3));
477 return DAG.getNode(ISD::SELECT_CC, N->getDebugLoc(),
478 LHS.getValueType(), N->getOperand(0),
479 N->getOperand(1), LHS, RHS, N->getOperand(4));
480 }
481
482 SDValue DAGTypeLegalizer::SoftenFloatRes_UNDEF(SDNode *N) {
483 return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)));
484 }
485
486 SDValue DAGTypeLegalizer::SoftenFloatRes_VAARG(SDNode *N) {
487 SDValue Chain = N->getOperand(0); // Get the chain.
488 SDValue Ptr = N->getOperand(1); // Get the pointer.
489 EVT VT = N->getValueType(0);
490 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
491 DebugLoc dl = N->getDebugLoc();
492
493 SDValue NewVAARG;
494 NewVAARG = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2));
495
496 // Legalized the chain result - switch anything that used the old chain to
497 // use the new one.
498 ReplaceValueWith(SDValue(N, 1), NewVAARG.getValue(1));
499 return NewVAARG;
500 }
501
502 SDValue DAGTypeLegalizer::SoftenFloatRes_XINT_TO_FP(SDNode *N) {
503 bool Signed = N->getOpcode() == ISD::SINT_TO_FP;
504 EVT SVT = N->getOperand(0).getValueType();
505 EVT RVT = N->getValueType(0);
506 EVT NVT = EVT();
507 DebugLoc dl = N->getDebugLoc();
508
509 // If the input is not legal, eg: i1 -> fp, then it needs to be promoted to
510 // a larger type, eg: i8 -> fp. Even if it is legal, no libcall may exactly
511 // match. Look for an appropriate libcall.
512 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
513 for (unsigned t = MVT::FIRST_INTEGER_VALUETYPE;
514 t <= MVT::LAST_INTEGER_VALUETYPE && LC == RTLIB::UNKNOWN_LIBCALL; ++t) {
515 NVT = (MVT::SimpleValueType)t;
516 // The source needs to big enough to hold the operand.
517 if (NVT.bitsGE(SVT))
518 LC = Signed ? RTLIB::getSINTTOFP(NVT, RVT):RTLIB::getUINTTOFP (NVT, RVT);
519 }
520 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
521
522 // Sign/zero extend the argument if the libcall takes a larger type.
523 SDValue Op = DAG.getNode(Signed ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
524 NVT, N->getOperand(0));
525 return MakeLibCall(LC, TLI.getTypeToTransformTo(*DAG.getContext(), RVT), &Op, 1, false, dl);
526 }
527
528
529 //===----------------------------------------------------------------------===//
530 // Operand Float to Integer Conversion..
531 //===----------------------------------------------------------------------===//
532
533 bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) {
534 DEBUG(errs() << "Soften float operand " << OpNo << ": "; N->dump(&DAG);
535 errs() << "\n");
536 SDValue Res = SDValue();
537
538 switch (N->getOpcode()) {
539 default:
540 #ifndef NDEBUG
541 errs() << "SoftenFloatOperand Op #" << OpNo << ": ";
542 N->dump(&DAG); errs() << "\n";
543 #endif
544 llvm_unreachable("Do not know how to soften this operator's operand!");
545
546 case ISD::BIT_CONVERT: Res = SoftenFloatOp_BIT_CONVERT(N); break;
547 case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break;
548 case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break;
549 case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break;
550 case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_UINT(N); break;
551 case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break;
552 case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break;
553 case ISD::STORE: Res = SoftenFloatOp_STORE(N, OpNo); break;
554 }
555
556 // If the result is null, the sub-method took care of registering results etc.
557 if (!Res.getNode()) return false;
558
559 // If the result is N, the sub-method updated N in place. Tell the legalizer
560 // core about this.
561 if (Res.getNode() == N)
562 return true;
563
564 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
565 "Invalid operand expansion");
566
567 ReplaceValueWith(SDValue(N, 0), Res);
568 return false;
569 }
570
571 /// SoftenSetCCOperands - Soften the operands of a comparison. This code is
572 /// shared among BR_CC, SELECT_CC, and SETCC handlers.
573 void DAGTypeLegalizer::SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS,
574 ISD::CondCode &CCCode, DebugLoc dl) {
575 SDValue LHSInt = GetSoftenedFloat(NewLHS);
576 SDValue RHSInt = GetSoftenedFloat(NewRHS);
577 EVT VT = NewLHS.getValueType();
578
579 assert((VT == MVT::f32 || VT == MVT::f64) && "Unsupported setcc type!");
580
581 // Expand into one or more soft-fp libcall(s).
582 RTLIB::Libcall LC1 = RTLIB::UNKNOWN_LIBCALL, LC2 = RTLIB::UNKNOWN_LIBCALL;
583 switch (CCCode) {
584 case ISD::SETEQ:
585 case ISD::SETOEQ:
586 LC1 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : RTLIB::OEQ_F64;
587 break;
588 case ISD::SETNE:
589 case ISD::SETUNE:
590 LC1 = (VT == MVT::f32) ? RTLIB::UNE_F32 : RTLIB::UNE_F64;
591 break;
592 case ISD::SETGE:
593 case ISD::SETOGE:
594 LC1 = (VT == MVT::f32) ? RTLIB::OGE_F32 : RTLIB::OGE_F64;
595 break;
596 case ISD::SETLT:
597 case ISD::SETOLT:
598 LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
599 break;
600 case ISD::SETLE:
601 case ISD::SETOLE:
602 LC1 = (VT == MVT::f32) ? RTLIB::OLE_F32 : RTLIB::OLE_F64;
603 break;
604 case ISD::SETGT:
605 case ISD::SETOGT:
606 LC1 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64;
607 break;
608 case ISD::SETUO:
609 LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64;
610 break;
611 case ISD::SETO:
612 LC1 = (VT == MVT::f32) ? RTLIB::O_F32 : RTLIB::O_F64;
613 break;
614 default:
615 LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64;
616 switch (CCCode) {
617 case ISD::SETONE:
618 // SETONE = SETOLT | SETOGT
619 LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
620 // Fallthrough
621 case ISD::SETUGT:
622 LC2 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64;
623 break;
624 case ISD::SETUGE:
625 LC2 = (VT == MVT::f32) ? RTLIB::OGE_F32 : RTLIB::OGE_F64;
626 break;
627 case ISD::SETULT:
628 LC2 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
629 break;
630 case ISD::SETULE:
631 LC2 = (VT == MVT::f32) ? RTLIB::OLE_F32 : RTLIB::OLE_F64;
632 break;
633 case ISD::SETUEQ:
634 LC2 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : RTLIB::OEQ_F64;
635 break;
636 default: assert(false && "Do not know how to soften this setcc!");
637 }
638 }
639
640 EVT RetVT = MVT::i32; // FIXME: is this the correct return type?
641 SDValue Ops[2] = { LHSInt, RHSInt };
642 NewLHS = MakeLibCall(LC1, RetVT, Ops, 2, false/*sign irrelevant*/, dl);
643 NewRHS = DAG.getConstant(0, RetVT);
644 CCCode = TLI.getCmpLibcallCC(LC1);
645 if (LC2 != RTLIB::UNKNOWN_LIBCALL) {
646 SDValue Tmp = DAG.getNode(ISD::SETCC, dl, TLI.getSetCCResultType(RetVT),
647 NewLHS, NewRHS, DAG.getCondCode(CCCode));
648 NewLHS = MakeLibCall(LC2, RetVT, Ops, 2, false/*sign irrelevant*/, dl);
649 NewLHS = DAG.getNode(ISD::SETCC, dl, TLI.getSetCCResultType(RetVT), NewLHS,
650 NewRHS, DAG.getCondCode(TLI.getCmpLibcallCC(LC2)));
651 NewLHS = DAG.getNode(ISD::OR, dl, Tmp.getValueType(), Tmp, NewLHS);
652 NewRHS = SDValue();
653 }
654 }
655
656 SDValue DAGTypeLegalizer::SoftenFloatOp_BIT_CONVERT(SDNode *N) {
657 return DAG.getNode(ISD::BIT_CONVERT, N->getDebugLoc(), N->getValueType(0),
658 GetSoftenedFloat(N->getOperand(0)));
659 }
660
661 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) {
662 EVT SVT = N->getOperand(0).getValueType();
663 EVT RVT = N->getValueType(0);
664
665 RTLIB::Libcall LC = RTLIB::getFPROUND(SVT, RVT);
666 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND libcall");
667
668 SDValue Op = GetSoftenedFloat(N->getOperand(0));
669 return MakeLibCall(LC, RVT, &Op, 1, false, N->getDebugLoc());
670 }
671
672 SDValue DAGTypeLegalizer::SoftenFloatOp_BR_CC(SDNode *N) {
673 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
674 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
675 SoftenSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc());
676
677 // If SoftenSetCCOperands returned a scalar, we need to compare the result
678 // against zero to select between true and false values.
679 if (NewRHS.getNode() == 0) {
680 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
681 CCCode = ISD::SETNE;
682 }
683
684 // Update N to have the operands specified.
685 return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0),
686 DAG.getCondCode(CCCode), NewLHS, NewRHS,
687 N->getOperand(4));
688 }
689
690 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_SINT(SDNode *N) {
691 EVT RVT = N->getValueType(0);
692 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
693 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
694 SDValue Op = GetSoftenedFloat(N->getOperand(0));
695 return MakeLibCall(LC, RVT, &Op, 1, false, N->getDebugLoc());
696 }
697
698 SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) {
699 EVT RVT = N->getValueType(0);
700 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
701 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
702 SDValue Op = GetSoftenedFloat(N->getOperand(0));
703 return MakeLibCall(LC, RVT, &Op, 1, false, N->getDebugLoc());
704 }
705
706 SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) {
707 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
708 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
709 SoftenSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc());
710
711 // If SoftenSetCCOperands returned a scalar, we need to compare the result
712 // against zero to select between true and false values.
713 if (NewRHS.getNode() == 0) {
714 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
715 CCCode = ISD::SETNE;
716 }
717
718 // Update N to have the operands specified.
719 return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
720 N->getOperand(2), N->getOperand(3),
721 DAG.getCondCode(CCCode));
722 }
723
724 SDValue DAGTypeLegalizer::SoftenFloatOp_SETCC(SDNode *N) {
725 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
726 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
727 SoftenSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc());
728
729 // If SoftenSetCCOperands returned a scalar, use it.
730 if (NewRHS.getNode() == 0) {
731 assert(NewLHS.getValueType() == N->getValueType(0) &&
732 "Unexpected setcc expansion!");
733 return NewLHS;
734 }
735
736 // Otherwise, update N to have the operands specified.
737 return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
738 DAG.getCondCode(CCCode));
739 }
740
741 SDValue DAGTypeLegalizer::SoftenFloatOp_STORE(SDNode *N, unsigned OpNo) {
742 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
743 assert(OpNo == 1 && "Can only soften the stored value!");
744 StoreSDNode *ST = cast<StoreSDNode>(N);
745 SDValue Val = ST->getValue();
746 DebugLoc dl = N->getDebugLoc();
747
748 if (ST->isTruncatingStore())
749 // Do an FP_ROUND followed by a non-truncating store.
750 Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, dl, ST->getMemoryVT(),
751 Val, DAG.getIntPtrConstant(0)));
752 else
753 Val = GetSoftenedFloat(Val);
754
755 return DAG.getStore(ST->getChain(), dl, Val, ST->getBasePtr(),
756 ST->getSrcValue(), ST->getSrcValueOffset(),
757 ST->isVolatile(), ST->getAlignment());
758 }
759
760
761 //===----------------------------------------------------------------------===//
762 // Float Result Expansion
763 //===----------------------------------------------------------------------===//
764
765 /// ExpandFloatResult - This method is called when the specified result of the
766 /// specified node is found to need expansion. At this point, the node may also
767 /// have invalid operands or may have other results that need promotion, we just
768 /// know that (at least) one result needs expansion.
769 void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) {
770 DEBUG(errs() << "Expand float result: "; N->dump(&DAG); errs() << "\n");
771 SDValue Lo, Hi;
772 Lo = Hi = SDValue();
773
774 // See if the target wants to custom expand this node.
775 if (CustomLowerNode(N, N->getValueType(ResNo), true))
776 return;
777
778 switch (N->getOpcode()) {
779 default:
780 #ifndef NDEBUG
781 errs() << "ExpandFloatResult #" << ResNo << ": ";
782 N->dump(&DAG); errs() << "\n";
783 #endif
784 llvm_unreachable("Do not know how to expand the result of this operator!");
785
786 case ISD::MERGE_VALUES: SplitRes_MERGE_VALUES(N, Lo, Hi); break;
787 case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break;
788 case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break;
789 case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break;
790
791 case ISD::BIT_CONVERT: ExpandRes_BIT_CONVERT(N, Lo, Hi); break;
792 case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break;
793 case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break;
794 case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break;
795 case ISD::VAARG: ExpandRes_VAARG(N, Lo, Hi); break;
796
797 case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break;
798 case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break;
799 case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break;
800 case ISD::FCEIL: ExpandFloatRes_FCEIL(N, Lo, Hi); break;
801 case ISD::FCOS: ExpandFloatRes_FCOS(N, Lo, Hi); break;
802 case ISD::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break;
803 case ISD::FEXP: ExpandFloatRes_FEXP(N, Lo, Hi); break;
804 case ISD::FEXP2: ExpandFloatRes_FEXP2(N, Lo, Hi); break;
805 case ISD::FFLOOR: ExpandFloatRes_FFLOOR(N, Lo, Hi); break;
806 case ISD::FLOG: ExpandFloatRes_FLOG(N, Lo, Hi); break;
807 case ISD::FLOG2: ExpandFloatRes_FLOG2(N, Lo, Hi); break;
808 case ISD::FLOG10: ExpandFloatRes_FLOG10(N, Lo, Hi); break;
809 case ISD::FMUL: ExpandFloatRes_FMUL(N, Lo, Hi); break;
810 case ISD::FNEARBYINT: ExpandFloatRes_FNEARBYINT(N, Lo, Hi); break;
811 case ISD::FNEG: ExpandFloatRes_FNEG(N, Lo, Hi); break;
812 case ISD::FP_EXTEND: ExpandFloatRes_FP_EXTEND(N, Lo, Hi); break;
813 case ISD::FPOW: ExpandFloatRes_FPOW(N, Lo, Hi); break;
814 case ISD::FPOWI: ExpandFloatRes_FPOWI(N, Lo, Hi); break;
815 case ISD::FRINT: ExpandFloatRes_FRINT(N, Lo, Hi); break;
816 case ISD::FSIN: ExpandFloatRes_FSIN(N, Lo, Hi); break;
817 case ISD::FSQRT: ExpandFloatRes_FSQRT(N, Lo, Hi); break;
818 case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break;
819 case ISD::FTRUNC: ExpandFloatRes_FTRUNC(N, Lo, Hi); break;
820 case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break;
821 case ISD::SINT_TO_FP:
822 case ISD::UINT_TO_FP: ExpandFloatRes_XINT_TO_FP(N, Lo, Hi); break;
823 }
824
825 // If Lo/Hi is null, the sub-method took care of registering results etc.
826 if (Lo.getNode())
827 SetExpandedFloat(SDValue(N, ResNo), Lo, Hi);
828 }
829
830 void DAGTypeLegalizer::ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo,
831 SDValue &Hi) {
832 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
833 assert(NVT.getSizeInBits() == integerPartWidth &&
834 "Do not know how to expand this float constant!");
835 APInt C = cast<ConstantFPSDNode>(N)->getValueAPF().bitcastToAPInt();
836 Lo = DAG.getConstantFP(APFloat(APInt(integerPartWidth, 1,
837 &C.getRawData()[1])), NVT);
838 Hi = DAG.getConstantFP(APFloat(APInt(integerPartWidth, 1,
839 &C.getRawData()[0])), NVT);
840 }
841
842 void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo,
843 SDValue &Hi) {
844 assert(N->getValueType(0) == MVT::ppcf128 &&
845 "Logic only correct for ppcf128!");
846 DebugLoc dl = N->getDebugLoc();
847 SDValue Tmp;
848 GetExpandedFloat(N->getOperand(0), Lo, Tmp);
849 Hi = DAG.getNode(ISD::FABS, dl, Tmp.getValueType(), Tmp);
850 // Lo = Hi==fabs(Hi) ? Lo : -Lo;
851 Lo = DAG.getNode(ISD::SELECT_CC, dl, Lo.getValueType(), Tmp, Hi, Lo,
852 DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo),
853 DAG.getCondCode(ISD::SETEQ));
854 }
855
856 void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo,
857 SDValue &Hi) {
858 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
859 RTLIB::ADD_F32, RTLIB::ADD_F64,
860 RTLIB::ADD_F80, RTLIB::ADD_PPCF128),
861 N, false);
862 GetPairElements(Call, Lo, Hi);
863 }
864
865 void DAGTypeLegalizer::ExpandFloatRes_FCEIL(SDNode *N,
866 SDValue &Lo, SDValue &Hi) {
867 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
868 RTLIB::CEIL_F32, RTLIB::CEIL_F64,
869 RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128),
870 N, false);
871 GetPairElements(Call, Lo, Hi);
872 }
873
874 void DAGTypeLegalizer::ExpandFloatRes_FCOS(SDNode *N,
875 SDValue &Lo, SDValue &Hi) {
876 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
877 RTLIB::COS_F32, RTLIB::COS_F64,
878 RTLIB::COS_F80, RTLIB::COS_PPCF128),
879 N, false);
880 GetPairElements(Call, Lo, Hi);
881 }
882
883 void DAGTypeLegalizer::ExpandFloatRes_FDIV(SDNode *N, SDValue &Lo,
884 SDValue &Hi) {
885 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
886 SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
887 RTLIB::DIV_F32,
888 RTLIB::DIV_F64,
889 RTLIB::DIV_F80,
890 RTLIB::DIV_PPCF128),
891 N->getValueType(0), Ops, 2, false,
892 N->getDebugLoc());
893 GetPairElements(Call, Lo, Hi);
894 }
895
896 void DAGTypeLegalizer::ExpandFloatRes_FEXP(SDNode *N,
897 SDValue &Lo, SDValue &Hi) {
898 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
899 RTLIB::EXP_F32, RTLIB::EXP_F64,
900 RTLIB::EXP_F80, RTLIB::EXP_PPCF128),
901 N, false);
902 GetPairElements(Call, Lo, Hi);
903 }
904
905 void DAGTypeLegalizer::ExpandFloatRes_FEXP2(SDNode *N,
906 SDValue &Lo, SDValue &Hi) {
907 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
908 RTLIB::EXP2_F32, RTLIB::EXP2_F64,
909 RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128),
910 N, false);
911 GetPairElements(Call, Lo, Hi);
912 }
913
914 void DAGTypeLegalizer::ExpandFloatRes_FFLOOR(SDNode *N,
915 SDValue &Lo, SDValue &Hi) {
916 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
917 RTLIB::FLOOR_F32,RTLIB::FLOOR_F64,
918 RTLIB::FLOOR_F80,RTLIB::FLOOR_PPCF128),
919 N, false);
920 GetPairElements(Call, Lo, Hi);
921 }
922
923 void DAGTypeLegalizer::ExpandFloatRes_FLOG(SDNode *N,
924 SDValue &Lo, SDValue &Hi) {
925 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
926 RTLIB::LOG_F32, RTLIB::LOG_F64,
927 RTLIB::LOG_F80, RTLIB::LOG_PPCF128),
928 N, false);
929 GetPairElements(Call, Lo, Hi);
930 }
931
932 void DAGTypeLegalizer::ExpandFloatRes_FLOG2(SDNode *N,
933 SDValue &Lo, SDValue &Hi) {
934 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
935 RTLIB::LOG2_F32, RTLIB::LOG2_F64,
936 RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128),
937 N, false);
938 GetPairElements(Call, Lo, Hi);
939 }
940
941 void DAGTypeLegalizer::ExpandFloatRes_FLOG10(SDNode *N,
942 SDValue &Lo, SDValue &Hi) {
943 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
944 RTLIB::LOG10_F32,RTLIB::LOG10_F64,
945 RTLIB::LOG10_F80,RTLIB::LOG10_PPCF128),
946 N, false);
947 GetPairElements(Call, Lo, Hi);
948 }
949
950 void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDValue &Lo,
951 SDValue &Hi) {
952 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
953 SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
954 RTLIB::MUL_F32,
955 RTLIB::MUL_F64,
956 RTLIB::MUL_F80,
957 RTLIB::MUL_PPCF128),
958 N->getValueType(0), Ops, 2, false,
959 N->getDebugLoc());
960 GetPairElements(Call, Lo, Hi);
961 }
962
963 void DAGTypeLegalizer::ExpandFloatRes_FNEARBYINT(SDNode *N,
964 SDValue &Lo, SDValue &Hi) {
965 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
966 RTLIB::NEARBYINT_F32,
967 RTLIB::NEARBYINT_F64,
968 RTLIB::NEARBYINT_F80,
969 RTLIB::NEARBYINT_PPCF128),
970 N, false);
971 GetPairElements(Call, Lo, Hi);
972 }
973
974 void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDValue &Lo,
975 SDValue &Hi) {
976 DebugLoc dl = N->getDebugLoc();
977 GetExpandedFloat(N->getOperand(0), Lo, Hi);
978 Lo = DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo);
979 Hi = DAG.getNode(ISD::FNEG, dl, Hi.getValueType(), Hi);
980 }
981
982 void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo,
983 SDValue &Hi) {
984 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
985 Hi = DAG.getNode(ISD::FP_EXTEND, N->getDebugLoc(), NVT, N->getOperand(0));
986 Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
987 }
988
989 void DAGTypeLegalizer::ExpandFloatRes_FPOW(SDNode *N,
990 SDValue &Lo, SDValue &Hi) {
991 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
992 RTLIB::POW_F32, RTLIB::POW_F64,
993 RTLIB::POW_F80, RTLIB::POW_PPCF128),
994 N, false);
995 GetPairElements(Call, Lo, Hi);
996 }
997
998 void DAGTypeLegalizer::ExpandFloatRes_FPOWI(SDNode *N,
999 SDValue &Lo, SDValue &Hi) {
1000 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1001 RTLIB::POWI_F32, RTLIB::POWI_F64,
1002 RTLIB::POWI_F80, RTLIB::POWI_PPCF128),
1003 N, false);
1004 GetPairElements(Call, Lo, Hi);
1005 }
1006
1007 void DAGTypeLegalizer::ExpandFloatRes_FRINT(SDNode *N,
1008 SDValue &Lo, SDValue &Hi) {
1009 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1010 RTLIB::RINT_F32, RTLIB::RINT_F64,
1011 RTLIB::RINT_F80, RTLIB::RINT_PPCF128),
1012 N, false);
1013 GetPairElements(Call, Lo, Hi);
1014 }
1015
1016 void DAGTypeLegalizer::ExpandFloatRes_FSIN(SDNode *N,
1017 SDValue &Lo, SDValue &Hi) {
1018 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1019 RTLIB::SIN_F32, RTLIB::SIN_F64,
1020 RTLIB::SIN_F80, RTLIB::SIN_PPCF128),
1021 N, false);
1022 GetPairElements(Call, Lo, Hi);
1023 }
1024
1025 void DAGTypeLegalizer::ExpandFloatRes_FSQRT(SDNode *N,
1026 SDValue &Lo, SDValue &Hi) {
1027 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1028 RTLIB::SQRT_F32, RTLIB::SQRT_F64,
1029 RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128),
1030 N, false);
1031 GetPairElements(Call, Lo, Hi);
1032 }
1033
1034 void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo,
1035 SDValue &Hi) {
1036 SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
1037 SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
1038 RTLIB::SUB_F32,
1039 RTLIB::SUB_F64,
1040 RTLIB::SUB_F80,
1041 RTLIB::SUB_PPCF128),
1042 N->getValueType(0), Ops, 2, false,
1043 N->getDebugLoc());
1044 GetPairElements(Call, Lo, Hi);
1045 }
1046
1047 void DAGTypeLegalizer::ExpandFloatRes_FTRUNC(SDNode *N,
1048 SDValue &Lo, SDValue &Hi) {
1049 SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
1050 RTLIB::TRUNC_F32, RTLIB::TRUNC_F64,
1051 RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128),
1052 N, false);
1053 GetPairElements(Call, Lo, Hi);
1054 }
1055
1056 void DAGTypeLegalizer::ExpandFloatRes_LOAD(SDNode *N, SDValue &Lo,
1057 SDValue &Hi) {
1058 if (ISD::isNormalLoad(N)) {
1059 ExpandRes_NormalLoad(N, Lo, Hi);
1060 return;
1061 }
1062
1063 assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!");
1064 LoadSDNode *LD = cast<LoadSDNode>(N);
1065 SDValue Chain = LD->getChain();
1066 SDValue Ptr = LD->getBasePtr();
1067 DebugLoc dl = N->getDebugLoc();
1068
1069 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), LD->getValueType(0));
1070 assert(NVT.isByteSized() && "Expanded type not byte sized!");
1071 assert(LD->getMemoryVT().bitsLE(NVT) && "Float type not round?");
1072
1073 Hi = DAG.getExtLoad(LD->getExtensionType(), dl, NVT, Chain, Ptr,
1074 LD->getSrcValue(), LD->getSrcValueOffset(),
1075 LD->getMemoryVT(),
1076 LD->isVolatile(), LD->getAlignment());
1077
1078 // Remember the chain.
1079 Chain = Hi.getValue(1);
1080
1081 // The low part is zero.
1082 Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
1083
1084 // Modified the chain - switch anything that used the old chain to use the
1085 // new one.
1086 ReplaceValueWith(SDValue(LD, 1), Chain);
1087 }
1088
1089 void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo,
1090 SDValue &Hi) {
1091 assert(N->getValueType(0) == MVT::ppcf128 && "Unsupported XINT_TO_FP!");
1092 EVT VT = N->getValueType(0);
1093 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
1094 SDValue Src = N->getOperand(0);
1095 EVT SrcVT = Src.getValueType();
1096 bool isSigned = N->getOpcode() == ISD::SINT_TO_FP;
1097 DebugLoc dl = N->getDebugLoc();
1098
1099 // First do an SINT_TO_FP, whether the original was signed or unsigned.
1100 // When promoting partial word types to i32 we must honor the signedness,
1101 // though.
1102 if (SrcVT.bitsLE(MVT::i32)) {
1103 // The integer can be represented exactly in an f64.
1104 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
1105 MVT::i32, Src);
1106 Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
1107 Hi = DAG.getNode(ISD::SINT_TO_FP, dl, NVT, Src);
1108 } else {
1109 RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
1110 if (SrcVT.bitsLE(MVT::i64)) {
1111 Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
1112 MVT::i64, Src);
1113 LC = RTLIB::SINTTOFP_I64_PPCF128;
1114 } else if (SrcVT.bitsLE(MVT::i128)) {
1115 Src = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i128, Src);
1116 LC = RTLIB::SINTTOFP_I128_PPCF128;
1117 }
1118 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
1119
1120 Hi = MakeLibCall(LC, VT, &Src, 1, true, dl);
1121 GetPairElements(Hi, Lo, Hi);
1122 }
1123
1124 if (isSigned)
1125 return;
1126
1127 // Unsigned - fix up the SINT_TO_FP value just calculated.
1128 Hi = DAG.getNode(ISD::BUILD_PAIR, dl, VT, Lo, Hi);
1129 SrcVT = Src.getValueType();
1130
1131 // x>=0 ? (ppcf128)(iN)x : (ppcf128)(iN)x + 2^N; N=32,64,128.
1132 static const uint64_t TwoE32[] = { 0x41f0000000000000LL, 0 };
1133 static const uint64_t TwoE64[] = { 0x43f0000000000000LL, 0 };
1134 static const uint64_t TwoE128[] = { 0x47f0000000000000LL, 0 };
1135 const uint64_t *Parts = 0;
1136
1137 switch (SrcVT.getSimpleVT().SimpleTy) {
1138 default:
1139 assert(false && "Unsupported UINT_TO_FP!");
1140 case MVT::i32:
1141 Parts = TwoE32;
1142 break;
1143 case MVT::i64:
1144 Parts = TwoE64;
1145 break;
1146 case MVT::i128:
1147 Parts = TwoE128;
1148 break;
1149 }
1150
1151 Lo = DAG.getNode(ISD::FADD, dl, VT, Hi,
1152 DAG.getConstantFP(APFloat(APInt(128, 2, Parts)),
1153 MVT::ppcf128));
1154 Lo = DAG.getNode(ISD::SELECT_CC, dl, VT, Src, DAG.getConstant(0, SrcVT),
1155 Lo, Hi, DAG.getCondCode(ISD::SETLT));
1156 GetPairElements(Lo, Lo, Hi);
1157 }
1158
1159
1160 //===----------------------------------------------------------------------===//
1161 // Float Operand Expansion
1162 //===----------------------------------------------------------------------===//
1163
1164 /// ExpandFloatOperand - This method is called when the specified operand of the
1165 /// specified node is found to need expansion. At this point, all of the result
1166 /// types of the node are known to be legal, but other operands of the node may
1167 /// need promotion or expansion as well as the specified one.
1168 bool DAGTypeLegalizer::ExpandFloatOperand(SDNode *N, unsigned OpNo) {
1169 DEBUG(errs() << "Expand float operand: "; N->dump(&DAG); errs() << "\n");
1170 SDValue Res = SDValue();
1171
1172 if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType())
1173 == TargetLowering::Custom)
1174 Res = TLI.LowerOperation(SDValue(N, 0), DAG);
1175
1176 if (Res.getNode() == 0) {
1177 switch (N->getOpcode()) {
1178 default:
1179 #ifndef NDEBUG
1180 errs() << "ExpandFloatOperand Op #" << OpNo << ": ";
1181 N->dump(&DAG); errs() << "\n";
1182 #endif
1183 llvm_unreachable("Do not know how to expand this operator's operand!");
1184
1185 case ISD::BIT_CONVERT: Res = ExpandOp_BIT_CONVERT(N); break;
1186 case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break;
1187 case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break;
1188
1189 case ISD::BR_CC: Res = ExpandFloatOp_BR_CC(N); break;
1190 case ISD::FP_ROUND: Res = ExpandFloatOp_FP_ROUND(N); break;
1191 case ISD::FP_TO_SINT: Res = ExpandFloatOp_FP_TO_SINT(N); break;
1192 case ISD::FP_TO_UINT: Res = ExpandFloatOp_FP_TO_UINT(N); break;
1193 case ISD::SELECT_CC: Res = ExpandFloatOp_SELECT_CC(N); break;
1194 case ISD::SETCC: Res = ExpandFloatOp_SETCC(N); break;
1195 case ISD::STORE: Res = ExpandFloatOp_STORE(cast<StoreSDNode>(N),
1196 OpNo); break;
1197 }
1198 }
1199
1200 // If the result is null, the sub-method took care of registering results etc.
1201 if (!Res.getNode()) return false;
1202
1203 // If the result is N, the sub-method updated N in place. Tell the legalizer
1204 // core about this.
1205 if (Res.getNode() == N)
1206 return true;
1207
1208 assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
1209 "Invalid operand expansion");
1210
1211 ReplaceValueWith(SDValue(N, 0), Res);
1212 return false;
1213 }
1214
1215 /// FloatExpandSetCCOperands - Expand the operands of a comparison. This code
1216 /// is shared among BR_CC, SELECT_CC, and SETCC handlers.
1217 void DAGTypeLegalizer::FloatExpandSetCCOperands(SDValue &NewLHS,
1218 SDValue &NewRHS,
1219 ISD::CondCode &CCCode,
1220 DebugLoc dl) {
1221 SDValue LHSLo, LHSHi, RHSLo, RHSHi;
1222 GetExpandedFloat(NewLHS, LHSLo, LHSHi);
1223 GetExpandedFloat(NewRHS, RHSLo, RHSHi);
1224
1225 EVT VT = NewLHS.getValueType();
1226 assert(VT == MVT::ppcf128 && "Unsupported setcc type!");
1227
1228 // FIXME: This generated code sucks. We want to generate
1229 // FCMPU crN, hi1, hi2
1230 // BNE crN, L:
1231 // FCMPU crN, lo1, lo2
1232 // The following can be improved, but not that much.
1233 SDValue Tmp1, Tmp2, Tmp3;
1234 Tmp1 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSHi.getValueType()),
1235 LHSHi, RHSHi, ISD::SETOEQ);
1236 Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSLo.getValueType()),
1237 LHSLo, RHSLo, CCCode);
1238 Tmp3 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2);
1239 Tmp1 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSHi.getValueType()),
1240 LHSHi, RHSHi, ISD::SETUNE);
1241 Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSHi.getValueType()),
1242 LHSHi, RHSHi, CCCode);
1243 Tmp1 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2);
1244 NewLHS = DAG.getNode(ISD::OR, dl, Tmp1.getValueType(), Tmp1, Tmp3);
1245 NewRHS = SDValue(); // LHS is the result, not a compare.
1246 }
1247
1248 SDValue DAGTypeLegalizer::ExpandFloatOp_BR_CC(SDNode *N) {
1249 SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
1250 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
1251 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc());
1252
1253 // If ExpandSetCCOperands returned a scalar, we need to compare the result
1254 // against zero to select between true and false values.
1255 if (NewRHS.getNode() == 0) {
1256 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
1257 CCCode = ISD::SETNE;
1258 }
1259
1260 // Update N to have the operands specified.
1261 return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0),
1262 DAG.getCondCode(CCCode), NewLHS, NewRHS,
1263 N->getOperand(4));
1264 }
1265
1266 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_ROUND(SDNode *N) {
1267 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1268 "Logic only correct for ppcf128!");
1269 SDValue Lo, Hi;
1270 GetExpandedFloat(N->getOperand(0), Lo, Hi);
1271 // Round it the rest of the way (e.g. to f32) if needed.
1272 return DAG.getNode(ISD::FP_ROUND, N->getDebugLoc(),
1273 N->getValueType(0), Hi, N->getOperand(1));
1274 }
1275
1276 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) {
1277 EVT RVT = N->getValueType(0);
1278 DebugLoc dl = N->getDebugLoc();
1279
1280 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
1281 // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
1282 if (RVT == MVT::i32) {
1283 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1284 "Logic only correct for ppcf128!");
1285 SDValue Res = DAG.getNode(ISD::FP_ROUND_INREG, dl, MVT::ppcf128,
1286 N->getOperand(0), DAG.getValueType(MVT::f64));
1287 Res = DAG.getNode(ISD::FP_ROUND, dl, MVT::f64, Res,
1288 DAG.getIntPtrConstant(1));
1289 return DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, Res);
1290 }
1291
1292 RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
1293 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
1294 return MakeLibCall(LC, RVT, &N->getOperand(0), 1, false, dl);
1295 }
1296
1297 SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) {
1298 EVT RVT = N->getValueType(0);
1299 DebugLoc dl = N->getDebugLoc();
1300
1301 // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
1302 // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
1303 if (RVT == MVT::i32) {
1304 assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
1305 "Logic only correct for ppcf128!");
1306 const uint64_t TwoE31[] = {0x41e0000000000000LL, 0};
1307 APFloat APF = APFloat(APInt(128, 2, TwoE31));
1308 SDValue Tmp = DAG.getConstantFP(APF, MVT::ppcf128);
1309 // X>=2^31 ? (int)(X-2^31)+0x80000000 : (int)X
1310 // FIXME: generated code sucks.
1311 return DAG.getNode(ISD::SELECT_CC, dl, MVT::i32, N->getOperand(0), Tmp,
1312 DAG.getNode(ISD::ADD, dl, MVT::i32,
1313 DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32,
1314 DAG.getNode(ISD::FSUB, dl,
1315 MVT::ppcf128,
1316 N->getOperand(0),
1317 Tmp)),
1318 DAG.getConstant(0x80000000, MVT::i32)),
1319 DAG.getNode(ISD::FP_TO_SINT, dl,
1320 MVT::i32, N->getOperand(0)),
1321 DAG.getCondCode(ISD::SETGE));
1322 }
1323
1324 RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
1325 assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
1326 return MakeLibCall(LC, N->getValueType(0), &N->getOperand(0), 1, false, dl);
1327 }
1328
1329 SDValue DAGTypeLegalizer::ExpandFloatOp_SELECT_CC(SDNode *N) {
1330 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
1331 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
1332 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc());
1333
1334 // If ExpandSetCCOperands returned a scalar, we need to compare the result
1335 // against zero to select between true and false values.
1336 if (NewRHS.getNode() == 0) {
1337 NewRHS = DAG.getConstant(0, NewLHS.getValueType());
1338 CCCode = ISD::SETNE;
1339 }
1340
1341 // Update N to have the operands specified.
1342 return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
1343 N->getOperand(2), N->getOperand(3),
1344 DAG.getCondCode(CCCode));
1345 }
1346
1347 SDValue DAGTypeLegalizer::ExpandFloatOp_SETCC(SDNode *N) {
1348 SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
1349 ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
1350 FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc());
1351
1352 // If ExpandSetCCOperands returned a scalar, use it.
1353 if (NewRHS.getNode() == 0) {
1354 assert(NewLHS.getValueType() == N->getValueType(0) &&
1355 "Unexpected setcc expansion!");
1356 return NewLHS;
1357 }
1358
1359 // Otherwise, update N to have the operands specified.
1360 return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
1361 DAG.getCondCode(CCCode));
1362 }
1363
1364 SDValue DAGTypeLegalizer::ExpandFloatOp_STORE(SDNode *N, unsigned OpNo) {
1365 if (ISD::isNormalStore(N))
1366 return ExpandOp_NormalStore(N, OpNo);
1367
1368 assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
1369 assert(OpNo == 1 && "Can only expand the stored value so far");
1370 StoreSDNode *ST = cast<StoreSDNode>(N);
1371
1372 SDValue Chain = ST->getChain();
1373 SDValue Ptr = ST->getBasePtr();
1374
1375 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), ST->getValue().getValueType());
1376 assert(NVT.isByteSized() && "Expanded type not byte sized!");
1377 assert(ST->getMemoryVT().bitsLE(NVT) && "Float type not round?");
1378
1379 SDValue Lo, Hi;
1380 GetExpandedOp(ST->getValue(), Lo, Hi);
1381
1382 return DAG.getTruncStore(Chain, N->getDebugLoc(), Hi, Ptr,
1383 ST->getSrcValue(), ST->getSrcValueOffset(),
1384 ST->getMemoryVT(),
1385 ST->isVolatile(), ST->getAlignment());
1386 }
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