1 //===-- SparcISelDAGToDAG.cpp - A dag to dag inst selector for Sparc ------===//
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 defines an instruction selector for the SPARC target.
12 //===----------------------------------------------------------------------===//
15 #include "SparcTargetMachine.h"
16 #include "llvm/DerivedTypes.h"
17 #include "llvm/Function.h"
18 #include "llvm/Intrinsics.h"
19 #include "llvm/CodeGen/MachineFrameInfo.h"
20 #include "llvm/CodeGen/MachineFunction.h"
21 #include "llvm/CodeGen/MachineInstrBuilder.h"
22 #include "llvm/CodeGen/MachineRegisterInfo.h"
23 #include "llvm/CodeGen/SelectionDAG.h"
24 #include "llvm/CodeGen/SelectionDAGISel.h"
25 #include "llvm/Target/TargetLowering.h"
26 #include "llvm/Support/Compiler.h"
27 #include "llvm/Support/Debug.h"
32 //===----------------------------------------------------------------------===//
33 // TargetLowering Implementation
34 //===----------------------------------------------------------------------===//
38 FIRST_NUMBER = ISD::BUILTIN_OP_END+SP::INSTRUCTION_LIST_END,
39 CMPICC, // Compare two GPR operands, set icc.
40 CMPFCC, // Compare two FP operands, set fcc.
41 BRICC, // Branch to dest on icc condition
42 BRFCC, // Branch to dest on fcc condition
43 SELECT_ICC, // Select between two values using the current ICC flags.
44 SELECT_FCC, // Select between two values using the current FCC flags.
46 Hi, Lo, // Hi/Lo operations, typically on a global address.
48 FTOI, // FP to Int within a FP register.
49 ITOF, // Int to FP within a FP register.
51 CALL, // A call instruction.
52 RET_FLAG // Return with a flag operand.
56 /// IntCondCCodeToICC - Convert a DAG integer condition code to a SPARC ICC
58 static SPCC::CondCodes IntCondCCodeToICC(ISD::CondCode CC) {
60 default: assert(0 && "Unknown integer condition code!");
61 case ISD::SETEQ: return SPCC::ICC_E;
62 case ISD::SETNE: return SPCC::ICC_NE;
63 case ISD::SETLT: return SPCC::ICC_L;
64 case ISD::SETGT: return SPCC::ICC_G;
65 case ISD::SETLE: return SPCC::ICC_LE;
66 case ISD::SETGE: return SPCC::ICC_GE;
67 case ISD::SETULT: return SPCC::ICC_CS;
68 case ISD::SETULE: return SPCC::ICC_LEU;
69 case ISD::SETUGT: return SPCC::ICC_GU;
70 case ISD::SETUGE: return SPCC::ICC_CC;
74 /// FPCondCCodeToFCC - Convert a DAG floatingp oint condition code to a SPARC
76 static SPCC::CondCodes FPCondCCodeToFCC(ISD::CondCode CC) {
78 default: assert(0 && "Unknown fp condition code!");
80 case ISD::SETOEQ: return SPCC::FCC_E;
82 case ISD::SETUNE: return SPCC::FCC_NE;
84 case ISD::SETOLT: return SPCC::FCC_L;
86 case ISD::SETOGT: return SPCC::FCC_G;
88 case ISD::SETOLE: return SPCC::FCC_LE;
90 case ISD::SETOGE: return SPCC::FCC_GE;
91 case ISD::SETULT: return SPCC::FCC_UL;
92 case ISD::SETULE: return SPCC::FCC_ULE;
93 case ISD::SETUGT: return SPCC::FCC_UG;
94 case ISD::SETUGE: return SPCC::FCC_UGE;
95 case ISD::SETUO: return SPCC::FCC_U;
96 case ISD::SETO: return SPCC::FCC_O;
97 case ISD::SETONE: return SPCC::FCC_LG;
98 case ISD::SETUEQ: return SPCC::FCC_UE;
103 class SparcTargetLowering : public TargetLowering {
104 int VarArgsFrameOffset; // Frame offset to start of varargs area.
106 SparcTargetLowering(TargetMachine &TM);
107 virtual SDOperand LowerOperation(SDOperand Op, SelectionDAG &DAG);
109 /// computeMaskedBitsForTargetNode - Determine which of the bits specified
110 /// in Mask are known to be either zero or one and return them in the
111 /// KnownZero/KnownOne bitsets.
112 virtual void computeMaskedBitsForTargetNode(const SDOperand Op,
116 const SelectionDAG &DAG,
117 unsigned Depth = 0) const;
119 virtual std::vector<SDOperand>
120 LowerArguments(Function &F, SelectionDAG &DAG);
121 virtual std::pair<SDOperand, SDOperand>
122 LowerCallTo(SDOperand Chain, const Type *RetTy,
123 bool RetSExt, bool RetZExt, bool isVarArg,
124 unsigned CC, bool isTailCall, SDOperand Callee,
125 ArgListTy &Args, SelectionDAG &DAG);
126 virtual MachineBasicBlock *EmitInstrWithCustomInserter(MachineInstr *MI,
127 MachineBasicBlock *MBB);
129 virtual const char *getTargetNodeName(unsigned Opcode) const;
133 SparcTargetLowering::SparcTargetLowering(TargetMachine &TM)
134 : TargetLowering(TM) {
136 // Set up the register classes.
137 addRegisterClass(MVT::i32, SP::IntRegsRegisterClass);
138 addRegisterClass(MVT::f32, SP::FPRegsRegisterClass);
139 addRegisterClass(MVT::f64, SP::DFPRegsRegisterClass);
141 // Turn FP extload into load/fextend
142 setLoadXAction(ISD::EXTLOAD, MVT::f32, Expand);
143 // Sparc doesn't have i1 sign extending load
144 setLoadXAction(ISD::SEXTLOAD, MVT::i1, Promote);
145 // Turn FP truncstore into trunc + store.
146 setTruncStoreAction(MVT::f64, MVT::f32, Expand);
148 // Custom legalize GlobalAddress nodes into LO/HI parts.
149 setOperationAction(ISD::GlobalAddress, MVT::i32, Custom);
150 setOperationAction(ISD::GlobalTLSAddress, MVT::i32, Custom);
151 setOperationAction(ISD::ConstantPool , MVT::i32, Custom);
153 // Sparc doesn't have sext_inreg, replace them with shl/sra
154 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i16, Expand);
155 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i8 , Expand);
156 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1 , Expand);
158 // Sparc has no REM or DIVREM operations.
159 setOperationAction(ISD::UREM, MVT::i32, Expand);
160 setOperationAction(ISD::SREM, MVT::i32, Expand);
161 setOperationAction(ISD::SDIVREM, MVT::i32, Expand);
162 setOperationAction(ISD::UDIVREM, MVT::i32, Expand);
164 // Custom expand fp<->sint
165 setOperationAction(ISD::FP_TO_SINT, MVT::i32, Custom);
166 setOperationAction(ISD::SINT_TO_FP, MVT::i32, Custom);
169 setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand);
170 setOperationAction(ISD::UINT_TO_FP, MVT::i32, Expand);
172 setOperationAction(ISD::BIT_CONVERT, MVT::f32, Expand);
173 setOperationAction(ISD::BIT_CONVERT, MVT::i32, Expand);
175 // Sparc has no select or setcc: expand to SELECT_CC.
176 setOperationAction(ISD::SELECT, MVT::i32, Expand);
177 setOperationAction(ISD::SELECT, MVT::f32, Expand);
178 setOperationAction(ISD::SELECT, MVT::f64, Expand);
179 setOperationAction(ISD::SETCC, MVT::i32, Expand);
180 setOperationAction(ISD::SETCC, MVT::f32, Expand);
181 setOperationAction(ISD::SETCC, MVT::f64, Expand);
183 // Sparc doesn't have BRCOND either, it has BR_CC.
184 setOperationAction(ISD::BRCOND, MVT::Other, Expand);
185 setOperationAction(ISD::BRIND, MVT::Other, Expand);
186 setOperationAction(ISD::BR_JT, MVT::Other, Expand);
187 setOperationAction(ISD::BR_CC, MVT::i32, Custom);
188 setOperationAction(ISD::BR_CC, MVT::f32, Custom);
189 setOperationAction(ISD::BR_CC, MVT::f64, Custom);
191 setOperationAction(ISD::SELECT_CC, MVT::i32, Custom);
192 setOperationAction(ISD::SELECT_CC, MVT::f32, Custom);
193 setOperationAction(ISD::SELECT_CC, MVT::f64, Custom);
195 // SPARC has no intrinsics for these particular operations.
196 setOperationAction(ISD::MEMMOVE, MVT::Other, Expand);
197 setOperationAction(ISD::MEMSET, MVT::Other, Expand);
198 setOperationAction(ISD::MEMCPY, MVT::Other, Expand);
199 setOperationAction(ISD::MEMBARRIER, MVT::Other, Expand);
201 setOperationAction(ISD::FSIN , MVT::f64, Expand);
202 setOperationAction(ISD::FCOS , MVT::f64, Expand);
203 setOperationAction(ISD::FREM , MVT::f64, Expand);
204 setOperationAction(ISD::FSIN , MVT::f32, Expand);
205 setOperationAction(ISD::FCOS , MVT::f32, Expand);
206 setOperationAction(ISD::FREM , MVT::f32, Expand);
207 setOperationAction(ISD::CTPOP, MVT::i32, Expand);
208 setOperationAction(ISD::CTTZ , MVT::i32, Expand);
209 setOperationAction(ISD::CTLZ , MVT::i32, Expand);
210 setOperationAction(ISD::ROTL , MVT::i32, Expand);
211 setOperationAction(ISD::ROTR , MVT::i32, Expand);
212 setOperationAction(ISD::BSWAP, MVT::i32, Expand);
213 setOperationAction(ISD::FCOPYSIGN, MVT::f64, Expand);
214 setOperationAction(ISD::FCOPYSIGN, MVT::f32, Expand);
215 setOperationAction(ISD::FPOW , MVT::f64, Expand);
216 setOperationAction(ISD::FPOW , MVT::f32, Expand);
218 setOperationAction(ISD::SHL_PARTS, MVT::i32, Expand);
219 setOperationAction(ISD::SRA_PARTS, MVT::i32, Expand);
220 setOperationAction(ISD::SRL_PARTS, MVT::i32, Expand);
222 // FIXME: Sparc provides these multiplies, but we don't have them yet.
223 setOperationAction(ISD::UMUL_LOHI, MVT::i32, Expand);
225 // We don't have line number support yet.
226 setOperationAction(ISD::LOCATION, MVT::Other, Expand);
227 setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
228 setOperationAction(ISD::LABEL, MVT::Other, Expand);
230 // RET must be custom lowered, to meet ABI requirements
231 setOperationAction(ISD::RET , MVT::Other, Custom);
233 // VASTART needs to be custom lowered to use the VarArgsFrameIndex.
234 setOperationAction(ISD::VASTART , MVT::Other, Custom);
235 // VAARG needs to be lowered to not do unaligned accesses for doubles.
236 setOperationAction(ISD::VAARG , MVT::Other, Custom);
238 // Use the default implementation.
239 setOperationAction(ISD::VACOPY , MVT::Other, Expand);
240 setOperationAction(ISD::VAEND , MVT::Other, Expand);
241 setOperationAction(ISD::STACKSAVE , MVT::Other, Expand);
242 setOperationAction(ISD::STACKRESTORE , MVT::Other, Expand);
243 setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32 , Custom);
245 setStackPointerRegisterToSaveRestore(SP::O6);
247 if (TM.getSubtarget<SparcSubtarget>().isV9()) {
248 setOperationAction(ISD::CTPOP, MVT::i32, Legal);
251 computeRegisterProperties();
254 const char *SparcTargetLowering::getTargetNodeName(unsigned Opcode) const {
257 case SPISD::CMPICC: return "SPISD::CMPICC";
258 case SPISD::CMPFCC: return "SPISD::CMPFCC";
259 case SPISD::BRICC: return "SPISD::BRICC";
260 case SPISD::BRFCC: return "SPISD::BRFCC";
261 case SPISD::SELECT_ICC: return "SPISD::SELECT_ICC";
262 case SPISD::SELECT_FCC: return "SPISD::SELECT_FCC";
263 case SPISD::Hi: return "SPISD::Hi";
264 case SPISD::Lo: return "SPISD::Lo";
265 case SPISD::FTOI: return "SPISD::FTOI";
266 case SPISD::ITOF: return "SPISD::ITOF";
267 case SPISD::CALL: return "SPISD::CALL";
268 case SPISD::RET_FLAG: return "SPISD::RET_FLAG";
272 /// isMaskedValueZeroForTargetNode - Return true if 'Op & Mask' is known to
273 /// be zero. Op is expected to be a target specific node. Used by DAG
275 void SparcTargetLowering::computeMaskedBitsForTargetNode(const SDOperand Op,
279 const SelectionDAG &DAG,
280 unsigned Depth) const {
281 APInt KnownZero2, KnownOne2;
282 KnownZero = KnownOne = APInt(Mask.getBitWidth(), 0); // Don't know anything.
284 switch (Op.getOpcode()) {
286 case SPISD::SELECT_ICC:
287 case SPISD::SELECT_FCC:
288 DAG.ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne,
290 DAG.ComputeMaskedBits(Op.getOperand(0), Mask, KnownZero2, KnownOne2,
292 assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
293 assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
295 // Only known if known in both the LHS and RHS.
296 KnownOne &= KnownOne2;
297 KnownZero &= KnownZero2;
302 /// LowerArguments - V8 uses a very simple ABI, where all values are passed in
303 /// either one or two GPRs, including FP values. TODO: we should pass FP values
304 /// in FP registers for fastcc functions.
305 std::vector<SDOperand>
306 SparcTargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) {
307 MachineFunction &MF = DAG.getMachineFunction();
308 MachineRegisterInfo &RegInfo = MF.getRegInfo();
309 std::vector<SDOperand> ArgValues;
311 static const unsigned ArgRegs[] = {
312 SP::I0, SP::I1, SP::I2, SP::I3, SP::I4, SP::I5
315 const unsigned *CurArgReg = ArgRegs, *ArgRegEnd = ArgRegs+6;
316 unsigned ArgOffset = 68;
318 SDOperand Root = DAG.getRoot();
319 std::vector<SDOperand> OutChains;
321 for (Function::arg_iterator I = F.arg_begin(), E = F.arg_end(); I != E; ++I) {
322 MVT::ValueType ObjectVT = getValueType(I->getType());
325 default: assert(0 && "Unhandled argument type!");
330 if (I->use_empty()) { // Argument is dead.
331 if (CurArgReg < ArgRegEnd) ++CurArgReg;
332 ArgValues.push_back(DAG.getNode(ISD::UNDEF, ObjectVT));
333 } else if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
334 unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
335 MF.getRegInfo().addLiveIn(*CurArgReg++, VReg);
336 SDOperand Arg = DAG.getCopyFromReg(Root, VReg, MVT::i32);
337 if (ObjectVT != MVT::i32) {
338 unsigned AssertOp = ISD::AssertSext;
339 Arg = DAG.getNode(AssertOp, MVT::i32, Arg,
340 DAG.getValueType(ObjectVT));
341 Arg = DAG.getNode(ISD::TRUNCATE, ObjectVT, Arg);
343 ArgValues.push_back(Arg);
345 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
346 SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
348 if (ObjectVT == MVT::i32) {
349 Load = DAG.getLoad(MVT::i32, Root, FIPtr, NULL, 0);
351 ISD::LoadExtType LoadOp = ISD::SEXTLOAD;
353 // Sparc is big endian, so add an offset based on the ObjectVT.
354 unsigned Offset = 4-std::max(1U, MVT::getSizeInBits(ObjectVT)/8);
355 FIPtr = DAG.getNode(ISD::ADD, MVT::i32, FIPtr,
356 DAG.getConstant(Offset, MVT::i32));
357 Load = DAG.getExtLoad(LoadOp, MVT::i32, Root, FIPtr,
359 Load = DAG.getNode(ISD::TRUNCATE, ObjectVT, Load);
361 ArgValues.push_back(Load);
367 if (I->use_empty()) { // Argument is dead.
368 if (CurArgReg < ArgRegEnd) ++CurArgReg;
369 ArgValues.push_back(DAG.getNode(ISD::UNDEF, ObjectVT));
370 } else if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
371 // FP value is passed in an integer register.
372 unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
373 MF.getRegInfo().addLiveIn(*CurArgReg++, VReg);
374 SDOperand Arg = DAG.getCopyFromReg(Root, VReg, MVT::i32);
376 Arg = DAG.getNode(ISD::BIT_CONVERT, MVT::f32, Arg);
377 ArgValues.push_back(Arg);
379 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
380 SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
381 SDOperand Load = DAG.getLoad(MVT::f32, Root, FIPtr, NULL, 0);
382 ArgValues.push_back(Load);
389 if (I->use_empty()) { // Argument is dead.
390 if (CurArgReg < ArgRegEnd) ++CurArgReg;
391 if (CurArgReg < ArgRegEnd) ++CurArgReg;
392 ArgValues.push_back(DAG.getNode(ISD::UNDEF, ObjectVT));
393 } else if (/* FIXME: Apparently this isn't safe?? */
394 0 && CurArgReg == ArgRegEnd && ObjectVT == MVT::f64 &&
395 ((CurArgReg-ArgRegs) & 1) == 0) {
396 // If this is a double argument and the whole thing lives on the stack,
397 // and the argument is aligned, load the double straight from the stack.
398 // We can't do a load in cases like void foo([6ints], int,double),
399 // because the double wouldn't be aligned!
400 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(8, ArgOffset);
401 SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
402 ArgValues.push_back(DAG.getLoad(MVT::f64, Root, FIPtr, NULL, 0));
405 if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
406 unsigned VRegHi = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
407 MF.getRegInfo().addLiveIn(*CurArgReg++, VRegHi);
408 HiVal = DAG.getCopyFromReg(Root, VRegHi, MVT::i32);
410 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
411 SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
412 HiVal = DAG.getLoad(MVT::i32, Root, FIPtr, NULL, 0);
416 if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
417 unsigned VRegLo = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
418 MF.getRegInfo().addLiveIn(*CurArgReg++, VRegLo);
419 LoVal = DAG.getCopyFromReg(Root, VRegLo, MVT::i32);
421 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset+4);
422 SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
423 LoVal = DAG.getLoad(MVT::i32, Root, FIPtr, NULL, 0);
426 // Compose the two halves together into an i64 unit.
427 SDOperand WholeValue =
428 DAG.getNode(ISD::BUILD_PAIR, MVT::i64, LoVal, HiVal);
430 // If we want a double, do a bit convert.
431 if (ObjectVT == MVT::f64)
432 WholeValue = DAG.getNode(ISD::BIT_CONVERT, MVT::f64, WholeValue);
434 ArgValues.push_back(WholeValue);
441 // Store remaining ArgRegs to the stack if this is a varargs function.
442 if (F.getFunctionType()->isVarArg()) {
443 // Remember the vararg offset for the va_start implementation.
444 VarArgsFrameOffset = ArgOffset;
446 for (; CurArgReg != ArgRegEnd; ++CurArgReg) {
447 unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
448 MF.getRegInfo().addLiveIn(*CurArgReg, VReg);
449 SDOperand Arg = DAG.getCopyFromReg(DAG.getRoot(), VReg, MVT::i32);
451 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
452 SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
454 OutChains.push_back(DAG.getStore(DAG.getRoot(), Arg, FIPtr, NULL, 0));
459 if (!OutChains.empty())
460 DAG.setRoot(DAG.getNode(ISD::TokenFactor, MVT::Other,
461 &OutChains[0], OutChains.size()));
463 // Finally, inform the code generator which regs we return values in.
464 switch (getValueType(F.getReturnType())) {
465 default: assert(0 && "Unknown type!");
466 case MVT::isVoid: break;
471 MF.getRegInfo().addLiveOut(SP::I0);
474 MF.getRegInfo().addLiveOut(SP::I0);
475 MF.getRegInfo().addLiveOut(SP::I1);
478 MF.getRegInfo().addLiveOut(SP::F0);
481 MF.getRegInfo().addLiveOut(SP::D0);
488 std::pair<SDOperand, SDOperand>
489 SparcTargetLowering::LowerCallTo(SDOperand Chain, const Type *RetTy,
490 bool RetSExt, bool RetZExt, bool isVarArg,
491 unsigned CC, bool isTailCall, SDOperand Callee,
492 ArgListTy &Args, SelectionDAG &DAG) {
493 // Count the size of the outgoing arguments.
494 unsigned ArgsSize = 0;
495 for (unsigned i = 0, e = Args.size(); i != e; ++i) {
496 switch (getValueType(Args[i].Ty)) {
497 default: assert(0 && "Unknown value type!");
512 ArgsSize -= 4*6; // Space for first 6 arguments is prereserved.
516 // Keep stack frames 8-byte aligned.
517 ArgsSize = (ArgsSize+7) & ~7;
519 Chain = DAG.getCALLSEQ_START(Chain,DAG.getConstant(ArgsSize, getPointerTy()));
522 std::vector<SDOperand> Stores;
523 std::vector<SDOperand> RegValuesToPass;
524 unsigned ArgOffset = 68;
525 for (unsigned i = 0, e = Args.size(); i != e; ++i) {
526 SDOperand Val = Args[i].Node;
527 MVT::ValueType ObjectVT = Val.getValueType();
528 SDOperand ValToStore(0, 0);
531 default: assert(0 && "Unhandled argument type!");
535 // Promote the integer to 32-bits. If the input type is signed, use a
536 // sign extend, otherwise use a zero extend.
537 ISD::NodeType ExtendKind = ISD::ANY_EXTEND;
539 ExtendKind = ISD::SIGN_EXTEND;
540 else if (Args[i].isZExt)
541 ExtendKind = ISD::ZERO_EXTEND;
542 Val = DAG.getNode(ExtendKind, MVT::i32, Val);
548 if (RegValuesToPass.size() >= 6) {
551 RegValuesToPass.push_back(Val);
556 if (RegValuesToPass.size() >= 6) {
559 // Convert this to a FP value in an int reg.
560 Val = DAG.getNode(ISD::BIT_CONVERT, MVT::i32, Val);
561 RegValuesToPass.push_back(Val);
566 // If we can store this directly into the outgoing slot, do so. We can
567 // do this when all ArgRegs are used and if the outgoing slot is aligned.
568 // FIXME: McGill/misr fails with this.
569 if (0 && RegValuesToPass.size() >= 6 && ((ArgOffset-68) & 7) == 0) {
574 // Otherwise, convert this to a FP value in int regs.
575 Val = DAG.getNode(ISD::BIT_CONVERT, MVT::i64, Val);
579 if (RegValuesToPass.size() >= 6) {
580 ValToStore = Val; // Whole thing is passed in memory.
584 // Split the value into top and bottom part. Top part goes in a reg.
585 SDOperand Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, getPointerTy(), Val,
586 DAG.getConstant(1, MVT::i32));
587 SDOperand Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, getPointerTy(), Val,
588 DAG.getConstant(0, MVT::i32));
589 RegValuesToPass.push_back(Hi);
591 if (RegValuesToPass.size() >= 6) {
596 RegValuesToPass.push_back(Lo);
601 if (ValToStore.Val) {
603 StackPtr = DAG.getRegister(SP::O6, MVT::i32);
605 SDOperand PtrOff = DAG.getConstant(ArgOffset, getPointerTy());
606 PtrOff = DAG.getNode(ISD::ADD, MVT::i32, StackPtr, PtrOff);
607 Stores.push_back(DAG.getStore(Chain, ValToStore, PtrOff, NULL, 0));
609 ArgOffset += ObjSize;
612 // Emit all stores, make sure the occur before any copies into physregs.
614 Chain = DAG.getNode(ISD::TokenFactor, MVT::Other, &Stores[0],Stores.size());
616 static const unsigned ArgRegs[] = {
617 SP::O0, SP::O1, SP::O2, SP::O3, SP::O4, SP::O5
620 // Build a sequence of copy-to-reg nodes chained together with token chain
621 // and flag operands which copy the outgoing args into O[0-5].
623 for (unsigned i = 0, e = RegValuesToPass.size(); i != e; ++i) {
624 Chain = DAG.getCopyToReg(Chain, ArgRegs[i], RegValuesToPass[i], InFlag);
625 InFlag = Chain.getValue(1);
628 // If the callee is a GlobalAddress node (quite common, every direct call is)
629 // turn it into a TargetGlobalAddress node so that legalize doesn't hack it.
630 // Likewise ExternalSymbol -> TargetExternalSymbol.
631 if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
632 Callee = DAG.getTargetGlobalAddress(G->getGlobal(), MVT::i32);
633 else if (ExternalSymbolSDNode *E = dyn_cast<ExternalSymbolSDNode>(Callee))
634 Callee = DAG.getTargetExternalSymbol(E->getSymbol(), MVT::i32);
636 std::vector<MVT::ValueType> NodeTys;
637 NodeTys.push_back(MVT::Other); // Returns a chain
638 NodeTys.push_back(MVT::Flag); // Returns a flag for retval copy to use.
639 SDOperand Ops[] = { Chain, Callee, InFlag };
640 Chain = DAG.getNode(SPISD::CALL, NodeTys, Ops, InFlag.Val ? 3 : 2);
641 InFlag = Chain.getValue(1);
643 MVT::ValueType RetTyVT = getValueType(RetTy);
645 if (RetTyVT != MVT::isVoid) {
647 default: assert(0 && "Unknown value type to return!");
651 RetVal = DAG.getCopyFromReg(Chain, SP::O0, MVT::i32, InFlag);
652 Chain = RetVal.getValue(1);
654 // Add a note to keep track of whether it is sign or zero extended.
655 ISD::NodeType AssertKind = ISD::DELETED_NODE;
657 AssertKind = ISD::AssertSext;
659 AssertKind = ISD::AssertZext;
661 if (AssertKind != ISD::DELETED_NODE)
662 RetVal = DAG.getNode(AssertKind, MVT::i32, RetVal,
663 DAG.getValueType(RetTyVT));
665 RetVal = DAG.getNode(ISD::TRUNCATE, RetTyVT, RetVal);
669 RetVal = DAG.getCopyFromReg(Chain, SP::O0, MVT::i32, InFlag);
670 Chain = RetVal.getValue(1);
673 RetVal = DAG.getCopyFromReg(Chain, SP::F0, MVT::f32, InFlag);
674 Chain = RetVal.getValue(1);
677 RetVal = DAG.getCopyFromReg(Chain, SP::D0, MVT::f64, InFlag);
678 Chain = RetVal.getValue(1);
681 SDOperand Lo = DAG.getCopyFromReg(Chain, SP::O1, MVT::i32, InFlag);
682 SDOperand Hi = DAG.getCopyFromReg(Lo.getValue(1), SP::O0, MVT::i32,
684 RetVal = DAG.getNode(ISD::BUILD_PAIR, MVT::i64, Lo, Hi);
685 Chain = Hi.getValue(1);
690 Chain = DAG.getCALLSEQ_END(Chain,
691 DAG.getConstant(ArgsSize, getPointerTy()),
692 DAG.getConstant(0, getPointerTy()),
694 return std::make_pair(RetVal, Chain);
697 // Look at LHS/RHS/CC and see if they are a lowered setcc instruction. If so
698 // set LHS/RHS and SPCC to the LHS/RHS of the setcc and SPCC to the condition.
699 static void LookThroughSetCC(SDOperand &LHS, SDOperand &RHS,
700 ISD::CondCode CC, unsigned &SPCC) {
701 if (isa<ConstantSDNode>(RHS) && cast<ConstantSDNode>(RHS)->getValue() == 0 &&
703 ((LHS.getOpcode() == SPISD::SELECT_ICC &&
704 LHS.getOperand(3).getOpcode() == SPISD::CMPICC) ||
705 (LHS.getOpcode() == SPISD::SELECT_FCC &&
706 LHS.getOperand(3).getOpcode() == SPISD::CMPFCC)) &&
707 isa<ConstantSDNode>(LHS.getOperand(0)) &&
708 isa<ConstantSDNode>(LHS.getOperand(1)) &&
709 cast<ConstantSDNode>(LHS.getOperand(0))->getValue() == 1 &&
710 cast<ConstantSDNode>(LHS.getOperand(1))->getValue() == 0) {
711 SDOperand CMPCC = LHS.getOperand(3);
712 SPCC = cast<ConstantSDNode>(LHS.getOperand(2))->getValue();
713 LHS = CMPCC.getOperand(0);
714 RHS = CMPCC.getOperand(1);
719 SDOperand SparcTargetLowering::
720 LowerOperation(SDOperand Op, SelectionDAG &DAG) {
721 switch (Op.getOpcode()) {
722 default: assert(0 && "Should not custom lower this!");
723 case ISD::GlobalTLSAddress:
724 assert(0 && "TLS not implemented for Sparc.");
725 case ISD::GlobalAddress: {
726 GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
727 SDOperand GA = DAG.getTargetGlobalAddress(GV, MVT::i32);
728 SDOperand Hi = DAG.getNode(SPISD::Hi, MVT::i32, GA);
729 SDOperand Lo = DAG.getNode(SPISD::Lo, MVT::i32, GA);
730 return DAG.getNode(ISD::ADD, MVT::i32, Lo, Hi);
732 case ISD::ConstantPool: {
733 Constant *C = cast<ConstantPoolSDNode>(Op)->getConstVal();
734 SDOperand CP = DAG.getTargetConstantPool(C, MVT::i32,
735 cast<ConstantPoolSDNode>(Op)->getAlignment());
736 SDOperand Hi = DAG.getNode(SPISD::Hi, MVT::i32, CP);
737 SDOperand Lo = DAG.getNode(SPISD::Lo, MVT::i32, CP);
738 return DAG.getNode(ISD::ADD, MVT::i32, Lo, Hi);
740 case ISD::FP_TO_SINT:
741 // Convert the fp value to integer in an FP register.
742 assert(Op.getValueType() == MVT::i32);
743 Op = DAG.getNode(SPISD::FTOI, MVT::f32, Op.getOperand(0));
744 return DAG.getNode(ISD::BIT_CONVERT, MVT::i32, Op);
745 case ISD::SINT_TO_FP: {
746 assert(Op.getOperand(0).getValueType() == MVT::i32);
747 SDOperand Tmp = DAG.getNode(ISD::BIT_CONVERT, MVT::f32, Op.getOperand(0));
748 // Convert the int value to FP in an FP register.
749 return DAG.getNode(SPISD::ITOF, Op.getValueType(), Tmp);
752 SDOperand Chain = Op.getOperand(0);
753 ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(1))->get();
754 SDOperand LHS = Op.getOperand(2);
755 SDOperand RHS = Op.getOperand(3);
756 SDOperand Dest = Op.getOperand(4);
757 unsigned Opc, SPCC = ~0U;
759 // If this is a br_cc of a "setcc", and if the setcc got lowered into
760 // an CMP[IF]CC/SELECT_[IF]CC pair, find the original compared values.
761 LookThroughSetCC(LHS, RHS, CC, SPCC);
763 // Get the condition flag.
764 SDOperand CompareFlag;
765 if (LHS.getValueType() == MVT::i32) {
766 std::vector<MVT::ValueType> VTs;
767 VTs.push_back(MVT::i32);
768 VTs.push_back(MVT::Flag);
769 SDOperand Ops[2] = { LHS, RHS };
770 CompareFlag = DAG.getNode(SPISD::CMPICC, VTs, Ops, 2).getValue(1);
771 if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);
774 CompareFlag = DAG.getNode(SPISD::CMPFCC, MVT::Flag, LHS, RHS);
775 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
778 return DAG.getNode(Opc, MVT::Other, Chain, Dest,
779 DAG.getConstant(SPCC, MVT::i32), CompareFlag);
781 case ISD::SELECT_CC: {
782 SDOperand LHS = Op.getOperand(0);
783 SDOperand RHS = Op.getOperand(1);
784 ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(4))->get();
785 SDOperand TrueVal = Op.getOperand(2);
786 SDOperand FalseVal = Op.getOperand(3);
787 unsigned Opc, SPCC = ~0U;
789 // If this is a select_cc of a "setcc", and if the setcc got lowered into
790 // an CMP[IF]CC/SELECT_[IF]CC pair, find the original compared values.
791 LookThroughSetCC(LHS, RHS, CC, SPCC);
793 SDOperand CompareFlag;
794 if (LHS.getValueType() == MVT::i32) {
795 std::vector<MVT::ValueType> VTs;
796 VTs.push_back(LHS.getValueType()); // subcc returns a value
797 VTs.push_back(MVT::Flag);
798 SDOperand Ops[2] = { LHS, RHS };
799 CompareFlag = DAG.getNode(SPISD::CMPICC, VTs, Ops, 2).getValue(1);
800 Opc = SPISD::SELECT_ICC;
801 if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);
803 CompareFlag = DAG.getNode(SPISD::CMPFCC, MVT::Flag, LHS, RHS);
804 Opc = SPISD::SELECT_FCC;
805 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
807 return DAG.getNode(Opc, TrueVal.getValueType(), TrueVal, FalseVal,
808 DAG.getConstant(SPCC, MVT::i32), CompareFlag);
811 // vastart just stores the address of the VarArgsFrameIndex slot into the
812 // memory location argument.
813 SDOperand Offset = DAG.getNode(ISD::ADD, MVT::i32,
814 DAG.getRegister(SP::I6, MVT::i32),
815 DAG.getConstant(VarArgsFrameOffset, MVT::i32));
816 const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
817 return DAG.getStore(Op.getOperand(0), Offset, Op.getOperand(1), SV, 0);
820 SDNode *Node = Op.Val;
821 MVT::ValueType VT = Node->getValueType(0);
822 SDOperand InChain = Node->getOperand(0);
823 SDOperand VAListPtr = Node->getOperand(1);
824 const Value *SV = cast<SrcValueSDNode>(Node->getOperand(2))->getValue();
825 SDOperand VAList = DAG.getLoad(getPointerTy(), InChain, VAListPtr, SV, 0);
826 // Increment the pointer, VAList, to the next vaarg
827 SDOperand NextPtr = DAG.getNode(ISD::ADD, getPointerTy(), VAList,
828 DAG.getConstant(MVT::getSizeInBits(VT)/8,
830 // Store the incremented VAList to the legalized pointer
831 InChain = DAG.getStore(VAList.getValue(1), NextPtr,
833 // Load the actual argument out of the pointer VAList, unless this is an
835 if (VT != MVT::f64) {
836 return DAG.getLoad(VT, InChain, VAList, NULL, 0);
838 // Otherwise, load it as i64, then do a bitconvert.
839 SDOperand V = DAG.getLoad(MVT::i64, InChain, VAList, NULL, 0);
840 std::vector<MVT::ValueType> Tys;
841 Tys.push_back(MVT::f64);
842 Tys.push_back(MVT::Other);
843 // Bit-Convert the value to f64.
844 SDOperand Ops[2] = { DAG.getNode(ISD::BIT_CONVERT, MVT::f64, V),
846 return DAG.getNode(ISD::MERGE_VALUES, Tys, Ops, 2);
849 case ISD::DYNAMIC_STACKALLOC: {
850 SDOperand Chain = Op.getOperand(0); // Legalize the chain.
851 SDOperand Size = Op.getOperand(1); // Legalize the size.
853 unsigned SPReg = SP::O6;
854 SDOperand SP = DAG.getCopyFromReg(Chain, SPReg, MVT::i32);
855 SDOperand NewSP = DAG.getNode(ISD::SUB, MVT::i32, SP, Size); // Value
856 Chain = DAG.getCopyToReg(SP.getValue(1), SPReg, NewSP); // Output chain
858 // The resultant pointer is actually 16 words from the bottom of the stack,
859 // to provide a register spill area.
860 SDOperand NewVal = DAG.getNode(ISD::ADD, MVT::i32, NewSP,
861 DAG.getConstant(96, MVT::i32));
862 std::vector<MVT::ValueType> Tys;
863 Tys.push_back(MVT::i32);
864 Tys.push_back(MVT::Other);
865 SDOperand Ops[2] = { NewVal, Chain };
866 return DAG.getNode(ISD::MERGE_VALUES, Tys, Ops, 2);
871 switch(Op.getNumOperands()) {
873 assert(0 && "Do not know how to return this many arguments!");
876 return SDOperand(); // ret void is legal
879 switch(Op.getOperand(1).getValueType()) {
880 default: assert(0 && "Unknown type to return!");
881 case MVT::i32: ArgReg = SP::I0; break;
882 case MVT::f32: ArgReg = SP::F0; break;
883 case MVT::f64: ArgReg = SP::D0; break;
885 Copy = DAG.getCopyToReg(Op.getOperand(0), ArgReg, Op.getOperand(1),
890 Copy = DAG.getCopyToReg(Op.getOperand(0), SP::I0, Op.getOperand(3),
892 Copy = DAG.getCopyToReg(Copy, SP::I1, Op.getOperand(1), Copy.getValue(1));
895 return DAG.getNode(SPISD::RET_FLAG, MVT::Other, Copy, Copy.getValue(1));
897 // Frame & Return address. Currently unimplemented
898 case ISD::RETURNADDR: break;
899 case ISD::FRAMEADDR: break;
905 SparcTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
906 MachineBasicBlock *BB) {
907 const TargetInstrInfo &TII = *getTargetMachine().getInstrInfo();
910 // Figure out the conditional branch opcode to use for this select_cc.
911 switch (MI->getOpcode()) {
912 default: assert(0 && "Unknown SELECT_CC!");
913 case SP::SELECT_CC_Int_ICC:
914 case SP::SELECT_CC_FP_ICC:
915 case SP::SELECT_CC_DFP_ICC:
916 BROpcode = SP::BCOND;
918 case SP::SELECT_CC_Int_FCC:
919 case SP::SELECT_CC_FP_FCC:
920 case SP::SELECT_CC_DFP_FCC:
921 BROpcode = SP::FBCOND;
925 CC = (SPCC::CondCodes)MI->getOperand(3).getImm();
927 // To "insert" a SELECT_CC instruction, we actually have to insert the diamond
928 // control-flow pattern. The incoming instruction knows the destination vreg
929 // to set, the condition code register to branch on, the true/false values to
930 // select between, and a branch opcode to use.
931 const BasicBlock *LLVM_BB = BB->getBasicBlock();
932 ilist<MachineBasicBlock>::iterator It = BB;
939 // fallthrough --> copy0MBB
940 MachineBasicBlock *thisMBB = BB;
941 MachineBasicBlock *copy0MBB = new MachineBasicBlock(LLVM_BB);
942 MachineBasicBlock *sinkMBB = new MachineBasicBlock(LLVM_BB);
943 BuildMI(BB, TII.get(BROpcode)).addMBB(sinkMBB).addImm(CC);
944 MachineFunction *F = BB->getParent();
945 F->getBasicBlockList().insert(It, copy0MBB);
946 F->getBasicBlockList().insert(It, sinkMBB);
947 // Update machine-CFG edges by first adding all successors of the current
948 // block to the new block which will contain the Phi node for the select.
949 for(MachineBasicBlock::succ_iterator i = BB->succ_begin(),
950 e = BB->succ_end(); i != e; ++i)
951 sinkMBB->addSuccessor(*i);
952 // Next, remove all successors of the current block, and add the true
953 // and fallthrough blocks as its successors.
954 while(!BB->succ_empty())
955 BB->removeSuccessor(BB->succ_begin());
956 BB->addSuccessor(copy0MBB);
957 BB->addSuccessor(sinkMBB);
961 // # fallthrough to sinkMBB
964 // Update machine-CFG edges
965 BB->addSuccessor(sinkMBB);
968 // %Result = phi [ %FalseValue, copy0MBB ], [ %TrueValue, thisMBB ]
971 BuildMI(BB, TII.get(SP::PHI), MI->getOperand(0).getReg())
972 .addReg(MI->getOperand(2).getReg()).addMBB(copy0MBB)
973 .addReg(MI->getOperand(1).getReg()).addMBB(thisMBB);
975 delete MI; // The pseudo instruction is gone now.
979 //===----------------------------------------------------------------------===//
980 // Instruction Selector Implementation
981 //===----------------------------------------------------------------------===//
983 //===--------------------------------------------------------------------===//
984 /// SparcDAGToDAGISel - SPARC specific code to select SPARC machine
985 /// instructions for SelectionDAG operations.
988 class SparcDAGToDAGISel : public SelectionDAGISel {
989 SparcTargetLowering Lowering;
991 /// Subtarget - Keep a pointer to the Sparc Subtarget around so that we can
992 /// make the right decision when generating code for different targets.
993 const SparcSubtarget &Subtarget;
995 SparcDAGToDAGISel(TargetMachine &TM)
996 : SelectionDAGISel(Lowering), Lowering(TM),
997 Subtarget(TM.getSubtarget<SparcSubtarget>()) {
1000 SDNode *Select(SDOperand Op);
1002 // Complex Pattern Selectors.
1003 bool SelectADDRrr(SDOperand Op, SDOperand N, SDOperand &R1, SDOperand &R2);
1004 bool SelectADDRri(SDOperand Op, SDOperand N, SDOperand &Base,
1007 /// InstructionSelectBasicBlock - This callback is invoked by
1008 /// SelectionDAGISel when it has created a SelectionDAG for us to codegen.
1009 virtual void InstructionSelectBasicBlock(SelectionDAG &DAG);
1011 virtual const char *getPassName() const {
1012 return "SPARC DAG->DAG Pattern Instruction Selection";
1015 // Include the pieces autogenerated from the target description.
1016 #include "SparcGenDAGISel.inc"
1018 } // end anonymous namespace
1020 /// InstructionSelectBasicBlock - This callback is invoked by
1021 /// SelectionDAGISel when it has created a SelectionDAG for us to codegen.
1022 void SparcDAGToDAGISel::InstructionSelectBasicBlock(SelectionDAG &DAG) {
1025 // Select target instructions for the DAG.
1026 DAG.setRoot(SelectRoot(DAG.getRoot()));
1027 DAG.RemoveDeadNodes();
1029 // Emit machine code to BB.
1030 ScheduleAndEmitDAG(DAG);
1033 bool SparcDAGToDAGISel::SelectADDRri(SDOperand Op, SDOperand Addr,
1034 SDOperand &Base, SDOperand &Offset) {
1035 if (FrameIndexSDNode *FIN = dyn_cast<FrameIndexSDNode>(Addr)) {
1036 Base = CurDAG->getTargetFrameIndex(FIN->getIndex(), MVT::i32);
1037 Offset = CurDAG->getTargetConstant(0, MVT::i32);
1040 if (Addr.getOpcode() == ISD::TargetExternalSymbol ||
1041 Addr.getOpcode() == ISD::TargetGlobalAddress)
1042 return false; // direct calls.
1044 if (Addr.getOpcode() == ISD::ADD) {
1045 if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(Addr.getOperand(1))) {
1046 if (Predicate_simm13(CN)) {
1047 if (FrameIndexSDNode *FIN =
1048 dyn_cast<FrameIndexSDNode>(Addr.getOperand(0))) {
1049 // Constant offset from frame ref.
1050 Base = CurDAG->getTargetFrameIndex(FIN->getIndex(), MVT::i32);
1052 Base = Addr.getOperand(0);
1054 Offset = CurDAG->getTargetConstant(CN->getValue(), MVT::i32);
1058 if (Addr.getOperand(0).getOpcode() == SPISD::Lo) {
1059 Base = Addr.getOperand(1);
1060 Offset = Addr.getOperand(0).getOperand(0);
1063 if (Addr.getOperand(1).getOpcode() == SPISD::Lo) {
1064 Base = Addr.getOperand(0);
1065 Offset = Addr.getOperand(1).getOperand(0);
1070 Offset = CurDAG->getTargetConstant(0, MVT::i32);
1074 bool SparcDAGToDAGISel::SelectADDRrr(SDOperand Op, SDOperand Addr,
1075 SDOperand &R1, SDOperand &R2) {
1076 if (Addr.getOpcode() == ISD::FrameIndex) return false;
1077 if (Addr.getOpcode() == ISD::TargetExternalSymbol ||
1078 Addr.getOpcode() == ISD::TargetGlobalAddress)
1079 return false; // direct calls.
1081 if (Addr.getOpcode() == ISD::ADD) {
1082 if (isa<ConstantSDNode>(Addr.getOperand(1)) &&
1083 Predicate_simm13(Addr.getOperand(1).Val))
1084 return false; // Let the reg+imm pattern catch this!
1085 if (Addr.getOperand(0).getOpcode() == SPISD::Lo ||
1086 Addr.getOperand(1).getOpcode() == SPISD::Lo)
1087 return false; // Let the reg+imm pattern catch this!
1088 R1 = Addr.getOperand(0);
1089 R2 = Addr.getOperand(1);
1094 R2 = CurDAG->getRegister(SP::G0, MVT::i32);
1098 SDNode *SparcDAGToDAGISel::Select(SDOperand Op) {
1100 if (N->getOpcode() >= ISD::BUILTIN_OP_END &&
1101 N->getOpcode() < SPISD::FIRST_NUMBER)
1102 return NULL; // Already selected.
1104 switch (N->getOpcode()) {
1108 // FIXME: should use a custom expander to expose the SRA to the dag.
1109 SDOperand DivLHS = N->getOperand(0);
1110 SDOperand DivRHS = N->getOperand(1);
1111 AddToISelQueue(DivLHS);
1112 AddToISelQueue(DivRHS);
1114 // Set the Y register to the high-part.
1116 if (N->getOpcode() == ISD::SDIV) {
1117 TopPart = SDOperand(CurDAG->getTargetNode(SP::SRAri, MVT::i32, DivLHS,
1118 CurDAG->getTargetConstant(31, MVT::i32)), 0);
1120 TopPart = CurDAG->getRegister(SP::G0, MVT::i32);
1122 TopPart = SDOperand(CurDAG->getTargetNode(SP::WRYrr, MVT::Flag, TopPart,
1123 CurDAG->getRegister(SP::G0, MVT::i32)), 0);
1125 // FIXME: Handle div by immediate.
1126 unsigned Opcode = N->getOpcode() == ISD::SDIV ? SP::SDIVrr : SP::UDIVrr;
1127 return CurDAG->SelectNodeTo(N, Opcode, MVT::i32, DivLHS, DivRHS,
1132 // FIXME: Handle mul by immediate.
1133 SDOperand MulLHS = N->getOperand(0);
1134 SDOperand MulRHS = N->getOperand(1);
1135 AddToISelQueue(MulLHS);
1136 AddToISelQueue(MulRHS);
1137 unsigned Opcode = N->getOpcode() == ISD::MULHU ? SP::UMULrr : SP::SMULrr;
1138 SDNode *Mul = CurDAG->getTargetNode(Opcode, MVT::i32, MVT::Flag,
1140 // The high part is in the Y register.
1141 return CurDAG->SelectNodeTo(N, SP::RDY, MVT::i32, SDOperand(Mul, 1));
1146 return SelectCode(Op);
1150 /// createSparcISelDag - This pass converts a legalized DAG into a
1151 /// SPARC-specific DAG, ready for instruction scheduling.
1153 FunctionPass *llvm::createSparcISelDag(TargetMachine &TM) {
1154 return new SparcDAGToDAGISel(TM);