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);
144 // Sparc doesn't have i1 sign extending load
145 setLoadXAction(ISD::SEXTLOAD, MVT::i1, Promote);
147 // Custom legalize GlobalAddress nodes into LO/HI parts.
148 setOperationAction(ISD::GlobalAddress, MVT::i32, Custom);
149 setOperationAction(ISD::GlobalTLSAddress, MVT::i32, Custom);
150 setOperationAction(ISD::ConstantPool , MVT::i32, Custom);
152 // Sparc doesn't have sext_inreg, replace them with shl/sra
153 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i16, Expand);
154 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i8 , Expand);
155 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1 , Expand);
157 // Sparc has no REM or DIVREM operations.
158 setOperationAction(ISD::UREM, MVT::i32, Expand);
159 setOperationAction(ISD::SREM, MVT::i32, Expand);
160 setOperationAction(ISD::SDIVREM, MVT::i32, Expand);
161 setOperationAction(ISD::UDIVREM, MVT::i32, Expand);
163 // Custom expand fp<->sint
164 setOperationAction(ISD::FP_TO_SINT, MVT::i32, Custom);
165 setOperationAction(ISD::SINT_TO_FP, MVT::i32, Custom);
168 setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand);
169 setOperationAction(ISD::UINT_TO_FP, MVT::i32, Expand);
171 setOperationAction(ISD::BIT_CONVERT, MVT::f32, Expand);
172 setOperationAction(ISD::BIT_CONVERT, MVT::i32, Expand);
174 // Sparc has no select or setcc: expand to SELECT_CC.
175 setOperationAction(ISD::SELECT, MVT::i32, Expand);
176 setOperationAction(ISD::SELECT, MVT::f32, Expand);
177 setOperationAction(ISD::SELECT, MVT::f64, Expand);
178 setOperationAction(ISD::SETCC, MVT::i32, Expand);
179 setOperationAction(ISD::SETCC, MVT::f32, Expand);
180 setOperationAction(ISD::SETCC, MVT::f64, Expand);
182 // Sparc doesn't have BRCOND either, it has BR_CC.
183 setOperationAction(ISD::BRCOND, MVT::Other, Expand);
184 setOperationAction(ISD::BRIND, MVT::Other, Expand);
185 setOperationAction(ISD::BR_JT, MVT::Other, Expand);
186 setOperationAction(ISD::BR_CC, MVT::i32, Custom);
187 setOperationAction(ISD::BR_CC, MVT::f32, Custom);
188 setOperationAction(ISD::BR_CC, MVT::f64, Custom);
190 setOperationAction(ISD::SELECT_CC, MVT::i32, Custom);
191 setOperationAction(ISD::SELECT_CC, MVT::f32, Custom);
192 setOperationAction(ISD::SELECT_CC, MVT::f64, Custom);
194 // SPARC has no intrinsics for these particular operations.
195 setOperationAction(ISD::MEMMOVE, MVT::Other, Expand);
196 setOperationAction(ISD::MEMSET, MVT::Other, Expand);
197 setOperationAction(ISD::MEMCPY, MVT::Other, Expand);
198 setOperationAction(ISD::MEMBARRIER, MVT::Other, Expand);
200 setOperationAction(ISD::FSIN , MVT::f64, Expand);
201 setOperationAction(ISD::FCOS , MVT::f64, Expand);
202 setOperationAction(ISD::FREM , MVT::f64, Expand);
203 setOperationAction(ISD::FSIN , MVT::f32, Expand);
204 setOperationAction(ISD::FCOS , MVT::f32, Expand);
205 setOperationAction(ISD::FREM , MVT::f32, Expand);
206 setOperationAction(ISD::CTPOP, MVT::i32, Expand);
207 setOperationAction(ISD::CTTZ , MVT::i32, Expand);
208 setOperationAction(ISD::CTLZ , MVT::i32, Expand);
209 setOperationAction(ISD::ROTL , MVT::i32, Expand);
210 setOperationAction(ISD::ROTR , MVT::i32, Expand);
211 setOperationAction(ISD::BSWAP, MVT::i32, Expand);
212 setOperationAction(ISD::FCOPYSIGN, MVT::f64, Expand);
213 setOperationAction(ISD::FCOPYSIGN, MVT::f32, Expand);
214 setOperationAction(ISD::FPOW , MVT::f64, Expand);
215 setOperationAction(ISD::FPOW , MVT::f32, Expand);
217 setOperationAction(ISD::SHL_PARTS, MVT::i32, Expand);
218 setOperationAction(ISD::SRA_PARTS, MVT::i32, Expand);
219 setOperationAction(ISD::SRL_PARTS, MVT::i32, Expand);
221 // FIXME: Sparc provides these multiplies, but we don't have them yet.
222 setOperationAction(ISD::UMUL_LOHI, MVT::i32, Expand);
224 // We don't have line number support yet.
225 setOperationAction(ISD::LOCATION, MVT::Other, Expand);
226 setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
227 setOperationAction(ISD::LABEL, MVT::Other, Expand);
229 // RET must be custom lowered, to meet ABI requirements
230 setOperationAction(ISD::RET , MVT::Other, Custom);
232 // VASTART needs to be custom lowered to use the VarArgsFrameIndex.
233 setOperationAction(ISD::VASTART , MVT::Other, Custom);
234 // VAARG needs to be lowered to not do unaligned accesses for doubles.
235 setOperationAction(ISD::VAARG , MVT::Other, Custom);
237 // Use the default implementation.
238 setOperationAction(ISD::VACOPY , MVT::Other, Expand);
239 setOperationAction(ISD::VAEND , MVT::Other, Expand);
240 setOperationAction(ISD::STACKSAVE , MVT::Other, Expand);
241 setOperationAction(ISD::STACKRESTORE , MVT::Other, Expand);
242 setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32 , Custom);
244 setStackPointerRegisterToSaveRestore(SP::O6);
246 if (TM.getSubtarget<SparcSubtarget>().isV9()) {
247 setOperationAction(ISD::CTPOP, MVT::i32, Legal);
250 computeRegisterProperties();
253 const char *SparcTargetLowering::getTargetNodeName(unsigned Opcode) const {
256 case SPISD::CMPICC: return "SPISD::CMPICC";
257 case SPISD::CMPFCC: return "SPISD::CMPFCC";
258 case SPISD::BRICC: return "SPISD::BRICC";
259 case SPISD::BRFCC: return "SPISD::BRFCC";
260 case SPISD::SELECT_ICC: return "SPISD::SELECT_ICC";
261 case SPISD::SELECT_FCC: return "SPISD::SELECT_FCC";
262 case SPISD::Hi: return "SPISD::Hi";
263 case SPISD::Lo: return "SPISD::Lo";
264 case SPISD::FTOI: return "SPISD::FTOI";
265 case SPISD::ITOF: return "SPISD::ITOF";
266 case SPISD::CALL: return "SPISD::CALL";
267 case SPISD::RET_FLAG: return "SPISD::RET_FLAG";
271 /// isMaskedValueZeroForTargetNode - Return true if 'Op & Mask' is known to
272 /// be zero. Op is expected to be a target specific node. Used by DAG
274 void SparcTargetLowering::computeMaskedBitsForTargetNode(const SDOperand Op,
278 const SelectionDAG &DAG,
279 unsigned Depth) const {
280 APInt KnownZero2, KnownOne2;
281 KnownZero = KnownOne = APInt(Mask.getBitWidth(), 0); // Don't know anything.
283 switch (Op.getOpcode()) {
285 case SPISD::SELECT_ICC:
286 case SPISD::SELECT_FCC:
287 DAG.ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne,
289 DAG.ComputeMaskedBits(Op.getOperand(0), Mask, KnownZero2, KnownOne2,
291 assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
292 assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
294 // Only known if known in both the LHS and RHS.
295 KnownOne &= KnownOne2;
296 KnownZero &= KnownZero2;
301 /// LowerArguments - V8 uses a very simple ABI, where all values are passed in
302 /// either one or two GPRs, including FP values. TODO: we should pass FP values
303 /// in FP registers for fastcc functions.
304 std::vector<SDOperand>
305 SparcTargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) {
306 MachineFunction &MF = DAG.getMachineFunction();
307 MachineRegisterInfo &RegInfo = MF.getRegInfo();
308 std::vector<SDOperand> ArgValues;
310 static const unsigned ArgRegs[] = {
311 SP::I0, SP::I1, SP::I2, SP::I3, SP::I4, SP::I5
314 const unsigned *CurArgReg = ArgRegs, *ArgRegEnd = ArgRegs+6;
315 unsigned ArgOffset = 68;
317 SDOperand Root = DAG.getRoot();
318 std::vector<SDOperand> OutChains;
320 for (Function::arg_iterator I = F.arg_begin(), E = F.arg_end(); I != E; ++I) {
321 MVT::ValueType ObjectVT = getValueType(I->getType());
324 default: assert(0 && "Unhandled argument type!");
329 if (I->use_empty()) { // Argument is dead.
330 if (CurArgReg < ArgRegEnd) ++CurArgReg;
331 ArgValues.push_back(DAG.getNode(ISD::UNDEF, ObjectVT));
332 } else if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
333 unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
334 MF.getRegInfo().addLiveIn(*CurArgReg++, VReg);
335 SDOperand Arg = DAG.getCopyFromReg(Root, VReg, MVT::i32);
336 if (ObjectVT != MVT::i32) {
337 unsigned AssertOp = ISD::AssertSext;
338 Arg = DAG.getNode(AssertOp, MVT::i32, Arg,
339 DAG.getValueType(ObjectVT));
340 Arg = DAG.getNode(ISD::TRUNCATE, ObjectVT, Arg);
342 ArgValues.push_back(Arg);
344 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
345 SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
347 if (ObjectVT == MVT::i32) {
348 Load = DAG.getLoad(MVT::i32, Root, FIPtr, NULL, 0);
350 ISD::LoadExtType LoadOp = ISD::SEXTLOAD;
352 // Sparc is big endian, so add an offset based on the ObjectVT.
353 unsigned Offset = 4-std::max(1U, MVT::getSizeInBits(ObjectVT)/8);
354 FIPtr = DAG.getNode(ISD::ADD, MVT::i32, FIPtr,
355 DAG.getConstant(Offset, MVT::i32));
356 Load = DAG.getExtLoad(LoadOp, MVT::i32, Root, FIPtr,
358 Load = DAG.getNode(ISD::TRUNCATE, ObjectVT, Load);
360 ArgValues.push_back(Load);
366 if (I->use_empty()) { // Argument is dead.
367 if (CurArgReg < ArgRegEnd) ++CurArgReg;
368 ArgValues.push_back(DAG.getNode(ISD::UNDEF, ObjectVT));
369 } else if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
370 // FP value is passed in an integer register.
371 unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
372 MF.getRegInfo().addLiveIn(*CurArgReg++, VReg);
373 SDOperand Arg = DAG.getCopyFromReg(Root, VReg, MVT::i32);
375 Arg = DAG.getNode(ISD::BIT_CONVERT, MVT::f32, Arg);
376 ArgValues.push_back(Arg);
378 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
379 SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
380 SDOperand Load = DAG.getLoad(MVT::f32, Root, FIPtr, NULL, 0);
381 ArgValues.push_back(Load);
388 if (I->use_empty()) { // Argument is dead.
389 if (CurArgReg < ArgRegEnd) ++CurArgReg;
390 if (CurArgReg < ArgRegEnd) ++CurArgReg;
391 ArgValues.push_back(DAG.getNode(ISD::UNDEF, ObjectVT));
392 } else if (/* FIXME: Apparently this isn't safe?? */
393 0 && CurArgReg == ArgRegEnd && ObjectVT == MVT::f64 &&
394 ((CurArgReg-ArgRegs) & 1) == 0) {
395 // If this is a double argument and the whole thing lives on the stack,
396 // and the argument is aligned, load the double straight from the stack.
397 // We can't do a load in cases like void foo([6ints], int,double),
398 // because the double wouldn't be aligned!
399 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(8, ArgOffset);
400 SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
401 ArgValues.push_back(DAG.getLoad(MVT::f64, Root, FIPtr, NULL, 0));
404 if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
405 unsigned VRegHi = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
406 MF.getRegInfo().addLiveIn(*CurArgReg++, VRegHi);
407 HiVal = DAG.getCopyFromReg(Root, VRegHi, MVT::i32);
409 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
410 SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
411 HiVal = DAG.getLoad(MVT::i32, Root, FIPtr, NULL, 0);
415 if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
416 unsigned VRegLo = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
417 MF.getRegInfo().addLiveIn(*CurArgReg++, VRegLo);
418 LoVal = DAG.getCopyFromReg(Root, VRegLo, MVT::i32);
420 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset+4);
421 SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
422 LoVal = DAG.getLoad(MVT::i32, Root, FIPtr, NULL, 0);
425 // Compose the two halves together into an i64 unit.
426 SDOperand WholeValue =
427 DAG.getNode(ISD::BUILD_PAIR, MVT::i64, LoVal, HiVal);
429 // If we want a double, do a bit convert.
430 if (ObjectVT == MVT::f64)
431 WholeValue = DAG.getNode(ISD::BIT_CONVERT, MVT::f64, WholeValue);
433 ArgValues.push_back(WholeValue);
440 // Store remaining ArgRegs to the stack if this is a varargs function.
441 if (F.getFunctionType()->isVarArg()) {
442 // Remember the vararg offset for the va_start implementation.
443 VarArgsFrameOffset = ArgOffset;
445 for (; CurArgReg != ArgRegEnd; ++CurArgReg) {
446 unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
447 MF.getRegInfo().addLiveIn(*CurArgReg, VReg);
448 SDOperand Arg = DAG.getCopyFromReg(DAG.getRoot(), VReg, MVT::i32);
450 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
451 SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
453 OutChains.push_back(DAG.getStore(DAG.getRoot(), Arg, FIPtr, NULL, 0));
458 if (!OutChains.empty())
459 DAG.setRoot(DAG.getNode(ISD::TokenFactor, MVT::Other,
460 &OutChains[0], OutChains.size()));
462 // Finally, inform the code generator which regs we return values in.
463 switch (getValueType(F.getReturnType())) {
464 default: assert(0 && "Unknown type!");
465 case MVT::isVoid: break;
470 MF.getRegInfo().addLiveOut(SP::I0);
473 MF.getRegInfo().addLiveOut(SP::I0);
474 MF.getRegInfo().addLiveOut(SP::I1);
477 MF.getRegInfo().addLiveOut(SP::F0);
480 MF.getRegInfo().addLiveOut(SP::D0);
487 std::pair<SDOperand, SDOperand>
488 SparcTargetLowering::LowerCallTo(SDOperand Chain, const Type *RetTy,
489 bool RetSExt, bool RetZExt, bool isVarArg,
490 unsigned CC, bool isTailCall, SDOperand Callee,
491 ArgListTy &Args, SelectionDAG &DAG) {
492 // Count the size of the outgoing arguments.
493 unsigned ArgsSize = 0;
494 for (unsigned i = 0, e = Args.size(); i != e; ++i) {
495 switch (getValueType(Args[i].Ty)) {
496 default: assert(0 && "Unknown value type!");
511 ArgsSize -= 4*6; // Space for first 6 arguments is prereserved.
515 // Keep stack frames 8-byte aligned.
516 ArgsSize = (ArgsSize+7) & ~7;
518 Chain = DAG.getCALLSEQ_START(Chain,DAG.getConstant(ArgsSize, getPointerTy()));
521 std::vector<SDOperand> Stores;
522 std::vector<SDOperand> RegValuesToPass;
523 unsigned ArgOffset = 68;
524 for (unsigned i = 0, e = Args.size(); i != e; ++i) {
525 SDOperand Val = Args[i].Node;
526 MVT::ValueType ObjectVT = Val.getValueType();
527 SDOperand ValToStore(0, 0);
530 default: assert(0 && "Unhandled argument type!");
534 // Promote the integer to 32-bits. If the input type is signed, use a
535 // sign extend, otherwise use a zero extend.
536 ISD::NodeType ExtendKind = ISD::ANY_EXTEND;
538 ExtendKind = ISD::SIGN_EXTEND;
539 else if (Args[i].isZExt)
540 ExtendKind = ISD::ZERO_EXTEND;
541 Val = DAG.getNode(ExtendKind, MVT::i32, Val);
547 if (RegValuesToPass.size() >= 6) {
550 RegValuesToPass.push_back(Val);
555 if (RegValuesToPass.size() >= 6) {
558 // Convert this to a FP value in an int reg.
559 Val = DAG.getNode(ISD::BIT_CONVERT, MVT::i32, Val);
560 RegValuesToPass.push_back(Val);
565 // If we can store this directly into the outgoing slot, do so. We can
566 // do this when all ArgRegs are used and if the outgoing slot is aligned.
567 // FIXME: McGill/misr fails with this.
568 if (0 && RegValuesToPass.size() >= 6 && ((ArgOffset-68) & 7) == 0) {
573 // Otherwise, convert this to a FP value in int regs.
574 Val = DAG.getNode(ISD::BIT_CONVERT, MVT::i64, Val);
578 if (RegValuesToPass.size() >= 6) {
579 ValToStore = Val; // Whole thing is passed in memory.
583 // Split the value into top and bottom part. Top part goes in a reg.
584 SDOperand Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, getPointerTy(), Val,
585 DAG.getConstant(1, MVT::i32));
586 SDOperand Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, getPointerTy(), Val,
587 DAG.getConstant(0, MVT::i32));
588 RegValuesToPass.push_back(Hi);
590 if (RegValuesToPass.size() >= 6) {
595 RegValuesToPass.push_back(Lo);
600 if (ValToStore.Val) {
602 StackPtr = DAG.getRegister(SP::O6, MVT::i32);
604 SDOperand PtrOff = DAG.getConstant(ArgOffset, getPointerTy());
605 PtrOff = DAG.getNode(ISD::ADD, MVT::i32, StackPtr, PtrOff);
606 Stores.push_back(DAG.getStore(Chain, ValToStore, PtrOff, NULL, 0));
608 ArgOffset += ObjSize;
611 // Emit all stores, make sure the occur before any copies into physregs.
613 Chain = DAG.getNode(ISD::TokenFactor, MVT::Other, &Stores[0],Stores.size());
615 static const unsigned ArgRegs[] = {
616 SP::O0, SP::O1, SP::O2, SP::O3, SP::O4, SP::O5
619 // Build a sequence of copy-to-reg nodes chained together with token chain
620 // and flag operands which copy the outgoing args into O[0-5].
622 for (unsigned i = 0, e = RegValuesToPass.size(); i != e; ++i) {
623 Chain = DAG.getCopyToReg(Chain, ArgRegs[i], RegValuesToPass[i], InFlag);
624 InFlag = Chain.getValue(1);
627 // If the callee is a GlobalAddress node (quite common, every direct call is)
628 // turn it into a TargetGlobalAddress node so that legalize doesn't hack it.
629 // Likewise ExternalSymbol -> TargetExternalSymbol.
630 if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
631 Callee = DAG.getTargetGlobalAddress(G->getGlobal(), MVT::i32);
632 else if (ExternalSymbolSDNode *E = dyn_cast<ExternalSymbolSDNode>(Callee))
633 Callee = DAG.getTargetExternalSymbol(E->getSymbol(), MVT::i32);
635 std::vector<MVT::ValueType> NodeTys;
636 NodeTys.push_back(MVT::Other); // Returns a chain
637 NodeTys.push_back(MVT::Flag); // Returns a flag for retval copy to use.
638 SDOperand Ops[] = { Chain, Callee, InFlag };
639 Chain = DAG.getNode(SPISD::CALL, NodeTys, Ops, InFlag.Val ? 3 : 2);
640 InFlag = Chain.getValue(1);
642 MVT::ValueType RetTyVT = getValueType(RetTy);
644 if (RetTyVT != MVT::isVoid) {
646 default: assert(0 && "Unknown value type to return!");
650 RetVal = DAG.getCopyFromReg(Chain, SP::O0, MVT::i32, InFlag);
651 Chain = RetVal.getValue(1);
653 // Add a note to keep track of whether it is sign or zero extended.
654 ISD::NodeType AssertKind = ISD::DELETED_NODE;
656 AssertKind = ISD::AssertSext;
658 AssertKind = ISD::AssertZext;
660 if (AssertKind != ISD::DELETED_NODE)
661 RetVal = DAG.getNode(AssertKind, MVT::i32, RetVal,
662 DAG.getValueType(RetTyVT));
664 RetVal = DAG.getNode(ISD::TRUNCATE, RetTyVT, RetVal);
668 RetVal = DAG.getCopyFromReg(Chain, SP::O0, MVT::i32, InFlag);
669 Chain = RetVal.getValue(1);
672 RetVal = DAG.getCopyFromReg(Chain, SP::F0, MVT::f32, InFlag);
673 Chain = RetVal.getValue(1);
676 RetVal = DAG.getCopyFromReg(Chain, SP::D0, MVT::f64, InFlag);
677 Chain = RetVal.getValue(1);
680 SDOperand Lo = DAG.getCopyFromReg(Chain, SP::O1, MVT::i32, InFlag);
681 SDOperand Hi = DAG.getCopyFromReg(Lo.getValue(1), SP::O0, MVT::i32,
683 RetVal = DAG.getNode(ISD::BUILD_PAIR, MVT::i64, Lo, Hi);
684 Chain = Hi.getValue(1);
689 Chain = DAG.getCALLSEQ_END(Chain,
690 DAG.getConstant(ArgsSize, getPointerTy()),
691 DAG.getConstant(0, getPointerTy()),
693 return std::make_pair(RetVal, Chain);
696 // Look at LHS/RHS/CC and see if they are a lowered setcc instruction. If so
697 // set LHS/RHS and SPCC to the LHS/RHS of the setcc and SPCC to the condition.
698 static void LookThroughSetCC(SDOperand &LHS, SDOperand &RHS,
699 ISD::CondCode CC, unsigned &SPCC) {
700 if (isa<ConstantSDNode>(RHS) && cast<ConstantSDNode>(RHS)->getValue() == 0 &&
702 ((LHS.getOpcode() == SPISD::SELECT_ICC &&
703 LHS.getOperand(3).getOpcode() == SPISD::CMPICC) ||
704 (LHS.getOpcode() == SPISD::SELECT_FCC &&
705 LHS.getOperand(3).getOpcode() == SPISD::CMPFCC)) &&
706 isa<ConstantSDNode>(LHS.getOperand(0)) &&
707 isa<ConstantSDNode>(LHS.getOperand(1)) &&
708 cast<ConstantSDNode>(LHS.getOperand(0))->getValue() == 1 &&
709 cast<ConstantSDNode>(LHS.getOperand(1))->getValue() == 0) {
710 SDOperand CMPCC = LHS.getOperand(3);
711 SPCC = cast<ConstantSDNode>(LHS.getOperand(2))->getValue();
712 LHS = CMPCC.getOperand(0);
713 RHS = CMPCC.getOperand(1);
718 SDOperand SparcTargetLowering::
719 LowerOperation(SDOperand Op, SelectionDAG &DAG) {
720 switch (Op.getOpcode()) {
721 default: assert(0 && "Should not custom lower this!");
722 case ISD::GlobalTLSAddress:
723 assert(0 && "TLS not implemented for Sparc.");
724 case ISD::GlobalAddress: {
725 GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
726 SDOperand GA = DAG.getTargetGlobalAddress(GV, MVT::i32);
727 SDOperand Hi = DAG.getNode(SPISD::Hi, MVT::i32, GA);
728 SDOperand Lo = DAG.getNode(SPISD::Lo, MVT::i32, GA);
729 return DAG.getNode(ISD::ADD, MVT::i32, Lo, Hi);
731 case ISD::ConstantPool: {
732 Constant *C = cast<ConstantPoolSDNode>(Op)->getConstVal();
733 SDOperand CP = DAG.getTargetConstantPool(C, MVT::i32,
734 cast<ConstantPoolSDNode>(Op)->getAlignment());
735 SDOperand Hi = DAG.getNode(SPISD::Hi, MVT::i32, CP);
736 SDOperand Lo = DAG.getNode(SPISD::Lo, MVT::i32, CP);
737 return DAG.getNode(ISD::ADD, MVT::i32, Lo, Hi);
739 case ISD::FP_TO_SINT:
740 // Convert the fp value to integer in an FP register.
741 assert(Op.getValueType() == MVT::i32);
742 Op = DAG.getNode(SPISD::FTOI, MVT::f32, Op.getOperand(0));
743 return DAG.getNode(ISD::BIT_CONVERT, MVT::i32, Op);
744 case ISD::SINT_TO_FP: {
745 assert(Op.getOperand(0).getValueType() == MVT::i32);
746 SDOperand Tmp = DAG.getNode(ISD::BIT_CONVERT, MVT::f32, Op.getOperand(0));
747 // Convert the int value to FP in an FP register.
748 return DAG.getNode(SPISD::ITOF, Op.getValueType(), Tmp);
751 SDOperand Chain = Op.getOperand(0);
752 ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(1))->get();
753 SDOperand LHS = Op.getOperand(2);
754 SDOperand RHS = Op.getOperand(3);
755 SDOperand Dest = Op.getOperand(4);
756 unsigned Opc, SPCC = ~0U;
758 // If this is a br_cc of a "setcc", and if the setcc got lowered into
759 // an CMP[IF]CC/SELECT_[IF]CC pair, find the original compared values.
760 LookThroughSetCC(LHS, RHS, CC, SPCC);
762 // Get the condition flag.
763 SDOperand CompareFlag;
764 if (LHS.getValueType() == MVT::i32) {
765 std::vector<MVT::ValueType> VTs;
766 VTs.push_back(MVT::i32);
767 VTs.push_back(MVT::Flag);
768 SDOperand Ops[2] = { LHS, RHS };
769 CompareFlag = DAG.getNode(SPISD::CMPICC, VTs, Ops, 2).getValue(1);
770 if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);
773 CompareFlag = DAG.getNode(SPISD::CMPFCC, MVT::Flag, LHS, RHS);
774 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
777 return DAG.getNode(Opc, MVT::Other, Chain, Dest,
778 DAG.getConstant(SPCC, MVT::i32), CompareFlag);
780 case ISD::SELECT_CC: {
781 SDOperand LHS = Op.getOperand(0);
782 SDOperand RHS = Op.getOperand(1);
783 ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(4))->get();
784 SDOperand TrueVal = Op.getOperand(2);
785 SDOperand FalseVal = Op.getOperand(3);
786 unsigned Opc, SPCC = ~0U;
788 // If this is a select_cc of a "setcc", and if the setcc got lowered into
789 // an CMP[IF]CC/SELECT_[IF]CC pair, find the original compared values.
790 LookThroughSetCC(LHS, RHS, CC, SPCC);
792 SDOperand CompareFlag;
793 if (LHS.getValueType() == MVT::i32) {
794 std::vector<MVT::ValueType> VTs;
795 VTs.push_back(LHS.getValueType()); // subcc returns a value
796 VTs.push_back(MVT::Flag);
797 SDOperand Ops[2] = { LHS, RHS };
798 CompareFlag = DAG.getNode(SPISD::CMPICC, VTs, Ops, 2).getValue(1);
799 Opc = SPISD::SELECT_ICC;
800 if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);
802 CompareFlag = DAG.getNode(SPISD::CMPFCC, MVT::Flag, LHS, RHS);
803 Opc = SPISD::SELECT_FCC;
804 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
806 return DAG.getNode(Opc, TrueVal.getValueType(), TrueVal, FalseVal,
807 DAG.getConstant(SPCC, MVT::i32), CompareFlag);
810 // vastart just stores the address of the VarArgsFrameIndex slot into the
811 // memory location argument.
812 SDOperand Offset = DAG.getNode(ISD::ADD, MVT::i32,
813 DAG.getRegister(SP::I6, MVT::i32),
814 DAG.getConstant(VarArgsFrameOffset, MVT::i32));
815 const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
816 return DAG.getStore(Op.getOperand(0), Offset, Op.getOperand(1), SV, 0);
819 SDNode *Node = Op.Val;
820 MVT::ValueType VT = Node->getValueType(0);
821 SDOperand InChain = Node->getOperand(0);
822 SDOperand VAListPtr = Node->getOperand(1);
823 const Value *SV = cast<SrcValueSDNode>(Node->getOperand(2))->getValue();
824 SDOperand VAList = DAG.getLoad(getPointerTy(), InChain, VAListPtr, SV, 0);
825 // Increment the pointer, VAList, to the next vaarg
826 SDOperand NextPtr = DAG.getNode(ISD::ADD, getPointerTy(), VAList,
827 DAG.getConstant(MVT::getSizeInBits(VT)/8,
829 // Store the incremented VAList to the legalized pointer
830 InChain = DAG.getStore(VAList.getValue(1), NextPtr,
832 // Load the actual argument out of the pointer VAList, unless this is an
834 if (VT != MVT::f64) {
835 return DAG.getLoad(VT, InChain, VAList, NULL, 0);
837 // Otherwise, load it as i64, then do a bitconvert.
838 SDOperand V = DAG.getLoad(MVT::i64, InChain, VAList, NULL, 0);
839 std::vector<MVT::ValueType> Tys;
840 Tys.push_back(MVT::f64);
841 Tys.push_back(MVT::Other);
842 // Bit-Convert the value to f64.
843 SDOperand Ops[2] = { DAG.getNode(ISD::BIT_CONVERT, MVT::f64, V),
845 return DAG.getNode(ISD::MERGE_VALUES, Tys, Ops, 2);
848 case ISD::DYNAMIC_STACKALLOC: {
849 SDOperand Chain = Op.getOperand(0); // Legalize the chain.
850 SDOperand Size = Op.getOperand(1); // Legalize the size.
852 unsigned SPReg = SP::O6;
853 SDOperand SP = DAG.getCopyFromReg(Chain, SPReg, MVT::i32);
854 SDOperand NewSP = DAG.getNode(ISD::SUB, MVT::i32, SP, Size); // Value
855 Chain = DAG.getCopyToReg(SP.getValue(1), SPReg, NewSP); // Output chain
857 // The resultant pointer is actually 16 words from the bottom of the stack,
858 // to provide a register spill area.
859 SDOperand NewVal = DAG.getNode(ISD::ADD, MVT::i32, NewSP,
860 DAG.getConstant(96, MVT::i32));
861 std::vector<MVT::ValueType> Tys;
862 Tys.push_back(MVT::i32);
863 Tys.push_back(MVT::Other);
864 SDOperand Ops[2] = { NewVal, Chain };
865 return DAG.getNode(ISD::MERGE_VALUES, Tys, Ops, 2);
870 switch(Op.getNumOperands()) {
872 assert(0 && "Do not know how to return this many arguments!");
875 return SDOperand(); // ret void is legal
878 switch(Op.getOperand(1).getValueType()) {
879 default: assert(0 && "Unknown type to return!");
880 case MVT::i32: ArgReg = SP::I0; break;
881 case MVT::f32: ArgReg = SP::F0; break;
882 case MVT::f64: ArgReg = SP::D0; break;
884 Copy = DAG.getCopyToReg(Op.getOperand(0), ArgReg, Op.getOperand(1),
889 Copy = DAG.getCopyToReg(Op.getOperand(0), SP::I0, Op.getOperand(3),
891 Copy = DAG.getCopyToReg(Copy, SP::I1, Op.getOperand(1), Copy.getValue(1));
894 return DAG.getNode(SPISD::RET_FLAG, MVT::Other, Copy, Copy.getValue(1));
896 // Frame & Return address. Currently unimplemented
897 case ISD::RETURNADDR: break;
898 case ISD::FRAMEADDR: break;
904 SparcTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
905 MachineBasicBlock *BB) {
906 const TargetInstrInfo &TII = *getTargetMachine().getInstrInfo();
909 // Figure out the conditional branch opcode to use for this select_cc.
910 switch (MI->getOpcode()) {
911 default: assert(0 && "Unknown SELECT_CC!");
912 case SP::SELECT_CC_Int_ICC:
913 case SP::SELECT_CC_FP_ICC:
914 case SP::SELECT_CC_DFP_ICC:
915 BROpcode = SP::BCOND;
917 case SP::SELECT_CC_Int_FCC:
918 case SP::SELECT_CC_FP_FCC:
919 case SP::SELECT_CC_DFP_FCC:
920 BROpcode = SP::FBCOND;
924 CC = (SPCC::CondCodes)MI->getOperand(3).getImm();
926 // To "insert" a SELECT_CC instruction, we actually have to insert the diamond
927 // control-flow pattern. The incoming instruction knows the destination vreg
928 // to set, the condition code register to branch on, the true/false values to
929 // select between, and a branch opcode to use.
930 const BasicBlock *LLVM_BB = BB->getBasicBlock();
931 ilist<MachineBasicBlock>::iterator It = BB;
938 // fallthrough --> copy0MBB
939 MachineBasicBlock *thisMBB = BB;
940 MachineBasicBlock *copy0MBB = new MachineBasicBlock(LLVM_BB);
941 MachineBasicBlock *sinkMBB = new MachineBasicBlock(LLVM_BB);
942 BuildMI(BB, TII.get(BROpcode)).addMBB(sinkMBB).addImm(CC);
943 MachineFunction *F = BB->getParent();
944 F->getBasicBlockList().insert(It, copy0MBB);
945 F->getBasicBlockList().insert(It, sinkMBB);
946 // Update machine-CFG edges by first adding all successors of the current
947 // block to the new block which will contain the Phi node for the select.
948 for(MachineBasicBlock::succ_iterator i = BB->succ_begin(),
949 e = BB->succ_end(); i != e; ++i)
950 sinkMBB->addSuccessor(*i);
951 // Next, remove all successors of the current block, and add the true
952 // and fallthrough blocks as its successors.
953 while(!BB->succ_empty())
954 BB->removeSuccessor(BB->succ_begin());
955 BB->addSuccessor(copy0MBB);
956 BB->addSuccessor(sinkMBB);
960 // # fallthrough to sinkMBB
963 // Update machine-CFG edges
964 BB->addSuccessor(sinkMBB);
967 // %Result = phi [ %FalseValue, copy0MBB ], [ %TrueValue, thisMBB ]
970 BuildMI(BB, TII.get(SP::PHI), MI->getOperand(0).getReg())
971 .addReg(MI->getOperand(2).getReg()).addMBB(copy0MBB)
972 .addReg(MI->getOperand(1).getReg()).addMBB(thisMBB);
974 delete MI; // The pseudo instruction is gone now.
978 //===----------------------------------------------------------------------===//
979 // Instruction Selector Implementation
980 //===----------------------------------------------------------------------===//
982 //===--------------------------------------------------------------------===//
983 /// SparcDAGToDAGISel - SPARC specific code to select SPARC machine
984 /// instructions for SelectionDAG operations.
987 class SparcDAGToDAGISel : public SelectionDAGISel {
988 SparcTargetLowering Lowering;
990 /// Subtarget - Keep a pointer to the Sparc Subtarget around so that we can
991 /// make the right decision when generating code for different targets.
992 const SparcSubtarget &Subtarget;
994 SparcDAGToDAGISel(TargetMachine &TM)
995 : SelectionDAGISel(Lowering), Lowering(TM),
996 Subtarget(TM.getSubtarget<SparcSubtarget>()) {
999 SDNode *Select(SDOperand Op);
1001 // Complex Pattern Selectors.
1002 bool SelectADDRrr(SDOperand Op, SDOperand N, SDOperand &R1, SDOperand &R2);
1003 bool SelectADDRri(SDOperand Op, SDOperand N, SDOperand &Base,
1006 /// InstructionSelectBasicBlock - This callback is invoked by
1007 /// SelectionDAGISel when it has created a SelectionDAG for us to codegen.
1008 virtual void InstructionSelectBasicBlock(SelectionDAG &DAG);
1010 virtual const char *getPassName() const {
1011 return "SPARC DAG->DAG Pattern Instruction Selection";
1014 // Include the pieces autogenerated from the target description.
1015 #include "SparcGenDAGISel.inc"
1017 } // end anonymous namespace
1019 /// InstructionSelectBasicBlock - This callback is invoked by
1020 /// SelectionDAGISel when it has created a SelectionDAG for us to codegen.
1021 void SparcDAGToDAGISel::InstructionSelectBasicBlock(SelectionDAG &DAG) {
1024 // Select target instructions for the DAG.
1025 DAG.setRoot(SelectRoot(DAG.getRoot()));
1026 DAG.RemoveDeadNodes();
1028 // Emit machine code to BB.
1029 ScheduleAndEmitDAG(DAG);
1032 bool SparcDAGToDAGISel::SelectADDRri(SDOperand Op, SDOperand Addr,
1033 SDOperand &Base, SDOperand &Offset) {
1034 if (FrameIndexSDNode *FIN = dyn_cast<FrameIndexSDNode>(Addr)) {
1035 Base = CurDAG->getTargetFrameIndex(FIN->getIndex(), MVT::i32);
1036 Offset = CurDAG->getTargetConstant(0, MVT::i32);
1039 if (Addr.getOpcode() == ISD::TargetExternalSymbol ||
1040 Addr.getOpcode() == ISD::TargetGlobalAddress)
1041 return false; // direct calls.
1043 if (Addr.getOpcode() == ISD::ADD) {
1044 if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(Addr.getOperand(1))) {
1045 if (Predicate_simm13(CN)) {
1046 if (FrameIndexSDNode *FIN =
1047 dyn_cast<FrameIndexSDNode>(Addr.getOperand(0))) {
1048 // Constant offset from frame ref.
1049 Base = CurDAG->getTargetFrameIndex(FIN->getIndex(), MVT::i32);
1051 Base = Addr.getOperand(0);
1053 Offset = CurDAG->getTargetConstant(CN->getValue(), MVT::i32);
1057 if (Addr.getOperand(0).getOpcode() == SPISD::Lo) {
1058 Base = Addr.getOperand(1);
1059 Offset = Addr.getOperand(0).getOperand(0);
1062 if (Addr.getOperand(1).getOpcode() == SPISD::Lo) {
1063 Base = Addr.getOperand(0);
1064 Offset = Addr.getOperand(1).getOperand(0);
1069 Offset = CurDAG->getTargetConstant(0, MVT::i32);
1073 bool SparcDAGToDAGISel::SelectADDRrr(SDOperand Op, SDOperand Addr,
1074 SDOperand &R1, SDOperand &R2) {
1075 if (Addr.getOpcode() == ISD::FrameIndex) return false;
1076 if (Addr.getOpcode() == ISD::TargetExternalSymbol ||
1077 Addr.getOpcode() == ISD::TargetGlobalAddress)
1078 return false; // direct calls.
1080 if (Addr.getOpcode() == ISD::ADD) {
1081 if (isa<ConstantSDNode>(Addr.getOperand(1)) &&
1082 Predicate_simm13(Addr.getOperand(1).Val))
1083 return false; // Let the reg+imm pattern catch this!
1084 if (Addr.getOperand(0).getOpcode() == SPISD::Lo ||
1085 Addr.getOperand(1).getOpcode() == SPISD::Lo)
1086 return false; // Let the reg+imm pattern catch this!
1087 R1 = Addr.getOperand(0);
1088 R2 = Addr.getOperand(1);
1093 R2 = CurDAG->getRegister(SP::G0, MVT::i32);
1097 SDNode *SparcDAGToDAGISel::Select(SDOperand Op) {
1099 if (N->getOpcode() >= ISD::BUILTIN_OP_END &&
1100 N->getOpcode() < SPISD::FIRST_NUMBER)
1101 return NULL; // Already selected.
1103 switch (N->getOpcode()) {
1107 // FIXME: should use a custom expander to expose the SRA to the dag.
1108 SDOperand DivLHS = N->getOperand(0);
1109 SDOperand DivRHS = N->getOperand(1);
1110 AddToISelQueue(DivLHS);
1111 AddToISelQueue(DivRHS);
1113 // Set the Y register to the high-part.
1115 if (N->getOpcode() == ISD::SDIV) {
1116 TopPart = SDOperand(CurDAG->getTargetNode(SP::SRAri, MVT::i32, DivLHS,
1117 CurDAG->getTargetConstant(31, MVT::i32)), 0);
1119 TopPart = CurDAG->getRegister(SP::G0, MVT::i32);
1121 TopPart = SDOperand(CurDAG->getTargetNode(SP::WRYrr, MVT::Flag, TopPart,
1122 CurDAG->getRegister(SP::G0, MVT::i32)), 0);
1124 // FIXME: Handle div by immediate.
1125 unsigned Opcode = N->getOpcode() == ISD::SDIV ? SP::SDIVrr : SP::UDIVrr;
1126 return CurDAG->SelectNodeTo(N, Opcode, MVT::i32, DivLHS, DivRHS,
1131 // FIXME: Handle mul by immediate.
1132 SDOperand MulLHS = N->getOperand(0);
1133 SDOperand MulRHS = N->getOperand(1);
1134 AddToISelQueue(MulLHS);
1135 AddToISelQueue(MulRHS);
1136 unsigned Opcode = N->getOpcode() == ISD::MULHU ? SP::UMULrr : SP::SMULrr;
1137 SDNode *Mul = CurDAG->getTargetNode(Opcode, MVT::i32, MVT::Flag,
1139 // The high part is in the Y register.
1140 return CurDAG->SelectNodeTo(N, SP::RDY, MVT::i32, SDOperand(Mul, 1));
1145 return SelectCode(Op);
1149 /// createSparcISelDag - This pass converts a legalized DAG into a
1150 /// SPARC-specific DAG, ready for instruction scheduling.
1152 FunctionPass *llvm::createSparcISelDag(TargetMachine &TM) {
1153 return new SparcDAGToDAGISel(TM);