1 //===-- X86MCInstLower.cpp - Convert X86 MachineInstr to an MCInst --------===//
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 contains code to lower X86 MachineInstrs to their corresponding
13 //===----------------------------------------------------------------------===//
15 #include "X86MCInstLower.h"
16 #include "X86AsmPrinter.h"
17 #include "X86MCAsmInfo.h"
18 #include "X86COFFMachineModuleInfo.h"
19 #include "llvm/Analysis/DebugInfo.h"
20 #include "llvm/CodeGen/MachineModuleInfoImpls.h"
21 #include "llvm/MC/MCContext.h"
22 #include "llvm/MC/MCExpr.h"
23 #include "llvm/MC/MCInst.h"
24 #include "llvm/MC/MCStreamer.h"
25 #include "llvm/Target/Mangler.h"
26 #include "llvm/Support/FormattedStream.h"
27 #include "llvm/ADT/SmallString.h"
28 #include "llvm/Type.h"
32 const X86Subtarget &X86MCInstLower::getSubtarget() const {
33 return AsmPrinter.getSubtarget();
36 MachineModuleInfoMachO &X86MCInstLower::getMachOMMI() const {
37 assert(getSubtarget().isTargetDarwin() &&"Can only get MachO info on darwin");
38 return AsmPrinter.MMI->getObjFileInfo<MachineModuleInfoMachO>();
42 MCSymbol *X86MCInstLower::GetPICBaseSymbol() const {
43 const TargetLowering *TLI = AsmPrinter.TM.getTargetLowering();
44 return static_cast<const X86TargetLowering*>(TLI)->
45 getPICBaseSymbol(AsmPrinter.MF, Ctx);
48 /// LowerGlobalAddressOperand - Lower an MO_GlobalAddress operand to an
50 MCSymbol *X86MCInstLower::
51 GetGlobalAddressSymbol(const MachineOperand &MO) const {
52 const GlobalValue *GV = MO.getGlobal();
54 bool isImplicitlyPrivate = false;
55 if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB ||
56 MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY ||
57 MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE ||
58 MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE)
59 isImplicitlyPrivate = true;
61 SmallString<128> Name;
62 Mang->getNameWithPrefix(Name, GV, isImplicitlyPrivate);
64 if (getSubtarget().isTargetCygMing()) {
65 X86COFFMachineModuleInfo &COFFMMI =
66 AsmPrinter.MMI->getObjFileInfo<X86COFFMachineModuleInfo>();
67 COFFMMI.DecorateCygMingName(Name, GV, *AsmPrinter.TM.getTargetData());
70 switch (MO.getTargetFlags()) {
71 default: llvm_unreachable("Unknown target flag on GV operand");
72 case X86II::MO_NO_FLAG: // No flag.
73 case X86II::MO_PIC_BASE_OFFSET: // Doesn't modify symbol name.
75 case X86II::MO_DLLIMPORT: {
76 // Handle dllimport linkage.
77 const char *Prefix = "__imp_";
78 Name.insert(Name.begin(), Prefix, Prefix+strlen(Prefix));
81 case X86II::MO_DARWIN_NONLAZY:
82 case X86II::MO_DARWIN_NONLAZY_PIC_BASE: {
83 Name += "$non_lazy_ptr";
84 MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
86 MCSymbol *&StubSym = getMachOMMI().getGVStubEntry(Sym);
88 StubSym = AsmPrinter.GetGlobalValueSymbol(GV);
91 case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE: {
92 Name += "$non_lazy_ptr";
93 MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
94 MCSymbol *&StubSym = getMachOMMI().getHiddenGVStubEntry(Sym);
96 StubSym = AsmPrinter.GetGlobalValueSymbol(GV);
99 case X86II::MO_DARWIN_STUB: {
101 MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
102 MCSymbol *&StubSym = getMachOMMI().getFnStubEntry(Sym);
104 StubSym = AsmPrinter.GetGlobalValueSymbol(GV);
107 // FIXME: These probably should be a modifier on the symbol or something??
108 case X86II::MO_TLSGD: Name += "@TLSGD"; break;
109 case X86II::MO_GOTTPOFF: Name += "@GOTTPOFF"; break;
110 case X86II::MO_INDNTPOFF: Name += "@INDNTPOFF"; break;
111 case X86II::MO_TPOFF: Name += "@TPOFF"; break;
112 case X86II::MO_NTPOFF: Name += "@NTPOFF"; break;
113 case X86II::MO_GOTPCREL: Name += "@GOTPCREL"; break;
114 case X86II::MO_GOT: Name += "@GOT"; break;
115 case X86II::MO_GOTOFF: Name += "@GOTOFF"; break;
116 case X86II::MO_PLT: Name += "@PLT"; break;
119 return Ctx.GetOrCreateSymbol(Name.str());
122 MCSymbol *X86MCInstLower::
123 GetExternalSymbolSymbol(const MachineOperand &MO) const {
124 SmallString<128> Name;
125 Name += AsmPrinter.MAI->getGlobalPrefix();
126 Name += MO.getSymbolName();
128 switch (MO.getTargetFlags()) {
129 default: llvm_unreachable("Unknown target flag on GV operand");
130 case X86II::MO_NO_FLAG: // No flag.
131 case X86II::MO_GOT_ABSOLUTE_ADDRESS: // Doesn't modify symbol name.
132 case X86II::MO_PIC_BASE_OFFSET: // Doesn't modify symbol name.
134 case X86II::MO_DLLIMPORT: {
135 // Handle dllimport linkage.
136 const char *Prefix = "__imp_";
137 Name.insert(Name.begin(), Prefix, Prefix+strlen(Prefix));
140 case X86II::MO_DARWIN_STUB: {
142 MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
143 MCSymbol *&StubSym = getMachOMMI().getFnStubEntry(Sym);
146 Name.erase(Name.end()-5, Name.end());
147 StubSym = Ctx.GetOrCreateSymbol(Name.str());
151 // FIXME: These probably should be a modifier on the symbol or something??
152 case X86II::MO_TLSGD: Name += "@TLSGD"; break;
153 case X86II::MO_GOTTPOFF: Name += "@GOTTPOFF"; break;
154 case X86II::MO_INDNTPOFF: Name += "@INDNTPOFF"; break;
155 case X86II::MO_TPOFF: Name += "@TPOFF"; break;
156 case X86II::MO_NTPOFF: Name += "@NTPOFF"; break;
157 case X86II::MO_GOTPCREL: Name += "@GOTPCREL"; break;
158 case X86II::MO_GOT: Name += "@GOT"; break;
159 case X86II::MO_GOTOFF: Name += "@GOTOFF"; break;
160 case X86II::MO_PLT: Name += "@PLT"; break;
163 return Ctx.GetOrCreateSymbol(Name.str());
166 MCSymbol *X86MCInstLower::GetJumpTableSymbol(const MachineOperand &MO) const {
167 SmallString<256> Name;
168 // FIXME: Use AsmPrinter.GetJTISymbol. @TLSGD shouldn't be part of the symbol
170 raw_svector_ostream(Name) << AsmPrinter.MAI->getPrivateGlobalPrefix() << "JTI"
171 << AsmPrinter.getFunctionNumber() << '_' << MO.getIndex();
173 switch (MO.getTargetFlags()) {
175 llvm_unreachable("Unknown target flag on GV operand");
176 case X86II::MO_NO_FLAG: // No flag.
177 case X86II::MO_PIC_BASE_OFFSET:
178 case X86II::MO_DARWIN_NONLAZY_PIC_BASE:
179 case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE:
181 // FIXME: These probably should be a modifier on the symbol or something??
182 case X86II::MO_TLSGD: Name += "@TLSGD"; break;
183 case X86II::MO_GOTTPOFF: Name += "@GOTTPOFF"; break;
184 case X86II::MO_INDNTPOFF: Name += "@INDNTPOFF"; break;
185 case X86II::MO_TPOFF: Name += "@TPOFF"; break;
186 case X86II::MO_NTPOFF: Name += "@NTPOFF"; break;
187 case X86II::MO_GOTPCREL: Name += "@GOTPCREL"; break;
188 case X86II::MO_GOT: Name += "@GOT"; break;
189 case X86II::MO_GOTOFF: Name += "@GOTOFF"; break;
190 case X86II::MO_PLT: Name += "@PLT"; break;
193 // Create a symbol for the name.
194 return Ctx.GetOrCreateSymbol(Name.str());
198 MCSymbol *X86MCInstLower::
199 GetConstantPoolIndexSymbol(const MachineOperand &MO) const {
200 SmallString<256> Name;
201 // FIXME: USe AsmPrinter.GetCPISymbol. @TLSGD shouldn't be part of the symbol
203 raw_svector_ostream(Name) << AsmPrinter.MAI->getPrivateGlobalPrefix() << "CPI"
204 << AsmPrinter.getFunctionNumber() << '_' << MO.getIndex();
206 switch (MO.getTargetFlags()) {
208 llvm_unreachable("Unknown target flag on GV operand");
209 case X86II::MO_NO_FLAG: // No flag.
210 case X86II::MO_PIC_BASE_OFFSET:
211 case X86II::MO_DARWIN_NONLAZY_PIC_BASE:
212 case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE:
214 // FIXME: These probably should be a modifier on the symbol or something??
215 case X86II::MO_TLSGD: Name += "@TLSGD"; break;
216 case X86II::MO_GOTTPOFF: Name += "@GOTTPOFF"; break;
217 case X86II::MO_INDNTPOFF: Name += "@INDNTPOFF"; break;
218 case X86II::MO_TPOFF: Name += "@TPOFF"; break;
219 case X86II::MO_NTPOFF: Name += "@NTPOFF"; break;
220 case X86II::MO_GOTPCREL: Name += "@GOTPCREL"; break;
221 case X86II::MO_GOT: Name += "@GOT"; break;
222 case X86II::MO_GOTOFF: Name += "@GOTOFF"; break;
223 case X86II::MO_PLT: Name += "@PLT"; break;
226 // Create a symbol for the name.
227 return Ctx.GetOrCreateSymbol(Name.str());
230 MCSymbol *X86MCInstLower::
231 GetBlockAddressSymbol(const MachineOperand &MO) const {
232 const char *Suffix = "";
233 switch (MO.getTargetFlags()) {
234 default: llvm_unreachable("Unknown target flag on BA operand");
235 case X86II::MO_NO_FLAG: break; // No flag.
236 case X86II::MO_PIC_BASE_OFFSET: break; // Doesn't modify symbol name.
237 case X86II::MO_GOTOFF: Suffix = "@GOTOFF"; break;
240 return AsmPrinter.GetBlockAddressSymbol(MO.getBlockAddress(), Suffix);
243 MCOperand X86MCInstLower::LowerSymbolOperand(const MachineOperand &MO,
244 MCSymbol *Sym) const {
245 // FIXME: We would like an efficient form for this, so we don't have to do a
246 // lot of extra uniquing.
247 const MCExpr *Expr = MCSymbolRefExpr::Create(Sym, Ctx);
249 switch (MO.getTargetFlags()) {
250 default: llvm_unreachable("Unknown target flag on GV operand");
251 case X86II::MO_NO_FLAG: // No flag.
253 // These affect the name of the symbol, not any suffix.
254 case X86II::MO_DARWIN_NONLAZY:
255 case X86II::MO_DLLIMPORT:
256 case X86II::MO_DARWIN_STUB:
257 case X86II::MO_TLSGD:
258 case X86II::MO_GOTTPOFF:
259 case X86II::MO_INDNTPOFF:
260 case X86II::MO_TPOFF:
261 case X86II::MO_NTPOFF:
262 case X86II::MO_GOTPCREL:
264 case X86II::MO_GOTOFF:
267 case X86II::MO_PIC_BASE_OFFSET:
268 case X86II::MO_DARWIN_NONLAZY_PIC_BASE:
269 case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE:
270 // Subtract the pic base.
271 Expr = MCBinaryExpr::CreateSub(Expr,
272 MCSymbolRefExpr::Create(GetPICBaseSymbol(), Ctx),
277 if (!MO.isJTI() && MO.getOffset())
278 Expr = MCBinaryExpr::CreateAdd(Expr,
279 MCConstantExpr::Create(MO.getOffset(), Ctx),
281 return MCOperand::CreateExpr(Expr);
286 static void lower_subreg32(MCInst *MI, unsigned OpNo) {
287 // Convert registers in the addr mode according to subreg32.
288 unsigned Reg = MI->getOperand(OpNo).getReg();
290 MI->getOperand(OpNo).setReg(getX86SubSuperRegister(Reg, MVT::i32));
293 static void lower_lea64_32mem(MCInst *MI, unsigned OpNo) {
294 // Convert registers in the addr mode according to subreg64.
295 for (unsigned i = 0; i != 4; ++i) {
296 if (!MI->getOperand(OpNo+i).isReg()) continue;
298 unsigned Reg = MI->getOperand(OpNo+i).getReg();
299 if (Reg == 0) continue;
301 MI->getOperand(OpNo+i).setReg(getX86SubSuperRegister(Reg, MVT::i64));
305 /// LowerSubReg32_Op0 - Things like MOVZX16rr8 -> MOVZX32rr8.
306 static void LowerSubReg32_Op0(MCInst &OutMI, unsigned NewOpc) {
307 OutMI.setOpcode(NewOpc);
308 lower_subreg32(&OutMI, 0);
310 /// LowerUnaryToTwoAddr - R = setb -> R = sbb R, R
311 static void LowerUnaryToTwoAddr(MCInst &OutMI, unsigned NewOpc) {
312 OutMI.setOpcode(NewOpc);
313 OutMI.addOperand(OutMI.getOperand(0));
314 OutMI.addOperand(OutMI.getOperand(0));
318 void X86MCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
319 OutMI.setOpcode(MI->getOpcode());
321 for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
322 const MachineOperand &MO = MI->getOperand(i);
325 switch (MO.getType()) {
328 llvm_unreachable("unknown operand type");
329 case MachineOperand::MO_Register:
330 // Ignore all implicit register operands.
331 if (MO.isImplicit()) continue;
332 MCOp = MCOperand::CreateReg(MO.getReg());
334 case MachineOperand::MO_Immediate:
335 MCOp = MCOperand::CreateImm(MO.getImm());
337 case MachineOperand::MO_MachineBasicBlock:
338 MCOp = MCOperand::CreateExpr(MCSymbolRefExpr::Create(
339 MO.getMBB()->getSymbol(Ctx), Ctx));
341 case MachineOperand::MO_GlobalAddress:
342 MCOp = LowerSymbolOperand(MO, GetGlobalAddressSymbol(MO));
344 case MachineOperand::MO_ExternalSymbol:
345 MCOp = LowerSymbolOperand(MO, GetExternalSymbolSymbol(MO));
347 case MachineOperand::MO_JumpTableIndex:
348 MCOp = LowerSymbolOperand(MO, GetJumpTableSymbol(MO));
350 case MachineOperand::MO_ConstantPoolIndex:
351 MCOp = LowerSymbolOperand(MO, GetConstantPoolIndexSymbol(MO));
353 case MachineOperand::MO_BlockAddress:
354 MCOp = LowerSymbolOperand(MO, GetBlockAddressSymbol(MO));
358 OutMI.addOperand(MCOp);
361 // Handle a few special cases to eliminate operand modifiers.
362 switch (OutMI.getOpcode()) {
363 case X86::LEA64_32r: // Handle 'subreg rewriting' for the lea64_32mem operand.
364 lower_lea64_32mem(&OutMI, 1);
366 case X86::MOVZX16rr8: LowerSubReg32_Op0(OutMI, X86::MOVZX32rr8); break;
367 case X86::MOVZX16rm8: LowerSubReg32_Op0(OutMI, X86::MOVZX32rm8); break;
368 case X86::MOVSX16rr8: LowerSubReg32_Op0(OutMI, X86::MOVSX32rr8); break;
369 case X86::MOVSX16rm8: LowerSubReg32_Op0(OutMI, X86::MOVSX32rm8); break;
370 case X86::MOVZX64rr32: LowerSubReg32_Op0(OutMI, X86::MOV32rr); break;
371 case X86::MOVZX64rm32: LowerSubReg32_Op0(OutMI, X86::MOV32rm); break;
372 case X86::MOV64ri64i32: LowerSubReg32_Op0(OutMI, X86::MOV32ri); break;
373 case X86::MOVZX64rr8: LowerSubReg32_Op0(OutMI, X86::MOVZX32rr8); break;
374 case X86::MOVZX64rm8: LowerSubReg32_Op0(OutMI, X86::MOVZX32rm8); break;
375 case X86::MOVZX64rr16: LowerSubReg32_Op0(OutMI, X86::MOVZX32rr16); break;
376 case X86::MOVZX64rm16: LowerSubReg32_Op0(OutMI, X86::MOVZX32rm16); break;
377 case X86::SETB_C8r: LowerUnaryToTwoAddr(OutMI, X86::SBB8rr); break;
378 case X86::SETB_C16r: LowerUnaryToTwoAddr(OutMI, X86::SBB16rr); break;
379 case X86::SETB_C32r: LowerUnaryToTwoAddr(OutMI, X86::SBB32rr); break;
380 case X86::SETB_C64r: LowerUnaryToTwoAddr(OutMI, X86::SBB64rr); break;
381 case X86::MOV8r0: LowerUnaryToTwoAddr(OutMI, X86::XOR8rr); break;
382 case X86::MOV32r0: LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); break;
383 case X86::MMX_V_SET0: LowerUnaryToTwoAddr(OutMI, X86::MMX_PXORrr); break;
384 case X86::MMX_V_SETALLONES:
385 LowerUnaryToTwoAddr(OutMI, X86::MMX_PCMPEQDrr); break;
386 case X86::FsFLD0SS: LowerUnaryToTwoAddr(OutMI, X86::PXORrr); break;
387 case X86::V_SET0: LowerUnaryToTwoAddr(OutMI, X86::XORPSrr); break;
388 case X86::V_SETALLONES: LowerUnaryToTwoAddr(OutMI, X86::PCMPEQDrr); break;
391 LowerSubReg32_Op0(OutMI, X86::MOV32r0); // MOV16r0 -> MOV32r0
392 LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); // MOV32r0 -> XOR32rr
395 LowerSubReg32_Op0(OutMI, X86::MOV32r0); // MOV64r0 -> MOV32r0
396 LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); // MOV32r0 -> XOR32rr
403 void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) {
404 X86MCInstLower MCInstLowering(OutContext, Mang, *this);
405 switch (MI->getOpcode()) {
406 case TargetInstrInfo::DEBUG_VALUE: {
407 // FIXME: if this is implemented for another target before it goes
408 // away completely, the common part should be moved into AsmPrinter.
411 O << '\t' << MAI->getCommentString() << "DEBUG_VALUE: ";
412 unsigned NOps = MI->getNumOperands();
413 // cast away const; DIetc do not take const operands for some reason.
414 DIVariable V((MDNode*)(MI->getOperand(NOps-1).getMetadata()));
418 // Register or immediate value. Register 0 means undef.
419 assert(MI->getOperand(0).getType()==MachineOperand::MO_Register ||
420 MI->getOperand(0).getType()==MachineOperand::MO_Immediate ||
421 MI->getOperand(0).getType()==MachineOperand::MO_FPImmediate);
422 if (MI->getOperand(0).getType()==MachineOperand::MO_Register &&
423 MI->getOperand(0).getReg()==0) {
424 // Suppress offset in this case, it is not meaningful.
427 } else if (MI->getOperand(0).getType()==MachineOperand::MO_FPImmediate) {
428 // This is more naturally done in printOperand, but since the only use
429 // of such an operand is in this comment and that is temporary (and it's
430 // ugly), we prefer to keep this localized.
431 // The include of Type.h may be removable when this code is.
432 if (MI->getOperand(0).getFPImm()->getType()->isFloatTy() ||
433 MI->getOperand(0).getFPImm()->getType()->isDoubleTy())
434 MI->getOperand(0).print(O, &TM);
436 // There is no good way to print long double. Convert a copy to
437 // double. Ah well, it's only a comment.
439 APFloat APF = APFloat(MI->getOperand(0).getFPImm()->getValueAPF());
440 APF.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven,
442 O << "(long double) " << APF.convertToDouble();
447 // Frame address. Currently handles register +- offset only.
448 assert(MI->getOperand(0).getType()==MachineOperand::MO_Register);
449 assert(MI->getOperand(3).getType()==MachineOperand::MO_Immediate);
450 O << '['; printOperand(MI, 0); O << '+'; printOperand(MI, 3); O << ']';
453 printOperand(MI, NOps-2);
457 case X86::MOVPC32r: {
459 // This is a pseudo op for a two instruction sequence with a label, which
466 MCSymbol *PICBase = MCInstLowering.GetPICBaseSymbol();
467 TmpInst.setOpcode(X86::CALLpcrel32);
468 // FIXME: We would like an efficient form for this, so we don't have to do a
469 // lot of extra uniquing.
470 TmpInst.addOperand(MCOperand::CreateExpr(MCSymbolRefExpr::Create(PICBase,
472 OutStreamer.EmitInstruction(TmpInst);
475 OutStreamer.EmitLabel(PICBase);
478 TmpInst.setOpcode(X86::POP32r);
479 TmpInst.getOperand(0) = MCOperand::CreateReg(MI->getOperand(0).getReg());
480 OutStreamer.EmitInstruction(TmpInst);
485 // Lower the MO_GOT_ABSOLUTE_ADDRESS form of ADD32ri.
486 if (MI->getOperand(2).getTargetFlags() != X86II::MO_GOT_ABSOLUTE_ADDRESS)
489 // Okay, we have something like:
490 // EAX = ADD32ri EAX, MO_GOT_ABSOLUTE_ADDRESS(@MYGLOBAL)
492 // For this, we want to print something like:
493 // MYGLOBAL + (. - PICBASE)
494 // However, we can't generate a ".", so just emit a new label here and refer
495 // to it. We know that this operand flag occurs at most once per function.
496 const char *Prefix = MAI->getPrivateGlobalPrefix();
497 MCSymbol *DotSym = OutContext.GetOrCreateSymbol(Twine(Prefix)+"picbaseref"+
498 Twine(getFunctionNumber()));
499 OutStreamer.EmitLabel(DotSym);
501 // Now that we have emitted the label, lower the complex operand expression.
502 MCSymbol *OpSym = MCInstLowering.GetExternalSymbolSymbol(MI->getOperand(2));
504 const MCExpr *DotExpr = MCSymbolRefExpr::Create(DotSym, OutContext);
505 const MCExpr *PICBase =
506 MCSymbolRefExpr::Create(MCInstLowering.GetPICBaseSymbol(), OutContext);
507 DotExpr = MCBinaryExpr::CreateSub(DotExpr, PICBase, OutContext);
509 DotExpr = MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(OpSym,OutContext),
510 DotExpr, OutContext);
513 TmpInst.setOpcode(X86::ADD32ri);
514 TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(0).getReg()));
515 TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(1).getReg()));
516 TmpInst.addOperand(MCOperand::CreateExpr(DotExpr));
517 OutStreamer.EmitInstruction(TmpInst);
523 MCInstLowering.Lower(MI, TmpInst);
526 OutStreamer.EmitInstruction(TmpInst);