//
//===----------------------------------------------------------------------===//
-
-#include "X86ATTAsmPrinter.h"
+#include "X86MCInstLower.h"
+#include "X86AsmPrinter.h"
#include "X86MCAsmInfo.h"
+#include "X86COFFMachineModuleInfo.h"
+#include "llvm/Analysis/DebugInfo.h"
+#include "llvm/CodeGen/MachineModuleInfoImpls.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCStreamer.h"
+#include "llvm/Target/Mangler.h"
#include "llvm/Support/FormattedStream.h"
-#include "llvm/Support/Mangler.h"
#include "llvm/ADT/SmallString.h"
using namespace llvm;
-MCSymbol *X86ATTAsmPrinter::GetPICBaseSymbol() {
- // FIXME: the actual label generated doesn't matter here! Just mangle in
- // something unique (the function number) with Private prefix.
- SmallString<60> Name;
-
- if (Subtarget->isTargetDarwin()) {
- raw_svector_ostream(Name) << 'L' << getFunctionNumber() << "$pb";
- } else {
- assert(Subtarget->isTargetELF() && "Don't know how to print PIC label!");
- raw_svector_ostream(Name) << ".Lllvm$" << getFunctionNumber()<<".$piclabel";
- }
- return OutContext.GetOrCreateSymbol(Name.str());
-}
+const X86Subtarget &X86MCInstLower::getSubtarget() const {
+ return AsmPrinter.getSubtarget();
+}
-static void lower_subreg32(MCInst *MI, unsigned OpNo) {
- // Convert registers in the addr mode according to subreg32.
- unsigned Reg = MI->getOperand(OpNo).getReg();
- if (Reg != 0)
- MI->getOperand(OpNo).setReg(getX86SubSuperRegister(Reg, MVT::i32));
+MachineModuleInfoMachO &X86MCInstLower::getMachOMMI() const {
+ assert(getSubtarget().isTargetDarwin() &&"Can only get MachO info on darwin");
+ return AsmPrinter.MMI->getObjFileInfo<MachineModuleInfoMachO>();
}
-static void lower_lea64_32mem(MCInst *MI, unsigned OpNo) {
- // Convert registers in the addr mode according to subreg64.
- for (unsigned i = 0; i != 4; ++i) {
- if (!MI->getOperand(OpNo+i).isReg()) continue;
-
- unsigned Reg = MI->getOperand(OpNo+i).getReg();
- if (Reg == 0) continue;
-
- MI->getOperand(OpNo+i).setReg(getX86SubSuperRegister(Reg, MVT::i64));
- }
+MCSymbol *X86MCInstLower::GetPICBaseSymbol() const {
+ const TargetLowering *TLI = AsmPrinter.TM.getTargetLowering();
+ return static_cast<const X86TargetLowering*>(TLI)->
+ getPICBaseSymbol(AsmPrinter.MF, Ctx);
}
/// LowerGlobalAddressOperand - Lower an MO_GlobalAddress operand to an
/// MCOperand.
-MCSymbol *X86ATTAsmPrinter::GetGlobalAddressSymbol(const MachineOperand &MO) {
+MCSymbol *X86MCInstLower::
+GetGlobalAddressSymbol(const MachineOperand &MO) const {
const GlobalValue *GV = MO.getGlobal();
- const char *Suffix = "";
- if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB)
- Suffix = "$stub";
- else if (MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY ||
- MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE ||
- MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE)
- Suffix = "$non_lazy_ptr";
+ bool isImplicitlyPrivate = false;
+ if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB ||
+ MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY ||
+ MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE ||
+ MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE)
+ isImplicitlyPrivate = true;
- std::string Name = Mang->getMangledName(GV, Suffix, Suffix[0] != '\0');
- if (Subtarget->isTargetCygMing())
- DecorateCygMingName(Name, GV);
+ SmallString<128> Name;
+ Mang->getNameWithPrefix(Name, GV, isImplicitlyPrivate);
+
+ if (getSubtarget().isTargetCygMing()) {
+ X86COFFMachineModuleInfo &COFFMMI =
+ AsmPrinter.MMI->getObjFileInfo<X86COFFMachineModuleInfo>();
+ COFFMMI.DecorateCygMingName(Name, GV, *AsmPrinter.TM.getTargetData());
+ }
switch (MO.getTargetFlags()) {
default: llvm_unreachable("Unknown target flag on GV operand");
case X86II::MO_NO_FLAG: // No flag.
- case X86II::MO_GOT_ABSOLUTE_ADDRESS: // Doesn't modify symbol name.
case X86II::MO_PIC_BASE_OFFSET: // Doesn't modify symbol name.
break;
- case X86II::MO_DLLIMPORT:
+ case X86II::MO_DLLIMPORT: {
// Handle dllimport linkage.
- Name = "__imp_" + Name;
+ const char *Prefix = "__imp_";
+ Name.insert(Name.begin(), Prefix, Prefix+strlen(Prefix));
break;
+ }
case X86II::MO_DARWIN_NONLAZY:
- case X86II::MO_DARWIN_NONLAZY_PIC_BASE:
- GVStubs[Name] = Mang->getMangledName(GV);
- break;
- case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE:
- HiddenGVStubs[Name] = Mang->getMangledName(GV);
- break;
- case X86II::MO_DARWIN_STUB:
- FnStubs[Name] = Mang->getMangledName(GV);
- break;
+ case X86II::MO_DARWIN_NONLAZY_PIC_BASE: {
+ Name += "$non_lazy_ptr";
+ MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
+
+ const MCSymbol *&StubSym = getMachOMMI().getGVStubEntry(Sym);
+ if (StubSym == 0)
+ StubSym = AsmPrinter.GetGlobalValueSymbol(GV);
+ return Sym;
+ }
+ case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE: {
+ Name += "$non_lazy_ptr";
+ MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
+ const MCSymbol *&StubSym = getMachOMMI().getHiddenGVStubEntry(Sym);
+ if (StubSym == 0)
+ StubSym = AsmPrinter.GetGlobalValueSymbol(GV);
+ return Sym;
+ }
+ case X86II::MO_DARWIN_STUB: {
+ Name += "$stub";
+ MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
+ const MCSymbol *&StubSym = getMachOMMI().getFnStubEntry(Sym);
+ if (StubSym == 0)
+ StubSym = AsmPrinter.GetGlobalValueSymbol(GV);
+ return Sym;
+ }
// FIXME: These probably should be a modifier on the symbol or something??
case X86II::MO_TLSGD: Name += "@TLSGD"; break;
case X86II::MO_GOTTPOFF: Name += "@GOTTPOFF"; break;
case X86II::MO_PLT: Name += "@PLT"; break;
}
- return OutContext.GetOrCreateSymbol(Name);
+ return Ctx.GetOrCreateSymbol(Name.str());
}
-MCSymbol *X86ATTAsmPrinter::GetExternalSymbolSymbol(const MachineOperand &MO) {
- std::string Name = Mang->makeNameProper(MO.getSymbolName());
- if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB)
- Name += "$stub";
+MCSymbol *X86MCInstLower::
+GetExternalSymbolSymbol(const MachineOperand &MO) const {
+ SmallString<128> Name;
+ Name += AsmPrinter.MAI->getGlobalPrefix();
+ Name += MO.getSymbolName();
switch (MO.getTargetFlags()) {
default: llvm_unreachable("Unknown target flag on GV operand");
case X86II::MO_GOT_ABSOLUTE_ADDRESS: // Doesn't modify symbol name.
case X86II::MO_PIC_BASE_OFFSET: // Doesn't modify symbol name.
break;
- case X86II::MO_DLLIMPORT:
+ case X86II::MO_DLLIMPORT: {
// Handle dllimport linkage.
- Name = "__imp_" + Name;
+ const char *Prefix = "__imp_";
+ Name.insert(Name.begin(), Prefix, Prefix+strlen(Prefix));
break;
- case X86II::MO_DARWIN_STUB:
- FnStubs[Name] = Mang->makeNameProper(MO.getSymbolName());
- break;
- // FIXME: These probably should be a modifier on the symbol or something??
+ }
+ case X86II::MO_DARWIN_STUB: {
+ Name += "$stub";
+ MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
+ const MCSymbol *&StubSym = getMachOMMI().getFnStubEntry(Sym);
+
+ if (StubSym == 0) {
+ Name.erase(Name.end()-5, Name.end());
+ StubSym = Ctx.GetOrCreateSymbol(Name.str());
+ }
+ return Sym;
+ }
+ // FIXME: These probably should be a modifier on the symbol or something??
case X86II::MO_TLSGD: Name += "@TLSGD"; break;
case X86II::MO_GOTTPOFF: Name += "@GOTTPOFF"; break;
case X86II::MO_INDNTPOFF: Name += "@INDNTPOFF"; break;
case X86II::MO_PLT: Name += "@PLT"; break;
}
- return OutContext.GetOrCreateSymbol(Name);
+ return Ctx.GetOrCreateSymbol(Name.str());
}
-MCSymbol *X86ATTAsmPrinter::GetJumpTableSymbol(const MachineOperand &MO) {
+MCSymbol *X86MCInstLower::GetJumpTableSymbol(const MachineOperand &MO) const {
SmallString<256> Name;
- raw_svector_ostream(Name) << MAI->getPrivateGlobalPrefix() << "JTI"
- << getFunctionNumber() << '_' << MO.getIndex();
+ // FIXME: Use AsmPrinter.GetJTISymbol. @TLSGD shouldn't be part of the symbol
+ // name!
+ raw_svector_ostream(Name) << AsmPrinter.MAI->getPrivateGlobalPrefix() << "JTI"
+ << AsmPrinter.getFunctionNumber() << '_' << MO.getIndex();
switch (MO.getTargetFlags()) {
default:
}
// Create a symbol for the name.
- return OutContext.GetOrCreateSymbol(Name.str());
+ return Ctx.GetOrCreateSymbol(Name.str());
}
-MCSymbol *X86ATTAsmPrinter::
-GetConstantPoolIndexSymbol(const MachineOperand &MO) {
+MCSymbol *X86MCInstLower::
+GetConstantPoolIndexSymbol(const MachineOperand &MO) const {
SmallString<256> Name;
- raw_svector_ostream(Name) << MAI->getPrivateGlobalPrefix() << "CPI"
- << getFunctionNumber() << '_' << MO.getIndex();
+ // FIXME: USe AsmPrinter.GetCPISymbol. @TLSGD shouldn't be part of the symbol
+ // name!
+ raw_svector_ostream(Name) << AsmPrinter.MAI->getPrivateGlobalPrefix() << "CPI"
+ << AsmPrinter.getFunctionNumber() << '_' << MO.getIndex();
switch (MO.getTargetFlags()) {
default:
}
// Create a symbol for the name.
- return OutContext.GetOrCreateSymbol(Name.str());
+ return Ctx.GetOrCreateSymbol(Name.str());
}
-MCOperand X86ATTAsmPrinter::LowerSymbolOperand(const MachineOperand &MO,
- MCSymbol *Sym) {
+MCSymbol *X86MCInstLower::
+GetBlockAddressSymbol(const MachineOperand &MO) const {
+ const char *Suffix = "";
+ switch (MO.getTargetFlags()) {
+ default: llvm_unreachable("Unknown target flag on BA operand");
+ case X86II::MO_NO_FLAG: break; // No flag.
+ case X86II::MO_PIC_BASE_OFFSET: break; // Doesn't modify symbol name.
+ case X86II::MO_GOTOFF: Suffix = "@GOTOFF"; break;
+ }
+
+ return AsmPrinter.GetBlockAddressSymbol(MO.getBlockAddress(), Suffix);
+}
+
+MCOperand X86MCInstLower::LowerSymbolOperand(const MachineOperand &MO,
+ MCSymbol *Sym) const {
// FIXME: We would like an efficient form for this, so we don't have to do a
// lot of extra uniquing.
- const MCExpr *Expr = MCSymbolRefExpr::Create(Sym, OutContext);
+ const MCExpr *Expr = MCSymbolRefExpr::Create(Sym, Ctx);
switch (MO.getTargetFlags()) {
default: llvm_unreachable("Unknown target flag on GV operand");
case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE:
// Subtract the pic base.
Expr = MCBinaryExpr::CreateSub(Expr,
- MCSymbolRefExpr::Create(GetPICBaseSymbol(),
- OutContext),
- OutContext);
+ MCSymbolRefExpr::Create(GetPICBaseSymbol(), Ctx),
+ Ctx);
break;
- case X86II::MO_GOT_ABSOLUTE_ADDRESS: {
- // For this, we want to print something like:
- // MYSYMBOL + (. - PICBASE)
- // However, we can't generate a ".", so just emit a new label here and refer
- // to it. We know that this operand flag occurs at most once per function.
- SmallString<64> Name;
- raw_svector_ostream(Name) << MAI->getPrivateGlobalPrefix() << "picbaseref"
- << getFunctionNumber();
- MCSymbol *DotSym = OutContext.GetOrCreateSymbol(Name.str());
- OutStreamer.EmitLabel(DotSym);
-
- const MCExpr *DotExpr = MCSymbolRefExpr::Create(DotSym, OutContext);
- const MCExpr *PICBase = MCSymbolRefExpr::Create(GetPICBaseSymbol(),
- OutContext);
- DotExpr = MCBinaryExpr::CreateSub(DotExpr, PICBase, OutContext);
- Expr = MCBinaryExpr::CreateAdd(Expr, DotExpr, OutContext);
- break;
- }
}
if (!MO.isJTI() && MO.getOffset())
- Expr = MCBinaryExpr::CreateAdd(Expr, MCConstantExpr::Create(MO.getOffset(),
- OutContext),
- OutContext);
+ Expr = MCBinaryExpr::CreateAdd(Expr,
+ MCConstantExpr::Create(MO.getOffset(), Ctx),
+ Ctx);
return MCOperand::CreateExpr(Expr);
}
-void X86ATTAsmPrinter::
-printInstructionThroughMCStreamer(const MachineInstr *MI) {
- MCInst TmpInst;
- switch (MI->getOpcode()) {
- case TargetInstrInfo::DBG_LABEL:
- case TargetInstrInfo::EH_LABEL:
- case TargetInstrInfo::GC_LABEL:
- printLabel(MI);
- return;
- case TargetInstrInfo::INLINEASM:
- O << '\t';
- printInlineAsm(MI);
- return;
- case TargetInstrInfo::IMPLICIT_DEF:
- printImplicitDef(MI);
- return;
- case X86::MOVPC32r: {
- // This is a pseudo op for a two instruction sequence with a label, which
- // looks like:
- // call "L1$pb"
- // "L1$pb":
- // popl %esi
-
- // Emit the call.
- MCSymbol *PICBase = GetPICBaseSymbol();
- TmpInst.setOpcode(X86::CALLpcrel32);
- // FIXME: We would like an efficient form for this, so we don't have to do a
- // lot of extra uniquing.
- TmpInst.addOperand(MCOperand::CreateExpr(MCSymbolRefExpr::Create(PICBase,
- OutContext)));
- printInstruction(&TmpInst);
+
+
+static void lower_subreg32(MCInst *MI, unsigned OpNo) {
+ // Convert registers in the addr mode according to subreg32.
+ unsigned Reg = MI->getOperand(OpNo).getReg();
+ if (Reg != 0)
+ MI->getOperand(OpNo).setReg(getX86SubSuperRegister(Reg, MVT::i32));
+}
+
+static void lower_lea64_32mem(MCInst *MI, unsigned OpNo) {
+ // Convert registers in the addr mode according to subreg64.
+ for (unsigned i = 0; i != 4; ++i) {
+ if (!MI->getOperand(OpNo+i).isReg()) continue;
- // Emit the label.
- OutStreamer.EmitLabel(PICBase);
+ unsigned Reg = MI->getOperand(OpNo+i).getReg();
+ if (Reg == 0) continue;
- // popl $reg
- TmpInst.setOpcode(X86::POP32r);
- TmpInst.getOperand(0) = MCOperand::CreateReg(MI->getOperand(0).getReg());
- printInstruction(&TmpInst);
- return;
- }
+ MI->getOperand(OpNo+i).setReg(getX86SubSuperRegister(Reg, MVT::i64));
}
-
- TmpInst.setOpcode(MI->getOpcode());
+}
+
+
+
+void X86MCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
+ OutMI.setOpcode(MI->getOpcode());
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &MO = MI->getOperand(i);
MCOperand MCOp;
switch (MO.getType()) {
default:
- O.flush();
- errs() << "Cannot lower operand #" << i << " of :" << *MI;
- llvm_unreachable("Unimp");
+ MI->dump();
+ llvm_unreachable("unknown operand type");
case MachineOperand::MO_Register:
+ // Ignore all implicit register operands.
+ if (MO.isImplicit()) continue;
MCOp = MCOperand::CreateReg(MO.getReg());
break;
case MachineOperand::MO_Immediate:
MCOp = MCOperand::CreateImm(MO.getImm());
break;
case MachineOperand::MO_MachineBasicBlock:
- MCOp = MCOperand::CreateMBBLabel(getFunctionNumber(),
- MO.getMBB()->getNumber());
+ MCOp = MCOperand::CreateExpr(MCSymbolRefExpr::Create(
+ MO.getMBB()->getSymbol(Ctx), Ctx));
break;
case MachineOperand::MO_GlobalAddress:
MCOp = LowerSymbolOperand(MO, GetGlobalAddressSymbol(MO));
case MachineOperand::MO_ConstantPoolIndex:
MCOp = LowerSymbolOperand(MO, GetConstantPoolIndexSymbol(MO));
break;
+ case MachineOperand::MO_BlockAddress:
+ MCOp = LowerSymbolOperand(MO, GetBlockAddressSymbol(MO));
+ break;
}
- TmpInst.addOperand(MCOp);
+ OutMI.addOperand(MCOp);
}
- switch (TmpInst.getOpcode()) {
- case X86::LEA64_32r:
- // Handle the 'subreg rewriting' for the lea64_32mem operand.
- lower_lea64_32mem(&TmpInst, 1);
- break;
- case X86::MOV16r0:
- TmpInst.setOpcode(X86::MOV32r0);
- lower_subreg32(&TmpInst, 0);
+ // Handle a few special cases to eliminate operand modifiers.
+ switch (OutMI.getOpcode()) {
+ case X86::LEA64_32r: // Handle 'subreg rewriting' for the lea64_32mem operand.
+ lower_lea64_32mem(&OutMI, 1);
break;
case X86::MOVZX16rr8:
- TmpInst.setOpcode(X86::MOVZX32rr8);
- lower_subreg32(&TmpInst, 0);
+ OutMI.setOpcode(X86::MOVZX32rr8);
+ lower_subreg32(&OutMI, 0);
break;
case X86::MOVZX16rm8:
- TmpInst.setOpcode(X86::MOVZX32rm8);
- lower_subreg32(&TmpInst, 0);
+ OutMI.setOpcode(X86::MOVZX32rm8);
+ lower_subreg32(&OutMI, 0);
break;
case X86::MOVSX16rr8:
- TmpInst.setOpcode(X86::MOVSX32rr8);
- lower_subreg32(&TmpInst, 0);
+ OutMI.setOpcode(X86::MOVSX32rr8);
+ lower_subreg32(&OutMI, 0);
break;
case X86::MOVSX16rm8:
- TmpInst.setOpcode(X86::MOVSX32rm8);
- lower_subreg32(&TmpInst, 0);
+ OutMI.setOpcode(X86::MOVSX32rm8);
+ lower_subreg32(&OutMI, 0);
break;
case X86::MOVZX64rr32:
- TmpInst.setOpcode(X86::MOV32rr);
- lower_subreg32(&TmpInst, 0);
+ OutMI.setOpcode(X86::MOV32rr);
+ lower_subreg32(&OutMI, 0);
break;
case X86::MOVZX64rm32:
- TmpInst.setOpcode(X86::MOV32rm);
- lower_subreg32(&TmpInst, 0);
+ OutMI.setOpcode(X86::MOV32rm);
+ lower_subreg32(&OutMI, 0);
break;
case X86::MOV64ri64i32:
- TmpInst.setOpcode(X86::MOV32ri);
- lower_subreg32(&TmpInst, 0);
+ OutMI.setOpcode(X86::MOV32ri);
+ lower_subreg32(&OutMI, 0);
break;
case X86::MOVZX64rr8:
- TmpInst.setOpcode(X86::MOVZX32rr8);
- lower_subreg32(&TmpInst, 0);
+ OutMI.setOpcode(X86::MOVZX32rr8);
+ lower_subreg32(&OutMI, 0);
break;
case X86::MOVZX64rm8:
- TmpInst.setOpcode(X86::MOVZX32rm8);
- lower_subreg32(&TmpInst, 0);
+ OutMI.setOpcode(X86::MOVZX32rm8);
+ lower_subreg32(&OutMI, 0);
break;
case X86::MOVZX64rr16:
- TmpInst.setOpcode(X86::MOVZX32rr16);
- lower_subreg32(&TmpInst, 0);
+ OutMI.setOpcode(X86::MOVZX32rr16);
+ lower_subreg32(&OutMI, 0);
break;
case X86::MOVZX64rm16:
- TmpInst.setOpcode(X86::MOVZX32rm16);
- lower_subreg32(&TmpInst, 0);
+ OutMI.setOpcode(X86::MOVZX32rm16);
+ lower_subreg32(&OutMI, 0);
+ break;
+ case X86::MOV16r0:
+ OutMI.setOpcode(X86::MOV32r0);
+ lower_subreg32(&OutMI, 0);
+ break;
+ case X86::MOV64r0:
+ OutMI.setOpcode(X86::MOV32r0);
+ lower_subreg32(&OutMI, 0);
break;
}
+}
+
+
+
+void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) {
+ X86MCInstLower MCInstLowering(OutContext, Mang, *this);
+ switch (MI->getOpcode()) {
+ case TargetInstrInfo::DEBUG_VALUE: {
+ // FIXME: if this is implemented for another target before it goes
+ // away completely, the common part should be moved into AsmPrinter.
+ if (!VerboseAsm)
+ return;
+ O << '\t' << MAI->getCommentString() << "DEBUG_VALUE: ";
+ unsigned NOps = MI->getNumOperands();
+ // cast away const; DIetc do not take const operands for some reason.
+ DIVariable V((MDNode*)(MI->getOperand(NOps-1).getMetadata()));
+ O << V.getName();
+ O << " <- ";
+ if (NOps==3) {
+ // Register or immediate value. Register 0 means undef.
+ assert(MI->getOperand(0).getType()==MachineOperand::MO_Register ||
+ MI->getOperand(0).getType()==MachineOperand::MO_Immediate ||
+ MI->getOperand(0).getType()==MachineOperand::MO_FPImmediate);
+ if (MI->getOperand(0).getType()==MachineOperand::MO_Register &&
+ MI->getOperand(0).getReg()==0) {
+ // Suppress offset in this case, it is not meaningful.
+ O << "undef";
+ return;
+ } else if (MI->getOperand(0).getType()==MachineOperand::MO_FPImmediate) {
+ // This is more naturally done in printOperand, but since the only use
+ // of such an operand is in this comment and that is temporary, we
+ // prefer to keep this localized.
+ O << '$';
+ MI->getOperand(0).print(O, &TM);
+ } else
+ printOperand(MI, 0);
+ } else {
+ // Frame address. Currently handles register +- offset only.
+ assert(MI->getOperand(0).getType()==MachineOperand::MO_Register);
+ assert(MI->getOperand(3).getType()==MachineOperand::MO_Immediate);
+ O << '['; printOperand(MI, 0); O << '+'; printOperand(MI, 3); O << ']';
+ }
+ O << "+";
+ printOperand(MI, NOps-2);
+ O << '\n';
+ return;
+ }
+ case X86::MOVPC32r: {
+ MCInst TmpInst;
+ // This is a pseudo op for a two instruction sequence with a label, which
+ // looks like:
+ // call "L1$pb"
+ // "L1$pb":
+ // popl %esi
+
+ // Emit the call.
+ MCSymbol *PICBase = MCInstLowering.GetPICBaseSymbol();
+ TmpInst.setOpcode(X86::CALLpcrel32);
+ // FIXME: We would like an efficient form for this, so we don't have to do a
+ // lot of extra uniquing.
+ TmpInst.addOperand(MCOperand::CreateExpr(MCSymbolRefExpr::Create(PICBase,
+ OutContext)));
+ OutStreamer.EmitInstruction(TmpInst);
+
+ // Emit the label.
+ OutStreamer.EmitLabel(PICBase);
+
+ // popl $reg
+ TmpInst.setOpcode(X86::POP32r);
+ TmpInst.getOperand(0) = MCOperand::CreateReg(MI->getOperand(0).getReg());
+ OutStreamer.EmitInstruction(TmpInst);
+ return;
+ }
+
+ case X86::ADD32ri: {
+ // Lower the MO_GOT_ABSOLUTE_ADDRESS form of ADD32ri.
+ if (MI->getOperand(2).getTargetFlags() != X86II::MO_GOT_ABSOLUTE_ADDRESS)
+ break;
+
+ // Okay, we have something like:
+ // EAX = ADD32ri EAX, MO_GOT_ABSOLUTE_ADDRESS(@MYGLOBAL)
+
+ // For this, we want to print something like:
+ // MYGLOBAL + (. - PICBASE)
+ // However, we can't generate a ".", so just emit a new label here and refer
+ // to it. We know that this operand flag occurs at most once per function.
+ const char *Prefix = MAI->getPrivateGlobalPrefix();
+ MCSymbol *DotSym = OutContext.GetOrCreateSymbol(Twine(Prefix)+"picbaseref"+
+ Twine(getFunctionNumber()));
+ OutStreamer.EmitLabel(DotSym);
+
+ // Now that we have emitted the label, lower the complex operand expression.
+ MCSymbol *OpSym = MCInstLowering.GetExternalSymbolSymbol(MI->getOperand(2));
+
+ const MCExpr *DotExpr = MCSymbolRefExpr::Create(DotSym, OutContext);
+ const MCExpr *PICBase =
+ MCSymbolRefExpr::Create(MCInstLowering.GetPICBaseSymbol(), OutContext);
+ DotExpr = MCBinaryExpr::CreateSub(DotExpr, PICBase, OutContext);
+
+ DotExpr = MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(OpSym,OutContext),
+ DotExpr, OutContext);
+
+ MCInst TmpInst;
+ TmpInst.setOpcode(X86::ADD32ri);
+ TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(0).getReg()));
+ TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(1).getReg()));
+ TmpInst.addOperand(MCOperand::CreateExpr(DotExpr));
+ OutStreamer.EmitInstruction(TmpInst);
+ return;
+ }
+ }
+
+ MCInst TmpInst;
+ MCInstLowering.Lower(MI, TmpInst);
- printInstruction(&TmpInst);
+
+ OutStreamer.EmitInstruction(TmpInst);
}
+
projects / oota-llvm.git / blobdiff