#include "InstPrinter/X86ATTInstPrinter.h"
#include "MCTargetDesc/X86BaseInfo.h"
#include "Utils/X86ShuffleDecode.h"
+#include "llvm/ADT/Optional.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineConstantPool.h"
public:
X86MCInstLower(const MachineFunction &MF, X86AsmPrinter &asmprinter);
+ Optional<MCOperand> LowerMachineOperand(const MachineInstr *MI,
+ const MachineOperand &MO) const;
void Lower(const MachineInstr *MI, MCInst &OutMI) const;
MCSymbol *GetSymbolFromOperand(const MachineOperand &MO) const;
const DataLayout *DL = TM.getDataLayout();
assert((MO.isGlobal() || MO.isSymbol() || MO.isMBB()) && "Isn't a symbol reference");
+ MCSymbol *Sym = nullptr;
SmallString<128> Name;
StringRef Suffix;
const GlobalValue *GV = MO.getGlobal();
AsmPrinter.getNameWithPrefix(Name, GV);
} else if (MO.isSymbol()) {
- if (MO.getTargetFlags() == X86II::MO_NOPREFIX)
- Name += MO.getSymbolName();
- else
- getMang()->getNameWithPrefix(Name, MO.getSymbolName());
+ getMang()->getNameWithPrefix(Name, MO.getSymbolName());
} else if (MO.isMBB()) {
- Name += MO.getMBB()->getSymbol()->getName();
+ assert(Suffix.empty());
+ Sym = MO.getMBB()->getSymbol();
}
unsigned OrigLen = Name.size() - PrefixLen;
Name += Suffix;
- MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name);
+ if (!Sym)
+ Sym = Ctx.getOrCreateSymbol(Name);
StringRef OrigName = StringRef(Name).substr(PrefixLen, OrigLen);
} else {
StubSym =
MachineModuleInfoImpl::
- StubValueTy(Ctx.GetOrCreateSymbol(OrigName), false);
+ StubValueTy(Ctx.getOrCreateSymbol(OrigName), false);
}
break;
}
case X86II::MO_DARWIN_NONLAZY:
case X86II::MO_DLLIMPORT:
case X86II::MO_DARWIN_STUB:
- case X86II::MO_NOPREFIX:
break;
case X86II::MO_TLVP: RefKind = MCSymbolRefExpr::VK_TLVP; break;
case X86II::MO_TLVP_PIC_BASE:
- Expr = MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_TLVP, Ctx);
+ Expr = MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_TLVP, Ctx);
// Subtract the pic base.
- Expr = MCBinaryExpr::CreateSub(Expr,
- MCSymbolRefExpr::Create(MF.getPICBaseSymbol(),
+ Expr = MCBinaryExpr::createSub(Expr,
+ MCSymbolRefExpr::create(MF.getPICBaseSymbol(),
Ctx),
Ctx);
break;
case X86II::MO_PIC_BASE_OFFSET:
case X86II::MO_DARWIN_NONLAZY_PIC_BASE:
case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE:
- Expr = MCSymbolRefExpr::Create(Sym, Ctx);
+ Expr = MCSymbolRefExpr::create(Sym, Ctx);
// Subtract the pic base.
- Expr = MCBinaryExpr::CreateSub(Expr,
- MCSymbolRefExpr::Create(MF.getPICBaseSymbol(), Ctx),
+ Expr = MCBinaryExpr::createSub(Expr,
+ MCSymbolRefExpr::create(MF.getPICBaseSymbol(), Ctx),
Ctx);
if (MO.isJTI()) {
assert(MAI.doesSetDirectiveSuppressesReloc());
// relocations the assembler will generate for differences between
// local labels. This is only safe when the symbols are in the same
// section so we are restricting it to jumptable references.
- MCSymbol *Label = Ctx.CreateTempSymbol();
+ MCSymbol *Label = Ctx.createTempSymbol();
AsmPrinter.OutStreamer->EmitAssignment(Label, Expr);
- Expr = MCSymbolRefExpr::Create(Label, Ctx);
+ Expr = MCSymbolRefExpr::create(Label, Ctx);
}
break;
}
if (!Expr)
- Expr = MCSymbolRefExpr::Create(Sym, RefKind, Ctx);
+ Expr = MCSymbolRefExpr::create(Sym, RefKind, Ctx);
if (!MO.isJTI() && !MO.isMBB() && MO.getOffset())
- Expr = MCBinaryExpr::CreateAdd(Expr,
- MCConstantExpr::Create(MO.getOffset(), Ctx),
+ Expr = MCBinaryExpr::createAdd(Expr,
+ MCConstantExpr::create(MO.getOffset(), Ctx),
Ctx);
return MCOperand::createExpr(Expr);
}
return Subtarget.is64Bit() ? X86::RETQ : X86::RETL;
}
+Optional<MCOperand>
+X86MCInstLower::LowerMachineOperand(const MachineInstr *MI,
+ const MachineOperand &MO) const {
+ switch (MO.getType()) {
+ default:
+ MI->dump();
+ llvm_unreachable("unknown operand type");
+ case MachineOperand::MO_Register:
+ // Ignore all implicit register operands.
+ if (MO.isImplicit())
+ return None;
+ return MCOperand::createReg(MO.getReg());
+ case MachineOperand::MO_Immediate:
+ return MCOperand::createImm(MO.getImm());
+ case MachineOperand::MO_MachineBasicBlock:
+ case MachineOperand::MO_GlobalAddress:
+ case MachineOperand::MO_ExternalSymbol:
+ return LowerSymbolOperand(MO, GetSymbolFromOperand(MO));
+ case MachineOperand::MO_MCSymbol:
+ return LowerSymbolOperand(MO, MO.getMCSymbol());
+ case MachineOperand::MO_JumpTableIndex:
+ return LowerSymbolOperand(MO, AsmPrinter.GetJTISymbol(MO.getIndex()));
+ case MachineOperand::MO_ConstantPoolIndex:
+ return LowerSymbolOperand(MO, AsmPrinter.GetCPISymbol(MO.getIndex()));
+ case MachineOperand::MO_BlockAddress:
+ return LowerSymbolOperand(
+ MO, AsmPrinter.GetBlockAddressSymbol(MO.getBlockAddress()));
+ case MachineOperand::MO_RegisterMask:
+ // Ignore call clobbers.
+ return None;
+ }
+}
+
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:
- 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:
- case MachineOperand::MO_GlobalAddress:
- case MachineOperand::MO_ExternalSymbol:
- MCOp = LowerSymbolOperand(MO, GetSymbolFromOperand(MO));
- break;
- case MachineOperand::MO_JumpTableIndex:
- MCOp = LowerSymbolOperand(MO, AsmPrinter.GetJTISymbol(MO.getIndex()));
- break;
- case MachineOperand::MO_ConstantPoolIndex:
- MCOp = LowerSymbolOperand(MO, AsmPrinter.GetCPISymbol(MO.getIndex()));
- break;
- case MachineOperand::MO_BlockAddress:
- MCOp = LowerSymbolOperand(MO,
- AsmPrinter.GetBlockAddressSymbol(MO.getBlockAddress()));
- break;
- case MachineOperand::MO_RegisterMask:
- // Ignore call clobbers.
- continue;
- }
-
- OutMI.addOperand(MCOp);
- }
+ for (const MachineOperand &MO : MI->operands())
+ if (auto MaybeMCOp = LowerMachineOperand(MI, MO))
+ OutMI.addOperand(MaybeMCOp.getValue());
// Handle a few special cases to eliminate operand modifiers.
ReSimplify:
}
MCSymbol *sym = MCInstLowering.GetSymbolFromOperand(MI.getOperand(3));
- const MCSymbolRefExpr *symRef = MCSymbolRefExpr::Create(sym, SRVK, context);
+ const MCSymbolRefExpr *symRef = MCSymbolRefExpr::create(sym, SRVK, context);
MCInst LEA;
if (is64Bits) {
}
StringRef name = is64Bits ? "__tls_get_addr" : "___tls_get_addr";
- MCSymbol *tlsGetAddr = context.GetOrCreateSymbol(name);
+ MCSymbol *tlsGetAddr = context.getOrCreateSymbol(name);
const MCSymbolRefExpr *tlsRef =
- MCSymbolRefExpr::Create(tlsGetAddr,
+ MCSymbolRefExpr::create(tlsGetAddr,
MCSymbolRefExpr::VK_PLT,
context);
SM.recordStatepoint(MI);
}
+void X86AsmPrinter::LowerFAULTING_LOAD_OP(const MachineInstr &MI,
+ X86MCInstLower &MCIL) {
+ // FAULTING_LOAD_OP <def>, <handler label>, <load opcode>, <load operands>
+
+ unsigned LoadDefRegister = MI.getOperand(0).getReg();
+ MCSymbol *HandlerLabel = MI.getOperand(1).getMCSymbol();
+ unsigned LoadOpcode = MI.getOperand(2).getImm();
+ unsigned LoadOperandsBeginIdx = 3;
+
+ FM.recordFaultingOp(FaultMaps::FaultingLoad, HandlerLabel);
+
+ MCInst LoadMI;
+ LoadMI.setOpcode(LoadOpcode);
+ LoadMI.addOperand(MCOperand::createReg(LoadDefRegister));
+ for (auto I = MI.operands_begin() + LoadOperandsBeginIdx,
+ E = MI.operands_end();
+ I != E; ++I)
+ if (auto MaybeOperand = MCIL.LowerMachineOperand(&MI, *I))
+ LoadMI.addOperand(MaybeOperand.getValue());
+
+ OutStreamer->EmitInstruction(LoadMI, getSubtargetInfo());
+}
// Lower a stackmap of the form:
// <id>, <shadowBytes>, ...
// FIXME: We would like an efficient form for this, so we don't have to do a
// lot of extra uniquing.
EmitAndCountInstruction(MCInstBuilder(X86::CALLpcrel32)
- .addExpr(MCSymbolRefExpr::Create(PICBase, OutContext)));
+ .addExpr(MCSymbolRefExpr::create(PICBase, OutContext)));
// Emit the label.
OutStreamer->EmitLabel(PICBase);
// MYGLOBAL + (. - PICBASE)
// However, we can't generate a ".", so just emit a new label here and refer
// to it.
- MCSymbol *DotSym = OutContext.CreateTempSymbol();
+ MCSymbol *DotSym = OutContext.createTempSymbol();
OutStreamer->EmitLabel(DotSym);
// Now that we have emitted the label, lower the complex operand expression.
MCSymbol *OpSym = MCInstLowering.GetSymbolFromOperand(MI->getOperand(2));
- const MCExpr *DotExpr = MCSymbolRefExpr::Create(DotSym, OutContext);
+ const MCExpr *DotExpr = MCSymbolRefExpr::create(DotSym, OutContext);
const MCExpr *PICBase =
- MCSymbolRefExpr::Create(MF->getPICBaseSymbol(), OutContext);
- DotExpr = MCBinaryExpr::CreateSub(DotExpr, PICBase, OutContext);
+ MCSymbolRefExpr::create(MF->getPICBaseSymbol(), OutContext);
+ DotExpr = MCBinaryExpr::createSub(DotExpr, PICBase, OutContext);
- DotExpr = MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(OpSym,OutContext),
+ DotExpr = MCBinaryExpr::createAdd(MCSymbolRefExpr::create(OpSym,OutContext),
DotExpr, OutContext);
EmitAndCountInstruction(MCInstBuilder(X86::ADD32ri)
case TargetOpcode::STATEPOINT:
return LowerSTATEPOINT(*MI, MCInstLowering);
+ case TargetOpcode::FAULTING_LOAD_OP:
+ return LowerFAULTING_LOAD_OP(*MI, MCInstLowering);
+
case TargetOpcode::STACKMAP:
return LowerSTACKMAP(*MI);
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