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more simplifications.

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llvm-svn: 119067
This commit is contained in:
Chris Lattner 2010-11-14 20:40:08 +00:00
parent 2393da7c40
commit 758bc06aff
2 changed files with 27 additions and 101 deletions
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119
lib/Target/ARM/ARMMCInstLower.cpp
View File

@ -30,100 +30,33 @@ MCSymbol *ARMMCInstLower::GetGlobalAddressSymbol(const GlobalValue *GV) const {
return Printer.Mang->getSymbol(GV);
}
const MCSymbolRefExpr *ARMMCInstLower::
GetSymbolRef(const MachineOperand &MO) const {
assert(MO.isGlobal() && "Isn't a global address reference?");
const MCSymbolRefExpr *SymRef;
const MCSymbol *Symbol = GetGlobalAddressSymbol(MO.getGlobal());
switch (MO.getTargetFlags()) {
default: assert(0 && "Unknown target flag on GV operand");
case 0:
SymRef = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None, Ctx);
break;
case ARMII::MO_LO16:
SymRef = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_LO16, Ctx);
break;
case ARMII::MO_HI16:
SymRef = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_HI16, Ctx);
break;
case ARMII::MO_PLT:
SymRef = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_PLT, Ctx);
break;
}
return SymRef;
}
const MCSymbolRefExpr *ARMMCInstLower::
GetExternalSymbolSymbol(const MachineOperand &MO) const {
const MCSymbolRefExpr *SymRef;
const MCSymbol *Symbol = Printer.GetExternalSymbolSymbol(MO.getSymbolName());
switch (MO.getTargetFlags()) {
default: assert(0 && "Unknown target flag on external symbol operand");
case 0:
SymRef = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None, Ctx);
break;
case ARMII::MO_LO16:
SymRef = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_LO16, Ctx);
break;
case ARMII::MO_HI16:
SymRef = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_HI16, Ctx);
break;
case ARMII::MO_PLT:
SymRef = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_PLT, Ctx);
break;
}
return SymRef;
}
const MCSymbolRefExpr *ARMMCInstLower::
GetJumpTableSymbol(const MachineOperand &MO) const {
SmallString<256> Name;
raw_svector_ostream(Name) << Printer.MAI->getPrivateGlobalPrefix() << "JTI"
<< Printer.getFunctionNumber() << '_' << MO.getIndex();
switch (MO.getTargetFlags()) {
default: assert(0 && "Unknown target flag on jump table operand");
case 0: break;
}
// Create a symbol for the name.
return MCSymbolRefExpr::Create(Ctx.GetOrCreateSymbol(Name.str()), Ctx);
}
const MCSymbolRefExpr *ARMMCInstLower::
GetConstantPoolIndexSymbol(const MachineOperand &MO) const {
SmallString<256> Name;
raw_svector_ostream(Name) << Printer.MAI->getPrivateGlobalPrefix() << "CPI"
<< Printer.getFunctionNumber() << '_' << MO.getIndex();
switch (MO.getTargetFlags()) {
default: assert(0 && "Unknown target flag on CPI operand");
case 0: break;
}
// Create a symbol for the name.
return MCSymbolRefExpr::Create(Ctx.GetOrCreateSymbol(Name.str()), Ctx);
}
MCOperand ARMMCInstLower::
LowerSymbolRefOperand(const MachineOperand &MO,
const MCSymbolRefExpr *Sym) const {
const MCExpr *Expr = Sym;
GetSymbolRef(const MachineOperand &MO, const MCSymbol *Symbol) const {
const MCExpr *Expr;
switch (MO.getTargetFlags()) {
default: assert(0 && "Unknown target flag on symbol operand");
case 0:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None, Ctx);
break;
case ARMII::MO_LO16:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_LO16, Ctx);
break;
case ARMII::MO_HI16:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_HI16, Ctx);
break;
case ARMII::MO_PLT:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_PLT, Ctx);
break;
}
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::CreateAdd(Expr,
MCConstantExpr::Create(MO.getOffset(), Ctx),
Ctx);
return MCOperand::CreateExpr(Expr);
}
void ARMMCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
OutMI.setOpcode(MI->getOpcode());
@ -149,21 +82,21 @@ void ARMMCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
MO.getMBB()->getSymbol(), Ctx));
break;
case MachineOperand::MO_GlobalAddress:
MCOp = LowerSymbolRefOperand(MO, GetSymbolRef(MO));
MCOp = GetSymbolRef(MO, GetGlobalAddressSymbol(MO.getGlobal()));
break;
case MachineOperand::MO_ExternalSymbol:
MCOp = LowerSymbolRefOperand(MO, GetExternalSymbolSymbol(MO));
MCOp = GetSymbolRef(MO,
Printer.GetExternalSymbolSymbol(MO.getSymbolName()));
break;
case MachineOperand::MO_JumpTableIndex:
MCOp = LowerSymbolRefOperand(MO, GetJumpTableSymbol(MO));
MCOp = GetSymbolRef(MO, Printer.GetJTISymbol(MO.getIndex()));
break;
case MachineOperand::MO_ConstantPoolIndex:
MCOp = LowerSymbolRefOperand(MO, GetConstantPoolIndexSymbol(MO));
MCOp = GetSymbolRef(MO, Printer.GetCPISymbol(MO.getIndex()));
break;
case MachineOperand::MO_BlockAddress:
MCOp = LowerSymbolRefOperand(MO,
MCSymbolRefExpr::Create(Printer.GetBlockAddressSymbol(
MO.getBlockAddress()), Ctx));
MCOp = GetSymbolRef(MO,
Printer.GetBlockAddressSymbol(MO.getBlockAddress()));
break;
case MachineOperand::MO_FPImmediate:
APFloat Val = MO.getFPImm()->getValueAPF();

9
lib/Target/ARM/ARMMCInstLower.h
View File

@ -40,14 +40,7 @@ public:
private:
MCSymbol *GetGlobalAddressSymbol(const GlobalValue *GV) const;
const MCSymbolRefExpr *GetSymbolRef(const MachineOperand &MO) const;
const MCSymbolRefExpr *GetExternalSymbolSymbol(const MachineOperand &MO)
const;
const MCSymbolRefExpr *GetJumpTableSymbol(const MachineOperand &MO) const;
const MCSymbolRefExpr *
GetConstantPoolIndexSymbol(const MachineOperand &MO) const;
MCOperand LowerSymbolRefOperand(const MachineOperand &MO,
const MCSymbolRefExpr *Expr) const;
MCOperand GetSymbolRef(const MachineOperand &MO, const MCSymbol *Sym) const;
};
} // end namespace llvm