//===----------------------------------------------------------------------===//
#include "ARM.h"
-#include "ARMMCInstLower.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/Constants.h"
+#include "ARMAsmPrinter.h"
+#include "MCTargetDesc/ARMMCExpr.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
-#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCContext.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/Mangler.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
-#include "llvm/Target/Mangler.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/ADT/SmallString.h"
using namespace llvm;
-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?");
- // FIXME: HANDLE PLT references how??
- 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);
+MCOperand ARMAsmPrinter::GetSymbolRef(const MachineOperand &MO,
+ const MCSymbol *Symbol) {
+ const MCExpr *Expr;
+ unsigned Option = MO.getTargetFlags() & ARMII::MO_OPTION_MASK;
+ switch (Option) {
+ default: {
+ Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None,
+ OutContext);
+ switch (Option) {
+ default: llvm_unreachable("Unknown target flag on symbol operand");
+ case 0:
+ break;
+ case ARMII::MO_LO16:
+ Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None,
+ OutContext);
+ Expr = ARMMCExpr::CreateLower16(Expr, OutContext);
+ break;
+ case ARMII::MO_HI16:
+ Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None,
+ OutContext);
+ Expr = ARMMCExpr::CreateUpper16(Expr, OutContext);
+ break;
+ }
break;
}
- return SymRef;
-}
-
-MCSymbol *ARMMCInstLower::
-GetExternalSymbolSymbol(const MachineOperand &MO) const {
- // FIXME: HANDLE PLT references how??
- // FIXME: This probably needs to be merged with the above SymbolRef stuff
- // to handle :lower16: and :upper16: (?)
- switch (MO.getTargetFlags()) {
- default: assert(0 && "Unknown target flag on GV operand");
- case 0: break;
- }
-
- return Printer.GetExternalSymbolSymbol(MO.getSymbolName());
-}
-
-
-
-MCSymbol *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 Ctx.GetOrCreateSymbol(Name.str());
-}
-
-MCSymbol *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 Ctx.GetOrCreateSymbol(Name.str());
-}
-
-MCOperand ARMMCInstLower::
-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, Ctx);
-
- switch (MO.getTargetFlags()) {
- default: assert(0 && "Unknown target flag on Symbol operand");
- case 0: break;
+ case ARMII::MO_PLT:
+ Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_PLT,
+ OutContext);
+ break;
}
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::CreateAdd(Expr,
- MCConstantExpr::Create(MO.getOffset(), Ctx),
- Ctx);
+ MCConstantExpr::Create(MO.getOffset(),
+ OutContext),
+ OutContext);
return MCOperand::CreateExpr(Expr);
-}
-MCOperand ARMMCInstLower::
-LowerSymbolRefOperand(const MachineOperand &MO,
- const MCSymbolRefExpr *Sym) const {
- const MCExpr *Expr = Sym;
- if (!MO.isJTI() && MO.getOffset())
- Expr = MCBinaryExpr::CreateAdd(Expr,
- MCConstantExpr::Create(MO.getOffset(), Ctx),
- Ctx);
- return MCOperand::CreateExpr(Expr);
}
+bool ARMAsmPrinter::lowerOperand(const MachineOperand &MO,
+ MCOperand &MCOp) {
+ switch (MO.getType()) {
+ default: llvm_unreachable("unknown operand type");
+ case MachineOperand::MO_Register:
+ // Ignore all non-CPSR implicit register operands.
+ if (MO.isImplicit() && MO.getReg() != ARM::CPSR)
+ return false;
+ assert(!MO.getSubReg() && "Subregs should be eliminated!");
+ MCOp = MCOperand::CreateReg(MO.getReg());
+ break;
+ case MachineOperand::MO_Immediate:
+ MCOp = MCOperand::CreateImm(MO.getImm());
+ break;
+ case MachineOperand::MO_MachineBasicBlock:
+ MCOp = MCOperand::CreateExpr(MCSymbolRefExpr::Create(
+ MO.getMBB()->getSymbol(), OutContext));
+ break;
+ case MachineOperand::MO_GlobalAddress: {
+ MCOp = GetSymbolRef(MO,
+ GetARMGVSymbol(MO.getGlobal(), MO.getTargetFlags()));
+ break;
+ }
+ case MachineOperand::MO_ExternalSymbol:
+ MCOp = GetSymbolRef(MO,
+ GetExternalSymbolSymbol(MO.getSymbolName()));
+ break;
+ case MachineOperand::MO_JumpTableIndex:
+ MCOp = GetSymbolRef(MO, GetJTISymbol(MO.getIndex()));
+ break;
+ case MachineOperand::MO_ConstantPoolIndex:
+ MCOp = GetSymbolRef(MO, GetCPISymbol(MO.getIndex()));
+ break;
+ case MachineOperand::MO_BlockAddress:
+ MCOp = GetSymbolRef(MO, GetBlockAddressSymbol(MO.getBlockAddress()));
+ break;
+ case MachineOperand::MO_FPImmediate: {
+ APFloat Val = MO.getFPImm()->getValueAPF();
+ bool ignored;
+ Val.convert(APFloat::IEEEdouble, APFloat::rmTowardZero, &ignored);
+ MCOp = MCOperand::CreateFPImm(Val.convertToDouble());
+ break;
+ }
+ case MachineOperand::MO_RegisterMask:
+ // Ignore call clobbers.
+ return false;
+ }
+ return true;
+}
-void ARMMCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
+void llvm::LowerARMMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
+ ARMAsmPrinter &AP) {
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();
- assert(0 && "unknown operand type");
- case MachineOperand::MO_Register:
- // Ignore all non-CPSR implicit register operands.
- if (MO.isImplicit() && MO.getReg() != ARM::CPSR) continue;
- assert(!MO.getSubReg() && "Subregs should be eliminated!");
- MCOp = MCOperand::CreateReg(MO.getReg());
- break;
- case MachineOperand::MO_Immediate:
- MCOp = MCOperand::CreateImm(MO.getImm());
- break;
- case MachineOperand::MO_MachineBasicBlock:
- MCOp = MCOperand::CreateExpr(MCSymbolRefExpr::Create(
- MO.getMBB()->getSymbol(), Ctx));
- break;
- case MachineOperand::MO_GlobalAddress:
- MCOp = LowerSymbolRefOperand(MO, GetSymbolRef(MO));
- break;
- case MachineOperand::MO_ExternalSymbol:
- MCOp = LowerSymbolOperand(MO, GetExternalSymbolSymbol(MO));
- break;
- case MachineOperand::MO_JumpTableIndex:
- MCOp = LowerSymbolOperand(MO, GetJumpTableSymbol(MO));
- break;
- case MachineOperand::MO_ConstantPoolIndex:
- MCOp = LowerSymbolOperand(MO, GetConstantPoolIndexSymbol(MO));
- break;
- case MachineOperand::MO_BlockAddress:
- MCOp = LowerSymbolOperand(MO, Printer.GetBlockAddressSymbol(
- MO.getBlockAddress()));
- break;
- case MachineOperand::MO_FPImmediate:
- APFloat Val = MO.getFPImm()->getValueAPF();
- bool ignored;
- Val.convert(APFloat::IEEEdouble, APFloat::rmTowardZero, &ignored);
- MCOp = MCOperand::CreateFPImm(Val.convertToDouble());
- break;
- }
-
- OutMI.addOperand(MCOp);
+ if (AP.lowerOperand(MO, MCOp))
+ OutMI.addOperand(MCOp);
}
-
}
projects / oota-llvm.git / blobdiff