// MCInst records.
//
//===----------------------------------------------------------------------===//
-
#include "MipsMCInstLower.h"
+#include "MCTargetDesc/MipsBaseInfo.h"
#include "MipsAsmPrinter.h"
#include "MipsInstrInfo.h"
-#include "MCTargetDesc/MipsBaseInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineOperand.h"
+#include "llvm/IR/Mangler.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
-#include "llvm/Target/Mangler.h"
+#include "llvm/MC/MCStreamer.h"
using namespace llvm;
MipsMCInstLower::MipsMCInstLower(MipsAsmPrinter &asmprinter)
: AsmPrinter(asmprinter) {}
-void MipsMCInstLower::Initialize(Mangler *M, MCContext* C) {
- Mang = M;
+void MipsMCInstLower::Initialize(MCContext *C) {
Ctx = C;
}
case MipsII::MO_GOT_DISP: Kind = MCSymbolRefExpr::VK_Mips_GOT_DISP; break;
case MipsII::MO_GOT_PAGE: Kind = MCSymbolRefExpr::VK_Mips_GOT_PAGE; break;
case MipsII::MO_GOT_OFST: Kind = MCSymbolRefExpr::VK_Mips_GOT_OFST; break;
+ case MipsII::MO_HIGHER: Kind = MCSymbolRefExpr::VK_Mips_HIGHER; break;
+ case MipsII::MO_HIGHEST: Kind = MCSymbolRefExpr::VK_Mips_HIGHEST; break;
+ case MipsII::MO_GOT_HI16: Kind = MCSymbolRefExpr::VK_Mips_GOT_HI16; break;
+ case MipsII::MO_GOT_LO16: Kind = MCSymbolRefExpr::VK_Mips_GOT_LO16; break;
+ case MipsII::MO_CALL_HI16: Kind = MCSymbolRefExpr::VK_Mips_CALL_HI16; break;
+ case MipsII::MO_CALL_LO16: Kind = MCSymbolRefExpr::VK_Mips_CALL_LO16; break;
}
switch (MOTy) {
break;
case MachineOperand::MO_GlobalAddress:
- Symbol = Mang->getSymbol(MO.getGlobal());
+ Symbol = AsmPrinter.getSymbol(MO.getGlobal());
Offset += MO.getOffset();
break;
Offset += MO.getOffset();
break;
+ case MachineOperand::MO_MCSymbol:
+ Symbol = MO.getMCSymbol();
+ Offset += MO.getOffset();
+ break;
+
case MachineOperand::MO_JumpTableIndex:
Symbol = AsmPrinter.GetJTISymbol(MO.getIndex());
break;
llvm_unreachable("<unknown operand type>");
}
- const MCSymbolRefExpr *MCSym = MCSymbolRefExpr::Create(Symbol, Kind, *Ctx);
+ const MCSymbolRefExpr *MCSym = MCSymbolRefExpr::create(Symbol, Kind, *Ctx);
if (!Offset)
- return MCOperand::CreateExpr(MCSym);
+ return MCOperand::createExpr(MCSym);
// Assume offset is never negative.
assert(Offset > 0);
- const MCConstantExpr *OffsetExpr = MCConstantExpr::Create(Offset, *Ctx);
- const MCBinaryExpr *AddExpr = MCBinaryExpr::CreateAdd(MCSym, OffsetExpr, *Ctx);
- return MCOperand::CreateExpr(AddExpr);
+ const MCConstantExpr *OffsetExpr = MCConstantExpr::create(Offset, *Ctx);
+ const MCBinaryExpr *Add = MCBinaryExpr::createAdd(MCSym, OffsetExpr, *Ctx);
+ return MCOperand::createExpr(Add);
}
-static void CreateMCInst(MCInst& Inst, unsigned Opc, const MCOperand& Opnd0,
- const MCOperand& Opnd1,
- const MCOperand& Opnd2 = MCOperand()) {
+/*
+static void CreateMCInst(MCInst& Inst, unsigned Opc, const MCOperand &Opnd0,
+ const MCOperand &Opnd1,
+ const MCOperand &Opnd2 = MCOperand()) {
Inst.setOpcode(Opc);
Inst.addOperand(Opnd0);
Inst.addOperand(Opnd1);
if (Opnd2.isValid())
Inst.addOperand(Opnd2);
}
+*/
-MCOperand MipsMCInstLower::LowerOperand(const MachineOperand& MO,
+MCOperand MipsMCInstLower::LowerOperand(const MachineOperand &MO,
unsigned offset) const {
MachineOperandType MOTy = MO.getType();
case MachineOperand::MO_Register:
// Ignore all implicit register operands.
if (MO.isImplicit()) break;
- return MCOperand::CreateReg(MO.getReg());
+ return MCOperand::createReg(MO.getReg());
case MachineOperand::MO_Immediate:
- return MCOperand::CreateImm(MO.getImm() + offset);
+ return MCOperand::createImm(MO.getImm() + offset);
case MachineOperand::MO_MachineBasicBlock:
case MachineOperand::MO_GlobalAddress:
case MachineOperand::MO_ExternalSymbol:
+ case MachineOperand::MO_MCSymbol:
case MachineOperand::MO_JumpTableIndex:
case MachineOperand::MO_ConstantPoolIndex:
case MachineOperand::MO_BlockAddress:
return MCOperand();
}
+MCOperand MipsMCInstLower::createSub(MachineBasicBlock *BB1,
+ MachineBasicBlock *BB2,
+ MCSymbolRefExpr::VariantKind Kind) const {
+ const MCSymbolRefExpr *Sym1 = MCSymbolRefExpr::create(BB1->getSymbol(), *Ctx);
+ const MCSymbolRefExpr *Sym2 = MCSymbolRefExpr::create(BB2->getSymbol(), *Ctx);
+ const MCBinaryExpr *Sub = MCBinaryExpr::createSub(Sym1, Sym2, *Ctx);
+
+ return MCOperand::createExpr(MipsMCExpr::create(Kind, Sub, *Ctx));
+}
+
+void MipsMCInstLower::
+lowerLongBranchLUi(const MachineInstr *MI, MCInst &OutMI) const {
+ OutMI.setOpcode(Mips::LUi);
+
+ // Lower register operand.
+ OutMI.addOperand(LowerOperand(MI->getOperand(0)));
+
+ // Create %hi($tgt-$baltgt).
+ OutMI.addOperand(createSub(MI->getOperand(1).getMBB(),
+ MI->getOperand(2).getMBB(),
+ MCSymbolRefExpr::VK_Mips_ABS_HI));
+}
+
+void MipsMCInstLower::
+lowerLongBranchADDiu(const MachineInstr *MI, MCInst &OutMI, int Opcode,
+ MCSymbolRefExpr::VariantKind Kind) const {
+ OutMI.setOpcode(Opcode);
+
+ // Lower two register operands.
+ for (unsigned I = 0, E = 2; I != E; ++I) {
+ const MachineOperand &MO = MI->getOperand(I);
+ OutMI.addOperand(LowerOperand(MO));
+ }
+
+ // Create %lo($tgt-$baltgt) or %hi($tgt-$baltgt).
+ OutMI.addOperand(createSub(MI->getOperand(2).getMBB(),
+ MI->getOperand(3).getMBB(), Kind));
+}
+
+bool MipsMCInstLower::lowerLongBranch(const MachineInstr *MI,
+ MCInst &OutMI) const {
+ switch (MI->getOpcode()) {
+ default:
+ return false;
+ case Mips::LONG_BRANCH_LUi:
+ lowerLongBranchLUi(MI, OutMI);
+ return true;
+ case Mips::LONG_BRANCH_ADDiu:
+ lowerLongBranchADDiu(MI, OutMI, Mips::ADDiu,
+ MCSymbolRefExpr::VK_Mips_ABS_LO);
+ return true;
+ case Mips::LONG_BRANCH_DADDiu:
+ unsigned TargetFlags = MI->getOperand(2).getTargetFlags();
+ if (TargetFlags == MipsII::MO_ABS_HI)
+ lowerLongBranchADDiu(MI, OutMI, Mips::DADDiu,
+ MCSymbolRefExpr::VK_Mips_ABS_HI);
+ else if (TargetFlags == MipsII::MO_ABS_LO)
+ lowerLongBranchADDiu(MI, OutMI, Mips::DADDiu,
+ MCSymbolRefExpr::VK_Mips_ABS_LO);
+ else
+ report_fatal_error("Unexpected flags for LONG_BRANCH_DADDiu");
+ return true;
+ }
+}
+
void MipsMCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
+ if (lowerLongBranch(MI, OutMI))
+ return;
+
OutMI.setOpcode(MI->getOpcode());
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
}
}
-// Create the following two instructions:
-// "lui $2, %hi(_gp_disp)"
-// "addiu $2, $2, %lo(_gp_disp)"
-void MipsMCInstLower::LowerSETGP01(SmallVector<MCInst, 4>& MCInsts) {
- MCOperand RegOpnd = MCOperand::CreateReg(Mips::V0);
- StringRef SymName("_gp_disp");
- const MCSymbol *Sym = Ctx->GetOrCreateSymbol(SymName);
- const MCSymbolRefExpr *MCSym;
-
- MCSym = MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_Mips_ABS_HI, *Ctx);
- MCOperand SymHi = MCOperand::CreateExpr(MCSym);
- MCSym = MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_Mips_ABS_LO, *Ctx);
- MCOperand SymLo = MCOperand::CreateExpr(MCSym);
-
- MCInsts.resize(2);
-
- CreateMCInst(MCInsts[0], Mips::LUi, RegOpnd, SymHi);
- CreateMCInst(MCInsts[1], Mips::ADDiu, RegOpnd, RegOpnd, SymLo);
-}