1 //===-- SparcMCInstLower.cpp - Convert Sparc MachineInstr to MCInst -------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains code to lower Sparc MachineInstrs to their corresponding
13 //===----------------------------------------------------------------------===//
16 #include "MCTargetDesc/SparcMCExpr.h"
17 #include "llvm/ADT/SmallString.h"
18 #include "llvm/CodeGen/AsmPrinter.h"
19 #include "llvm/CodeGen/MachineFunction.h"
20 #include "llvm/CodeGen/MachineInstr.h"
21 #include "llvm/CodeGen/MachineOperand.h"
22 #include "llvm/IR/Mangler.h"
23 #include "llvm/MC/MCAsmInfo.h"
24 #include "llvm/MC/MCContext.h"
25 #include "llvm/MC/MCExpr.h"
26 #include "llvm/MC/MCInst.h"
31 static MCOperand LowerSymbolOperand(const MachineInstr *MI,
32 const MachineOperand &MO,
35 SparcMCExpr::VariantKind Kind =
36 (SparcMCExpr::VariantKind)MO.getTargetFlags();
37 const MCSymbol *Symbol = nullptr;
39 switch(MO.getType()) {
40 default: llvm_unreachable("Unknown type in LowerSymbolOperand");
41 case MachineOperand::MO_MachineBasicBlock:
42 Symbol = MO.getMBB()->getSymbol();
45 case MachineOperand::MO_GlobalAddress:
46 Symbol = AP.getSymbol(MO.getGlobal());
49 case MachineOperand::MO_BlockAddress:
50 Symbol = AP.GetBlockAddressSymbol(MO.getBlockAddress());
53 case MachineOperand::MO_ExternalSymbol:
54 Symbol = AP.GetExternalSymbolSymbol(MO.getSymbolName());
57 case MachineOperand::MO_ConstantPoolIndex:
58 Symbol = AP.GetCPISymbol(MO.getIndex());
62 const MCSymbolRefExpr *MCSym = MCSymbolRefExpr::Create(Symbol,
64 const SparcMCExpr *expr = SparcMCExpr::Create(Kind, MCSym,
66 return MCOperand::CreateExpr(expr);
69 static MCOperand LowerOperand(const MachineInstr *MI,
70 const MachineOperand &MO,
72 switch(MO.getType()) {
73 default: llvm_unreachable("unknown operand type"); break;
74 case MachineOperand::MO_Register:
77 return MCOperand::CreateReg(MO.getReg());
79 case MachineOperand::MO_Immediate:
80 return MCOperand::CreateImm(MO.getImm());
82 case MachineOperand::MO_MachineBasicBlock:
83 case MachineOperand::MO_GlobalAddress:
84 case MachineOperand::MO_BlockAddress:
85 case MachineOperand::MO_ExternalSymbol:
86 case MachineOperand::MO_ConstantPoolIndex:
87 return LowerSymbolOperand(MI, MO, AP);
89 case MachineOperand::MO_RegisterMask: break;
95 void llvm::LowerSparcMachineInstrToMCInst(const MachineInstr *MI,
100 OutMI.setOpcode(MI->getOpcode());
102 for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
103 const MachineOperand &MO = MI->getOperand(i);
104 MCOperand MCOp = LowerOperand(MI, MO, AP);
107 OutMI.addOperand(MCOp);