LLVM 19.0.0git
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1//===-- VEMCInstLower.cpp - Convert VE MachineInstr to MCInst -------------===//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
9// This file contains code to lower VE MachineInstrs to their corresponding
10// MCInst records.
15#include "VE.h"
20#include "llvm/IR/Mangler.h"
21#include "llvm/MC/MCAsmInfo.h"
22#include "llvm/MC/MCContext.h"
23#include "llvm/MC/MCExpr.h"
24#include "llvm/MC/MCInst.h"
26using namespace llvm;
29 const MachineOperand &MO,
30 const MCSymbol *Symbol, AsmPrinter &AP) {
33 const MCExpr *Expr = MCSymbolRefExpr::create(Symbol, AP.OutContext);
34 // Add offset iff MO is not jump table info or machine basic block.
35 if (!MO.isJTI() && !MO.isMBB() && MO.getOffset())
38 AP.OutContext);
39 Expr = VEMCExpr::create(Kind, Expr, AP.OutContext);
40 return MCOperand::createExpr(Expr);
44 AsmPrinter &AP) {
45 switch (MO.getType()) {
46 default:
47 report_fatal_error("unsupported operand type");
50 if (MO.isImplicit())
51 break;
52 return MCOperand::createReg(MO.getReg());
55 return LowerSymbolOperand(
56 MI, MO, AP.GetBlockAddressSymbol(MO.getBlockAddress()), AP);
58 return LowerSymbolOperand(MI, MO, AP.GetCPISymbol(MO.getIndex()), AP);
60 return LowerSymbolOperand(
61 MI, MO, AP.GetExternalSymbolSymbol(MO.getSymbolName()), AP);
63 return LowerSymbolOperand(MI, MO, AP.getSymbol(MO.getGlobal()), AP);
65 return MCOperand::createImm(MO.getImm());
67 return LowerSymbolOperand(MI, MO, AP.GetJTISymbol(MO.getIndex()), AP);
69 return LowerSymbolOperand(MI, MO, MO.getMBB()->getSymbol(), AP);
72 break;
73 }
74 return MCOperand();
78 AsmPrinter &AP) {
79 OutMI.setOpcode(MI->getOpcode());
81 for (const MachineOperand &MO : MI->operands()) {
82 MCOperand MCOp = LowerOperand(MI, MO, AP);
84 if (MCOp.isValid())
85 OutMI.addOperand(MCOp);
86 }
IRTranslator LLVM IR MI
static MCOperand LowerSymbolOperand(const MachineInstr *MI, const MachineOperand &MO, const MCSymbol *Symbol, AsmPrinter &AP)
static MCOperand LowerOperand(const MachineInstr *MI, const MachineOperand &MO, AsmPrinter &AP)
This class is intended to be used as a driving class for all asm writers.
Definition: AsmPrinter.h:84
MCSymbol * getSymbol(const GlobalValue *GV) const
Definition: AsmPrinter.cpp:700
virtual MCSymbol * GetCPISymbol(unsigned CPID) const
Return the symbol for the specified constant pool entry.
MCSymbol * GetJTISymbol(unsigned JTID, bool isLinkerPrivate=false) const
Return the symbol for the specified jump table entry.
MCContext & OutContext
This is the context for the output file that we are streaming.
Definition: AsmPrinter.h:94
MCSymbol * GetExternalSymbolSymbol(Twine Sym) const
Return the MCSymbol for the specified ExternalSymbol.
MCSymbol * GetBlockAddressSymbol(const BlockAddress *BA) const
Return the MCSymbol used to satisfy BlockAddress uses of the specified basic block.
static const MCBinaryExpr * createAdd(const MCExpr *LHS, const MCExpr *RHS, MCContext &Ctx)
Definition: MCExpr.h:536
static const MCConstantExpr * create(int64_t Value, MCContext &Ctx, bool PrintInHex=false, unsigned SizeInBytes=0)
Definition: MCExpr.cpp:194
Base class for the full range of assembler expressions which are needed for parsing.
Definition: MCExpr.h:35
Instances of this class represent a single low-level machine instruction.
Definition: MCInst.h:184
void addOperand(const MCOperand Op)
Definition: MCInst.h:210
void setOpcode(unsigned Op)
Definition: MCInst.h:197
Instances of this class represent operands of the MCInst class.
Definition: MCInst.h:36
static MCOperand createReg(unsigned Reg)
Definition: MCInst.h:134
static MCOperand createExpr(const MCExpr *Val)
Definition: MCInst.h:162
static MCOperand createImm(int64_t Val)
Definition: MCInst.h:141
bool isValid() const
Definition: MCInst.h:60
static const MCSymbolRefExpr * create(const MCSymbol *Symbol, MCContext &Ctx)
Definition: MCExpr.h:397
MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...
Definition: MCSymbol.h:40
MCSymbol * getSymbol() const
Return the MCSymbol for this basic block.
Representation of each machine instruction.
Definition: MachineInstr.h:69
MachineOperand class - Representation of each machine instruction operand.
const GlobalValue * getGlobal() const
int64_t getImm() const
bool isImplicit() const
MachineBasicBlock * getMBB() const
bool isJTI() const
isJTI - Tests if this is a MO_JumpTableIndex operand.
const BlockAddress * getBlockAddress() const
unsigned getTargetFlags() const
MachineOperandType getType() const
getType - Returns the MachineOperandType for this operand.
const char * getSymbolName() const
Register getReg() const
getReg - Returns the register number.
@ MO_Immediate
Immediate operand.
@ MO_ConstantPoolIndex
Address of indexed Constant in Constant Pool.
@ MO_GlobalAddress
Address of a global value.
@ MO_RegisterMask
Mask of preserved registers.
@ MO_BlockAddress
Address of a basic block.
@ MO_MachineBasicBlock
MachineBasicBlock reference.
@ MO_Register
Register operand.
@ MO_ExternalSymbol
Name of external global symbol.
@ MO_JumpTableIndex
Address of indexed Jump Table for switch.
int64_t getOffset() const
Return the offset from the symbol in this operand.
bool isMBB() const
isMBB - Tests if this is a MO_MachineBasicBlock operand.
static const VEMCExpr * create(VariantKind Kind, const MCExpr *Expr, MCContext &Ctx)
Definition: VEMCExpr.cpp:27
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
void LowerVEMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI, AsmPrinter &AP)
void report_fatal_error(Error Err, bool gen_crash_diag=true)
Report a serious error, calling any installed error handler.
Definition: Error.cpp:156