mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-28 06:29:45 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165677 91177308-0d34-0410-b5e6-96231b3b80d8
337 lines
12 KiB
C++
337 lines
12 KiB
C++
//===-- CodeGen/MachineInstBuilder.h - Simplify creation of MIs -*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file exposes a function named BuildMI, which is useful for dramatically
|
|
// simplifying how MachineInstr's are created. It allows use of code like this:
|
|
//
|
|
// M = BuildMI(X86::ADDrr8, 2).addReg(argVal1).addReg(argVal2);
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CODEGEN_MACHINEINSTRBUILDER_H
|
|
#define LLVM_CODEGEN_MACHINEINSTRBUILDER_H
|
|
|
|
#include "llvm/CodeGen/MachineFunction.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
|
|
namespace llvm {
|
|
|
|
class MCInstrDesc;
|
|
class MDNode;
|
|
|
|
namespace RegState {
|
|
enum {
|
|
Define = 0x2,
|
|
Implicit = 0x4,
|
|
Kill = 0x8,
|
|
Dead = 0x10,
|
|
Undef = 0x20,
|
|
EarlyClobber = 0x40,
|
|
Debug = 0x80,
|
|
InternalRead = 0x100,
|
|
DefineNoRead = Define | Undef,
|
|
ImplicitDefine = Implicit | Define,
|
|
ImplicitKill = Implicit | Kill
|
|
};
|
|
}
|
|
|
|
class MachineInstrBuilder {
|
|
MachineInstr *MI;
|
|
public:
|
|
MachineInstrBuilder() : MI(0) {}
|
|
explicit MachineInstrBuilder(MachineInstr *mi) : MI(mi) {}
|
|
|
|
/// Allow automatic conversion to the machine instruction we are working on.
|
|
///
|
|
operator MachineInstr*() const { return MI; }
|
|
MachineInstr *operator->() const { return MI; }
|
|
operator MachineBasicBlock::iterator() const { return MI; }
|
|
|
|
/// addReg - Add a new virtual register operand...
|
|
///
|
|
const
|
|
MachineInstrBuilder &addReg(unsigned RegNo, unsigned flags = 0,
|
|
unsigned SubReg = 0) const {
|
|
assert((flags & 0x1) == 0 &&
|
|
"Passing in 'true' to addReg is forbidden! Use enums instead.");
|
|
MI->addOperand(MachineOperand::CreateReg(RegNo,
|
|
flags & RegState::Define,
|
|
flags & RegState::Implicit,
|
|
flags & RegState::Kill,
|
|
flags & RegState::Dead,
|
|
flags & RegState::Undef,
|
|
flags & RegState::EarlyClobber,
|
|
SubReg,
|
|
flags & RegState::Debug,
|
|
flags & RegState::InternalRead));
|
|
return *this;
|
|
}
|
|
|
|
/// addImm - Add a new immediate operand.
|
|
///
|
|
const MachineInstrBuilder &addImm(int64_t Val) const {
|
|
MI->addOperand(MachineOperand::CreateImm(Val));
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &addCImm(const ConstantInt *Val) const {
|
|
MI->addOperand(MachineOperand::CreateCImm(Val));
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &addFPImm(const ConstantFP *Val) const {
|
|
MI->addOperand(MachineOperand::CreateFPImm(Val));
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &addMBB(MachineBasicBlock *MBB,
|
|
unsigned char TargetFlags = 0) const {
|
|
MI->addOperand(MachineOperand::CreateMBB(MBB, TargetFlags));
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &addFrameIndex(int Idx) const {
|
|
MI->addOperand(MachineOperand::CreateFI(Idx));
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &addConstantPoolIndex(unsigned Idx,
|
|
int Offset = 0,
|
|
unsigned char TargetFlags = 0) const {
|
|
MI->addOperand(MachineOperand::CreateCPI(Idx, Offset, TargetFlags));
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &addTargetIndex(unsigned Idx, int64_t Offset = 0,
|
|
unsigned char TargetFlags = 0) const {
|
|
MI->addOperand(MachineOperand::CreateTargetIndex(Idx, Offset, TargetFlags));
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &addJumpTableIndex(unsigned Idx,
|
|
unsigned char TargetFlags = 0) const {
|
|
MI->addOperand(MachineOperand::CreateJTI(Idx, TargetFlags));
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &addGlobalAddress(const GlobalValue *GV,
|
|
int64_t Offset = 0,
|
|
unsigned char TargetFlags = 0) const {
|
|
MI->addOperand(MachineOperand::CreateGA(GV, Offset, TargetFlags));
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &addExternalSymbol(const char *FnName,
|
|
unsigned char TargetFlags = 0) const {
|
|
MI->addOperand(MachineOperand::CreateES(FnName, TargetFlags));
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &addRegMask(const uint32_t *Mask) const {
|
|
MI->addOperand(MachineOperand::CreateRegMask(Mask));
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &addMemOperand(MachineMemOperand *MMO) const {
|
|
MI->addMemOperand(*MI->getParent()->getParent(), MMO);
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &setMemRefs(MachineInstr::mmo_iterator b,
|
|
MachineInstr::mmo_iterator e) const {
|
|
MI->setMemRefs(b, e);
|
|
return *this;
|
|
}
|
|
|
|
|
|
const MachineInstrBuilder &addOperand(const MachineOperand &MO) const {
|
|
MI->addOperand(MO);
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &addMetadata(const MDNode *MD) const {
|
|
MI->addOperand(MachineOperand::CreateMetadata(MD));
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &addSym(MCSymbol *Sym) const {
|
|
MI->addOperand(MachineOperand::CreateMCSymbol(Sym));
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &setMIFlags(unsigned Flags) const {
|
|
MI->setFlags(Flags);
|
|
return *this;
|
|
}
|
|
|
|
const MachineInstrBuilder &setMIFlag(MachineInstr::MIFlag Flag) const {
|
|
MI->setFlag(Flag);
|
|
return *this;
|
|
}
|
|
|
|
// Add a displacement from an existing MachineOperand with an added offset.
|
|
const MachineInstrBuilder &addDisp(const MachineOperand &Disp, int64_t off,
|
|
unsigned char TargetFlags = 0) const {
|
|
switch (Disp.getType()) {
|
|
default:
|
|
llvm_unreachable("Unhandled operand type in addDisp()");
|
|
case MachineOperand::MO_Immediate:
|
|
return addImm(Disp.getImm() + off);
|
|
case MachineOperand::MO_GlobalAddress: {
|
|
// If caller specifies new TargetFlags then use it, otherwise the
|
|
// default behavior is to copy the target flags from the existing
|
|
// MachineOperand. This means if the caller wants to clear the
|
|
// target flags it needs to do so explicitly.
|
|
if (TargetFlags)
|
|
return addGlobalAddress(Disp.getGlobal(), Disp.getOffset() + off,
|
|
TargetFlags);
|
|
return addGlobalAddress(Disp.getGlobal(), Disp.getOffset() + off,
|
|
Disp.getTargetFlags());
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
/// BuildMI - Builder interface. Specify how to create the initial instruction
|
|
/// itself.
|
|
///
|
|
inline MachineInstrBuilder BuildMI(MachineFunction &MF,
|
|
DebugLoc DL,
|
|
const MCInstrDesc &MCID) {
|
|
return MachineInstrBuilder(MF.CreateMachineInstr(MCID, DL));
|
|
}
|
|
|
|
/// BuildMI - This version of the builder sets up the first operand as a
|
|
/// destination virtual register.
|
|
///
|
|
inline MachineInstrBuilder BuildMI(MachineFunction &MF,
|
|
DebugLoc DL,
|
|
const MCInstrDesc &MCID,
|
|
unsigned DestReg) {
|
|
return MachineInstrBuilder(MF.CreateMachineInstr(MCID, DL))
|
|
.addReg(DestReg, RegState::Define);
|
|
}
|
|
|
|
/// BuildMI - This version of the builder inserts the newly-built
|
|
/// instruction before the given position in the given MachineBasicBlock, and
|
|
/// sets up the first operand as a destination virtual register.
|
|
///
|
|
inline MachineInstrBuilder BuildMI(MachineBasicBlock &BB,
|
|
MachineBasicBlock::iterator I,
|
|
DebugLoc DL,
|
|
const MCInstrDesc &MCID,
|
|
unsigned DestReg) {
|
|
MachineInstr *MI = BB.getParent()->CreateMachineInstr(MCID, DL);
|
|
BB.insert(I, MI);
|
|
return MachineInstrBuilder(MI).addReg(DestReg, RegState::Define);
|
|
}
|
|
|
|
inline MachineInstrBuilder BuildMI(MachineBasicBlock &BB,
|
|
MachineBasicBlock::instr_iterator I,
|
|
DebugLoc DL,
|
|
const MCInstrDesc &MCID,
|
|
unsigned DestReg) {
|
|
MachineInstr *MI = BB.getParent()->CreateMachineInstr(MCID, DL);
|
|
BB.insert(I, MI);
|
|
return MachineInstrBuilder(MI).addReg(DestReg, RegState::Define);
|
|
}
|
|
|
|
inline MachineInstrBuilder BuildMI(MachineBasicBlock &BB,
|
|
MachineInstr *I,
|
|
DebugLoc DL,
|
|
const MCInstrDesc &MCID,
|
|
unsigned DestReg) {
|
|
if (I->isInsideBundle()) {
|
|
MachineBasicBlock::instr_iterator MII = I;
|
|
return BuildMI(BB, MII, DL, MCID, DestReg);
|
|
}
|
|
|
|
MachineBasicBlock::iterator MII = I;
|
|
return BuildMI(BB, MII, DL, MCID, DestReg);
|
|
}
|
|
|
|
/// BuildMI - This version of the builder inserts the newly-built
|
|
/// instruction before the given position in the given MachineBasicBlock, and
|
|
/// does NOT take a destination register.
|
|
///
|
|
inline MachineInstrBuilder BuildMI(MachineBasicBlock &BB,
|
|
MachineBasicBlock::iterator I,
|
|
DebugLoc DL,
|
|
const MCInstrDesc &MCID) {
|
|
MachineInstr *MI = BB.getParent()->CreateMachineInstr(MCID, DL);
|
|
BB.insert(I, MI);
|
|
return MachineInstrBuilder(MI);
|
|
}
|
|
|
|
inline MachineInstrBuilder BuildMI(MachineBasicBlock &BB,
|
|
MachineBasicBlock::instr_iterator I,
|
|
DebugLoc DL,
|
|
const MCInstrDesc &MCID) {
|
|
MachineInstr *MI = BB.getParent()->CreateMachineInstr(MCID, DL);
|
|
BB.insert(I, MI);
|
|
return MachineInstrBuilder(MI);
|
|
}
|
|
|
|
inline MachineInstrBuilder BuildMI(MachineBasicBlock &BB,
|
|
MachineInstr *I,
|
|
DebugLoc DL,
|
|
const MCInstrDesc &MCID) {
|
|
if (I->isInsideBundle()) {
|
|
MachineBasicBlock::instr_iterator MII = I;
|
|
return BuildMI(BB, MII, DL, MCID);
|
|
}
|
|
|
|
MachineBasicBlock::iterator MII = I;
|
|
return BuildMI(BB, MII, DL, MCID);
|
|
}
|
|
|
|
/// BuildMI - This version of the builder inserts the newly-built
|
|
/// instruction at the end of the given MachineBasicBlock, and does NOT take a
|
|
/// destination register.
|
|
///
|
|
inline MachineInstrBuilder BuildMI(MachineBasicBlock *BB,
|
|
DebugLoc DL,
|
|
const MCInstrDesc &MCID) {
|
|
return BuildMI(*BB, BB->end(), DL, MCID);
|
|
}
|
|
|
|
/// BuildMI - This version of the builder inserts the newly-built
|
|
/// instruction at the end of the given MachineBasicBlock, and sets up the first
|
|
/// operand as a destination virtual register.
|
|
///
|
|
inline MachineInstrBuilder BuildMI(MachineBasicBlock *BB,
|
|
DebugLoc DL,
|
|
const MCInstrDesc &MCID,
|
|
unsigned DestReg) {
|
|
return BuildMI(*BB, BB->end(), DL, MCID, DestReg);
|
|
}
|
|
|
|
inline unsigned getDefRegState(bool B) {
|
|
return B ? RegState::Define : 0;
|
|
}
|
|
inline unsigned getImplRegState(bool B) {
|
|
return B ? RegState::Implicit : 0;
|
|
}
|
|
inline unsigned getKillRegState(bool B) {
|
|
return B ? RegState::Kill : 0;
|
|
}
|
|
inline unsigned getDeadRegState(bool B) {
|
|
return B ? RegState::Dead : 0;
|
|
}
|
|
inline unsigned getUndefRegState(bool B) {
|
|
return B ? RegState::Undef : 0;
|
|
}
|
|
inline unsigned getInternalReadRegState(bool B) {
|
|
return B ? RegState::InternalRead : 0;
|
|
}
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|