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https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-13 04:30:23 +00:00
16859aa242
Force all creators of `MCSubtargetInfo` to immediately initialize it,
merging the default constructor and the initializer into an initializing
constructor. Besides cleaning up the code a little, this makes it clear
that the initializer is never called again later.
Out-of-tree backends need a trivial change: instead of calling:
auto *X = new MCSubtargetInfo();
InitXYZMCSubtargetInfo(X, ...);
return X;
they should call:
return createXYZMCSubtargetInfoImpl(...);
There's no real functionality change here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241957 91177308-0d34-0410-b5e6-96231b3b80d8
120 lines
4.2 KiB
C++
120 lines
4.2 KiB
C++
//===-- BPFMCTargetDesc.cpp - BPF Target Descriptions ---------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file provides BPF specific target descriptions.
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//
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//===----------------------------------------------------------------------===//
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#include "BPF.h"
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#include "BPFMCTargetDesc.h"
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#include "BPFMCAsmInfo.h"
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#include "InstPrinter/BPFInstPrinter.h"
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#include "llvm/MC/MCCodeGenInfo.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/MC/MCRegisterInfo.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/TargetRegistry.h"
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#define GET_INSTRINFO_MC_DESC
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#include "BPFGenInstrInfo.inc"
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#define GET_SUBTARGETINFO_MC_DESC
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#include "BPFGenSubtargetInfo.inc"
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#define GET_REGINFO_MC_DESC
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#include "BPFGenRegisterInfo.inc"
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using namespace llvm;
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static MCInstrInfo *createBPFMCInstrInfo() {
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MCInstrInfo *X = new MCInstrInfo();
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InitBPFMCInstrInfo(X);
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return X;
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}
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static MCRegisterInfo *createBPFMCRegisterInfo(const Triple &TT) {
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MCRegisterInfo *X = new MCRegisterInfo();
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InitBPFMCRegisterInfo(X, BPF::R11 /* RAReg doesn't exist */);
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return X;
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}
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static MCSubtargetInfo *createBPFMCSubtargetInfo(const Triple &TT,
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StringRef CPU, StringRef FS) {
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return createBPFMCSubtargetInfoImpl(TT, CPU, FS);
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}
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static MCCodeGenInfo *createBPFMCCodeGenInfo(const Triple &TT, Reloc::Model RM,
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CodeModel::Model CM,
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CodeGenOpt::Level OL) {
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MCCodeGenInfo *X = new MCCodeGenInfo();
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X->initMCCodeGenInfo(RM, CM, OL);
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return X;
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}
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static MCStreamer *createBPFMCStreamer(const Triple &T,
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MCContext &Ctx, MCAsmBackend &MAB,
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raw_pwrite_stream &OS, MCCodeEmitter *Emitter,
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bool RelaxAll) {
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return createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
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}
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static MCInstPrinter *createBPFMCInstPrinter(const Triple &T,
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unsigned SyntaxVariant,
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const MCAsmInfo &MAI,
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const MCInstrInfo &MII,
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const MCRegisterInfo &MRI) {
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if (SyntaxVariant == 0)
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return new BPFInstPrinter(MAI, MII, MRI);
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return 0;
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}
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extern "C" void LLVMInitializeBPFTargetMC() {
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for (Target *T : {&TheBPFleTarget, &TheBPFbeTarget, &TheBPFTarget}) {
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// Register the MC asm info.
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RegisterMCAsmInfo<BPFMCAsmInfo> X(*T);
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// Register the MC codegen info.
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TargetRegistry::RegisterMCCodeGenInfo(*T, createBPFMCCodeGenInfo);
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// Register the MC instruction info.
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TargetRegistry::RegisterMCInstrInfo(*T, createBPFMCInstrInfo);
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// Register the MC register info.
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TargetRegistry::RegisterMCRegInfo(*T, createBPFMCRegisterInfo);
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// Register the MC subtarget info.
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TargetRegistry::RegisterMCSubtargetInfo(*T,
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createBPFMCSubtargetInfo);
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// Register the object streamer
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TargetRegistry::RegisterELFStreamer(*T, createBPFMCStreamer);
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// Register the MCInstPrinter.
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TargetRegistry::RegisterMCInstPrinter(*T, createBPFMCInstPrinter);
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}
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// Register the MC code emitter
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TargetRegistry::RegisterMCCodeEmitter(TheBPFleTarget, createBPFMCCodeEmitter);
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TargetRegistry::RegisterMCCodeEmitter(TheBPFbeTarget, createBPFbeMCCodeEmitter);
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// Register the ASM Backend
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TargetRegistry::RegisterMCAsmBackend(TheBPFleTarget, createBPFAsmBackend);
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TargetRegistry::RegisterMCAsmBackend(TheBPFbeTarget, createBPFbeAsmBackend);
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if (sys::IsLittleEndianHost) {
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TargetRegistry::RegisterMCCodeEmitter(TheBPFTarget, createBPFMCCodeEmitter);
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TargetRegistry::RegisterMCAsmBackend(TheBPFTarget, createBPFAsmBackend);
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} else {
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TargetRegistry::RegisterMCCodeEmitter(TheBPFTarget, createBPFbeMCCodeEmitter);
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TargetRegistry::RegisterMCAsmBackend(TheBPFTarget, createBPFbeAsmBackend);
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}
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}
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