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//===- NewPMDriver.cpp - Driver for llc using new PM ----------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
/// \file
///
/// This file is just a split of the code that logically belongs in llc.cpp but
/// that includes the new pass manager headers.
///
//===----------------------------------------------------------------------===//
#include "NewPMDriver.h"
#include "llvm/Analysis/CGSCCPassManager.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/CodeGen/CommandFlags.h"
#include "llvm/CodeGen/MIRParser/MIRParser.h"
#include "llvm/CodeGen/MIRPrinter.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachinePassManager.h"
#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/IR/IRPrintingPasses.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/Verifier.h"
#include "llvm/IRReader/IRReader.h"
#include "llvm/Passes/CodeGenPassBuilder.h" // TODO: Include pass headers properly.
#include "llvm/Passes/PassBuilder.h"
#include "llvm/Passes/StandardInstrumentations.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/WithColor.h"
#include "llvm/Target/CGPassBuilderOption.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Transforms/Scalar/LoopPassManager.h"
#include "llvm/Transforms/Utils/Cloning.h"
namespace llvm {
extern cl::opt<bool> PrintPipelinePasses;
} // namespace llvm
using namespace llvm;
static cl::opt<std::string>
RegAlloc("regalloc-npm",
cl::desc("Register allocator to use for new pass manager"),
cl::Hidden, cl::init("default"));
static cl::opt<bool>
DebugPM("debug-pass-manager", cl::Hidden,
cl::desc("Print pass management debugging information"));
bool LLCDiagnosticHandler::handleDiagnostics(const DiagnosticInfo &DI) {
DiagnosticHandler::handleDiagnostics(DI);
if (DI.getKind() == llvm::DK_SrcMgr) {
const auto &DISM = cast<DiagnosticInfoSrcMgr>(DI);
const SMDiagnostic &SMD = DISM.getSMDiag();
SMD.print(nullptr, errs());
// For testing purposes, we print the LocCookie here.
if (DISM.isInlineAsmDiag() && DISM.getLocCookie())
WithColor::note() << "!srcloc = " << DISM.getLocCookie() << "\n";
return true;
}
if (auto *Remark = dyn_cast<DiagnosticInfoOptimizationBase>(&DI))
if (!Remark->isEnabled())
return true;
DiagnosticPrinterRawOStream DP(errs());
errs() << LLVMContext::getDiagnosticMessagePrefix(DI.getSeverity()) << ": ";
DI.print(DP);
errs() << "\n";
return true;
}
static llvm::ExitOnError ExitOnErr;
int llvm::compileModuleWithNewPM(
StringRef Arg0, std::unique_ptr<Module> M, std::unique_ptr<MIRParser> MIR,
std::unique_ptr<TargetMachine> Target, std::unique_ptr<ToolOutputFile> Out,
std::unique_ptr<ToolOutputFile> DwoOut, LLVMContext &Context,
const TargetLibraryInfoImpl &TLII, bool NoVerify, StringRef PassPipeline,
CodeGenFileType FileType) {
if (!PassPipeline.empty() && TargetPassConfig::hasLimitedCodeGenPipeline()) {
WithColor::warning(errs(), Arg0)
<< "--passes cannot be used with "
<< TargetPassConfig::getLimitedCodeGenPipelineReason() << ".\n";
return 1;
}
LLVMTargetMachine &LLVMTM = static_cast<LLVMTargetMachine &>(*Target);
raw_pwrite_stream *OS = &Out->os();
// Fetch options from TargetPassConfig
CGPassBuilderOption Opt = getCGPassBuilderOption();
Opt.DisableVerify = NoVerify;
Opt.DebugPM = DebugPM;
Opt.RegAlloc = RegAlloc;
MachineModuleInfo MMI(&LLVMTM);
PassInstrumentationCallbacks PIC;
StandardInstrumentations SI(Context, Opt.DebugPM, !NoVerify);
registerCodeGenCallback(PIC, LLVMTM);
MachineFunctionAnalysisManager MFAM;
LoopAnalysisManager LAM;
FunctionAnalysisManager FAM;
CGSCCAnalysisManager CGAM;
ModuleAnalysisManager MAM;
PassBuilder PB(Target.get(), PipelineTuningOptions(), std::nullopt, &PIC);
PB.registerModuleAnalyses(MAM);
PB.registerCGSCCAnalyses(CGAM);
PB.registerFunctionAnalyses(FAM);
PB.registerLoopAnalyses(LAM);
PB.registerMachineFunctionAnalyses(MFAM);
PB.crossRegisterProxies(LAM, FAM, CGAM, MAM, &MFAM);
SI.registerCallbacks(PIC, &MAM);
FAM.registerPass([&] { return TargetLibraryAnalysis(TLII); });
MAM.registerPass([&] { return MachineModuleAnalysis(MMI); });
ModulePassManager MPM;
FunctionPassManager FPM;
if (!PassPipeline.empty()) {
// Construct a custom pass pipeline that starts after instruction
// selection.
if (!MIR) {
WithColor::warning(errs(), Arg0) << "-passes is for .mir file only.\n";
return 1;
}
// FIXME: verify that there are no IR passes.
ExitOnErr(PB.parsePassPipeline(MPM, PassPipeline));
MPM.addPass(PrintMIRPreparePass(*OS));
MachineFunctionPassManager MFPM;
MFPM.addPass(PrintMIRPass(*OS));
FPM.addPass(createFunctionToMachineFunctionPassAdaptor(std::move(MFPM)));
MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
if (MIR->parseMachineFunctions(*M, MAM))
return 1;
} else {
ExitOnErr(LLVMTM.buildCodeGenPipeline(
MPM, *OS, DwoOut ? &DwoOut->os() : nullptr, FileType, Opt, &PIC));
}
if (PrintPipelinePasses) {
std::string PipelineStr;
raw_string_ostream OS(PipelineStr);
MPM.printPipeline(OS, [&PIC](StringRef ClassName) {
auto PassName = PIC.getPassNameForClassName(ClassName);
return PassName.empty() ? ClassName : PassName;
});
outs() << PipelineStr << '\n';
return 0;
}
// Before executing passes, print the final values of the LLVM options.
cl::PrintOptionValues();
MPM.run(*M, MAM);
if (Context.getDiagHandlerPtr()->HasErrors)
exit(1);
// Declare success.
Out->keep();
if (DwoOut)
DwoOut->keep();
return 0;
}
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