llvm-project/llvm/tools/opt/NewPMDriver.cpp

324 lines
12 KiB
C++

//===- NewPMDriver.cpp - Driver for opt with new PM -----------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
/// \file
///
/// This file is just a split of the code that logically belongs in opt.cpp but
/// that includes the new pass manager headers.
///
//===----------------------------------------------------------------------===//
#include "Debugify.h"
#include "NewPMDriver.h"
#include "PassPrinters.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Analysis/CGSCCPassManager.h"
#include "llvm/Bitcode/BitcodeWriterPass.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/IR/Dominators.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/Passes/PassBuilder.h"
#include "llvm/Passes/PassPlugin.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Transforms/IPO/ThinLTOBitcodeWriter.h"
#include "llvm/Transforms/Scalar/LoopPassManager.h"
using namespace llvm;
using namespace opt_tool;
static cl::opt<bool>
DebugPM("debug-pass-manager", cl::Hidden,
cl::desc("Print pass management debugging information"));
static cl::list<std::string>
PassPlugins("load-pass-plugin",
cl::desc("Load passes from plugin library"));
// This flag specifies a textual description of the alias analysis pipeline to
// use when querying for aliasing information. It only works in concert with
// the "passes" flag above.
static cl::opt<std::string>
AAPipeline("aa-pipeline",
cl::desc("A textual description of the alias analysis "
"pipeline for handling managed aliasing queries"),
cl::Hidden);
/// {{@ These options accept textual pipeline descriptions which will be
/// inserted into default pipelines at the respective extension points
static cl::opt<std::string> PeepholeEPPipeline(
"passes-ep-peephole",
cl::desc("A textual description of the function pass pipeline inserted at "
"the Peephole extension points into default pipelines"),
cl::Hidden);
static cl::opt<std::string> LateLoopOptimizationsEPPipeline(
"passes-ep-late-loop-optimizations",
cl::desc(
"A textual description of the loop pass pipeline inserted at "
"the LateLoopOptimizations extension point into default pipelines"),
cl::Hidden);
static cl::opt<std::string> LoopOptimizerEndEPPipeline(
"passes-ep-loop-optimizer-end",
cl::desc("A textual description of the loop pass pipeline inserted at "
"the LoopOptimizerEnd extension point into default pipelines"),
cl::Hidden);
static cl::opt<std::string> ScalarOptimizerLateEPPipeline(
"passes-ep-scalar-optimizer-late",
cl::desc("A textual description of the function pass pipeline inserted at "
"the ScalarOptimizerLate extension point into default pipelines"),
cl::Hidden);
static cl::opt<std::string> CGSCCOptimizerLateEPPipeline(
"passes-ep-cgscc-optimizer-late",
cl::desc("A textual description of the cgscc pass pipeline inserted at "
"the CGSCCOptimizerLate extension point into default pipelines"),
cl::Hidden);
static cl::opt<std::string> VectorizerStartEPPipeline(
"passes-ep-vectorizer-start",
cl::desc("A textual description of the function pass pipeline inserted at "
"the VectorizerStart extension point into default pipelines"),
cl::Hidden);
static cl::opt<std::string> PipelineStartEPPipeline(
"passes-ep-pipeline-start",
cl::desc("A textual description of the function pass pipeline inserted at "
"the PipelineStart extension point into default pipelines"),
cl::Hidden);
enum PGOKind { NoPGO, InstrGen, InstrUse, SampleUse };
static cl::opt<PGOKind> PGOKindFlag(
"pgo-kind", cl::init(NoPGO), cl::Hidden,
cl::desc("The kind of profile guided optimization"),
cl::values(clEnumValN(NoPGO, "nopgo", "Do not use PGO."),
clEnumValN(InstrGen, "new-pm-pgo-instr-gen-pipeline",
"Instrument the IR to generate profile."),
clEnumValN(InstrUse, "new-pm-pgo-instr-use-pipeline",
"Use instrumented profile to guide PGO."),
clEnumValN(SampleUse, "new-pm-pgo-sample-use-pipeline",
"Use sampled profile to guide PGO.")));
static cl::opt<std::string> ProfileFile(
"profile-file", cl::desc("Path to the profile."), cl::Hidden);
static cl::opt<bool> DebugInfoForProfiling(
"new-pm-debug-info-for-profiling", cl::init(false), cl::Hidden,
cl::desc("Emit special debug info to enable PGO profile generation."));
/// @}}
template <typename PassManagerT>
bool tryParsePipelineText(PassBuilder &PB, StringRef PipelineText) {
if (PipelineText.empty())
return false;
// Verify the pipeline is parseable:
PassManagerT PM;
if (PB.parsePassPipeline(PM, PipelineText))
return true;
errs() << "Could not parse pipeline '" << PipelineText
<< "'. I'm going to igore it.\n";
return false;
}
/// If one of the EPPipeline command line options was given, register callbacks
/// for parsing and inserting the given pipeline
static void registerEPCallbacks(PassBuilder &PB, bool VerifyEachPass,
bool DebugLogging) {
if (tryParsePipelineText<FunctionPassManager>(PB, PeepholeEPPipeline))
PB.registerPeepholeEPCallback([&PB, VerifyEachPass, DebugLogging](
FunctionPassManager &PM, PassBuilder::OptimizationLevel Level) {
PB.parsePassPipeline(PM, PeepholeEPPipeline, VerifyEachPass,
DebugLogging);
});
if (tryParsePipelineText<LoopPassManager>(PB,
LateLoopOptimizationsEPPipeline))
PB.registerLateLoopOptimizationsEPCallback(
[&PB, VerifyEachPass, DebugLogging](
LoopPassManager &PM, PassBuilder::OptimizationLevel Level) {
PB.parsePassPipeline(PM, LateLoopOptimizationsEPPipeline,
VerifyEachPass, DebugLogging);
});
if (tryParsePipelineText<LoopPassManager>(PB, LoopOptimizerEndEPPipeline))
PB.registerLoopOptimizerEndEPCallback([&PB, VerifyEachPass, DebugLogging](
LoopPassManager &PM, PassBuilder::OptimizationLevel Level) {
PB.parsePassPipeline(PM, LoopOptimizerEndEPPipeline, VerifyEachPass,
DebugLogging);
});
if (tryParsePipelineText<FunctionPassManager>(PB,
ScalarOptimizerLateEPPipeline))
PB.registerScalarOptimizerLateEPCallback(
[&PB, VerifyEachPass, DebugLogging](
FunctionPassManager &PM, PassBuilder::OptimizationLevel Level) {
PB.parsePassPipeline(PM, ScalarOptimizerLateEPPipeline,
VerifyEachPass, DebugLogging);
});
if (tryParsePipelineText<CGSCCPassManager>(PB, CGSCCOptimizerLateEPPipeline))
PB.registerCGSCCOptimizerLateEPCallback([&PB, VerifyEachPass, DebugLogging](
CGSCCPassManager &PM, PassBuilder::OptimizationLevel Level) {
PB.parsePassPipeline(PM, CGSCCOptimizerLateEPPipeline, VerifyEachPass,
DebugLogging);
});
if (tryParsePipelineText<FunctionPassManager>(PB, VectorizerStartEPPipeline))
PB.registerVectorizerStartEPCallback([&PB, VerifyEachPass, DebugLogging](
FunctionPassManager &PM, PassBuilder::OptimizationLevel Level) {
PB.parsePassPipeline(PM, VectorizerStartEPPipeline, VerifyEachPass,
DebugLogging);
});
if (tryParsePipelineText<ModulePassManager>(PB, PipelineStartEPPipeline))
PB.registerPipelineStartEPCallback(
[&PB, VerifyEachPass, DebugLogging](ModulePassManager &PM) {
PB.parsePassPipeline(PM, PipelineStartEPPipeline, VerifyEachPass,
DebugLogging);
});
}
#ifdef LINK_POLLY_INTO_TOOLS
namespace polly {
void RegisterPollyPasses(PassBuilder &);
}
#endif
bool llvm::runPassPipeline(StringRef Arg0, Module &M, TargetMachine *TM,
ToolOutputFile *Out, ToolOutputFile *ThinLTOLinkOut,
ToolOutputFile *OptRemarkFile,
StringRef PassPipeline, OutputKind OK,
VerifierKind VK,
bool ShouldPreserveAssemblyUseListOrder,
bool ShouldPreserveBitcodeUseListOrder,
bool EmitSummaryIndex, bool EmitModuleHash,
bool EnableDebugify) {
bool VerifyEachPass = VK == VK_VerifyEachPass;
Optional<PGOOptions> P;
switch (PGOKindFlag) {
case InstrGen:
P = PGOOptions(ProfileFile, "", "", true);
break;
case InstrUse:
P = PGOOptions("", ProfileFile, "", false);
break;
case SampleUse:
P = PGOOptions("", "", ProfileFile, false);
break;
case NoPGO:
if (DebugInfoForProfiling)
P = PGOOptions("", "", "", false, true);
else
P = None;
}
PassBuilder PB(TM, P);
registerEPCallbacks(PB, VerifyEachPass, DebugPM);
// Load requested pass plugins and let them register pass builder callbacks
for (auto &PluginFN : PassPlugins) {
auto PassPlugin = PassPlugin::Load(PluginFN);
if (!PassPlugin) {
errs() << "Failed to load passes from '" << PluginFN
<< "'. Request ignored.\n";
continue;
}
PassPlugin->registerPassBuilderCallbacks(PB);
}
// Register a callback that creates the debugify passes as needed.
PB.registerPipelineParsingCallback(
[](StringRef Name, ModulePassManager &MPM,
ArrayRef<PassBuilder::PipelineElement>) {
if (Name == "debugify") {
MPM.addPass(NewPMDebugifyPass());
return true;
} else if (Name == "check-debugify") {
MPM.addPass(NewPMCheckDebugifyPass());
return true;
}
return false;
});
#ifdef LINK_POLLY_INTO_TOOLS
polly::RegisterPollyPasses(PB);
#endif
// Specially handle the alias analysis manager so that we can register
// a custom pipeline of AA passes with it.
AAManager AA;
if (!PB.parseAAPipeline(AA, AAPipeline)) {
errs() << Arg0 << ": unable to parse AA pipeline description.\n";
return false;
}
LoopAnalysisManager LAM(DebugPM);
FunctionAnalysisManager FAM(DebugPM);
CGSCCAnalysisManager CGAM(DebugPM);
ModuleAnalysisManager MAM(DebugPM);
// Register the AA manager first so that our version is the one used.
FAM.registerPass([&] { return std::move(AA); });
// Register all the basic analyses with the managers.
PB.registerModuleAnalyses(MAM);
PB.registerCGSCCAnalyses(CGAM);
PB.registerFunctionAnalyses(FAM);
PB.registerLoopAnalyses(LAM);
PB.crossRegisterProxies(LAM, FAM, CGAM, MAM);
ModulePassManager MPM(DebugPM);
if (VK > VK_NoVerifier)
MPM.addPass(VerifierPass());
if (EnableDebugify)
MPM.addPass(NewPMDebugifyPass());
if (!PB.parsePassPipeline(MPM, PassPipeline, VerifyEachPass, DebugPM)) {
errs() << Arg0 << ": unable to parse pass pipeline description.\n";
return false;
}
if (VK > VK_NoVerifier)
MPM.addPass(VerifierPass());
if (EnableDebugify)
MPM.addPass(NewPMCheckDebugifyPass());
// Add any relevant output pass at the end of the pipeline.
switch (OK) {
case OK_NoOutput:
break; // No output pass needed.
case OK_OutputAssembly:
MPM.addPass(
PrintModulePass(Out->os(), "", ShouldPreserveAssemblyUseListOrder));
break;
case OK_OutputBitcode:
MPM.addPass(BitcodeWriterPass(Out->os(), ShouldPreserveBitcodeUseListOrder,
EmitSummaryIndex, EmitModuleHash));
break;
case OK_OutputThinLTOBitcode:
MPM.addPass(ThinLTOBitcodeWriterPass(
Out->os(), ThinLTOLinkOut ? &ThinLTOLinkOut->os() : nullptr));
break;
}
// Before executing passes, print the final values of the LLVM options.
cl::PrintOptionValues();
// Now that we have all of the passes ready, run them.
MPM.run(M, MAM);
// Declare success.
if (OK != OK_NoOutput) {
Out->keep();
if (OK == OK_OutputThinLTOBitcode && ThinLTOLinkOut)
ThinLTOLinkOut->keep();
}
if (OptRemarkFile)
OptRemarkFile->keep();
return true;
}