forked from OSchip/llvm-project
939 lines
31 KiB
C++
939 lines
31 KiB
C++
//===- opt.cpp - The LLVM Modular Optimizer -------------------------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Optimizations may be specified an arbitrary number of times on the command
|
|
// line, They are run in the order specified.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "BreakpointPrinter.h"
|
|
#include "Debugify.h"
|
|
#include "NewPMDriver.h"
|
|
#include "PassPrinters.h"
|
|
#include "llvm/ADT/Triple.h"
|
|
#include "llvm/Analysis/CallGraph.h"
|
|
#include "llvm/Analysis/CallGraphSCCPass.h"
|
|
#include "llvm/Analysis/LoopPass.h"
|
|
#include "llvm/Analysis/RegionPass.h"
|
|
#include "llvm/Analysis/TargetLibraryInfo.h"
|
|
#include "llvm/Analysis/TargetTransformInfo.h"
|
|
#include "llvm/Bitcode/BitcodeWriterPass.h"
|
|
#include "llvm/CodeGen/CommandFlags.inc"
|
|
#include "llvm/CodeGen/TargetPassConfig.h"
|
|
#include "llvm/Config/llvm-config.h"
|
|
#include "llvm/IR/DataLayout.h"
|
|
#include "llvm/IR/DebugInfo.h"
|
|
#include "llvm/IR/IRPrintingPasses.h"
|
|
#include "llvm/IR/LLVMContext.h"
|
|
#include "llvm/IR/LegacyPassManager.h"
|
|
#include "llvm/IR/LegacyPassNameParser.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "llvm/IR/RemarkStreamer.h"
|
|
#include "llvm/IR/Verifier.h"
|
|
#include "llvm/IRReader/IRReader.h"
|
|
#include "llvm/InitializePasses.h"
|
|
#include "llvm/LinkAllIR.h"
|
|
#include "llvm/LinkAllPasses.h"
|
|
#include "llvm/MC/SubtargetFeature.h"
|
|
#include "llvm/Support/Debug.h"
|
|
#include "llvm/Support/FileSystem.h"
|
|
#include "llvm/Support/Host.h"
|
|
#include "llvm/Support/InitLLVM.h"
|
|
#include "llvm/Support/PluginLoader.h"
|
|
#include "llvm/Support/SourceMgr.h"
|
|
#include "llvm/Support/SystemUtils.h"
|
|
#include "llvm/Support/TargetRegistry.h"
|
|
#include "llvm/Support/TargetSelect.h"
|
|
#include "llvm/Support/ToolOutputFile.h"
|
|
#include "llvm/Support/YAMLTraits.h"
|
|
#include "llvm/Target/TargetMachine.h"
|
|
#include "llvm/Transforms/Coroutines.h"
|
|
#include "llvm/Transforms/IPO/AlwaysInliner.h"
|
|
#include "llvm/Transforms/IPO/PassManagerBuilder.h"
|
|
#include "llvm/Transforms/Utils/Cloning.h"
|
|
#include <algorithm>
|
|
#include <memory>
|
|
using namespace llvm;
|
|
using namespace opt_tool;
|
|
|
|
// The OptimizationList is automatically populated with registered Passes by the
|
|
// PassNameParser.
|
|
//
|
|
static cl::list<const PassInfo*, bool, PassNameParser>
|
|
PassList(cl::desc("Optimizations available:"));
|
|
|
|
// This flag specifies a textual description of the optimization pass pipeline
|
|
// to run over the module. This flag switches opt to use the new pass manager
|
|
// infrastructure, completely disabling all of the flags specific to the old
|
|
// pass management.
|
|
static cl::opt<std::string> PassPipeline(
|
|
"passes",
|
|
cl::desc("A textual description of the pass pipeline for optimizing"),
|
|
cl::Hidden);
|
|
|
|
// Other command line options...
|
|
//
|
|
static cl::opt<std::string>
|
|
InputFilename(cl::Positional, cl::desc("<input bitcode file>"),
|
|
cl::init("-"), cl::value_desc("filename"));
|
|
|
|
static cl::opt<std::string>
|
|
OutputFilename("o", cl::desc("Override output filename"),
|
|
cl::value_desc("filename"));
|
|
|
|
static cl::opt<bool>
|
|
Force("f", cl::desc("Enable binary output on terminals"));
|
|
|
|
static cl::opt<bool>
|
|
PrintEachXForm("p", cl::desc("Print module after each transformation"));
|
|
|
|
static cl::opt<bool>
|
|
NoOutput("disable-output",
|
|
cl::desc("Do not write result bitcode file"), cl::Hidden);
|
|
|
|
static cl::opt<bool>
|
|
OutputAssembly("S", cl::desc("Write output as LLVM assembly"));
|
|
|
|
static cl::opt<bool>
|
|
OutputThinLTOBC("thinlto-bc",
|
|
cl::desc("Write output as ThinLTO-ready bitcode"));
|
|
|
|
static cl::opt<bool>
|
|
SplitLTOUnit("thinlto-split-lto-unit",
|
|
cl::desc("Enable splitting of a ThinLTO LTOUnit"));
|
|
|
|
static cl::opt<std::string> ThinLinkBitcodeFile(
|
|
"thin-link-bitcode-file", cl::value_desc("filename"),
|
|
cl::desc(
|
|
"A file in which to write minimized bitcode for the thin link only"));
|
|
|
|
static cl::opt<bool>
|
|
NoVerify("disable-verify", cl::desc("Do not run the verifier"), cl::Hidden);
|
|
|
|
static cl::opt<bool>
|
|
VerifyEach("verify-each", cl::desc("Verify after each transform"));
|
|
|
|
static cl::opt<bool>
|
|
DisableDITypeMap("disable-debug-info-type-map",
|
|
cl::desc("Don't use a uniquing type map for debug info"));
|
|
|
|
static cl::opt<bool>
|
|
StripDebug("strip-debug",
|
|
cl::desc("Strip debugger symbol info from translation unit"));
|
|
|
|
static cl::opt<bool>
|
|
StripNamedMetadata("strip-named-metadata",
|
|
cl::desc("Strip module-level named metadata"));
|
|
|
|
static cl::opt<bool> DisableInline("disable-inlining",
|
|
cl::desc("Do not run the inliner pass"));
|
|
|
|
static cl::opt<bool>
|
|
DisableOptimizations("disable-opt",
|
|
cl::desc("Do not run any optimization passes"));
|
|
|
|
static cl::opt<bool>
|
|
StandardLinkOpts("std-link-opts",
|
|
cl::desc("Include the standard link time optimizations"));
|
|
|
|
static cl::opt<bool>
|
|
OptLevelO0("O0",
|
|
cl::desc("Optimization level 0. Similar to clang -O0"));
|
|
|
|
static cl::opt<bool>
|
|
OptLevelO1("O1",
|
|
cl::desc("Optimization level 1. Similar to clang -O1"));
|
|
|
|
static cl::opt<bool>
|
|
OptLevelO2("O2",
|
|
cl::desc("Optimization level 2. Similar to clang -O2"));
|
|
|
|
static cl::opt<bool>
|
|
OptLevelOs("Os",
|
|
cl::desc("Like -O2 with extra optimizations for size. Similar to clang -Os"));
|
|
|
|
static cl::opt<bool>
|
|
OptLevelOz("Oz",
|
|
cl::desc("Like -Os but reduces code size further. Similar to clang -Oz"));
|
|
|
|
static cl::opt<bool>
|
|
OptLevelO3("O3",
|
|
cl::desc("Optimization level 3. Similar to clang -O3"));
|
|
|
|
static cl::opt<unsigned>
|
|
CodeGenOptLevel("codegen-opt-level",
|
|
cl::desc("Override optimization level for codegen hooks"));
|
|
|
|
static cl::opt<std::string>
|
|
TargetTriple("mtriple", cl::desc("Override target triple for module"));
|
|
|
|
static cl::opt<bool>
|
|
DisableLoopUnrolling("disable-loop-unrolling",
|
|
cl::desc("Disable loop unrolling in all relevant passes"),
|
|
cl::init(false));
|
|
|
|
static cl::opt<bool>
|
|
DisableSLPVectorization("disable-slp-vectorization",
|
|
cl::desc("Disable the slp vectorization pass"),
|
|
cl::init(false));
|
|
|
|
static cl::opt<bool> EmitSummaryIndex("module-summary",
|
|
cl::desc("Emit module summary index"),
|
|
cl::init(false));
|
|
|
|
static cl::opt<bool> EmitModuleHash("module-hash", cl::desc("Emit module hash"),
|
|
cl::init(false));
|
|
|
|
static cl::opt<bool>
|
|
DisableSimplifyLibCalls("disable-simplify-libcalls",
|
|
cl::desc("Disable simplify-libcalls"));
|
|
|
|
static cl::opt<bool>
|
|
Quiet("q", cl::desc("Obsolete option"), cl::Hidden);
|
|
|
|
static cl::alias
|
|
QuietA("quiet", cl::desc("Alias for -q"), cl::aliasopt(Quiet));
|
|
|
|
static cl::opt<bool>
|
|
AnalyzeOnly("analyze", cl::desc("Only perform analysis, no optimization"));
|
|
|
|
static cl::opt<bool> EnableDebugify(
|
|
"enable-debugify",
|
|
cl::desc(
|
|
"Start the pipeline with debugify and end it with check-debugify"));
|
|
|
|
static cl::opt<bool> DebugifyEach(
|
|
"debugify-each",
|
|
cl::desc(
|
|
"Start each pass with debugify and end it with check-debugify"));
|
|
|
|
static cl::opt<std::string>
|
|
DebugifyExport("debugify-export",
|
|
cl::desc("Export per-pass debugify statistics to this file"),
|
|
cl::value_desc("filename"), cl::init(""));
|
|
|
|
static cl::opt<bool>
|
|
PrintBreakpoints("print-breakpoints-for-testing",
|
|
cl::desc("Print select breakpoints location for testing"));
|
|
|
|
static cl::opt<std::string> ClDataLayout("data-layout",
|
|
cl::desc("data layout string to use"),
|
|
cl::value_desc("layout-string"),
|
|
cl::init(""));
|
|
|
|
static cl::opt<bool> PreserveBitcodeUseListOrder(
|
|
"preserve-bc-uselistorder",
|
|
cl::desc("Preserve use-list order when writing LLVM bitcode."),
|
|
cl::init(true), cl::Hidden);
|
|
|
|
static cl::opt<bool> PreserveAssemblyUseListOrder(
|
|
"preserve-ll-uselistorder",
|
|
cl::desc("Preserve use-list order when writing LLVM assembly."),
|
|
cl::init(false), cl::Hidden);
|
|
|
|
static cl::opt<bool>
|
|
RunTwice("run-twice",
|
|
cl::desc("Run all passes twice, re-using the same pass manager."),
|
|
cl::init(false), cl::Hidden);
|
|
|
|
static cl::opt<bool> DiscardValueNames(
|
|
"discard-value-names",
|
|
cl::desc("Discard names from Value (other than GlobalValue)."),
|
|
cl::init(false), cl::Hidden);
|
|
|
|
static cl::opt<bool> Coroutines(
|
|
"enable-coroutines",
|
|
cl::desc("Enable coroutine passes."),
|
|
cl::init(false), cl::Hidden);
|
|
|
|
static cl::opt<bool> RemarksWithHotness(
|
|
"pass-remarks-with-hotness",
|
|
cl::desc("With PGO, include profile count in optimization remarks"),
|
|
cl::Hidden);
|
|
|
|
static cl::opt<unsigned>
|
|
RemarksHotnessThreshold("pass-remarks-hotness-threshold",
|
|
cl::desc("Minimum profile count required for "
|
|
"an optimization remark to be output"),
|
|
cl::Hidden);
|
|
|
|
static cl::opt<std::string>
|
|
RemarksFilename("pass-remarks-output",
|
|
cl::desc("Output filename for pass remarks"),
|
|
cl::value_desc("filename"));
|
|
|
|
static cl::opt<std::string>
|
|
RemarksPasses("pass-remarks-filter",
|
|
cl::desc("Only record optimization remarks from passes whose "
|
|
"names match the given regular expression"),
|
|
cl::value_desc("regex"));
|
|
|
|
static cl::opt<std::string> RemarksFormat(
|
|
"pass-remarks-format",
|
|
cl::desc("The format used for serializing remarks (default: YAML)"),
|
|
cl::value_desc("format"), cl::init("yaml"));
|
|
|
|
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, "pgo-instr-gen-pipeline",
|
|
"Instrument the IR to generate profile."),
|
|
clEnumValN(InstrUse, "pgo-instr-use-pipeline",
|
|
"Use instrumented profile to guide PGO."),
|
|
clEnumValN(SampleUse, "pgo-sample-use-pipeline",
|
|
"Use sampled profile to guide PGO.")));
|
|
cl::opt<std::string> ProfileFile("profile-file",
|
|
cl::desc("Path to the profile."), cl::Hidden);
|
|
|
|
cl::opt<CSPGOKind> CSPGOKindFlag(
|
|
"cspgo-kind", cl::init(NoCSPGO), cl::Hidden,
|
|
cl::desc("The kind of context sensitive profile guided optimization"),
|
|
cl::values(
|
|
clEnumValN(NoCSPGO, "nocspgo", "Do not use CSPGO."),
|
|
clEnumValN(
|
|
CSInstrGen, "cspgo-instr-gen-pipeline",
|
|
"Instrument (context sensitive) the IR to generate profile."),
|
|
clEnumValN(
|
|
CSInstrUse, "cspgo-instr-use-pipeline",
|
|
"Use instrumented (context sensitive) profile to guide PGO.")));
|
|
cl::opt<std::string> CSProfileGenFile(
|
|
"cs-profilegen-file",
|
|
cl::desc("Path to the instrumented context sensitive profile."),
|
|
cl::Hidden);
|
|
|
|
class OptCustomPassManager : public legacy::PassManager {
|
|
DebugifyStatsMap DIStatsMap;
|
|
|
|
public:
|
|
using super = legacy::PassManager;
|
|
|
|
void add(Pass *P) override {
|
|
// Wrap each pass with (-check)-debugify passes if requested, making
|
|
// exceptions for passes which shouldn't see -debugify instrumentation.
|
|
bool WrapWithDebugify = DebugifyEach && !P->getAsImmutablePass() &&
|
|
!isIRPrintingPass(P) && !isBitcodeWriterPass(P);
|
|
if (!WrapWithDebugify) {
|
|
super::add(P);
|
|
return;
|
|
}
|
|
|
|
// Apply -debugify/-check-debugify before/after each pass and collect
|
|
// debug info loss statistics.
|
|
PassKind Kind = P->getPassKind();
|
|
StringRef Name = P->getPassName();
|
|
|
|
// TODO: Implement Debugify for BasicBlockPass, LoopPass.
|
|
switch (Kind) {
|
|
case PT_Function:
|
|
super::add(createDebugifyFunctionPass());
|
|
super::add(P);
|
|
super::add(createCheckDebugifyFunctionPass(true, Name, &DIStatsMap));
|
|
break;
|
|
case PT_Module:
|
|
super::add(createDebugifyModulePass());
|
|
super::add(P);
|
|
super::add(createCheckDebugifyModulePass(true, Name, &DIStatsMap));
|
|
break;
|
|
default:
|
|
super::add(P);
|
|
break;
|
|
}
|
|
}
|
|
|
|
const DebugifyStatsMap &getDebugifyStatsMap() const { return DIStatsMap; }
|
|
};
|
|
|
|
static inline void addPass(legacy::PassManagerBase &PM, Pass *P) {
|
|
// Add the pass to the pass manager...
|
|
PM.add(P);
|
|
|
|
// If we are verifying all of the intermediate steps, add the verifier...
|
|
if (VerifyEach)
|
|
PM.add(createVerifierPass());
|
|
}
|
|
|
|
/// This routine adds optimization passes based on selected optimization level,
|
|
/// OptLevel.
|
|
///
|
|
/// OptLevel - Optimization Level
|
|
static void AddOptimizationPasses(legacy::PassManagerBase &MPM,
|
|
legacy::FunctionPassManager &FPM,
|
|
TargetMachine *TM, unsigned OptLevel,
|
|
unsigned SizeLevel) {
|
|
if (!NoVerify || VerifyEach)
|
|
FPM.add(createVerifierPass()); // Verify that input is correct
|
|
|
|
PassManagerBuilder Builder;
|
|
Builder.OptLevel = OptLevel;
|
|
Builder.SizeLevel = SizeLevel;
|
|
|
|
if (DisableInline) {
|
|
// No inlining pass
|
|
} else if (OptLevel > 1) {
|
|
Builder.Inliner = createFunctionInliningPass(OptLevel, SizeLevel, false);
|
|
} else {
|
|
Builder.Inliner = createAlwaysInlinerLegacyPass();
|
|
}
|
|
Builder.DisableUnrollLoops = (DisableLoopUnrolling.getNumOccurrences() > 0) ?
|
|
DisableLoopUnrolling : OptLevel == 0;
|
|
|
|
// Check if vectorization is explicitly disabled via -vectorize-loops=false.
|
|
// The flag enables vectorization in the LoopVectorize pass, it is on by
|
|
// default, and if it was disabled, leave it disabled here.
|
|
// Another flag that exists: -loop-vectorize, controls adding the pass to the
|
|
// pass manager. If set, the pass is added, and there is no additional check
|
|
// here for it.
|
|
if (Builder.LoopVectorize)
|
|
Builder.LoopVectorize = OptLevel > 1 && SizeLevel < 2;
|
|
|
|
// When #pragma vectorize is on for SLP, do the same as above
|
|
Builder.SLPVectorize =
|
|
DisableSLPVectorization ? false : OptLevel > 1 && SizeLevel < 2;
|
|
|
|
if (TM)
|
|
TM->adjustPassManager(Builder);
|
|
|
|
if (Coroutines)
|
|
addCoroutinePassesToExtensionPoints(Builder);
|
|
|
|
switch (PGOKindFlag) {
|
|
case InstrGen:
|
|
Builder.EnablePGOInstrGen = true;
|
|
Builder.PGOInstrGen = ProfileFile;
|
|
break;
|
|
case InstrUse:
|
|
Builder.PGOInstrUse = ProfileFile;
|
|
break;
|
|
case SampleUse:
|
|
Builder.PGOSampleUse = ProfileFile;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
switch (CSPGOKindFlag) {
|
|
case CSInstrGen:
|
|
Builder.EnablePGOCSInstrGen = true;
|
|
break;
|
|
case CSInstrUse:
|
|
Builder.EnablePGOCSInstrUse = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
Builder.populateFunctionPassManager(FPM);
|
|
Builder.populateModulePassManager(MPM);
|
|
}
|
|
|
|
static void AddStandardLinkPasses(legacy::PassManagerBase &PM) {
|
|
PassManagerBuilder Builder;
|
|
Builder.VerifyInput = true;
|
|
if (DisableOptimizations)
|
|
Builder.OptLevel = 0;
|
|
|
|
if (!DisableInline)
|
|
Builder.Inliner = createFunctionInliningPass();
|
|
Builder.populateLTOPassManager(PM);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// CodeGen-related helper functions.
|
|
//
|
|
|
|
static CodeGenOpt::Level GetCodeGenOptLevel() {
|
|
if (CodeGenOptLevel.getNumOccurrences())
|
|
return static_cast<CodeGenOpt::Level>(unsigned(CodeGenOptLevel));
|
|
if (OptLevelO1)
|
|
return CodeGenOpt::Less;
|
|
if (OptLevelO2)
|
|
return CodeGenOpt::Default;
|
|
if (OptLevelO3)
|
|
return CodeGenOpt::Aggressive;
|
|
return CodeGenOpt::None;
|
|
}
|
|
|
|
// Returns the TargetMachine instance or zero if no triple is provided.
|
|
static TargetMachine* GetTargetMachine(Triple TheTriple, StringRef CPUStr,
|
|
StringRef FeaturesStr,
|
|
const TargetOptions &Options) {
|
|
std::string Error;
|
|
const Target *TheTarget = TargetRegistry::lookupTarget(MArch, TheTriple,
|
|
Error);
|
|
// Some modules don't specify a triple, and this is okay.
|
|
if (!TheTarget) {
|
|
return nullptr;
|
|
}
|
|
|
|
return TheTarget->createTargetMachine(TheTriple.getTriple(), CPUStr,
|
|
FeaturesStr, Options, getRelocModel(),
|
|
getCodeModel(), GetCodeGenOptLevel());
|
|
}
|
|
|
|
#ifdef LINK_POLLY_INTO_TOOLS
|
|
namespace polly {
|
|
void initializePollyPasses(llvm::PassRegistry &Registry);
|
|
}
|
|
#endif
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// main for opt
|
|
//
|
|
int main(int argc, char **argv) {
|
|
InitLLVM X(argc, argv);
|
|
|
|
// Enable debug stream buffering.
|
|
EnableDebugBuffering = true;
|
|
|
|
LLVMContext Context;
|
|
|
|
InitializeAllTargets();
|
|
InitializeAllTargetMCs();
|
|
InitializeAllAsmPrinters();
|
|
InitializeAllAsmParsers();
|
|
|
|
// Initialize passes
|
|
PassRegistry &Registry = *PassRegistry::getPassRegistry();
|
|
initializeCore(Registry);
|
|
initializeCoroutines(Registry);
|
|
initializeScalarOpts(Registry);
|
|
initializeObjCARCOpts(Registry);
|
|
initializeVectorization(Registry);
|
|
initializeIPO(Registry);
|
|
initializeAnalysis(Registry);
|
|
initializeTransformUtils(Registry);
|
|
initializeInstCombine(Registry);
|
|
initializeAggressiveInstCombine(Registry);
|
|
initializeInstrumentation(Registry);
|
|
initializeTarget(Registry);
|
|
// For codegen passes, only passes that do IR to IR transformation are
|
|
// supported.
|
|
initializeExpandMemCmpPassPass(Registry);
|
|
initializeScalarizeMaskedMemIntrinPass(Registry);
|
|
initializeCodeGenPreparePass(Registry);
|
|
initializeAtomicExpandPass(Registry);
|
|
initializeRewriteSymbolsLegacyPassPass(Registry);
|
|
initializeWinEHPreparePass(Registry);
|
|
initializeDwarfEHPreparePass(Registry);
|
|
initializeSafeStackLegacyPassPass(Registry);
|
|
initializeSjLjEHPreparePass(Registry);
|
|
initializePreISelIntrinsicLoweringLegacyPassPass(Registry);
|
|
initializeGlobalMergePass(Registry);
|
|
initializeIndirectBrExpandPassPass(Registry);
|
|
initializeInterleavedLoadCombinePass(Registry);
|
|
initializeInterleavedAccessPass(Registry);
|
|
initializeEntryExitInstrumenterPass(Registry);
|
|
initializePostInlineEntryExitInstrumenterPass(Registry);
|
|
initializeUnreachableBlockElimLegacyPassPass(Registry);
|
|
initializeExpandReductionsPass(Registry);
|
|
initializeWasmEHPreparePass(Registry);
|
|
initializeWriteBitcodePassPass(Registry);
|
|
initializeHardwareLoopsPass(Registry);
|
|
|
|
#ifdef LINK_POLLY_INTO_TOOLS
|
|
polly::initializePollyPasses(Registry);
|
|
#endif
|
|
|
|
cl::ParseCommandLineOptions(argc, argv,
|
|
"llvm .bc -> .bc modular optimizer and analysis printer\n");
|
|
|
|
if (AnalyzeOnly && NoOutput) {
|
|
errs() << argv[0] << ": analyze mode conflicts with no-output mode.\n";
|
|
return 1;
|
|
}
|
|
|
|
SMDiagnostic Err;
|
|
|
|
Context.setDiscardValueNames(DiscardValueNames);
|
|
if (!DisableDITypeMap)
|
|
Context.enableDebugTypeODRUniquing();
|
|
|
|
Expected<std::unique_ptr<ToolOutputFile>> RemarksFileOrErr =
|
|
setupOptimizationRemarks(Context, RemarksFilename, RemarksPasses,
|
|
RemarksFormat, RemarksWithHotness,
|
|
RemarksHotnessThreshold);
|
|
if (Error E = RemarksFileOrErr.takeError()) {
|
|
errs() << toString(std::move(E)) << '\n';
|
|
return 1;
|
|
}
|
|
std::unique_ptr<ToolOutputFile> RemarksFile = std::move(*RemarksFileOrErr);
|
|
|
|
// Load the input module...
|
|
std::unique_ptr<Module> M =
|
|
parseIRFile(InputFilename, Err, Context, !NoVerify, ClDataLayout);
|
|
|
|
if (!M) {
|
|
Err.print(argv[0], errs());
|
|
return 1;
|
|
}
|
|
|
|
// Strip debug info before running the verifier.
|
|
if (StripDebug)
|
|
StripDebugInfo(*M);
|
|
|
|
// Erase module-level named metadata, if requested.
|
|
if (StripNamedMetadata) {
|
|
while (!M->named_metadata_empty()) {
|
|
NamedMDNode *NMD = &*M->named_metadata_begin();
|
|
M->eraseNamedMetadata(NMD);
|
|
}
|
|
}
|
|
|
|
// If we are supposed to override the target triple or data layout, do so now.
|
|
if (!TargetTriple.empty())
|
|
M->setTargetTriple(Triple::normalize(TargetTriple));
|
|
|
|
// Immediately run the verifier to catch any problems before starting up the
|
|
// pass pipelines. Otherwise we can crash on broken code during
|
|
// doInitialization().
|
|
if (!NoVerify && verifyModule(*M, &errs())) {
|
|
errs() << argv[0] << ": " << InputFilename
|
|
<< ": error: input module is broken!\n";
|
|
return 1;
|
|
}
|
|
|
|
// Figure out what stream we are supposed to write to...
|
|
std::unique_ptr<ToolOutputFile> Out;
|
|
std::unique_ptr<ToolOutputFile> ThinLinkOut;
|
|
if (NoOutput) {
|
|
if (!OutputFilename.empty())
|
|
errs() << "WARNING: The -o (output filename) option is ignored when\n"
|
|
"the --disable-output option is used.\n";
|
|
} else {
|
|
// Default to standard output.
|
|
if (OutputFilename.empty())
|
|
OutputFilename = "-";
|
|
|
|
std::error_code EC;
|
|
sys::fs::OpenFlags Flags = OutputAssembly ? sys::fs::OF_Text
|
|
: sys::fs::OF_None;
|
|
Out.reset(new ToolOutputFile(OutputFilename, EC, Flags));
|
|
if (EC) {
|
|
errs() << EC.message() << '\n';
|
|
return 1;
|
|
}
|
|
|
|
if (!ThinLinkBitcodeFile.empty()) {
|
|
ThinLinkOut.reset(
|
|
new ToolOutputFile(ThinLinkBitcodeFile, EC, sys::fs::OF_None));
|
|
if (EC) {
|
|
errs() << EC.message() << '\n';
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
Triple ModuleTriple(M->getTargetTriple());
|
|
std::string CPUStr, FeaturesStr;
|
|
TargetMachine *Machine = nullptr;
|
|
const TargetOptions Options = InitTargetOptionsFromCodeGenFlags();
|
|
|
|
if (ModuleTriple.getArch()) {
|
|
CPUStr = getCPUStr();
|
|
FeaturesStr = getFeaturesStr();
|
|
Machine = GetTargetMachine(ModuleTriple, CPUStr, FeaturesStr, Options);
|
|
} else if (ModuleTriple.getArchName() != "unknown" &&
|
|
ModuleTriple.getArchName() != "") {
|
|
errs() << argv[0] << ": unrecognized architecture '"
|
|
<< ModuleTriple.getArchName() << "' provided.\n";
|
|
return 1;
|
|
}
|
|
|
|
std::unique_ptr<TargetMachine> TM(Machine);
|
|
|
|
// Override function attributes based on CPUStr, FeaturesStr, and command line
|
|
// flags.
|
|
setFunctionAttributes(CPUStr, FeaturesStr, *M);
|
|
|
|
// If the output is set to be emitted to standard out, and standard out is a
|
|
// console, print out a warning message and refuse to do it. We don't
|
|
// impress anyone by spewing tons of binary goo to a terminal.
|
|
if (!Force && !NoOutput && !AnalyzeOnly && !OutputAssembly)
|
|
if (CheckBitcodeOutputToConsole(Out->os(), !Quiet))
|
|
NoOutput = true;
|
|
|
|
if (OutputThinLTOBC)
|
|
M->addModuleFlag(Module::Error, "EnableSplitLTOUnit", SplitLTOUnit);
|
|
|
|
if (PassPipeline.getNumOccurrences() > 0) {
|
|
OutputKind OK = OK_NoOutput;
|
|
if (!NoOutput)
|
|
OK = OutputAssembly
|
|
? OK_OutputAssembly
|
|
: (OutputThinLTOBC ? OK_OutputThinLTOBitcode : OK_OutputBitcode);
|
|
|
|
VerifierKind VK = VK_VerifyInAndOut;
|
|
if (NoVerify)
|
|
VK = VK_NoVerifier;
|
|
else if (VerifyEach)
|
|
VK = VK_VerifyEachPass;
|
|
|
|
// The user has asked to use the new pass manager and provided a pipeline
|
|
// string. Hand off the rest of the functionality to the new code for that
|
|
// layer.
|
|
return runPassPipeline(argv[0], *M, TM.get(), Out.get(), ThinLinkOut.get(),
|
|
RemarksFile.get(), PassPipeline, OK, VK,
|
|
PreserveAssemblyUseListOrder,
|
|
PreserveBitcodeUseListOrder, EmitSummaryIndex,
|
|
EmitModuleHash, EnableDebugify)
|
|
? 0
|
|
: 1;
|
|
}
|
|
|
|
// Create a PassManager to hold and optimize the collection of passes we are
|
|
// about to build.
|
|
OptCustomPassManager Passes;
|
|
bool AddOneTimeDebugifyPasses = EnableDebugify && !DebugifyEach;
|
|
|
|
// Add an appropriate TargetLibraryInfo pass for the module's triple.
|
|
TargetLibraryInfoImpl TLII(ModuleTriple);
|
|
|
|
// The -disable-simplify-libcalls flag actually disables all builtin optzns.
|
|
if (DisableSimplifyLibCalls)
|
|
TLII.disableAllFunctions();
|
|
Passes.add(new TargetLibraryInfoWrapperPass(TLII));
|
|
|
|
// Add internal analysis passes from the target machine.
|
|
Passes.add(createTargetTransformInfoWrapperPass(TM ? TM->getTargetIRAnalysis()
|
|
: TargetIRAnalysis()));
|
|
|
|
if (AddOneTimeDebugifyPasses)
|
|
Passes.add(createDebugifyModulePass());
|
|
|
|
std::unique_ptr<legacy::FunctionPassManager> FPasses;
|
|
if (OptLevelO0 || OptLevelO1 || OptLevelO2 || OptLevelOs || OptLevelOz ||
|
|
OptLevelO3) {
|
|
FPasses.reset(new legacy::FunctionPassManager(M.get()));
|
|
FPasses->add(createTargetTransformInfoWrapperPass(
|
|
TM ? TM->getTargetIRAnalysis() : TargetIRAnalysis()));
|
|
}
|
|
|
|
if (PrintBreakpoints) {
|
|
// Default to standard output.
|
|
if (!Out) {
|
|
if (OutputFilename.empty())
|
|
OutputFilename = "-";
|
|
|
|
std::error_code EC;
|
|
Out = std::make_unique<ToolOutputFile>(OutputFilename, EC,
|
|
sys::fs::OF_None);
|
|
if (EC) {
|
|
errs() << EC.message() << '\n';
|
|
return 1;
|
|
}
|
|
}
|
|
Passes.add(createBreakpointPrinter(Out->os()));
|
|
NoOutput = true;
|
|
}
|
|
|
|
if (TM) {
|
|
// FIXME: We should dyn_cast this when supported.
|
|
auto <M = static_cast<LLVMTargetMachine &>(*TM);
|
|
Pass *TPC = LTM.createPassConfig(Passes);
|
|
Passes.add(TPC);
|
|
}
|
|
|
|
// Create a new optimization pass for each one specified on the command line
|
|
for (unsigned i = 0; i < PassList.size(); ++i) {
|
|
if (StandardLinkOpts &&
|
|
StandardLinkOpts.getPosition() < PassList.getPosition(i)) {
|
|
AddStandardLinkPasses(Passes);
|
|
StandardLinkOpts = false;
|
|
}
|
|
|
|
if (OptLevelO0 && OptLevelO0.getPosition() < PassList.getPosition(i)) {
|
|
AddOptimizationPasses(Passes, *FPasses, TM.get(), 0, 0);
|
|
OptLevelO0 = false;
|
|
}
|
|
|
|
if (OptLevelO1 && OptLevelO1.getPosition() < PassList.getPosition(i)) {
|
|
AddOptimizationPasses(Passes, *FPasses, TM.get(), 1, 0);
|
|
OptLevelO1 = false;
|
|
}
|
|
|
|
if (OptLevelO2 && OptLevelO2.getPosition() < PassList.getPosition(i)) {
|
|
AddOptimizationPasses(Passes, *FPasses, TM.get(), 2, 0);
|
|
OptLevelO2 = false;
|
|
}
|
|
|
|
if (OptLevelOs && OptLevelOs.getPosition() < PassList.getPosition(i)) {
|
|
AddOptimizationPasses(Passes, *FPasses, TM.get(), 2, 1);
|
|
OptLevelOs = false;
|
|
}
|
|
|
|
if (OptLevelOz && OptLevelOz.getPosition() < PassList.getPosition(i)) {
|
|
AddOptimizationPasses(Passes, *FPasses, TM.get(), 2, 2);
|
|
OptLevelOz = false;
|
|
}
|
|
|
|
if (OptLevelO3 && OptLevelO3.getPosition() < PassList.getPosition(i)) {
|
|
AddOptimizationPasses(Passes, *FPasses, TM.get(), 3, 0);
|
|
OptLevelO3 = false;
|
|
}
|
|
|
|
const PassInfo *PassInf = PassList[i];
|
|
Pass *P = nullptr;
|
|
if (PassInf->getNormalCtor())
|
|
P = PassInf->getNormalCtor()();
|
|
else
|
|
errs() << argv[0] << ": cannot create pass: "
|
|
<< PassInf->getPassName() << "\n";
|
|
if (P) {
|
|
PassKind Kind = P->getPassKind();
|
|
addPass(Passes, P);
|
|
|
|
if (AnalyzeOnly) {
|
|
switch (Kind) {
|
|
case PT_BasicBlock:
|
|
Passes.add(createBasicBlockPassPrinter(PassInf, Out->os(), Quiet));
|
|
break;
|
|
case PT_Region:
|
|
Passes.add(createRegionPassPrinter(PassInf, Out->os(), Quiet));
|
|
break;
|
|
case PT_Loop:
|
|
Passes.add(createLoopPassPrinter(PassInf, Out->os(), Quiet));
|
|
break;
|
|
case PT_Function:
|
|
Passes.add(createFunctionPassPrinter(PassInf, Out->os(), Quiet));
|
|
break;
|
|
case PT_CallGraphSCC:
|
|
Passes.add(createCallGraphPassPrinter(PassInf, Out->os(), Quiet));
|
|
break;
|
|
default:
|
|
Passes.add(createModulePassPrinter(PassInf, Out->os(), Quiet));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (PrintEachXForm)
|
|
Passes.add(
|
|
createPrintModulePass(errs(), "", PreserveAssemblyUseListOrder));
|
|
}
|
|
|
|
if (StandardLinkOpts) {
|
|
AddStandardLinkPasses(Passes);
|
|
StandardLinkOpts = false;
|
|
}
|
|
|
|
if (OptLevelO0)
|
|
AddOptimizationPasses(Passes, *FPasses, TM.get(), 0, 0);
|
|
|
|
if (OptLevelO1)
|
|
AddOptimizationPasses(Passes, *FPasses, TM.get(), 1, 0);
|
|
|
|
if (OptLevelO2)
|
|
AddOptimizationPasses(Passes, *FPasses, TM.get(), 2, 0);
|
|
|
|
if (OptLevelOs)
|
|
AddOptimizationPasses(Passes, *FPasses, TM.get(), 2, 1);
|
|
|
|
if (OptLevelOz)
|
|
AddOptimizationPasses(Passes, *FPasses, TM.get(), 2, 2);
|
|
|
|
if (OptLevelO3)
|
|
AddOptimizationPasses(Passes, *FPasses, TM.get(), 3, 0);
|
|
|
|
if (FPasses) {
|
|
FPasses->doInitialization();
|
|
for (Function &F : *M)
|
|
FPasses->run(F);
|
|
FPasses->doFinalization();
|
|
}
|
|
|
|
// Check that the module is well formed on completion of optimization
|
|
if (!NoVerify && !VerifyEach)
|
|
Passes.add(createVerifierPass());
|
|
|
|
if (AddOneTimeDebugifyPasses)
|
|
Passes.add(createCheckDebugifyModulePass(false));
|
|
|
|
// In run twice mode, we want to make sure the output is bit-by-bit
|
|
// equivalent if we run the pass manager again, so setup two buffers and
|
|
// a stream to write to them. Note that llc does something similar and it
|
|
// may be worth to abstract this out in the future.
|
|
SmallVector<char, 0> Buffer;
|
|
SmallVector<char, 0> FirstRunBuffer;
|
|
std::unique_ptr<raw_svector_ostream> BOS;
|
|
raw_ostream *OS = nullptr;
|
|
|
|
// Write bitcode or assembly to the output as the last step...
|
|
if (!NoOutput && !AnalyzeOnly) {
|
|
assert(Out);
|
|
OS = &Out->os();
|
|
if (RunTwice) {
|
|
BOS = std::make_unique<raw_svector_ostream>(Buffer);
|
|
OS = BOS.get();
|
|
}
|
|
if (OutputAssembly) {
|
|
if (EmitSummaryIndex)
|
|
report_fatal_error("Text output is incompatible with -module-summary");
|
|
if (EmitModuleHash)
|
|
report_fatal_error("Text output is incompatible with -module-hash");
|
|
Passes.add(createPrintModulePass(*OS, "", PreserveAssemblyUseListOrder));
|
|
} else if (OutputThinLTOBC)
|
|
Passes.add(createWriteThinLTOBitcodePass(
|
|
*OS, ThinLinkOut ? &ThinLinkOut->os() : nullptr));
|
|
else
|
|
Passes.add(createBitcodeWriterPass(*OS, PreserveBitcodeUseListOrder,
|
|
EmitSummaryIndex, EmitModuleHash));
|
|
}
|
|
|
|
// Before executing passes, print the final values of the LLVM options.
|
|
cl::PrintOptionValues();
|
|
|
|
if (!RunTwice) {
|
|
// Now that we have all of the passes ready, run them.
|
|
Passes.run(*M);
|
|
} else {
|
|
// If requested, run all passes twice with the same pass manager to catch
|
|
// bugs caused by persistent state in the passes.
|
|
std::unique_ptr<Module> M2(CloneModule(*M));
|
|
// Run all passes on the original module first, so the second run processes
|
|
// the clone to catch CloneModule bugs.
|
|
Passes.run(*M);
|
|
FirstRunBuffer = Buffer;
|
|
Buffer.clear();
|
|
|
|
Passes.run(*M2);
|
|
|
|
// Compare the two outputs and make sure they're the same
|
|
assert(Out);
|
|
if (Buffer.size() != FirstRunBuffer.size() ||
|
|
(memcmp(Buffer.data(), FirstRunBuffer.data(), Buffer.size()) != 0)) {
|
|
errs()
|
|
<< "Running the pass manager twice changed the output.\n"
|
|
"Writing the result of the second run to the specified output.\n"
|
|
"To generate the one-run comparison binary, just run without\n"
|
|
"the compile-twice option\n";
|
|
Out->os() << BOS->str();
|
|
Out->keep();
|
|
if (RemarksFile)
|
|
RemarksFile->keep();
|
|
return 1;
|
|
}
|
|
Out->os() << BOS->str();
|
|
}
|
|
|
|
if (DebugifyEach && !DebugifyExport.empty())
|
|
exportDebugifyStats(DebugifyExport, Passes.getDebugifyStatsMap());
|
|
|
|
// Declare success.
|
|
if (!NoOutput || PrintBreakpoints)
|
|
Out->keep();
|
|
|
|
if (RemarksFile)
|
|
RemarksFile->keep();
|
|
|
|
if (ThinLinkOut)
|
|
ThinLinkOut->keep();
|
|
|
|
return 0;
|
|
}
|