//
//===----------------------------------------------------------------------===//
+#include "BreakpointPrinter.h"
#include "NewPMDriver.h"
#include "PassPrinters.h"
-#include "llvm/ADT/StringSet.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.h"
-#include "llvm/DebugInfo.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/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/PassManager.h"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Host.h"
#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/PassNameParser.h"
#include "llvm/Support/PluginLoader.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/ToolOutputFile.h"
-#include "llvm/Target/TargetLibraryInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Transforms/IPO/PassManagerBuilder.h"
+#include "llvm/Transforms/Utils/Cloning.h"
#include <algorithm>
#include <memory>
using namespace llvm;
DisableOptimizations("disable-opt",
cl::desc("Do not run any optimization passes"));
-static cl::opt<bool>
-DisableInternalize("disable-internalize",
- cl::desc("Do not mark all symbols as internal"));
-
-static cl::opt<bool>
-StandardCompileOpts("std-compile-opts",
- cl::desc("Include the standard compile time optimizations"));
-
static cl::opt<bool>
StandardLinkOpts("std-link-opts",
cl::desc("Include the standard link time optimizations"));
static cl::opt<bool>
UnitAtATime("funit-at-a-time",
- cl::desc("Enable IPO. This is same as llvm-gcc's -funit-at-a-time"),
+ cl::desc("Enable IPO. This corresponds to gcc's -funit-at-a-time"),
cl::init(true));
static cl::opt<bool>
cl::desc("data layout string to use if not specified by module"),
cl::value_desc("layout-string"), cl::init(""));
-namespace {
-
-struct BreakpointPrinter : public ModulePass {
- raw_ostream &Out;
- static char ID;
- DITypeIdentifierMap TypeIdentifierMap;
-
- BreakpointPrinter(raw_ostream &out)
- : ModulePass(ID), Out(out) {
- }
-
- void getContextName(DIDescriptor Context, std::string &N) {
- if (Context.isNameSpace()) {
- DINameSpace NS(Context);
- if (!NS.getName().empty()) {
- getContextName(NS.getContext(), N);
- N = N + NS.getName().str() + "::";
- }
- } else if (Context.isType()) {
- DIType TY(Context);
- if (!TY.getName().empty()) {
- getContextName(TY.getContext().resolve(TypeIdentifierMap), N);
- N = N + TY.getName().str() + "::";
- }
- }
- }
+static cl::opt<bool> PreserveBitcodeUseListOrder(
+ "preserve-bc-uselistorder",
+ cl::desc("Preserve use-list order when writing LLVM bitcode."),
+ cl::init(true), cl::Hidden);
- virtual bool runOnModule(Module &M) {
- TypeIdentifierMap.clear();
- NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu");
- if (CU_Nodes)
- TypeIdentifierMap = generateDITypeIdentifierMap(CU_Nodes);
-
- StringSet<> Processed;
- if (NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.sp"))
- for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
- std::string Name;
- DISubprogram SP(NMD->getOperand(i));
- assert((!SP || SP.isSubprogram()) &&
- "A MDNode in llvm.dbg.sp should be null or a DISubprogram.");
- if (!SP)
- continue;
- getContextName(SP.getContext().resolve(TypeIdentifierMap), Name);
- Name = Name + SP.getDisplayName().str();
- if (!Name.empty() && Processed.insert(Name)) {
- Out << Name << "\n";
- }
- }
- return false;
- }
+static cl::opt<bool> PreserveAssemblyUseListOrder(
+ "preserve-ll-uselistorder",
+ cl::desc("Preserve use-list order when writing LLVM assembly."),
+ cl::init(false), cl::Hidden);
- virtual void getAnalysisUsage(AnalysisUsage &AU) const {
- AU.setPreservesAll();
- }
-};
-
-} // anonymous namespace
-
-char BreakpointPrinter::ID = 0;
+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 inline void addPass(PassManagerBase &PM, Pass *P) {
+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());
+ if (VerifyEach)
+ PM.add(createVerifierPass());
}
-/// AddOptimizationPasses - This routine adds optimization passes
-/// based on selected optimization level, OptLevel. This routine
-/// duplicates llvm-gcc behaviour.
+/// This routine adds optimization passes based on selected optimization level,
+/// OptLevel.
///
/// OptLevel - Optimization Level
-static void AddOptimizationPasses(PassManagerBase &MPM,FunctionPassManager &FPM,
+static void AddOptimizationPasses(legacy::PassManagerBase &MPM,
+ legacy::FunctionPassManager &FPM,
unsigned OptLevel, unsigned SizeLevel) {
- FPM.add(createVerifierPass()); // Verify that input is correct
+ FPM.add(createVerifierPass()); // Verify that input is correct
PassManagerBuilder Builder;
Builder.OptLevel = OptLevel;
if (DisableInline) {
// No inlining pass
} else if (OptLevel > 1) {
- unsigned Threshold = 225;
- if (SizeLevel == 1) // -Os
- Threshold = 75;
- else if (SizeLevel == 2) // -Oz
- Threshold = 25;
- if (OptLevel > 2)
- Threshold = 275;
- Builder.Inliner = createFunctionInliningPass(Threshold);
+ Builder.Inliner = createFunctionInliningPass(OptLevel, SizeLevel);
} else {
Builder.Inliner = createAlwaysInlinerPass();
}
Builder.populateModulePassManager(MPM);
}
-static void AddStandardCompilePasses(PassManagerBase &PM) {
- PM.add(createVerifierPass()); // Verify that input is correct
-
- // If the -strip-debug command line option was specified, do it.
- if (StripDebug)
- addPass(PM, createStripSymbolsPass(true));
-
- if (DisableOptimizations) return;
-
- // -std-compile-opts adds the same module passes as -O3.
+static void AddStandardLinkPasses(legacy::PassManagerBase &PM) {
PassManagerBuilder Builder;
+ Builder.VerifyInput = true;
+ if (DisableOptimizations)
+ Builder.OptLevel = 0;
+
if (!DisableInline)
Builder.Inliner = createFunctionInliningPass();
- Builder.OptLevel = 3;
- Builder.populateModulePassManager(PM);
-}
-
-static void AddStandardLinkPasses(PassManagerBase &PM) {
- PM.add(createVerifierPass()); // Verify that input is correct
-
- // If the -strip-debug command line option was specified, do it.
- if (StripDebug)
- addPass(PM, createStripSymbolsPass(true));
-
- if (DisableOptimizations) return;
-
- PassManagerBuilder Builder;
- Builder.populateLTOPassManager(PM, /*Internalize=*/ !DisableInternalize,
- /*RunInliner=*/ !DisableInline);
+ Builder.populateLTOPassManager(PM);
}
//===----------------------------------------------------------------------===//
// CodeGen-related helper functions.
//
-static TargetOptions GetTargetOptions() {
- TargetOptions Options;
- Options.LessPreciseFPMADOption = EnableFPMAD;
- Options.NoFramePointerElim = DisableFPElim;
- Options.AllowFPOpFusion = FuseFPOps;
- Options.UnsafeFPMath = EnableUnsafeFPMath;
- Options.NoInfsFPMath = EnableNoInfsFPMath;
- Options.NoNaNsFPMath = EnableNoNaNsFPMath;
- Options.HonorSignDependentRoundingFPMathOption =
- EnableHonorSignDependentRoundingFPMath;
- Options.UseSoftFloat = GenerateSoftFloatCalls;
- if (FloatABIForCalls != FloatABI::Default)
- Options.FloatABIType = FloatABIForCalls;
- Options.NoZerosInBSS = DontPlaceZerosInBSS;
- Options.GuaranteedTailCallOpt = EnableGuaranteedTailCallOpt;
- Options.DisableTailCalls = DisableTailCalls;
- Options.StackAlignmentOverride = OverrideStackAlignment;
- Options.TrapFuncName = TrapFuncName;
- Options.PositionIndependentExecutable = EnablePIE;
- Options.EnableSegmentedStacks = SegmentedStacks;
- Options.UseInitArray = UseInitArray;
- return Options;
-}
-CodeGenOpt::Level GetCodeGenOptLevel() {
+static CodeGenOpt::Level GetCodeGenOptLevel() {
if (OptLevelO1)
return CodeGenOpt::Less;
if (OptLevelO2)
}
// Returns the TargetMachine instance or zero if no triple is provided.
-static TargetMachine* GetTargetMachine(Triple TheTriple) {
+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 0;
- }
-
- // Package up features to be passed to target/subtarget
- std::string FeaturesStr;
- if (MAttrs.size()) {
- SubtargetFeatures Features;
- for (unsigned i = 0; i != MAttrs.size(); ++i)
- Features.AddFeature(MAttrs[i]);
- FeaturesStr = Features.getString();
+ return nullptr;
}
return TheTarget->createTargetMachine(TheTriple.getTriple(),
- MCPU, FeaturesStr, GetTargetOptions(),
+ CPUStr, FeaturesStr, Options,
RelocModel, CMModel,
GetCodeGenOptLevel());
}
+#ifdef LINK_POLLY_INTO_TOOLS
+namespace polly {
+void initializePollyPasses(llvm::PassRegistry &Registry);
+}
+#endif
+
//===----------------------------------------------------------------------===//
// main for opt
//
InitializeAllTargets();
InitializeAllTargetMCs();
+ InitializeAllAsmPrinters();
// Initialize passes
PassRegistry &Registry = *PassRegistry::getPassRegistry();
initializeCore(Registry);
- initializeDebugIRPass(Registry);
initializeScalarOpts(Registry);
initializeObjCARCOpts(Registry);
initializeVectorization(Registry);
initializeIPO(Registry);
initializeAnalysis(Registry);
- initializeIPA(Registry);
initializeTransformUtils(Registry);
initializeInstCombine(Registry);
initializeInstrumentation(Registry);
initializeTarget(Registry);
+ // For codegen passes, only passes that do IR to IR transformation are
+ // supported.
+ initializeCodeGenPreparePass(Registry);
+ initializeAtomicExpandPass(Registry);
+ initializeRewriteSymbolsPass(Registry);
+ initializeWinEHPreparePass(Registry);
+ initializeDwarfEHPreparePass(Registry);
+ initializeSjLjEHPreparePass(Registry);
+
+#ifdef LINK_POLLY_INTO_TOOLS
+ polly::initializePollyPasses(Registry);
+#endif
cl::ParseCommandLineOptions(argc, argv,
"llvm .bc -> .bc modular optimizer and analysis printer\n");
SMDiagnostic Err;
// Load the input module...
- OwningPtr<Module> M;
- M.reset(ParseIRFile(InputFilename, Err, Context));
+ std::unique_ptr<Module> M = parseIRFile(InputFilename, Err, Context);
- if (M.get() == 0) {
+ if (!M) {
Err.print(argv[0], errs());
return 1;
}
+ // Strip debug info before running the verifier.
+ if (StripDebug)
+ StripDebugInfo(*M);
+
+ // 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;
+ }
+
// If we are supposed to override the target triple, do so now.
if (!TargetTriple.empty())
M->setTargetTriple(Triple::normalize(TargetTriple));
// Figure out what stream we are supposed to write to...
- OwningPtr<tool_output_file> Out;
+ std::unique_ptr<tool_output_file> Out;
if (NoOutput) {
if (!OutputFilename.empty())
errs() << "WARNING: The -o (output filename) option is ignored when\n"
if (OutputFilename.empty())
OutputFilename = "-";
- std::string ErrorInfo;
- Out.reset(new tool_output_file(OutputFilename.c_str(), ErrorInfo,
- sys::fs::F_Binary));
- if (!ErrorInfo.empty()) {
- errs() << ErrorInfo << '\n';
+ std::error_code EC;
+ Out.reset(new tool_output_file(OutputFilename, EC, sys::fs::F_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);
+ }
+
+ 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.
// 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], Context, *M.get(), Out.get(), PassPipeline,
- OK, VK)
+ return runPassPipeline(argv[0], Context, *M, TM.get(), Out.get(),
+ PassPipeline, OK, VK, PreserveAssemblyUseListOrder,
+ PreserveBitcodeUseListOrder)
? 0
: 1;
}
// Create a PassManager to hold and optimize the collection of passes we are
// about to build.
//
- PassManager Passes;
+ legacy::PassManager Passes;
// Add an appropriate TargetLibraryInfo pass for the module's triple.
- TargetLibraryInfo *TLI = new TargetLibraryInfo(Triple(M->getTargetTriple()));
+ TargetLibraryInfoImpl TLII(ModuleTriple);
// The -disable-simplify-libcalls flag actually disables all builtin optzns.
if (DisableSimplifyLibCalls)
- TLI->disableAllFunctions();
- Passes.add(TLI);
+ TLII.disableAllFunctions();
+ Passes.add(new TargetLibraryInfoWrapperPass(TLII));
// Add an appropriate DataLayout instance for this module.
- DataLayout *TD = 0;
- const std::string &ModuleDataLayout = M.get()->getDataLayout();
- if (!ModuleDataLayout.empty())
- TD = new DataLayout(ModuleDataLayout);
- else if (!DefaultDataLayout.empty())
- TD = new DataLayout(DefaultDataLayout);
-
- if (TD)
- Passes.add(TD);
-
- Triple ModuleTriple(M->getTargetTriple());
- TargetMachine *Machine = 0;
- if (ModuleTriple.getArch())
- Machine = GetTargetMachine(Triple(ModuleTriple));
- OwningPtr<TargetMachine> TM(Machine);
+ const DataLayout &DL = M->getDataLayout();
+ if (DL.isDefault() && !DefaultDataLayout.empty()) {
+ M->setDataLayout(DefaultDataLayout);
+ }
// Add internal analysis passes from the target machine.
- if (TM.get())
- TM->addAnalysisPasses(Passes);
+ Passes.add(createTargetTransformInfoWrapperPass(TM ? TM->getTargetIRAnalysis()
+ : TargetIRAnalysis()));
- OwningPtr<FunctionPassManager> FPasses;
+ std::unique_ptr<legacy::FunctionPassManager> FPasses;
if (OptLevelO1 || OptLevelO2 || OptLevelOs || OptLevelOz || OptLevelO3) {
- FPasses.reset(new FunctionPassManager(M.get()));
- if (TD)
- FPasses->add(new DataLayout(*TD));
- if (TM.get())
- TM->addAnalysisPasses(*FPasses);
-
+ FPasses.reset(new legacy::FunctionPassManager(M.get()));
+ FPasses->add(createTargetTransformInfoWrapperPass(
+ TM ? TM->getTargetIRAnalysis() : TargetIRAnalysis()));
}
if (PrintBreakpoints) {
if (OutputFilename.empty())
OutputFilename = "-";
- std::string ErrorInfo;
- Out.reset(new tool_output_file(OutputFilename.c_str(), ErrorInfo,
- sys::fs::F_Binary));
- if (!ErrorInfo.empty()) {
- errs() << ErrorInfo << '\n';
+ std::error_code EC;
+ Out = llvm::make_unique<tool_output_file>(OutputFilename, EC,
+ sys::fs::F_None);
+ if (EC) {
+ errs() << EC.message() << '\n';
return 1;
}
}
- Passes.add(new BreakpointPrinter(Out->os()));
+ Passes.add(createBreakpointPrinter(Out->os()));
NoOutput = true;
}
- // If the -strip-debug command line option was specified, add it. If
- // -std-compile-opts was also specified, it will handle StripDebug.
- if (StripDebug && !StandardCompileOpts)
- addPass(Passes, createStripSymbolsPass(true));
-
// Create a new optimization pass for each one specified on the command line
for (unsigned i = 0; i < PassList.size(); ++i) {
- // Check to see if -std-compile-opts was specified before this option. If
- // so, handle it.
- if (StandardCompileOpts &&
- StandardCompileOpts.getPosition() < PassList.getPosition(i)) {
- AddStandardCompilePasses(Passes);
- StandardCompileOpts = false;
- }
-
if (StandardLinkOpts &&
StandardLinkOpts.getPosition() < PassList.getPosition(i)) {
AddStandardLinkPasses(Passes);
}
const PassInfo *PassInf = PassList[i];
- Pass *P = 0;
+ Pass *P = nullptr;
if (PassInf->getTargetMachineCtor())
P = PassInf->getTargetMachineCtor()(TM.get());
else if (PassInf->getNormalCtor())
}
if (PrintEachXForm)
- Passes.add(createPrintModulePass(errs()));
- }
-
- // If -std-compile-opts was specified at the end of the pass list, add them.
- if (StandardCompileOpts) {
- AddStandardCompilePasses(Passes);
- StandardCompileOpts = false;
+ Passes.add(
+ createPrintModulePass(errs(), "", PreserveAssemblyUseListOrder));
}
if (StandardLinkOpts) {
if (OptLevelO1 || OptLevelO2 || OptLevelOs || OptLevelOz || OptLevelO3) {
FPasses->doInitialization();
- for (Module::iterator F = M->begin(), E = M->end(); F != E; ++F)
- FPasses->run(*F);
+ for (Function &F : *M)
+ FPasses->run(F);
FPasses->doFinalization();
}
if (!NoVerify && !VerifyEach)
Passes.add(createVerifierPass());
+ // 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> CompileTwiceBuffer;
+ 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 = make_unique<raw_svector_ostream>(Buffer);
+ OS = BOS.get();
+ }
if (OutputAssembly)
- Passes.add(createPrintModulePass(Out->os()));
+ Passes.add(createPrintModulePass(*OS, "", PreserveAssemblyUseListOrder));
else
- Passes.add(createBitcodeWriterPass(Out->os()));
+ Passes.add(createBitcodeWriterPass(*OS, PreserveBitcodeUseListOrder));
}
// Before executing passes, print the final values of the LLVM options.
cl::PrintOptionValues();
+ // If requested, run all passes again with the same pass manager to catch
+ // bugs caused by persistent state in the passes
+ if (RunTwice) {
+ std::unique_ptr<Module> M2(CloneModule(M.get()));
+ Passes.run(*M2);
+ CompileTwiceBuffer = Buffer;
+ Buffer.clear();
+ }
+
// Now that we have all of the passes ready, run them.
- Passes.run(*M.get());
+ Passes.run(*M);
+
+ // Compare the two outputs and make sure they're the same
+ if (RunTwice) {
+ assert(Out);
+ if (Buffer.size() != CompileTwiceBuffer.size() ||
+ (memcmp(Buffer.data(), CompileTwiceBuffer.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();
+ return 1;
+ }
+ Out->os() << BOS->str();
+ }
// Declare success.
if (!NoOutput || PrintBreakpoints)
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