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-rw-r--r--lib/CodeGen/BackendUtil.cpp256
1 files changed, 199 insertions, 57 deletions
diff --git a/lib/CodeGen/BackendUtil.cpp b/lib/CodeGen/BackendUtil.cpp
index b927acabac..cd2a5f6fa3 100644
--- a/lib/CodeGen/BackendUtil.cpp
+++ b/lib/CodeGen/BackendUtil.cpp
@@ -1,9 +1,8 @@
//===--- BackendUtil.cpp - LLVM Backend Utilities -------------------------===//
//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// 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
//
//===----------------------------------------------------------------------===//
@@ -37,11 +36,13 @@
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/SubtargetFeature.h"
#include "llvm/Passes/PassBuilder.h"
+#include "llvm/Passes/PassPlugin.h"
#include "llvm/Support/BuryPointer.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/TimeProfiler.h"
#include "llvm/Support/Timer.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
@@ -53,8 +54,10 @@
#include "llvm/Transforms/IPO/ThinLTOBitcodeWriter.h"
#include "llvm/Transforms/InstCombine/InstCombine.h"
#include "llvm/Transforms/Instrumentation.h"
+#include "llvm/Transforms/Instrumentation/AddressSanitizer.h"
#include "llvm/Transforms/Instrumentation/BoundsChecking.h"
#include "llvm/Transforms/Instrumentation/GCOVProfiler.h"
+#include "llvm/Transforms/Instrumentation/InstrProfiling.h"
#include "llvm/Transforms/Instrumentation/MemorySanitizer.h"
#include "llvm/Transforms/Instrumentation/ThreadSanitizer.h"
#include "llvm/Transforms/ObjCARC.h"
@@ -243,15 +246,15 @@ static void addAddressSanitizerPasses(const PassManagerBuilder &Builder,
bool UseGlobalsGC = asanUseGlobalsGC(T, CGOpts);
PM.add(createAddressSanitizerFunctionPass(/*CompileKernel*/ false, Recover,
UseAfterScope));
- PM.add(createAddressSanitizerModulePass(/*CompileKernel*/ false, Recover,
- UseGlobalsGC, UseOdrIndicator));
+ PM.add(createModuleAddressSanitizerLegacyPassPass(
+ /*CompileKernel*/ false, Recover, UseGlobalsGC, UseOdrIndicator));
}
static void addKernelAddressSanitizerPasses(const PassManagerBuilder &Builder,
legacy::PassManagerBase &PM) {
PM.add(createAddressSanitizerFunctionPass(
/*CompileKernel*/ true, /*Recover*/ true, /*UseAfterScope*/ false));
- PM.add(createAddressSanitizerModulePass(
+ PM.add(createModuleAddressSanitizerLegacyPassPass(
/*CompileKernel*/ true, /*Recover*/ true, /*UseGlobalsGC*/ true,
/*UseOdrIndicator*/ false));
}
@@ -279,7 +282,8 @@ static void addGeneralOptsForMemorySanitizer(const PassManagerBuilder &Builder,
const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts();
int TrackOrigins = CGOpts.SanitizeMemoryTrackOrigins;
bool Recover = CGOpts.SanitizeRecover.has(SanitizerKind::Memory);
- PM.add(createMemorySanitizerLegacyPassPass(TrackOrigins, Recover, CompileKernel));
+ PM.add(createMemorySanitizerLegacyPassPass(
+ MemorySanitizerOptions{TrackOrigins, Recover, CompileKernel}));
// MemorySanitizer inserts complex instrumentation that mostly follows
// the logic of the original code, but operates on "shadow" values.
@@ -317,19 +321,6 @@ static void addDataFlowSanitizerPass(const PassManagerBuilder &Builder,
PM.add(createDataFlowSanitizerPass(LangOpts.SanitizerBlacklistFiles));
}
-static void addEfficiencySanitizerPass(const PassManagerBuilder &Builder,
- legacy::PassManagerBase &PM) {
- const PassManagerBuilderWrapper &BuilderWrapper =
- static_cast<const PassManagerBuilderWrapper&>(Builder);
- const LangOptions &LangOpts = BuilderWrapper.getLangOpts();
- EfficiencySanitizerOptions Opts;
- if (LangOpts.Sanitize.has(SanitizerKind::EfficiencyCacheFrag))
- Opts.ToolType = EfficiencySanitizerOptions::ESAN_CacheFrag;
- else if (LangOpts.Sanitize.has(SanitizerKind::EfficiencyWorkingSet))
- Opts.ToolType = EfficiencySanitizerOptions::ESAN_WorkingSet;
- PM.add(createEfficiencySanitizerPass(Opts));
-}
-
static TargetLibraryInfoImpl *createTLII(llvm::Triple &TargetTriple,
const CodeGenOptions &CodeGenOpts) {
TargetLibraryInfoImpl *TLII = new TargetLibraryInfoImpl(TargetTriple);
@@ -515,6 +506,21 @@ static Optional<GCOVOptions> getGCOVOptions(const CodeGenOptions &CodeGenOpts) {
return Options;
}
+static Optional<InstrProfOptions>
+getInstrProfOptions(const CodeGenOptions &CodeGenOpts,
+ const LangOptions &LangOpts) {
+ if (!CodeGenOpts.hasProfileClangInstr())
+ return None;
+ InstrProfOptions Options;
+ Options.NoRedZone = CodeGenOpts.DisableRedZone;
+ Options.InstrProfileOutput = CodeGenOpts.InstrProfileOutput;
+
+ // TODO: Surface the option to emit atomic profile counter increments at
+ // the driver level.
+ Options.Atomic = LangOpts.Sanitize.has(SanitizerKind::Thread);
+ return Options;
+}
+
void EmitAssemblyHelper::CreatePasses(legacy::PassManager &MPM,
legacy::FunctionPassManager &FPM) {
// Handle disabling of all LLVM passes, where we want to preserve the
@@ -554,6 +560,9 @@ void EmitAssemblyHelper::CreatePasses(legacy::PassManager &MPM,
PMBuilder.LoopVectorize = CodeGenOpts.VectorizeLoop;
PMBuilder.DisableUnrollLoops = !CodeGenOpts.UnrollLoops;
+ // Loop interleaving in the loop vectorizer has historically been set to be
+ // enabled when loop unrolling is enabled.
+ PMBuilder.LoopsInterleaved = CodeGenOpts.UnrollLoops;
PMBuilder.MergeFunctions = CodeGenOpts.MergeFunctions;
PMBuilder.PrepareForThinLTO = CodeGenOpts.PrepareForThinLTO;
PMBuilder.PrepareForLTO = CodeGenOpts.PrepareForLTO;
@@ -579,7 +588,7 @@ void EmitAssemblyHelper::CreatePasses(legacy::PassManager &MPM,
addObjCARCOptPass);
}
- if (LangOpts.CoroutinesTS)
+ if (LangOpts.Coroutines)
addCoroutinePassesToExtensionPoints(PMBuilder);
if (LangOpts.Sanitize.has(SanitizerKind::LocalBounds)) {
@@ -654,13 +663,6 @@ void EmitAssemblyHelper::CreatePasses(legacy::PassManager &MPM,
addDataFlowSanitizerPass);
}
- if (LangOpts.Sanitize.hasOneOf(SanitizerKind::Efficiency)) {
- PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast,
- addEfficiencySanitizerPass);
- PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
- addEfficiencySanitizerPass);
- }
-
// Set up the per-function pass manager.
FPM.add(new TargetLibraryInfoWrapperPass(*TLII));
if (CodeGenOpts.VerifyModule)
@@ -676,26 +678,35 @@ void EmitAssemblyHelper::CreatePasses(legacy::PassManager &MPM,
MPM.add(createStripSymbolsPass(true));
}
- if (CodeGenOpts.hasProfileClangInstr()) {
- InstrProfOptions Options;
- Options.NoRedZone = CodeGenOpts.DisableRedZone;
- Options.InstrProfileOutput = CodeGenOpts.InstrProfileOutput;
+ if (Optional<InstrProfOptions> Options =
+ getInstrProfOptions(CodeGenOpts, LangOpts))
+ MPM.add(createInstrProfilingLegacyPass(*Options, false));
- // TODO: Surface the option to emit atomic profile counter increments at
- // the driver level.
- Options.Atomic = LangOpts.Sanitize.has(SanitizerKind::Thread);
-
- MPM.add(createInstrProfilingLegacyPass(Options));
- }
+ bool hasIRInstr = false;
if (CodeGenOpts.hasProfileIRInstr()) {
PMBuilder.EnablePGOInstrGen = true;
+ hasIRInstr = true;
+ }
+ if (CodeGenOpts.hasProfileCSIRInstr()) {
+ assert(!CodeGenOpts.hasProfileCSIRUse() &&
+ "Cannot have both CSProfileUse pass and CSProfileGen pass at the "
+ "same time");
+ assert(!hasIRInstr &&
+ "Cannot have both ProfileGen pass and CSProfileGen pass at the "
+ "same time");
+ PMBuilder.EnablePGOCSInstrGen = true;
+ hasIRInstr = true;
+ }
+ if (hasIRInstr) {
if (!CodeGenOpts.InstrProfileOutput.empty())
PMBuilder.PGOInstrGen = CodeGenOpts.InstrProfileOutput;
else
PMBuilder.PGOInstrGen = DefaultProfileGenName;
}
- if (CodeGenOpts.hasProfileIRUse())
+ if (CodeGenOpts.hasProfileIRUse()) {
PMBuilder.PGOInstrUse = CodeGenOpts.ProfileInstrumentUsePath;
+ PMBuilder.EnablePGOCSInstrUse = CodeGenOpts.hasProfileCSIRUse();
+ }
if (!CodeGenOpts.SampleProfileFile.empty())
PMBuilder.PGOSampleUse = CodeGenOpts.SampleProfileFile;
@@ -916,6 +927,31 @@ static PassBuilder::OptimizationLevel mapToLevel(const CodeGenOptions &Opts) {
}
}
+static void addSanitizersAtO0(ModulePassManager &MPM,
+ const Triple &TargetTriple,
+ const LangOptions &LangOpts,
+ const CodeGenOptions &CodeGenOpts) {
+ if (LangOpts.Sanitize.has(SanitizerKind::Address)) {
+ MPM.addPass(RequireAnalysisPass<ASanGlobalsMetadataAnalysis, Module>());
+ bool Recover = CodeGenOpts.SanitizeRecover.has(SanitizerKind::Address);
+ MPM.addPass(createModuleToFunctionPassAdaptor(
+ AddressSanitizerPass(/*CompileKernel=*/false, Recover,
+ CodeGenOpts.SanitizeAddressUseAfterScope)));
+ bool ModuleUseAfterScope = asanUseGlobalsGC(TargetTriple, CodeGenOpts);
+ MPM.addPass(ModuleAddressSanitizerPass(
+ /*CompileKernel=*/false, Recover, ModuleUseAfterScope,
+ CodeGenOpts.SanitizeAddressUseOdrIndicator));
+ }
+
+ if (LangOpts.Sanitize.has(SanitizerKind::Memory)) {
+ MPM.addPass(createModuleToFunctionPassAdaptor(MemorySanitizerPass({})));
+ }
+
+ if (LangOpts.Sanitize.has(SanitizerKind::Thread)) {
+ MPM.addPass(createModuleToFunctionPassAdaptor(ThreadSanitizerPass()));
+ }
+}
+
/// A clean version of `EmitAssembly` that uses the new pass manager.
///
/// Not all features are currently supported in this system, but where
@@ -929,13 +965,15 @@ void EmitAssemblyHelper::EmitAssemblyWithNewPassManager(
TimeRegion Region(FrontendTimesIsEnabled ? &CodeGenerationTime : nullptr);
setCommandLineOpts(CodeGenOpts);
- // The new pass manager always makes a target machine available to passes
- // during construction.
- CreateTargetMachine(/*MustCreateTM*/ true);
- if (!TM)
- // This will already be diagnosed, just bail.
+ bool RequiresCodeGen = (Action != Backend_EmitNothing &&
+ Action != Backend_EmitBC &&
+ Action != Backend_EmitLL);
+ CreateTargetMachine(RequiresCodeGen);
+
+ if (RequiresCodeGen && !TM)
return;
- TheModule->setDataLayout(TM->createDataLayout());
+ if (TM)
+ TheModule->setDataLayout(TM->createDataLayout());
Optional<PGOOptions> PGOOpt;
@@ -944,23 +982,61 @@ void EmitAssemblyHelper::EmitAssemblyWithNewPassManager(
PGOOpt = PGOOptions(CodeGenOpts.InstrProfileOutput.empty()
? DefaultProfileGenName
: CodeGenOpts.InstrProfileOutput,
- "", "", "", true,
+ "", "", PGOOptions::IRInstr, PGOOptions::NoCSAction,
CodeGenOpts.DebugInfoForProfiling);
- else if (CodeGenOpts.hasProfileIRUse())
+ else if (CodeGenOpts.hasProfileIRUse()) {
// -fprofile-use.
- PGOOpt = PGOOptions("", CodeGenOpts.ProfileInstrumentUsePath, "",
- CodeGenOpts.ProfileRemappingFile, false,
- CodeGenOpts.DebugInfoForProfiling);
- else if (!CodeGenOpts.SampleProfileFile.empty())
+ auto CSAction = CodeGenOpts.hasProfileCSIRUse() ? PGOOptions::CSIRUse
+ : PGOOptions::NoCSAction;
+ PGOOpt = PGOOptions(CodeGenOpts.ProfileInstrumentUsePath, "",
+ CodeGenOpts.ProfileRemappingFile, PGOOptions::IRUse,
+ CSAction, CodeGenOpts.DebugInfoForProfiling);
+ } else if (!CodeGenOpts.SampleProfileFile.empty())
// -fprofile-sample-use
- PGOOpt = PGOOptions("", "", CodeGenOpts.SampleProfileFile,
- CodeGenOpts.ProfileRemappingFile, false,
- CodeGenOpts.DebugInfoForProfiling);
+ PGOOpt =
+ PGOOptions(CodeGenOpts.SampleProfileFile, "",
+ CodeGenOpts.ProfileRemappingFile, PGOOptions::SampleUse,
+ PGOOptions::NoCSAction, CodeGenOpts.DebugInfoForProfiling);
else if (CodeGenOpts.DebugInfoForProfiling)
// -fdebug-info-for-profiling
- PGOOpt = PGOOptions("", "", "", "", false, true);
+ PGOOpt = PGOOptions("", "", "", PGOOptions::NoAction,
+ PGOOptions::NoCSAction, true);
+
+ // Check to see if we want to generate a CS profile.
+ if (CodeGenOpts.hasProfileCSIRInstr()) {
+ assert(!CodeGenOpts.hasProfileCSIRUse() &&
+ "Cannot have both CSProfileUse pass and CSProfileGen pass at "
+ "the same time");
+ if (PGOOpt.hasValue()) {
+ assert(PGOOpt->Action != PGOOptions::IRInstr &&
+ PGOOpt->Action != PGOOptions::SampleUse &&
+ "Cannot run CSProfileGen pass with ProfileGen or SampleUse "
+ " pass");
+ PGOOpt->CSProfileGenFile = CodeGenOpts.InstrProfileOutput.empty()
+ ? DefaultProfileGenName
+ : CodeGenOpts.InstrProfileOutput;
+ PGOOpt->CSAction = PGOOptions::CSIRInstr;
+ } else
+ PGOOpt = PGOOptions("",
+ CodeGenOpts.InstrProfileOutput.empty()
+ ? DefaultProfileGenName
+ : CodeGenOpts.InstrProfileOutput,
+ "", PGOOptions::NoAction, PGOOptions::CSIRInstr,
+ CodeGenOpts.DebugInfoForProfiling);
+ }
- PassBuilder PB(TM.get(), PGOOpt);
+ PassBuilder PB(TM.get(), PipelineTuningOptions(), PGOOpt);
+
+ // Attempt to load pass plugins and register their callbacks with PB.
+ for (auto &PluginFN : CodeGenOpts.PassPlugins) {
+ auto PassPlugin = PassPlugin::Load(PluginFN);
+ if (PassPlugin) {
+ PassPlugin->registerPassBuilderCallbacks(PB);
+ } else {
+ Diags.Report(diag::err_fe_unable_to_load_plugin)
+ << PluginFN << toString(PassPlugin.takeError());
+ }
+ }
LoopAnalysisManager LAM(CodeGenOpts.DebugPassManager);
FunctionAnalysisManager FAM(CodeGenOpts.DebugPassManager);
@@ -994,6 +1070,9 @@ void EmitAssemblyHelper::EmitAssemblyWithNewPassManager(
if (CodeGenOpts.OptimizationLevel == 0) {
if (Optional<GCOVOptions> Options = getGCOVOptions(CodeGenOpts))
MPM.addPass(GCOVProfilerPass(*Options));
+ if (Optional<InstrProfOptions> Options =
+ getInstrProfOptions(CodeGenOpts, LangOpts))
+ MPM.addPass(InstrProfiling(*Options, false));
// Build a minimal pipeline based on the semantics required by Clang,
// which is just that always inlining occurs.
@@ -1015,15 +1094,54 @@ void EmitAssemblyHelper::EmitAssemblyWithNewPassManager(
// Register callbacks to schedule sanitizer passes at the appropriate part of
// the pipeline.
+ // FIXME: either handle asan/the remaining sanitizers or error out
if (LangOpts.Sanitize.has(SanitizerKind::LocalBounds))
PB.registerScalarOptimizerLateEPCallback(
[](FunctionPassManager &FPM, PassBuilder::OptimizationLevel Level) {
FPM.addPass(BoundsCheckingPass());
});
+ if (LangOpts.Sanitize.has(SanitizerKind::Memory))
+ PB.registerOptimizerLastEPCallback(
+ [](FunctionPassManager &FPM, PassBuilder::OptimizationLevel Level) {
+ FPM.addPass(MemorySanitizerPass({}));
+ });
+ if (LangOpts.Sanitize.has(SanitizerKind::Thread))
+ PB.registerOptimizerLastEPCallback(
+ [](FunctionPassManager &FPM, PassBuilder::OptimizationLevel Level) {
+ FPM.addPass(ThreadSanitizerPass());
+ });
+ if (LangOpts.Sanitize.has(SanitizerKind::Address)) {
+ PB.registerPipelineStartEPCallback([&](ModulePassManager &MPM) {
+ MPM.addPass(
+ RequireAnalysisPass<ASanGlobalsMetadataAnalysis, Module>());
+ });
+ bool Recover = CodeGenOpts.SanitizeRecover.has(SanitizerKind::Address);
+ bool UseAfterScope = CodeGenOpts.SanitizeAddressUseAfterScope;
+ PB.registerOptimizerLastEPCallback(
+ [Recover, UseAfterScope](FunctionPassManager &FPM,
+ PassBuilder::OptimizationLevel Level) {
+ FPM.addPass(AddressSanitizerPass(
+ /*CompileKernel=*/false, Recover, UseAfterScope));
+ });
+ bool ModuleUseAfterScope = asanUseGlobalsGC(TargetTriple, CodeGenOpts);
+ bool UseOdrIndicator = CodeGenOpts.SanitizeAddressUseOdrIndicator;
+ PB.registerPipelineStartEPCallback(
+ [Recover, ModuleUseAfterScope,
+ UseOdrIndicator](ModulePassManager &MPM) {
+ MPM.addPass(ModuleAddressSanitizerPass(
+ /*CompileKernel=*/false, Recover, ModuleUseAfterScope,
+ UseOdrIndicator));
+ });
+ }
if (Optional<GCOVOptions> Options = getGCOVOptions(CodeGenOpts))
PB.registerPipelineStartEPCallback([Options](ModulePassManager &MPM) {
MPM.addPass(GCOVProfilerPass(*Options));
});
+ if (Optional<InstrProfOptions> Options =
+ getInstrProfOptions(CodeGenOpts, LangOpts))
+ PB.registerPipelineStartEPCallback([Options](ModulePassManager &MPM) {
+ MPM.addPass(InstrProfiling(*Options, false));
+ });
if (IsThinLTO) {
MPM = PB.buildThinLTOPreLinkDefaultPipeline(
@@ -1040,6 +1158,9 @@ void EmitAssemblyHelper::EmitAssemblyWithNewPassManager(
CodeGenOpts.DebugPassManager);
}
}
+
+ if (CodeGenOpts.OptimizationLevel == 0)
+ addSanitizersAtO0(MPM, TargetTriple, LangOpts, CodeGenOpts);
}
// FIXME: We still use the legacy pass manager to do code generation. We
@@ -1226,13 +1347,25 @@ static void runThinLTOBackend(ModuleSummaryIndex *CombinedIndex, Module *M,
Conf.MAttrs = TOpts.Features;
Conf.RelocModel = CGOpts.RelocationModel;
Conf.CGOptLevel = getCGOptLevel(CGOpts);
+ Conf.OptLevel = CGOpts.OptimizationLevel;
initTargetOptions(Conf.Options, CGOpts, TOpts, LOpts, HeaderOpts);
Conf.SampleProfile = std::move(SampleProfile);
+
+ // Context sensitive profile.
+ if (CGOpts.hasProfileCSIRInstr()) {
+ Conf.RunCSIRInstr = true;
+ Conf.CSIRProfile = std::move(CGOpts.InstrProfileOutput);
+ } else if (CGOpts.hasProfileCSIRUse()) {
+ Conf.RunCSIRInstr = false;
+ Conf.CSIRProfile = std::move(CGOpts.ProfileInstrumentUsePath);
+ }
+
Conf.ProfileRemapping = std::move(ProfileRemapping);
Conf.UseNewPM = CGOpts.ExperimentalNewPassManager;
Conf.DebugPassManager = CGOpts.DebugPassManager;
Conf.RemarksWithHotness = CGOpts.DiagnosticsWithHotness;
Conf.RemarksFilename = CGOpts.OptRecordFile;
+ Conf.RemarksPasses = CGOpts.OptRecordPasses;
Conf.DwoPath = CGOpts.SplitDwarfFile;
switch (Action) {
case Backend_EmitNothing:
@@ -1273,6 +1406,9 @@ void clang::EmitBackendOutput(DiagnosticsEngine &Diags,
const llvm::DataLayout &TDesc, Module *M,
BackendAction Action,
std::unique_ptr<raw_pwrite_stream> OS) {
+
+ llvm::TimeTraceScope TimeScope("Backend", StringRef(""));
+
std::unique_ptr<llvm::Module> EmptyModule;
if (!CGOpts.ThinLTOIndexFile.empty()) {
// If we are performing a ThinLTO importing compile, load the function index
@@ -1339,6 +1475,9 @@ static const char* getSectionNameForBitcode(const Triple &T) {
case Triple::Wasm:
case Triple::UnknownObjectFormat:
return ".llvmbc";
+ case Triple::XCOFF:
+ llvm_unreachable("XCOFF is not yet implemented");
+ break;
}
llvm_unreachable("Unimplemented ObjectFormatType");
}
@@ -1352,6 +1491,9 @@ static const char* getSectionNameForCommandline(const Triple &T) {
case Triple::Wasm:
case Triple::UnknownObjectFormat:
return ".llvmcmd";
+ case Triple::XCOFF:
+ llvm_unreachable("XCOFF is not yet implemented");
+ break;
}
llvm_unreachable("Unimplemented ObjectFormatType");
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-06 03:09:01 +0000