mirror of
https://github.com/capstone-engine/llvm-capstone.git
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691 lines
22 KiB
C++
691 lines
22 KiB
C++
//===-LTOCodeGenerator.cpp - LLVM Link Time Optimizer ---------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the Link Time Optimization library. This library is
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// intended to be used by linker to optimize code at link time.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/LTO/legacy/LTOCodeGenerator.h"
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#include "llvm/ADT/Statistic.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Analysis/Passes.h"
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#include "llvm/Analysis/TargetLibraryInfo.h"
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#include "llvm/Analysis/TargetTransformInfo.h"
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#include "llvm/Bitcode/BitcodeWriter.h"
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#include "llvm/CodeGen/ParallelCG.h"
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#include "llvm/CodeGen/TargetSubtargetInfo.h"
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#include "llvm/Config/config.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/DebugInfo.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/DiagnosticInfo.h"
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#include "llvm/IR/DiagnosticPrinter.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/LLVMRemarkStreamer.h"
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#include "llvm/IR/LegacyPassManager.h"
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#include "llvm/IR/Mangler.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/PassTimingInfo.h"
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#include "llvm/IR/Verifier.h"
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#include "llvm/InitializePasses.h"
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#include "llvm/LTO/LTO.h"
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#include "llvm/LTO/LTOBackend.h"
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#include "llvm/LTO/legacy/LTOModule.h"
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#include "llvm/LTO/legacy/UpdateCompilerUsed.h"
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#include "llvm/Linker/Linker.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/SubtargetFeature.h"
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#include "llvm/MC/TargetRegistry.h"
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#include "llvm/Remarks/HotnessThresholdParser.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Host.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/TargetSelect.h"
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#include "llvm/Support/ToolOutputFile.h"
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#include "llvm/Support/YAMLTraits.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Target/TargetOptions.h"
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#include "llvm/Transforms/IPO.h"
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#include "llvm/Transforms/IPO/Internalize.h"
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#include "llvm/Transforms/IPO/PassManagerBuilder.h"
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#include "llvm/Transforms/IPO/WholeProgramDevirt.h"
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#include "llvm/Transforms/ObjCARC.h"
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#include "llvm/Transforms/Utils/ModuleUtils.h"
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#include <system_error>
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using namespace llvm;
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const char* LTOCodeGenerator::getVersionString() {
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#ifdef LLVM_VERSION_INFO
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return PACKAGE_NAME " version " PACKAGE_VERSION ", " LLVM_VERSION_INFO;
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#else
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return PACKAGE_NAME " version " PACKAGE_VERSION;
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#endif
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}
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namespace llvm {
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cl::opt<bool> LTODiscardValueNames(
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"lto-discard-value-names",
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cl::desc("Strip names from Value during LTO (other than GlobalValue)."),
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#ifdef NDEBUG
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cl::init(true),
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#else
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cl::init(false),
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#endif
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cl::Hidden);
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cl::opt<bool> RemarksWithHotness(
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"lto-pass-remarks-with-hotness",
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cl::desc("With PGO, include profile count in optimization remarks"),
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cl::Hidden);
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cl::opt<Optional<uint64_t>, false, remarks::HotnessThresholdParser>
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RemarksHotnessThreshold(
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"lto-pass-remarks-hotness-threshold",
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cl::desc("Minimum profile count required for an "
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"optimization remark to be output."
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" Use 'auto' to apply the threshold from profile summary."),
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cl::value_desc("uint or 'auto'"), cl::init(0), cl::Hidden);
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cl::opt<std::string>
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RemarksFilename("lto-pass-remarks-output",
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cl::desc("Output filename for pass remarks"),
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cl::value_desc("filename"));
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cl::opt<std::string>
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RemarksPasses("lto-pass-remarks-filter",
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cl::desc("Only record optimization remarks from passes whose "
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"names match the given regular expression"),
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cl::value_desc("regex"));
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cl::opt<std::string> RemarksFormat(
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"lto-pass-remarks-format",
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cl::desc("The format used for serializing remarks (default: YAML)"),
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cl::value_desc("format"), cl::init("yaml"));
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cl::opt<std::string> LTOStatsFile(
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"lto-stats-file",
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cl::desc("Save statistics to the specified file"),
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cl::Hidden);
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}
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LTOCodeGenerator::LTOCodeGenerator(LLVMContext &Context)
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: Context(Context), MergedModule(new Module("ld-temp.o", Context)),
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TheLinker(new Linker(*MergedModule)) {
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Context.setDiscardValueNames(LTODiscardValueNames);
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Context.enableDebugTypeODRUniquing();
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Config.CodeModel = None;
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Config.StatsFile = LTOStatsFile;
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Config.PreCodeGenPassesHook = [](legacy::PassManager &PM) {
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PM.add(createObjCARCContractPass());
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};
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}
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LTOCodeGenerator::~LTOCodeGenerator() = default;
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void LTOCodeGenerator::setAsmUndefinedRefs(LTOModule *Mod) {
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for (const StringRef &Undef : Mod->getAsmUndefinedRefs())
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AsmUndefinedRefs.insert(Undef);
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}
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bool LTOCodeGenerator::addModule(LTOModule *Mod) {
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assert(&Mod->getModule().getContext() == &Context &&
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"Expected module in same context");
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bool ret = TheLinker->linkInModule(Mod->takeModule());
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setAsmUndefinedRefs(Mod);
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// We've just changed the input, so let's make sure we verify it.
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HasVerifiedInput = false;
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return !ret;
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}
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void LTOCodeGenerator::setModule(std::unique_ptr<LTOModule> Mod) {
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assert(&Mod->getModule().getContext() == &Context &&
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"Expected module in same context");
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AsmUndefinedRefs.clear();
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MergedModule = Mod->takeModule();
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TheLinker = std::make_unique<Linker>(*MergedModule);
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setAsmUndefinedRefs(&*Mod);
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// We've just changed the input, so let's make sure we verify it.
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HasVerifiedInput = false;
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}
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void LTOCodeGenerator::setTargetOptions(const TargetOptions &Options) {
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Config.Options = Options;
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}
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void LTOCodeGenerator::setDebugInfo(lto_debug_model Debug) {
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switch (Debug) {
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case LTO_DEBUG_MODEL_NONE:
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EmitDwarfDebugInfo = false;
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return;
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case LTO_DEBUG_MODEL_DWARF:
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EmitDwarfDebugInfo = true;
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return;
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}
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llvm_unreachable("Unknown debug format!");
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}
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void LTOCodeGenerator::setOptLevel(unsigned Level) {
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Config.OptLevel = Level;
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Config.PTO.LoopVectorization = Config.OptLevel > 1;
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Config.PTO.SLPVectorization = Config.OptLevel > 1;
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switch (Config.OptLevel) {
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case 0:
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Config.CGOptLevel = CodeGenOpt::None;
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return;
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case 1:
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Config.CGOptLevel = CodeGenOpt::Less;
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return;
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case 2:
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Config.CGOptLevel = CodeGenOpt::Default;
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return;
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case 3:
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Config.CGOptLevel = CodeGenOpt::Aggressive;
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return;
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}
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llvm_unreachable("Unknown optimization level!");
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}
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bool LTOCodeGenerator::writeMergedModules(StringRef Path) {
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if (!determineTarget())
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return false;
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// We always run the verifier once on the merged module.
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verifyMergedModuleOnce();
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// mark which symbols can not be internalized
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applyScopeRestrictions();
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// create output file
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std::error_code EC;
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ToolOutputFile Out(Path, EC, sys::fs::OF_None);
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if (EC) {
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std::string ErrMsg = "could not open bitcode file for writing: ";
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ErrMsg += Path.str() + ": " + EC.message();
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emitError(ErrMsg);
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return false;
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}
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// write bitcode to it
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WriteBitcodeToFile(*MergedModule, Out.os(), ShouldEmbedUselists);
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Out.os().close();
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if (Out.os().has_error()) {
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std::string ErrMsg = "could not write bitcode file: ";
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ErrMsg += Path.str() + ": " + Out.os().error().message();
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emitError(ErrMsg);
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Out.os().clear_error();
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return false;
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}
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Out.keep();
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return true;
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}
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bool LTOCodeGenerator::compileOptimizedToFile(const char **Name) {
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// make unique temp output file to put generated code
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SmallString<128> Filename;
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auto AddStream = [&](size_t Task) -> std::unique_ptr<CachedFileStream> {
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StringRef Extension(Config.CGFileType == CGFT_AssemblyFile ? "s" : "o");
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int FD;
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std::error_code EC =
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sys::fs::createTemporaryFile("lto-llvm", Extension, FD, Filename);
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if (EC)
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emitError(EC.message());
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return std::make_unique<CachedFileStream>(
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std::make_unique<llvm::raw_fd_ostream>(FD, true));
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};
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bool genResult = compileOptimized(AddStream, 1);
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if (!genResult) {
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sys::fs::remove(Twine(Filename));
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return false;
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}
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// If statistics were requested, save them to the specified file or
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// print them out after codegen.
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if (StatsFile)
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PrintStatisticsJSON(StatsFile->os());
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else if (AreStatisticsEnabled())
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PrintStatistics();
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NativeObjectPath = Filename.c_str();
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*Name = NativeObjectPath.c_str();
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return true;
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}
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std::unique_ptr<MemoryBuffer>
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LTOCodeGenerator::compileOptimized() {
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const char *name;
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if (!compileOptimizedToFile(&name))
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return nullptr;
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// read .o file into memory buffer
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ErrorOr<std::unique_ptr<MemoryBuffer>> BufferOrErr = MemoryBuffer::getFile(
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name, /*IsText=*/false, /*RequiresNullTerminator=*/false);
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if (std::error_code EC = BufferOrErr.getError()) {
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emitError(EC.message());
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sys::fs::remove(NativeObjectPath);
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return nullptr;
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}
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// remove temp files
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sys::fs::remove(NativeObjectPath);
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return std::move(*BufferOrErr);
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}
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bool LTOCodeGenerator::compile_to_file(const char **Name) {
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if (!optimize())
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return false;
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return compileOptimizedToFile(Name);
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}
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std::unique_ptr<MemoryBuffer> LTOCodeGenerator::compile() {
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if (!optimize())
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return nullptr;
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return compileOptimized();
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}
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bool LTOCodeGenerator::determineTarget() {
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if (TargetMach)
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return true;
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TripleStr = MergedModule->getTargetTriple();
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if (TripleStr.empty()) {
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TripleStr = sys::getDefaultTargetTriple();
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MergedModule->setTargetTriple(TripleStr);
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}
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llvm::Triple Triple(TripleStr);
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// create target machine from info for merged modules
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std::string ErrMsg;
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MArch = TargetRegistry::lookupTarget(TripleStr, ErrMsg);
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if (!MArch) {
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emitError(ErrMsg);
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return false;
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}
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// Construct LTOModule, hand over ownership of module and target. Use MAttr as
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// the default set of features.
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SubtargetFeatures Features(join(Config.MAttrs, ""));
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Features.getDefaultSubtargetFeatures(Triple);
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FeatureStr = Features.getString();
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// Set a default CPU for Darwin triples.
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if (Config.CPU.empty() && Triple.isOSDarwin()) {
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if (Triple.getArch() == llvm::Triple::x86_64)
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Config.CPU = "core2";
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else if (Triple.getArch() == llvm::Triple::x86)
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Config.CPU = "yonah";
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else if (Triple.isArm64e())
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Config.CPU = "apple-a12";
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else if (Triple.getArch() == llvm::Triple::aarch64 ||
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Triple.getArch() == llvm::Triple::aarch64_32)
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Config.CPU = "cyclone";
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}
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TargetMach = createTargetMachine();
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assert(TargetMach && "Unable to create target machine");
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return true;
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}
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std::unique_ptr<TargetMachine> LTOCodeGenerator::createTargetMachine() {
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assert(MArch && "MArch is not set!");
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return std::unique_ptr<TargetMachine>(MArch->createTargetMachine(
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TripleStr, Config.CPU, FeatureStr, Config.Options, Config.RelocModel,
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None, Config.CGOptLevel));
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}
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// If a linkonce global is present in the MustPreserveSymbols, we need to make
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// sure we honor this. To force the compiler to not drop it, we add it to the
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// "llvm.compiler.used" global.
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void LTOCodeGenerator::preserveDiscardableGVs(
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Module &TheModule,
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llvm::function_ref<bool(const GlobalValue &)> mustPreserveGV) {
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std::vector<GlobalValue *> Used;
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auto mayPreserveGlobal = [&](GlobalValue &GV) {
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if (!GV.isDiscardableIfUnused() || GV.isDeclaration() ||
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!mustPreserveGV(GV))
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return;
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if (GV.hasAvailableExternallyLinkage())
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return emitWarning(
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(Twine("Linker asked to preserve available_externally global: '") +
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GV.getName() + "'").str());
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if (GV.hasInternalLinkage())
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return emitWarning((Twine("Linker asked to preserve internal global: '") +
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GV.getName() + "'").str());
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Used.push_back(&GV);
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};
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for (auto &GV : TheModule)
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mayPreserveGlobal(GV);
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for (auto &GV : TheModule.globals())
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mayPreserveGlobal(GV);
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for (auto &GV : TheModule.aliases())
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mayPreserveGlobal(GV);
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if (Used.empty())
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return;
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appendToCompilerUsed(TheModule, Used);
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}
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void LTOCodeGenerator::applyScopeRestrictions() {
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if (ScopeRestrictionsDone)
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return;
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// Declare a callback for the internalize pass that will ask for every
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// candidate GlobalValue if it can be internalized or not.
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Mangler Mang;
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SmallString<64> MangledName;
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auto mustPreserveGV = [&](const GlobalValue &GV) -> bool {
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// Unnamed globals can't be mangled, but they can't be preserved either.
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if (!GV.hasName())
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return false;
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// Need to mangle the GV as the "MustPreserveSymbols" StringSet is filled
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// with the linker supplied name, which on Darwin includes a leading
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// underscore.
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MangledName.clear();
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MangledName.reserve(GV.getName().size() + 1);
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Mang.getNameWithPrefix(MangledName, &GV, /*CannotUsePrivateLabel=*/false);
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return MustPreserveSymbols.count(MangledName);
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};
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// Preserve linkonce value on linker request
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preserveDiscardableGVs(*MergedModule, mustPreserveGV);
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if (!ShouldInternalize)
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return;
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if (ShouldRestoreGlobalsLinkage) {
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// Record the linkage type of non-local symbols so they can be restored
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// prior
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// to module splitting.
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auto RecordLinkage = [&](const GlobalValue &GV) {
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if (!GV.hasAvailableExternallyLinkage() && !GV.hasLocalLinkage() &&
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GV.hasName())
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ExternalSymbols.insert(std::make_pair(GV.getName(), GV.getLinkage()));
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};
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for (auto &GV : *MergedModule)
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RecordLinkage(GV);
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for (auto &GV : MergedModule->globals())
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RecordLinkage(GV);
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for (auto &GV : MergedModule->aliases())
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RecordLinkage(GV);
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}
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// Update the llvm.compiler_used globals to force preserving libcalls and
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// symbols referenced from asm
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updateCompilerUsed(*MergedModule, *TargetMach, AsmUndefinedRefs);
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internalizeModule(*MergedModule, mustPreserveGV);
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ScopeRestrictionsDone = true;
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}
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/// Restore original linkage for symbols that may have been internalized
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void LTOCodeGenerator::restoreLinkageForExternals() {
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if (!ShouldInternalize || !ShouldRestoreGlobalsLinkage)
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return;
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assert(ScopeRestrictionsDone &&
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"Cannot externalize without internalization!");
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if (ExternalSymbols.empty())
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return;
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auto externalize = [this](GlobalValue &GV) {
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if (!GV.hasLocalLinkage() || !GV.hasName())
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return;
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auto I = ExternalSymbols.find(GV.getName());
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if (I == ExternalSymbols.end())
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return;
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GV.setLinkage(I->second);
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};
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llvm::for_each(MergedModule->functions(), externalize);
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llvm::for_each(MergedModule->globals(), externalize);
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llvm::for_each(MergedModule->aliases(), externalize);
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}
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void LTOCodeGenerator::verifyMergedModuleOnce() {
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// Only run on the first call.
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if (HasVerifiedInput)
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return;
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HasVerifiedInput = true;
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bool BrokenDebugInfo = false;
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if (verifyModule(*MergedModule, &dbgs(), &BrokenDebugInfo))
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report_fatal_error("Broken module found, compilation aborted!");
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if (BrokenDebugInfo) {
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emitWarning("Invalid debug info found, debug info will be stripped");
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StripDebugInfo(*MergedModule);
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}
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}
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void LTOCodeGenerator::finishOptimizationRemarks() {
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if (DiagnosticOutputFile) {
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DiagnosticOutputFile->keep();
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// FIXME: LTOCodeGenerator dtor is not invoked on Darwin
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DiagnosticOutputFile->os().flush();
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}
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}
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/// Optimize merged modules using various IPO passes
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bool LTOCodeGenerator::optimize() {
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if (!this->determineTarget())
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return false;
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|
auto DiagFileOrErr = lto::setupLLVMOptimizationRemarks(
|
|
Context, RemarksFilename, RemarksPasses, RemarksFormat,
|
|
RemarksWithHotness, RemarksHotnessThreshold);
|
|
if (!DiagFileOrErr) {
|
|
errs() << "Error: " << toString(DiagFileOrErr.takeError()) << "\n";
|
|
report_fatal_error("Can't get an output file for the remarks");
|
|
}
|
|
DiagnosticOutputFile = std::move(*DiagFileOrErr);
|
|
|
|
// Setup output file to emit statistics.
|
|
auto StatsFileOrErr = lto::setupStatsFile(LTOStatsFile);
|
|
if (!StatsFileOrErr) {
|
|
errs() << "Error: " << toString(StatsFileOrErr.takeError()) << "\n";
|
|
report_fatal_error("Can't get an output file for the statistics");
|
|
}
|
|
StatsFile = std::move(StatsFileOrErr.get());
|
|
|
|
// Currently there is no support for enabling whole program visibility via a
|
|
// linker option in the old LTO API, but this call allows it to be specified
|
|
// via the internal option. Must be done before WPD invoked via the optimizer
|
|
// pipeline run below.
|
|
updateVCallVisibilityInModule(*MergedModule,
|
|
/* WholeProgramVisibilityEnabledInLTO */ false,
|
|
// FIXME: This needs linker information via a
|
|
// TBD new interface.
|
|
/* DynamicExportSymbols */ {});
|
|
|
|
// We always run the verifier once on the merged module, the `DisableVerify`
|
|
// parameter only applies to subsequent verify.
|
|
verifyMergedModuleOnce();
|
|
|
|
// Mark which symbols can not be internalized
|
|
this->applyScopeRestrictions();
|
|
|
|
// Write LTOPostLink flag for passes that require all the modules.
|
|
MergedModule->addModuleFlag(Module::Error, "LTOPostLink", 1);
|
|
|
|
// Add an appropriate DataLayout instance for this module...
|
|
MergedModule->setDataLayout(TargetMach->createDataLayout());
|
|
|
|
ModuleSummaryIndex CombinedIndex(false);
|
|
TargetMach = createTargetMachine();
|
|
if (!opt(Config, TargetMach.get(), 0, *MergedModule, /*IsThinLTO=*/false,
|
|
/*ExportSummary=*/&CombinedIndex, /*ImportSummary=*/nullptr,
|
|
/*CmdArgs*/ std::vector<uint8_t>())) {
|
|
emitError("LTO middle-end optimizations failed");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool LTOCodeGenerator::compileOptimized(AddStreamFn AddStream,
|
|
unsigned ParallelismLevel) {
|
|
if (!this->determineTarget())
|
|
return false;
|
|
|
|
// We always run the verifier once on the merged module. If it has already
|
|
// been called in optimize(), this call will return early.
|
|
verifyMergedModuleOnce();
|
|
|
|
// Re-externalize globals that may have been internalized to increase scope
|
|
// for splitting
|
|
restoreLinkageForExternals();
|
|
|
|
ModuleSummaryIndex CombinedIndex(false);
|
|
|
|
Config.CodeGenOnly = true;
|
|
Error Err = backend(Config, AddStream, ParallelismLevel, *MergedModule,
|
|
CombinedIndex);
|
|
assert(!Err && "unexpected code-generation failure");
|
|
(void)Err;
|
|
|
|
// If statistics were requested, save them to the specified file or
|
|
// print them out after codegen.
|
|
if (StatsFile)
|
|
PrintStatisticsJSON(StatsFile->os());
|
|
else if (AreStatisticsEnabled())
|
|
PrintStatistics();
|
|
|
|
reportAndResetTimings();
|
|
|
|
finishOptimizationRemarks();
|
|
|
|
return true;
|
|
}
|
|
|
|
void LTOCodeGenerator::setCodeGenDebugOptions(ArrayRef<StringRef> Options) {
|
|
for (StringRef Option : Options)
|
|
CodegenOptions.push_back(Option.str());
|
|
}
|
|
|
|
void LTOCodeGenerator::parseCodeGenDebugOptions() {
|
|
if (!CodegenOptions.empty())
|
|
llvm::parseCommandLineOptions(CodegenOptions);
|
|
}
|
|
|
|
void llvm::parseCommandLineOptions(std::vector<std::string> &Options) {
|
|
if (!Options.empty()) {
|
|
// ParseCommandLineOptions() expects argv[0] to be program name.
|
|
std::vector<const char *> CodegenArgv(1, "libLLVMLTO");
|
|
for (std::string &Arg : Options)
|
|
CodegenArgv.push_back(Arg.c_str());
|
|
cl::ParseCommandLineOptions(CodegenArgv.size(), CodegenArgv.data());
|
|
}
|
|
}
|
|
|
|
void LTOCodeGenerator::DiagnosticHandler(const DiagnosticInfo &DI) {
|
|
// Map the LLVM internal diagnostic severity to the LTO diagnostic severity.
|
|
lto_codegen_diagnostic_severity_t Severity;
|
|
switch (DI.getSeverity()) {
|
|
case DS_Error:
|
|
Severity = LTO_DS_ERROR;
|
|
break;
|
|
case DS_Warning:
|
|
Severity = LTO_DS_WARNING;
|
|
break;
|
|
case DS_Remark:
|
|
Severity = LTO_DS_REMARK;
|
|
break;
|
|
case DS_Note:
|
|
Severity = LTO_DS_NOTE;
|
|
break;
|
|
}
|
|
// Create the string that will be reported to the external diagnostic handler.
|
|
std::string MsgStorage;
|
|
raw_string_ostream Stream(MsgStorage);
|
|
DiagnosticPrinterRawOStream DP(Stream);
|
|
DI.print(DP);
|
|
Stream.flush();
|
|
|
|
// If this method has been called it means someone has set up an external
|
|
// diagnostic handler. Assert on that.
|
|
assert(DiagHandler && "Invalid diagnostic handler");
|
|
(*DiagHandler)(Severity, MsgStorage.c_str(), DiagContext);
|
|
}
|
|
|
|
namespace {
|
|
struct LTODiagnosticHandler : public DiagnosticHandler {
|
|
LTOCodeGenerator *CodeGenerator;
|
|
LTODiagnosticHandler(LTOCodeGenerator *CodeGenPtr)
|
|
: CodeGenerator(CodeGenPtr) {}
|
|
bool handleDiagnostics(const DiagnosticInfo &DI) override {
|
|
CodeGenerator->DiagnosticHandler(DI);
|
|
return true;
|
|
}
|
|
};
|
|
}
|
|
|
|
void
|
|
LTOCodeGenerator::setDiagnosticHandler(lto_diagnostic_handler_t DiagHandler,
|
|
void *Ctxt) {
|
|
this->DiagHandler = DiagHandler;
|
|
this->DiagContext = Ctxt;
|
|
if (!DiagHandler)
|
|
return Context.setDiagnosticHandler(nullptr);
|
|
// Register the LTOCodeGenerator stub in the LLVMContext to forward the
|
|
// diagnostic to the external DiagHandler.
|
|
Context.setDiagnosticHandler(std::make_unique<LTODiagnosticHandler>(this),
|
|
true);
|
|
}
|
|
|
|
namespace {
|
|
class LTODiagnosticInfo : public DiagnosticInfo {
|
|
const Twine &Msg;
|
|
public:
|
|
LTODiagnosticInfo(const Twine &DiagMsg, DiagnosticSeverity Severity=DS_Error)
|
|
: DiagnosticInfo(DK_Linker, Severity), Msg(DiagMsg) {}
|
|
void print(DiagnosticPrinter &DP) const override { DP << Msg; }
|
|
};
|
|
}
|
|
|
|
void LTOCodeGenerator::emitError(const std::string &ErrMsg) {
|
|
if (DiagHandler)
|
|
(*DiagHandler)(LTO_DS_ERROR, ErrMsg.c_str(), DiagContext);
|
|
else
|
|
Context.diagnose(LTODiagnosticInfo(ErrMsg));
|
|
}
|
|
|
|
void LTOCodeGenerator::emitWarning(const std::string &ErrMsg) {
|
|
if (DiagHandler)
|
|
(*DiagHandler)(LTO_DS_WARNING, ErrMsg.c_str(), DiagContext);
|
|
else
|
|
Context.diagnose(LTODiagnosticInfo(ErrMsg, DS_Warning));
|
|
}
|