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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294807 91177308-0d34-0410-b5e6-96231b3b80d8
696 lines
22 KiB
C++
696 lines
22 KiB
C++
//===-LTOCodeGenerator.cpp - LLVM Link Time Optimizer ---------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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/RuntimeLibcalls.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/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/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/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/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/TargetRegistry.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/TargetLowering.h"
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#include "llvm/Target/TargetOptions.h"
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#include "llvm/Target/TargetRegisterInfo.h"
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#include "llvm/Target/TargetSubtargetInfo.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/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> LTOStripInvalidDebugInfo(
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"lto-strip-invalid-debug-info",
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cl::desc("Strip invalid debug info metadata during LTO instead of aborting."),
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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<std::string>
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LTORemarksFilename("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<bool> LTOPassRemarksWithHotness(
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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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}
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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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initializeLTOPasses();
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}
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LTOCodeGenerator::~LTOCodeGenerator() {}
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// Initialize LTO passes. Please keep this function in sync with
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// PassManagerBuilder::populateLTOPassManager(), and make sure all LTO
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// passes are initialized.
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void LTOCodeGenerator::initializeLTOPasses() {
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PassRegistry &R = *PassRegistry::getPassRegistry();
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initializeInternalizeLegacyPassPass(R);
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initializeIPSCCPLegacyPassPass(R);
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initializeGlobalOptLegacyPassPass(R);
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initializeConstantMergeLegacyPassPass(R);
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initializeDAHPass(R);
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initializeInstructionCombiningPassPass(R);
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initializeSimpleInlinerPass(R);
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initializePruneEHPass(R);
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initializeGlobalDCELegacyPassPass(R);
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initializeArgPromotionPass(R);
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initializeJumpThreadingPass(R);
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initializeSROALegacyPassPass(R);
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initializePostOrderFunctionAttrsLegacyPassPass(R);
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initializeReversePostOrderFunctionAttrsLegacyPassPass(R);
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initializeGlobalsAAWrapperPassPass(R);
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initializeLegacyLICMPassPass(R);
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initializeMergedLoadStoreMotionLegacyPassPass(R);
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initializeGVNLegacyPassPass(R);
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initializeMemCpyOptLegacyPassPass(R);
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initializeDCELegacyPassPass(R);
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initializeCFGSimplifyPassPass(R);
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}
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void LTOCodeGenerator::setAsmUndefinedRefs(LTOModule *Mod) {
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const std::vector<StringRef> &undefs = Mod->getAsmUndefinedRefs();
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for (int i = 0, e = undefs.size(); i != e; ++i)
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AsmUndefinedRefs[undefs[i]] = 1;
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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 = 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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this->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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OptLevel = Level;
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switch (OptLevel) {
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case 0:
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CGOptLevel = CodeGenOpt::None;
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return;
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case 1:
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CGOptLevel = CodeGenOpt::Less;
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return;
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case 2:
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CGOptLevel = CodeGenOpt::Default;
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return;
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case 3:
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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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tool_output_file Out(Path, EC, sys::fs::F_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;
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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.get(), 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;
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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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int FD;
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StringRef Extension
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(FileType == TargetMachine::CGFT_AssemblyFile ? "s" : "o");
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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 false;
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}
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// generate object file
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tool_output_file objFile(Filename, FD);
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bool genResult = compileOptimized(&objFile.os());
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objFile.os().close();
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if (objFile.os().has_error()) {
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emitError((Twine("could not write object file: ") + Filename).str());
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objFile.os().clear_error();
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sys::fs::remove(Twine(Filename));
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return false;
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}
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objFile.keep();
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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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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 =
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MemoryBuffer::getFile(name, -1, 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, bool DisableVerify,
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bool DisableInline,
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bool DisableGVNLoadPRE,
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bool DisableVectorization) {
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if (!optimize(DisableVerify, DisableInline, DisableGVNLoadPRE,
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DisableVectorization))
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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>
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LTOCodeGenerator::compile(bool DisableVerify, bool DisableInline,
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bool DisableGVNLoadPRE, bool DisableVectorization) {
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if (!optimize(DisableVerify, DisableInline, DisableGVNLoadPRE,
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DisableVectorization))
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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(MAttr);
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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 (MCpu.empty() && Triple.isOSDarwin()) {
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if (Triple.getArch() == llvm::Triple::x86_64)
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MCpu = "core2";
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else if (Triple.getArch() == llvm::Triple::x86)
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MCpu = "yonah";
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else if (Triple.getArch() == llvm::Triple::aarch64)
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MCpu = "cyclone";
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}
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TargetMach = createTargetMachine();
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return true;
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}
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std::unique_ptr<TargetMachine> LTOCodeGenerator::createTargetMachine() {
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return std::unique_ptr<TargetMachine>(
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MArch->createTargetMachine(TripleStr, MCpu, FeatureStr, Options,
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RelocModel, CodeModel::Default, 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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std::for_each(MergedModule->begin(), MergedModule->end(), externalize);
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std::for_each(MergedModule->global_begin(), MergedModule->global_end(),
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externalize);
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std::for_each(MergedModule->alias_begin(), MergedModule->alias_end(),
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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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if (LTOStripInvalidDebugInfo) {
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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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if (verifyModule(*MergedModule, &dbgs()))
|
|
report_fatal_error("Broken module found, compilation aborted!");
|
|
}
|
|
|
|
void LTOCodeGenerator::finishOptimizationRemarks() {
|
|
if (DiagnosticOutputFile) {
|
|
DiagnosticOutputFile->keep();
|
|
// FIXME: LTOCodeGenerator dtor is not invoked on Darwin
|
|
DiagnosticOutputFile->os().flush();
|
|
}
|
|
}
|
|
|
|
/// Optimize merged modules using various IPO passes
|
|
bool LTOCodeGenerator::optimize(bool DisableVerify, bool DisableInline,
|
|
bool DisableGVNLoadPRE,
|
|
bool DisableVectorization) {
|
|
if (!this->determineTarget())
|
|
return false;
|
|
|
|
auto DiagFileOrErr = lto::setupOptimizationRemarks(
|
|
Context, LTORemarksFilename, LTOPassRemarksWithHotness);
|
|
if (!DiagFileOrErr) {
|
|
errs() << "Error: " << toString(DiagFileOrErr.takeError()) << "\n";
|
|
report_fatal_error("Can't get an output file for the remarks");
|
|
}
|
|
DiagnosticOutputFile = std::move(*DiagFileOrErr);
|
|
|
|
// 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();
|
|
|
|
// Instantiate the pass manager to organize the passes.
|
|
legacy::PassManager passes;
|
|
|
|
// Add an appropriate DataLayout instance for this module...
|
|
MergedModule->setDataLayout(TargetMach->createDataLayout());
|
|
|
|
passes.add(
|
|
createTargetTransformInfoWrapperPass(TargetMach->getTargetIRAnalysis()));
|
|
|
|
Triple TargetTriple(TargetMach->getTargetTriple());
|
|
PassManagerBuilder PMB;
|
|
PMB.DisableGVNLoadPRE = DisableGVNLoadPRE;
|
|
PMB.LoopVectorize = !DisableVectorization;
|
|
PMB.SLPVectorize = !DisableVectorization;
|
|
if (!DisableInline)
|
|
PMB.Inliner = createFunctionInliningPass();
|
|
PMB.LibraryInfo = new TargetLibraryInfoImpl(TargetTriple);
|
|
PMB.OptLevel = OptLevel;
|
|
PMB.VerifyInput = !DisableVerify;
|
|
PMB.VerifyOutput = !DisableVerify;
|
|
|
|
PMB.populateLTOPassManager(passes);
|
|
|
|
// Run our queue of passes all at once now, efficiently.
|
|
passes.run(*MergedModule);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool LTOCodeGenerator::compileOptimized(ArrayRef<raw_pwrite_stream *> Out) {
|
|
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();
|
|
|
|
legacy::PassManager preCodeGenPasses;
|
|
|
|
// If the bitcode files contain ARC code and were compiled with optimization,
|
|
// the ObjCARCContractPass must be run, so do it unconditionally here.
|
|
preCodeGenPasses.add(createObjCARCContractPass());
|
|
preCodeGenPasses.run(*MergedModule);
|
|
|
|
// Re-externalize globals that may have been internalized to increase scope
|
|
// for splitting
|
|
restoreLinkageForExternals();
|
|
|
|
// Do code generation. We need to preserve the module in case the client calls
|
|
// writeMergedModules() after compilation, but we only need to allow this at
|
|
// parallelism level 1. This is achieved by having splitCodeGen return the
|
|
// original module at parallelism level 1 which we then assign back to
|
|
// MergedModule.
|
|
MergedModule = splitCodeGen(std::move(MergedModule), Out, {},
|
|
[&]() { return createTargetMachine(); }, FileType,
|
|
ShouldRestoreGlobalsLinkage);
|
|
|
|
// If statistics were requested, print them out after codegen.
|
|
if (llvm::AreStatisticsEnabled())
|
|
llvm::PrintStatistics();
|
|
|
|
finishOptimizationRemarks();
|
|
|
|
return true;
|
|
}
|
|
|
|
/// setCodeGenDebugOptions - Set codegen debugging options to aid in debugging
|
|
/// LTO problems.
|
|
void LTOCodeGenerator::setCodeGenDebugOptions(StringRef Options) {
|
|
for (std::pair<StringRef, StringRef> o = getToken(Options); !o.first.empty();
|
|
o = getToken(o.second))
|
|
CodegenOptions.push_back(o.first);
|
|
}
|
|
|
|
void LTOCodeGenerator::parseCodeGenDebugOptions() {
|
|
// if options were requested, set them
|
|
if (!CodegenOptions.empty()) {
|
|
// ParseCommandLineOptions() expects argv[0] to be program name.
|
|
std::vector<const char *> CodegenArgv(1, "libLLVMLTO");
|
|
for (std::string &Arg : CodegenOptions)
|
|
CodegenArgv.push_back(Arg.c_str());
|
|
cl::ParseCommandLineOptions(CodegenArgv.size(), CodegenArgv.data());
|
|
}
|
|
}
|
|
|
|
void LTOCodeGenerator::DiagnosticHandler(const DiagnosticInfo &DI,
|
|
void *Context) {
|
|
((LTOCodeGenerator *)Context)->DiagnosticHandler2(DI);
|
|
}
|
|
|
|
void LTOCodeGenerator::DiagnosticHandler2(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);
|
|
}
|
|
|
|
void
|
|
LTOCodeGenerator::setDiagnosticHandler(lto_diagnostic_handler_t DiagHandler,
|
|
void *Ctxt) {
|
|
this->DiagHandler = DiagHandler;
|
|
this->DiagContext = Ctxt;
|
|
if (!DiagHandler)
|
|
return Context.setDiagnosticHandler(nullptr, nullptr);
|
|
// Register the LTOCodeGenerator stub in the LLVMContext to forward the
|
|
// diagnostic to the external DiagHandler.
|
|
Context.setDiagnosticHandler(LTOCodeGenerator::DiagnosticHandler, this,
|
|
/* RespectFilters */ 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));
|
|
}
|