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author | vitalyisaev <vitalyisaev@yandex-team.com> | 2023-06-29 10:00:50 +0300 |
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committer | vitalyisaev <vitalyisaev@yandex-team.com> | 2023-06-29 10:00:50 +0300 |
commit | 6ffe9e53658409f212834330e13564e4952558f6 (patch) | |
tree | 85b1e00183517648b228aafa7c8fb07f5276f419 /contrib/libs/llvm14/lib/CodeGen/MachineModuleInfo.cpp | |
parent | 726057070f9c5a91fc10fde0d5024913d10f1ab9 (diff) | |
download | ydb-6ffe9e53658409f212834330e13564e4952558f6.tar.gz |
YQ Connector: support managed ClickHouse
Со стороны dqrun можно обратиться к инстансу коннектора, который работает на streaming стенде, и извлечь данные из облачного CH.
Diffstat (limited to 'contrib/libs/llvm14/lib/CodeGen/MachineModuleInfo.cpp')
-rw-r--r-- | contrib/libs/llvm14/lib/CodeGen/MachineModuleInfo.cpp | 429 |
1 files changed, 429 insertions, 0 deletions
diff --git a/contrib/libs/llvm14/lib/CodeGen/MachineModuleInfo.cpp b/contrib/libs/llvm14/lib/CodeGen/MachineModuleInfo.cpp new file mode 100644 index 0000000000..31d4fc7d02 --- /dev/null +++ b/contrib/libs/llvm14/lib/CodeGen/MachineModuleInfo.cpp @@ -0,0 +1,429 @@ +//===-- llvm/CodeGen/MachineModuleInfo.cpp ----------------------*- C++ -*-===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +#include "llvm/CodeGen/MachineModuleInfo.h" +#include "llvm/ADT/ArrayRef.h" +#include "llvm/ADT/DenseMap.h" +#include "llvm/ADT/PostOrderIterator.h" +#include "llvm/ADT/StringRef.h" +#include "llvm/ADT/TinyPtrVector.h" +#include "llvm/CodeGen/MachineFunction.h" +#include "llvm/CodeGen/Passes.h" +#include "llvm/IR/BasicBlock.h" +#include "llvm/IR/DerivedTypes.h" +#include "llvm/IR/DiagnosticInfo.h" +#include "llvm/IR/Instructions.h" +#include "llvm/IR/LLVMContext.h" +#include "llvm/IR/Module.h" +#include "llvm/IR/Value.h" +#include "llvm/IR/ValueHandle.h" +#include "llvm/InitializePasses.h" +#include "llvm/MC/MCContext.h" +#include "llvm/MC/MCSymbol.h" +#include "llvm/MC/MCSymbolXCOFF.h" +#include "llvm/Pass.h" +#include "llvm/Support/Casting.h" +#include "llvm/Support/ErrorHandling.h" +#include "llvm/Target/TargetLoweringObjectFile.h" +#include "llvm/Target/TargetMachine.h" +#include <algorithm> +#include <cassert> +#include <memory> +#include <utility> +#include <vector> + +using namespace llvm; +using namespace llvm::dwarf; + +// Out of line virtual method. +MachineModuleInfoImpl::~MachineModuleInfoImpl() = default; + +namespace llvm { + +class MMIAddrLabelMapCallbackPtr final : CallbackVH { + MMIAddrLabelMap *Map = nullptr; + +public: + MMIAddrLabelMapCallbackPtr() = default; + MMIAddrLabelMapCallbackPtr(Value *V) : CallbackVH(V) {} + + void setPtr(BasicBlock *BB) { + ValueHandleBase::operator=(BB); + } + + void setMap(MMIAddrLabelMap *map) { Map = map; } + + void deleted() override; + void allUsesReplacedWith(Value *V2) override; +}; + +class MMIAddrLabelMap { + MCContext &Context; + struct AddrLabelSymEntry { + /// The symbols for the label. + TinyPtrVector<MCSymbol *> Symbols; + + Function *Fn; // The containing function of the BasicBlock. + unsigned Index; // The index in BBCallbacks for the BasicBlock. + }; + + DenseMap<AssertingVH<BasicBlock>, AddrLabelSymEntry> AddrLabelSymbols; + + /// Callbacks for the BasicBlock's that we have entries for. We use this so + /// we get notified if a block is deleted or RAUWd. + std::vector<MMIAddrLabelMapCallbackPtr> BBCallbacks; + + /// This is a per-function list of symbols whose corresponding BasicBlock got + /// deleted. These symbols need to be emitted at some point in the file, so + /// AsmPrinter emits them after the function body. + DenseMap<AssertingVH<Function>, std::vector<MCSymbol*>> + DeletedAddrLabelsNeedingEmission; + +public: + MMIAddrLabelMap(MCContext &context) : Context(context) {} + + ~MMIAddrLabelMap() { + assert(DeletedAddrLabelsNeedingEmission.empty() && + "Some labels for deleted blocks never got emitted"); + } + + ArrayRef<MCSymbol *> getAddrLabelSymbolToEmit(BasicBlock *BB); + + void takeDeletedSymbolsForFunction(Function *F, + std::vector<MCSymbol*> &Result); + + void UpdateForDeletedBlock(BasicBlock *BB); + void UpdateForRAUWBlock(BasicBlock *Old, BasicBlock *New); +}; + +} // end namespace llvm + +ArrayRef<MCSymbol *> MMIAddrLabelMap::getAddrLabelSymbolToEmit(BasicBlock *BB) { + assert(BB->hasAddressTaken() && + "Shouldn't get label for block without address taken"); + AddrLabelSymEntry &Entry = AddrLabelSymbols[BB]; + + // If we already had an entry for this block, just return it. + if (!Entry.Symbols.empty()) { + assert(BB->getParent() == Entry.Fn && "Parent changed"); + return Entry.Symbols; + } + + // Otherwise, this is a new entry, create a new symbol for it and add an + // entry to BBCallbacks so we can be notified if the BB is deleted or RAUWd. + BBCallbacks.emplace_back(BB); + BBCallbacks.back().setMap(this); + Entry.Index = BBCallbacks.size() - 1; + Entry.Fn = BB->getParent(); + MCSymbol *Sym = BB->hasAddressTaken() ? Context.createNamedTempSymbol() + : Context.createTempSymbol(); + Entry.Symbols.push_back(Sym); + return Entry.Symbols; +} + +/// If we have any deleted symbols for F, return them. +void MMIAddrLabelMap:: +takeDeletedSymbolsForFunction(Function *F, std::vector<MCSymbol*> &Result) { + DenseMap<AssertingVH<Function>, std::vector<MCSymbol*>>::iterator I = + DeletedAddrLabelsNeedingEmission.find(F); + + // If there are no entries for the function, just return. + if (I == DeletedAddrLabelsNeedingEmission.end()) return; + + // Otherwise, take the list. + std::swap(Result, I->second); + DeletedAddrLabelsNeedingEmission.erase(I); +} + +void MMIAddrLabelMap::UpdateForDeletedBlock(BasicBlock *BB) { + // If the block got deleted, there is no need for the symbol. If the symbol + // was already emitted, we can just forget about it, otherwise we need to + // queue it up for later emission when the function is output. + AddrLabelSymEntry Entry = std::move(AddrLabelSymbols[BB]); + AddrLabelSymbols.erase(BB); + assert(!Entry.Symbols.empty() && "Didn't have a symbol, why a callback?"); + BBCallbacks[Entry.Index] = nullptr; // Clear the callback. + + assert((BB->getParent() == nullptr || BB->getParent() == Entry.Fn) && + "Block/parent mismatch"); + + for (MCSymbol *Sym : Entry.Symbols) { + if (Sym->isDefined()) + return; + + // If the block is not yet defined, we need to emit it at the end of the + // function. Add the symbol to the DeletedAddrLabelsNeedingEmission list + // for the containing Function. Since the block is being deleted, its + // parent may already be removed, we have to get the function from 'Entry'. + DeletedAddrLabelsNeedingEmission[Entry.Fn].push_back(Sym); + } +} + +void MMIAddrLabelMap::UpdateForRAUWBlock(BasicBlock *Old, BasicBlock *New) { + // Get the entry for the RAUW'd block and remove it from our map. + AddrLabelSymEntry OldEntry = std::move(AddrLabelSymbols[Old]); + AddrLabelSymbols.erase(Old); + assert(!OldEntry.Symbols.empty() && "Didn't have a symbol, why a callback?"); + + AddrLabelSymEntry &NewEntry = AddrLabelSymbols[New]; + + // If New is not address taken, just move our symbol over to it. + if (NewEntry.Symbols.empty()) { + BBCallbacks[OldEntry.Index].setPtr(New); // Update the callback. + NewEntry = std::move(OldEntry); // Set New's entry. + return; + } + + BBCallbacks[OldEntry.Index] = nullptr; // Update the callback. + + // Otherwise, we need to add the old symbols to the new block's set. + llvm::append_range(NewEntry.Symbols, OldEntry.Symbols); +} + +void MMIAddrLabelMapCallbackPtr::deleted() { + Map->UpdateForDeletedBlock(cast<BasicBlock>(getValPtr())); +} + +void MMIAddrLabelMapCallbackPtr::allUsesReplacedWith(Value *V2) { + Map->UpdateForRAUWBlock(cast<BasicBlock>(getValPtr()), cast<BasicBlock>(V2)); +} + +void MachineModuleInfo::initialize() { + ObjFileMMI = nullptr; + CurCallSite = 0; + NextFnNum = 0; + UsesMSVCFloatingPoint = UsesMorestackAddr = false; + HasSplitStack = HasNosplitStack = false; + AddrLabelSymbols = nullptr; +} + +void MachineModuleInfo::finalize() { + Personalities.clear(); + + delete AddrLabelSymbols; + AddrLabelSymbols = nullptr; + + Context.reset(); + // We don't clear the ExternalContext. + + delete ObjFileMMI; + ObjFileMMI = nullptr; +} + +MachineModuleInfo::MachineModuleInfo(MachineModuleInfo &&MMI) + : TM(std::move(MMI.TM)), + Context(MMI.TM.getTargetTriple(), MMI.TM.getMCAsmInfo(), + MMI.TM.getMCRegisterInfo(), MMI.TM.getMCSubtargetInfo(), nullptr, + nullptr, false), + MachineFunctions(std::move(MMI.MachineFunctions)) { + Context.setObjectFileInfo(MMI.TM.getObjFileLowering()); + ObjFileMMI = MMI.ObjFileMMI; + CurCallSite = MMI.CurCallSite; + UsesMSVCFloatingPoint = MMI.UsesMSVCFloatingPoint; + UsesMorestackAddr = MMI.UsesMorestackAddr; + HasSplitStack = MMI.HasSplitStack; + HasNosplitStack = MMI.HasNosplitStack; + AddrLabelSymbols = MMI.AddrLabelSymbols; + ExternalContext = MMI.ExternalContext; + TheModule = MMI.TheModule; +} + +MachineModuleInfo::MachineModuleInfo(const LLVMTargetMachine *TM) + : TM(*TM), Context(TM->getTargetTriple(), TM->getMCAsmInfo(), + TM->getMCRegisterInfo(), TM->getMCSubtargetInfo(), + nullptr, nullptr, false) { + Context.setObjectFileInfo(TM->getObjFileLowering()); + initialize(); +} + +MachineModuleInfo::MachineModuleInfo(const LLVMTargetMachine *TM, + MCContext *ExtContext) + : TM(*TM), Context(TM->getTargetTriple(), TM->getMCAsmInfo(), + TM->getMCRegisterInfo(), TM->getMCSubtargetInfo(), + nullptr, nullptr, false), + ExternalContext(ExtContext) { + Context.setObjectFileInfo(TM->getObjFileLowering()); + initialize(); +} + +MachineModuleInfo::~MachineModuleInfo() { finalize(); } + +//===- Address of Block Management ----------------------------------------===// + +ArrayRef<MCSymbol *> +MachineModuleInfo::getAddrLabelSymbolToEmit(const BasicBlock *BB) { + // Lazily create AddrLabelSymbols. + if (!AddrLabelSymbols) + AddrLabelSymbols = new MMIAddrLabelMap(getContext()); + return AddrLabelSymbols->getAddrLabelSymbolToEmit(const_cast<BasicBlock*>(BB)); +} + +void MachineModuleInfo:: +takeDeletedSymbolsForFunction(const Function *F, + std::vector<MCSymbol*> &Result) { + // If no blocks have had their addresses taken, we're done. + if (!AddrLabelSymbols) return; + return AddrLabelSymbols-> + takeDeletedSymbolsForFunction(const_cast<Function*>(F), Result); +} + +/// \name Exception Handling +/// \{ + +void MachineModuleInfo::addPersonality(const Function *Personality) { + if (!llvm::is_contained(Personalities, Personality)) + Personalities.push_back(Personality); +} + +/// \} + +MachineFunction * +MachineModuleInfo::getMachineFunction(const Function &F) const { + auto I = MachineFunctions.find(&F); + return I != MachineFunctions.end() ? I->second.get() : nullptr; +} + +MachineFunction &MachineModuleInfo::getOrCreateMachineFunction(Function &F) { + // Shortcut for the common case where a sequence of MachineFunctionPasses + // all query for the same Function. + if (LastRequest == &F) + return *LastResult; + + auto I = MachineFunctions.insert( + std::make_pair(&F, std::unique_ptr<MachineFunction>())); + MachineFunction *MF; + if (I.second) { + // No pre-existing machine function, create a new one. + const TargetSubtargetInfo &STI = *TM.getSubtargetImpl(F); + MF = new MachineFunction(F, TM, STI, NextFnNum++, *this); + // Update the set entry. + I.first->second.reset(MF); + } else { + MF = I.first->second.get(); + } + + LastRequest = &F; + LastResult = MF; + return *MF; +} + +void MachineModuleInfo::deleteMachineFunctionFor(Function &F) { + MachineFunctions.erase(&F); + LastRequest = nullptr; + LastResult = nullptr; +} + +namespace { + +/// This pass frees the MachineFunction object associated with a Function. +class FreeMachineFunction : public FunctionPass { +public: + static char ID; + + FreeMachineFunction() : FunctionPass(ID) {} + + void getAnalysisUsage(AnalysisUsage &AU) const override { + AU.addRequired<MachineModuleInfoWrapperPass>(); + AU.addPreserved<MachineModuleInfoWrapperPass>(); + } + + bool runOnFunction(Function &F) override { + MachineModuleInfo &MMI = + getAnalysis<MachineModuleInfoWrapperPass>().getMMI(); + MMI.deleteMachineFunctionFor(F); + return true; + } + + StringRef getPassName() const override { + return "Free MachineFunction"; + } +}; + +} // end anonymous namespace + +char FreeMachineFunction::ID; + +FunctionPass *llvm::createFreeMachineFunctionPass() { + return new FreeMachineFunction(); +} + +MachineModuleInfoWrapperPass::MachineModuleInfoWrapperPass( + const LLVMTargetMachine *TM) + : ImmutablePass(ID), MMI(TM) { + initializeMachineModuleInfoWrapperPassPass(*PassRegistry::getPassRegistry()); +} + +MachineModuleInfoWrapperPass::MachineModuleInfoWrapperPass( + const LLVMTargetMachine *TM, MCContext *ExtContext) + : ImmutablePass(ID), MMI(TM, ExtContext) { + initializeMachineModuleInfoWrapperPassPass(*PassRegistry::getPassRegistry()); +} + +// Handle the Pass registration stuff necessary to use DataLayout's. +INITIALIZE_PASS(MachineModuleInfoWrapperPass, "machinemoduleinfo", + "Machine Module Information", false, false) +char MachineModuleInfoWrapperPass::ID = 0; + +static unsigned getLocCookie(const SMDiagnostic &SMD, const SourceMgr &SrcMgr, + std::vector<const MDNode *> &LocInfos) { + // Look up a LocInfo for the buffer this diagnostic is coming from. + unsigned BufNum = SrcMgr.FindBufferContainingLoc(SMD.getLoc()); + const MDNode *LocInfo = nullptr; + if (BufNum > 0 && BufNum <= LocInfos.size()) + LocInfo = LocInfos[BufNum - 1]; + + // If the inline asm had metadata associated with it, pull out a location + // cookie corresponding to which line the error occurred on. + unsigned LocCookie = 0; + if (LocInfo) { + unsigned ErrorLine = SMD.getLineNo() - 1; + if (ErrorLine >= LocInfo->getNumOperands()) + ErrorLine = 0; + + if (LocInfo->getNumOperands() != 0) + if (const ConstantInt *CI = + mdconst::dyn_extract<ConstantInt>(LocInfo->getOperand(ErrorLine))) + LocCookie = CI->getZExtValue(); + } + + return LocCookie; +} + +bool MachineModuleInfoWrapperPass::doInitialization(Module &M) { + MMI.initialize(); + MMI.TheModule = &M; + // FIXME: Do this for new pass manager. + LLVMContext &Ctx = M.getContext(); + MMI.getContext().setDiagnosticHandler( + [&Ctx, &M](const SMDiagnostic &SMD, bool IsInlineAsm, + const SourceMgr &SrcMgr, + std::vector<const MDNode *> &LocInfos) { + unsigned LocCookie = 0; + if (IsInlineAsm) + LocCookie = getLocCookie(SMD, SrcMgr, LocInfos); + Ctx.diagnose( + DiagnosticInfoSrcMgr(SMD, M.getName(), IsInlineAsm, LocCookie)); + }); + MMI.DbgInfoAvailable = !M.debug_compile_units().empty(); + return false; +} + +bool MachineModuleInfoWrapperPass::doFinalization(Module &M) { + MMI.finalize(); + return false; +} + +AnalysisKey MachineModuleAnalysis::Key; + +MachineModuleInfo MachineModuleAnalysis::run(Module &M, + ModuleAnalysisManager &) { + MachineModuleInfo MMI(TM); + MMI.TheModule = &M; + MMI.DbgInfoAvailable = !M.debug_compile_units().empty(); + return MMI; +} |