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Enumerations | |
| enum | ForActivation_t { ForActivation , ForDeactivation } |
Functions | |
| static void | createStoreInstBefore (llvm::Value *value, Address addr, llvm::Instruction *beforeInst) |
| static llvm::LoadInst * | createLoadInstBefore (Address addr, const Twine &name, llvm::Instruction *beforeInst) |
| static void | ResolveAllBranchFixups (CodeGenFunction &CGF, llvm::SwitchInst *Switch, llvm::BasicBlock *CleanupEntry) |
| All the branch fixups on the EH stack have propagated out past the outermost normal cleanup; resolve them all by adding cases to the given switch instruction. | |
| static llvm::SwitchInst * | TransitionToCleanupSwitch (CodeGenFunction &CGF, llvm::BasicBlock *Block) |
| Transitions the terminator of the given exit-block of a cleanup to be a cleanup switch. | |
| static llvm::BasicBlock * | CreateNormalEntry (CodeGenFunction &CGF, EHCleanupScope &Scope) |
| static llvm::BasicBlock * | SimplifyCleanupEntry (CodeGenFunction &CGF, llvm::BasicBlock *Entry) |
| Attempts to reduce a cleanup's entry block to a fallthrough. | |
| static void | EmitCleanup (CodeGenFunction &CGF, EHScopeStack::Cleanup *Fn, EHScopeStack::Cleanup::Flags flags, Address ActiveFlag) |
| static void | ForwardPrebranchedFallthrough (llvm::BasicBlock *Exit, llvm::BasicBlock *From, llvm::BasicBlock *To) |
| static void | destroyOptimisticNormalEntry (CodeGenFunction &CGF, EHCleanupScope &scope) |
| We don't need a normal entry block for the given cleanup. | |
| static bool | IsUsedAsNormalCleanup (EHScopeStack &EHStack, EHScopeStack::stable_iterator C) |
| static bool | IsUsedAsEHCleanup (EHScopeStack &EHStack, EHScopeStack::stable_iterator cleanup) |
| static void | SetupCleanupBlockActivation (CodeGenFunction &CGF, EHScopeStack::stable_iterator C, ForActivation_t kind, llvm::Instruction *dominatingIP) |
| The given cleanup block is changing activation state. | |
| static void | EmitSehScope (CodeGenFunction &CGF, llvm::FunctionCallee &SehCppScope) |
Enumeration Type Documentation
◆ ForActivation_t
| enum ForActivation_t |
| Enumerator | |
|---|---|
| ForActivation | |
| ForDeactivation | |
Definition at line 1202 of file CGCleanup.cpp.
Function Documentation
◆ createLoadInstBefore()
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static |
Definition at line 325 of file CGCleanup.cpp.
References clang::CodeGen::Address::getAlignment(), clang::CharUnits::getAsAlign(), clang::CodeGen::Address::getElementType(), and clang::CodeGen::Address::getPointer().
Referenced by TransitionToCleanupSwitch().
◆ CreateNormalEntry()
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Definition at line 520 of file CGCleanup.cpp.
References clang::CodeGen::CodeGenFunction::createBasicBlock().
◆ createStoreInstBefore()
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Definition at line 319 of file CGCleanup.cpp.
References clang::CodeGen::Address::getAlignment(), clang::CharUnits::getAsAlign(), and clang::CodeGen::Address::getPointer().
Referenced by ResolveAllBranchFixups(), and SetupCleanupBlockActivation().
◆ destroyOptimisticNormalEntry()
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static |
We don't need a normal entry block for the given cleanup.
Optimistic fixup branches can cause these blocks to come into existence anyway; if so, destroy it.
The validity of this transformation is very much specific to the exact ways in which we form branches to cleanup entries.
Definition at line 619 of file CGCleanup.cpp.
References clang::CodeGen::EHCleanupScope::getNormalBlock(), clang::CodeGen::Address::getPointer(), clang::CodeGen::CodeGenFunction::getUnreachableBlock(), and clang::CodeGen::CodeGenFunction::NormalCleanupDest.
◆ EmitCleanup()
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static |
Definition at line 570 of file CGCleanup.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::createBasicBlock(), clang::CodeGen::CGBuilderTy::CreateLoad(), clang::CodeGen::EHScopeStack::Cleanup::Emit(), clang::CodeGen::CodeGenFunction::EmitBlock(), clang::CodeGen::CodeGenFunction::HaveInsertPoint(), and clang::CodeGen::Address::isValid().
◆ EmitSehScope()
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static |
Definition at line 1329 of file CGCleanup.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::createBasicBlock(), clang::CodeGen::CodeGenFunction::CurrentFuncletPad, clang::CodeGen::CodeGenFunction::EmitBlock(), clang::CodeGen::CodeGenFunction::getBundlesForFunclet(), and clang::CodeGen::CodeGenFunction::getInvokeDest().
◆ ForwardPrebranchedFallthrough()
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static |
Definition at line 595 of file CGCleanup.cpp.
References clang::Switch.
◆ IsUsedAsEHCleanup()
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Definition at line 1181 of file CGCleanup.cpp.
References clang::CodeGen::EHScopeStack::find(), clang::CodeGen::EHScope::getEnclosingEHScope(), clang::CodeGen::EHScopeStack::getInnermostEHScope(), and clang::CodeGen::EHScope::hasEHBranches().
Referenced by SetupCleanupBlockActivation().
◆ IsUsedAsNormalCleanup()
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Definition at line 1162 of file CGCleanup.cpp.
References clang::C, clang::CodeGen::EHScopeStack::find(), and clang::CodeGen::EHScopeStack::getInnermostNormalCleanup().
Referenced by SetupCleanupBlockActivation().
◆ ResolveAllBranchFixups()
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static |
All the branch fixups on the EH stack have propagated out past the outermost normal cleanup; resolve them all by adding cases to the given switch instruction.
Definition at line 335 of file CGCleanup.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::EHScopeStack::clearFixups(), createStoreInstBefore(), clang::CodeGen::BranchFixup::Destination, clang::CodeGen::BranchFixup::DestinationIndex, clang::CodeGen::CodeGenFunction::EHStack, clang::CodeGen::EHScopeStack::getBranchFixup(), clang::CodeGen::CodeGenFunction::getNormalCleanupDestSlot(), clang::CodeGen::EHScopeStack::getNumBranchFixups(), clang::CodeGen::BranchFixup::InitialBranch, clang::CodeGen::BranchFixup::OptimisticBranchBlock, and clang::Switch.
◆ SetupCleanupBlockActivation()
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static |
The given cleanup block is changing activation state.
Configure a cleanup variable if necessary.
It would be good if we had some way of determining if there were extra uses after the change-over point.
Definition at line 1212 of file CGCleanup.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::C, clang::CodeGen::CGBuilderTy::CreateStore(), createStoreInstBefore(), clang::CodeGen::CodeGenFunction::CreateTempAlloca(), clang::CodeGen::CodeGenFunction::EHStack, clang::CodeGen::EHScopeStack::find(), ForActivation, ForDeactivation, clang::CodeGen::CodeGenFunction::isInConditionalBranch(), IsUsedAsEHCleanup(), IsUsedAsNormalCleanup(), clang::CodeGen::Address::isValid(), clang::CharUnits::One(), and clang::CodeGen::CodeGenFunction::setBeforeOutermostConditional().
◆ SimplifyCleanupEntry()
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static |
Attempts to reduce a cleanup's entry block to a fallthrough.
This is basically llvm::MergeBlockIntoPredecessor, except simplified/optimized for the tighter constraints on cleanup blocks.
Returns the new block, whatever it is.
Definition at line 536 of file CGCleanup.cpp.
References clang::CodeGen::CodeGenFunction::Builder.
◆ TransitionToCleanupSwitch()
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Transitions the terminator of the given exit-block of a cleanup to be a cleanup switch.
Definition at line 373 of file CGCleanup.cpp.
References clang::Block, createLoadInstBefore(), clang::CodeGen::CodeGenFunction::getNormalCleanupDestSlot(), and clang::Switch.
