clang 24.0.0git
Namespaces | Functions
CGException.cpp File Reference
#include "CGCXXABI.h"
#include "CGCleanup.h"
#include "CGDebugInfo.h"
#include "CGObjCRuntime.h"
#include "CodeGenFunction.h"
#include "ConstantEmitter.h"
#include "TargetInfo.h"
#include "clang/AST/Mangle.h"
#include "clang/AST/StmtCXX.h"
#include "clang/AST/StmtObjC.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/Basic/DiagnosticSema.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/IntrinsicsWebAssembly.h"
#include "llvm/Support/SaveAndRestore.h"

Go to the source code of this file.

Namespaces

namespace  clang
 Top level wrappers for InstallAPI frontend operations.
namespace  clang::CodeGen

Functions

static llvm::FunctionCallee getFreeExceptionFn (CodeGenModule &CGM)
static llvm::FunctionCallee getUnexpectedFn (CodeGenModule &CGM)
static llvm::FunctionCallee getCatchallRethrowFn (CodeGenModule &CGM, StringRef Name)
const EHPersonality & clang::CodeGen::getEHPersonality (CodeGenModule &CGM, const FunctionDecl *FD)
 Selects the personality function to use for FD, or for the translation unit as a whole when FD is null.
const EHPersonality & clang::CodeGen::getEHPersonality (CodeGenFunction &CGF)
 Selects the personality function to use for the function currently being emitted.
static llvm::FunctionCallee getPersonalityFn (CodeGenModule &CGM, const EHPersonality &Personality)
static llvm::Constant * getOpaquePersonalityFn (CodeGenModule &CGM, const EHPersonality &Personality)
static bool LandingPadHasOnlyCXXUses (llvm::LandingPadInst *LPI)
 Check whether a landingpad instruction only uses C++ features.
static bool PersonalityHasOnlyCXXUses (llvm::Constant *Fn)
 Check whether a personality function could reasonably be swapped for a C++ personality function.
static llvm::Constant * getCatchAllValue (CodeGenFunction &CGF)
 Returns the value to inject into a selector to indicate the presence of a catch-all.
static void emitFilterDispatchBlock (CodeGenFunction &CGF, EHFilterScope &filterScope)
 Emit the dispatch block for a filter scope if necessary.
static bool isNonEHScope (const EHScope &S)
 Check whether this is a non-EH scope, i.e.
static void emitCatchPadBlock (CodeGenFunction &CGF, EHCatchScope &CatchScope)
static void emitWasmCatchPadBlock (CodeGenFunction &CGF, EHCatchScope &CatchScope)
static void emitCatchDispatchBlock (CodeGenFunction &CGF, EHCatchScope &catchScope)
 Emit the structure of the dispatch block for the given catch scope.

Function Documentation

◆ emitCatchDispatchBlock()

void emitCatchDispatchBlock ( CodeGenFunction & CGF,
EHCatchScope & catchScope )
static

Emit the structure of the dispatch block for the given catch scope.

It is an invariant that the dispatch block already exists.

Definition at line 983 of file CGException.cpp.

References clang::CodeGen::EHCatchScope::Handler::Block, clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::createBasicBlock(), clang::CodeGen::CodeGenFunction::EmitBlock(), clang::CodeGen::CodeGenFunction::EmitBlockAfterUses(), emitCatchPadBlock(), emitWasmCatchPadBlock(), clang::CodeGen::CatchTypeInfo::Flags, clang::CodeGen::EHScope::getCachedEHDispatchBlock(), clang::CodeGen::CodeGenFunction::getEHDispatchBlock(), clang::CodeGen::getEHPersonality(), clang::CodeGen::EHScope::getEnclosingEHScope(), clang::CodeGen::EHCatchScope::getHandler(), clang::CodeGen::CodeGenModule::getIntrinsic(), clang::CodeGen::EHCatchScope::getNumHandlers(), clang::CodeGen::CodeGenFunction::getSelectorFromSlot(), clang::CodeGen::EHCatchScope::Handler::isCatchAll(), clang::CodeGen::CodeGenFunction::performAddrSpaceCast(), clang::CodeGen::CatchTypeInfo::RTTI, clang::CodeGen::EHCatchScope::Handler::Type, and clang::CodeGen::CodeGenTypeCache::VoidPtrTy.

Referenced by clang::CodeGen::CodeGenFunction::ExitCXXTryStmt(), clang::CodeGen::CodeGenFunction::ExitSEHTryStmt(), and clang::CodeGen::CodeGenFunction::popCatchScope().

◆ emitCatchPadBlock()

void emitCatchPadBlock ( CodeGenFunction & CGF,
EHCatchScope & CatchScope )
static

Definition at line 831 of file CGException.cpp.

References clang::CodeGen::EHCatchScope::Handler::Block, clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CurrentFuncletPad, clang::CodeGen::CodeGenFunction::EmitBlockAfterUses(), clang::CodeGen::EHScope::getCachedEHDispatchBlock(), clang::CodeGen::CodeGenFunction::getEHDispatchBlock(), clang::CodeGen::getEHPersonality(), clang::CodeGen::EHScope::getEnclosingEHScope(), clang::CodeGen::EHCatchScope::getHandler(), clang::CodeGen::CodeGenFunction::getLLVMContext(), clang::CodeGen::EHCatchScope::getNumHandlers(), clang::CodeGen::EHCatchScope::Handler::Type, and clang::CodeGen::CodeGenTypeCache::VoidPtrTy.

Referenced by emitCatchDispatchBlock().

◆ emitFilterDispatchBlock()

void emitFilterDispatchBlock ( CodeGenFunction & CGF,
EHFilterScope & filterScope )
static

Emit the dispatch block for a filter scope if necessary.

Definition at line 393 of file CGException.cpp.

References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::createBasicBlock(), clang::CodeGen::CodeGenFunction::EmitBlock(), clang::CodeGen::CodeGenFunction::EmitBlockAfterUses(), clang::CodeGen::CodeGenFunction::EmitRuntimeCall(), clang::CodeGen::EHScope::getCachedEHDispatchBlock(), clang::CodeGen::CodeGenFunction::getEHResumeBlock(), clang::CodeGen::CodeGenFunction::getExceptionFromSlot(), clang::CodeGen::EHFilterScope::getNumFilters(), clang::CodeGen::CodeGenFunction::getSelectorFromSlot(), and getUnexpectedFn().

Referenced by clang::CodeGen::CodeGenFunction::EmitEndEHSpec().

◆ emitWasmCatchPadBlock()

void emitWasmCatchPadBlock ( CodeGenFunction & CGF,
EHCatchScope & CatchScope )
static

Definition at line 874 of file CGException.cpp.

References clang::CodeGen::EHCatchScope::Handler::Block, clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::createBasicBlock(), clang::CodeGen::CGBuilderTy::CreateStore(), clang::CodeGen::CodeGenFunction::CurrentFuncletPad, clang::CodeGen::CodeGenFunction::EmitBlock(), clang::CodeGen::CodeGenFunction::EmitBlockAfterUses(), clang::CodeGen::EHScope::getCachedEHDispatchBlock(), clang::CodeGen::CodeGenFunction::getEHDispatchBlock(), clang::CodeGen::EHScope::getEnclosingEHScope(), clang::CodeGen::CodeGenFunction::getExceptionSlot(), clang::CodeGen::EHCatchScope::getHandler(), clang::CodeGen::CodeGenModule::getIntrinsic(), clang::CodeGen::CodeGenFunction::getLLVMContext(), clang::CodeGen::EHCatchScope::getNumHandlers(), clang::CodeGen::EHCatchScope::Handler::isCatchAll(), clang::CodeGen::EHCatchScope::Handler::Type, and clang::CodeGen::CodeGenTypeCache::VoidPtrTy.

Referenced by emitCatchDispatchBlock().

◆ getCatchallRethrowFn()

llvm::FunctionCallee getCatchallRethrowFn ( CodeGenModule & CGM,
StringRef Name )
static

Definition at line 77 of file CGException.cpp.

References clang::CodeGen::CodeGenModule::CreateRuntimeFunction(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, and clang::CodeGen::CodeGenTypeCache::VoidTy.

Referenced by clang::CodeGen::CodeGenFunction::getEHResumeBlock().

◆ getCatchAllValue()

llvm::Constant * getCatchAllValue ( CodeGenFunction & CGF)
static

Returns the value to inject into a selector to indicate the presence of a catch-all.

Definition at line 224 of file CGException.cpp.

References clang::CodeGen::CodeGenTypeCache::Int8PtrTy.

Referenced by clang::CodeGen::CodeGenFunction::EmitLandingPad(), and clang::CodeGen::CodeGenFunction::getTerminateLandingPad().

◆ getFreeExceptionFn()

llvm::FunctionCallee getFreeExceptionFn ( CodeGenModule & CGM)
static

Definition at line 33 of file CGException.cpp.

References clang::CodeGen::CodeGenModule::CreateRuntimeFunction(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, and clang::CodeGen::CodeGenTypeCache::VoidTy.

◆ getOpaquePersonalityFn()

llvm::Constant * getOpaquePersonalityFn ( CodeGenModule & CGM,
const EHPersonality & Personality )
static

Definition at line 117 of file CGException.cpp.

References clang::cast(), and getPersonalityFn().

Referenced by clang::CodeGen::CodeGenFunction::getInvokeDestImpl(), and clang::CodeGen::CodeGenFunction::getTerminateLandingPad().

◆ getPersonalityFn()

llvm::FunctionCallee getPersonalityFn ( CodeGenModule & CGM,
const EHPersonality & Personality )
static

Definition at line 104 of file CGException.cpp.

References clang::CodeGen::CodeGenModule::CreateRuntimeFunction(), clang::CodeGen::CodeGenTypeCache::Int32Ty, clang::CodeGenUtils::EHPersonality::isWasmPersonality(), and clang::CodeGenUtils::EHPersonality::PersonalityFn.

◆ getUnexpectedFn()

llvm::FunctionCallee getUnexpectedFn ( CodeGenModule & CGM)
static

Definition at line 42 of file CGException.cpp.

References clang::CodeGen::CodeGenModule::CreateRuntimeFunction(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, and clang::CodeGen::CodeGenTypeCache::VoidTy.

Referenced by emitFilterDispatchBlock().

◆ isNonEHScope()

bool isNonEHScope ( const EHScope & S)
static

Check whether this is a non-EH scope, i.e.

a scope which doesn't affect exception handling. Currently, the only non-EH scopes are normal-only cleanup scopes.

Definition at line 627 of file CGException.cpp.

References clang::cast(), clang::CodeGen::EHScope::Catch, clang::CodeGen::EHScope::Cleanup, clang::CodeGen::EHScope::Filter, clang::CodeGen::EHScope::getKind(), and clang::CodeGen::EHScope::Terminate.

Referenced by clang::CodeGen::CodeGenFunction::getInvokeDestImpl().

◆ LandingPadHasOnlyCXXUses()

bool LandingPadHasOnlyCXXUses ( llvm::LandingPadInst * LPI)
static

Check whether a landingpad instruction only uses C++ features.

Definition at line 124 of file CGException.cpp.

References clang::cast().

Referenced by PersonalityHasOnlyCXXUses().

◆ PersonalityHasOnlyCXXUses()

bool PersonalityHasOnlyCXXUses ( llvm::Constant * Fn)
static

Check whether a personality function could reasonably be swapped for a C++ personality function.

Definition at line 155 of file CGException.cpp.

References LandingPadHasOnlyCXXUses(), and PersonalityHasOnlyCXXUses().

Referenced by PersonalityHasOnlyCXXUses().

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