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clang/lib/CodeGen/CGException.cpp
| Show First 20 Lines • Show All 221 Lines • ▼ Show 20 Lines | |||||
| } | } | ||||
| static const EHPersonality &getSEHPersonalityMSVC(const llvm::Triple &T) { | static const EHPersonality &getSEHPersonalityMSVC(const llvm::Triple &T) { | ||||
| if (T.getArch() == llvm::Triple::x86) | if (T.getArch() == llvm::Triple::x86) | ||||
| return EHPersonality::MSVC_except_handler; | return EHPersonality::MSVC_except_handler; | ||||
| return EHPersonality::MSVC_C_specific_handler; | return EHPersonality::MSVC_C_specific_handler; | ||||
| } | } | ||||
| const EHPersonality &EHPersonality::get(CodeGenModule &CGM, | const EHPersonality &EHPersonality::get(const CodeGenModule &CGM, | ||||
| const FunctionDecl *FD) { | const FunctionDecl *FD) { | ||||
| const llvm::Triple &T = CGM.getTarget().getTriple(); | const llvm::Triple &T = CGM.getTarget().getTriple(); | ||||
| const LangOptions &L = CGM.getLangOpts(); | const LangOptions &L = CGM.getLangOpts(); | ||||
| const TargetInfo &Target = CGM.getTarget(); | const TargetInfo &Target = CGM.getTarget(); | ||||
| // Functions using SEH get an SEH personality. | // Functions using SEH get an SEH personality. | ||||
| if (FD && FD->usesSEHTry()) | if (FD && FD->usesSEHTry()) | ||||
| return getSEHPersonalityMSVC(T); | return getSEHPersonalityMSVC(T); | ||||
| if (L.ObjC) | if (L.ObjC) | ||||
| return L.CPlusPlus ? getObjCXXPersonality(Target, L) | return L.CPlusPlus ? getObjCXXPersonality(Target, L) | ||||
| : getObjCPersonality(Target, L); | : getObjCPersonality(Target, L); | ||||
| return L.CPlusPlus ? getCXXPersonality(Target, L) | return L.CPlusPlus ? getCXXPersonality(Target, L) | ||||
| : getCPersonality(Target, L); | : getCPersonality(Target, L); | ||||
| } | } | ||||
| const EHPersonality &EHPersonality::get(CodeGenFunction &CGF) { | const EHPersonality &EHPersonality::get(const CodeGenFunction &CGF) { | ||||
| const auto *FD = CGF.CurCodeDecl; | const auto *FD = CGF.CurCodeDecl; | ||||
| // For outlined finallys and filters, use the SEH personality in case they | // For outlined finallys and filters, use the SEH personality in case they | ||||
| // contain more SEH. This mostly only affects finallys. Filters could | // contain more SEH. This mostly only affects finallys. Filters could | ||||
| // hypothetically use gnu statement expressions to sneak in nested SEH. | // hypothetically use gnu statement expressions to sneak in nested SEH. | ||||
| FD = FD ? FD : CGF.CurSEHParent.getDecl(); | FD = FD ? FD : CGF.CurSEHParent.getDecl(); | ||||
| return get(CGF.CGM, dyn_cast_or_null<FunctionDecl>(FD)); | return get(CGF.CGM, dyn_cast_or_null<FunctionDecl>(FD)); | ||||
| } | } | ||||
| ▲ Show 20 Lines • Show All 177 Lines • ▼ Show 20 Lines | |||||
| llvm::Value *CodeGenFunction::getExceptionFromSlot() { | llvm::Value *CodeGenFunction::getExceptionFromSlot() { | ||||
| return Builder.CreateLoad(getExceptionSlot(), "exn"); | return Builder.CreateLoad(getExceptionSlot(), "exn"); | ||||
| } | } | ||||
| llvm::Value *CodeGenFunction::getSelectorFromSlot() { | llvm::Value *CodeGenFunction::getSelectorFromSlot() { | ||||
| return Builder.CreateLoad(getEHSelectorSlot(), "sel"); | return Builder.CreateLoad(getEHSelectorSlot(), "sel"); | ||||
| } | } | ||||
| bool CodeGenFunction::shouldUseUnwindAbort() const { | |||||
| return getLangOpts().Exceptions && EHStack.inTerminateScope() && | |||||
| EHPersonality::get(*this).supportsUnwindAbort(); | |||||
| } | |||||
| void CodeGenFunction::setupPersonalityFn() { | |||||
| if (!CurFn->hasPersonalityFn()) { | |||||
| const EHPersonality &Personality = EHPersonality::get(*this); | |||||
| CurFn->setPersonalityFn(getOpaquePersonalityFn(CGM, Personality)); | |||||
| } | |||||
| } | |||||
| void CodeGenFunction::EmitCXXThrowExpr(const CXXThrowExpr *E, | void CodeGenFunction::EmitCXXThrowExpr(const CXXThrowExpr *E, | ||||
| bool KeepInsertionPoint) { | bool KeepInsertionPoint) { | ||||
| if (const Expr *SubExpr = E->getSubExpr()) { | if (const Expr *SubExpr = E->getSubExpr()) { | ||||
| QualType ThrowType = SubExpr->getType(); | QualType ThrowType = SubExpr->getType(); | ||||
| if (ThrowType->isObjCObjectPointerType()) { | if (ThrowType->isObjCObjectPointerType()) { | ||||
| const Stmt *ThrowStmt = E->getSubExpr(); | const Stmt *ThrowStmt = E->getSubExpr(); | ||||
| const ObjCAtThrowStmt S(E->getExprLoc(), const_cast<Stmt *>(ThrowStmt)); | const ObjCAtThrowStmt S(E->getExprLoc(), const_cast<Stmt *>(ThrowStmt)); | ||||
| CGM.getObjCRuntime().EmitThrowStmt(*this, S, false); | CGM.getObjCRuntime().EmitThrowStmt(*this, S, false); | ||||
| ▲ Show 20 Lines • Show All 325 Lines • ▼ Show 20 Lines | llvm::BasicBlock *CodeGenFunction::getInvokeDestImpl() { | ||||
| if (LO.CUDA && LO.CUDAIsDevice) | if (LO.CUDA && LO.CUDAIsDevice) | ||||
| return nullptr; | return nullptr; | ||||
| // Check the innermost scope for a cached landing pad. If this is | // Check the innermost scope for a cached landing pad. If this is | ||||
| // a non-EH cleanup, we'll check enclosing scopes in EmitLandingPad. | // a non-EH cleanup, we'll check enclosing scopes in EmitLandingPad. | ||||
| llvm::BasicBlock *LP = EHStack.begin()->getCachedLandingPad(); | llvm::BasicBlock *LP = EHStack.begin()->getCachedLandingPad(); | ||||
| if (LP) return LP; | if (LP) return LP; | ||||
| const EHPersonality &Personality = EHPersonality::get(*this); | setupPersonalityFn(); | ||||
| if (!CurFn->hasPersonalityFn()) | |||||
| CurFn->setPersonalityFn(getOpaquePersonalityFn(CGM, Personality)); | |||||
| if (Personality.usesFuncletPads()) { | if (EHPersonality::get(*this).usesFuncletPads()) { | ||||
| // We don't need separate landing pads in the funclet model. | // We don't need separate landing pads in the funclet model. | ||||
| LP = getEHDispatchBlock(EHStack.getInnermostEHScope()); | LP = getEHDispatchBlock(EHStack.getInnermostEHScope()); | ||||
| } else { | } else { | ||||
| // Build the landing pad for this scope. | // Build the landing pad for this scope. | ||||
| LP = EmitLandingPad(); | LP = EmitLandingPad(); | ||||
| } | } | ||||
| assert(LP); | assert(LP); | ||||
| ▲ Show 20 Lines • Show All 715 Lines • ▼ Show 20 Lines | llvm::BasicBlock *CodeGenFunction::getTerminateLandingPad() { | ||||
| CGBuilderTy::InsertPoint SavedIP = Builder.saveAndClearIP(); | CGBuilderTy::InsertPoint SavedIP = Builder.saveAndClearIP(); | ||||
| // This will get inserted at the end of the function. | // This will get inserted at the end of the function. | ||||
| TerminateLandingPad = createBasicBlock("terminate.lpad"); | TerminateLandingPad = createBasicBlock("terminate.lpad"); | ||||
| Builder.SetInsertPoint(TerminateLandingPad); | Builder.SetInsertPoint(TerminateLandingPad); | ||||
| // Tell the backend that this is a landing pad. | // Tell the backend that this is a landing pad. | ||||
| const EHPersonality &Personality = EHPersonality::get(*this); | setupPersonalityFn(); | ||||
| if (!CurFn->hasPersonalityFn()) | |||||
| CurFn->setPersonalityFn(getOpaquePersonalityFn(CGM, Personality)); | |||||
| llvm::LandingPadInst *LPadInst = | llvm::LandingPadInst *LPadInst = | ||||
| Builder.CreateLandingPad(llvm::StructType::get(Int8PtrTy, Int32Ty), 0); | Builder.CreateLandingPad(llvm::StructType::get(Int8PtrTy, Int32Ty), 0); | ||||
| LPadInst->addClause(getCatchAllValue(*this)); | LPadInst->addClause(getCatchAllValue(*this)); | ||||
| llvm::Value *Exn = nullptr; | llvm::Value *Exn = nullptr; | ||||
| if (getLangOpts().CPlusPlus) | if (getLangOpts().CPlusPlus) | ||||
| Exn = Builder.CreateExtractValue(LPadInst, 0); | Exn = Builder.CreateExtractValue(LPadInst, 0); | ||||
| ▲ Show 20 Lines • Show All 752 Lines • Show Last 20 Lines | |||||