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clang/lib/CodeGen/ItaniumCXXABI.cpp
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| 1701 | } | 1701 | } | ||
| 1702 | 1702 | | |||
| 1703 | bool ItaniumCXXABI::canSpeculativelyEmitVTable(const CXXRecordDecl *RD) const { | 1703 | bool ItaniumCXXABI::canSpeculativelyEmitVTable(const CXXRecordDecl *RD) const { | ||
| 1704 | // We don't emit available_externally vtables if we are in -fapple-kext mode | 1704 | // We don't emit available_externally vtables if we are in -fapple-kext mode | ||
| 1705 | // because kext mode does not permit devirtualization. | 1705 | // because kext mode does not permit devirtualization. | ||
| 1706 | if (CGM.getLangOpts().AppleKext) | 1706 | if (CGM.getLangOpts().AppleKext) | ||
| 1707 | return false; | 1707 | return false; | ||
| 1708 | 1708 | | |||
| 1709 | // If we don't have any not emitted inline virtual function, and if vtable is | 1709 | // If vtable is hidden then it is not safe to emit available_externally | ||
| 1710 | // not hidden, then we are safe to emit available_externally copy of vtable. | 1710 | // copy of vtable. | ||
| 1711 | if (isVTableHidden(RD)) | ||||
| 1712 | return false; | ||||
| 1713 | | ||||
| 1714 | if (CGM.getCodeGenOpts().ForceEmitVTables) | ||||
| 1715 | return true; | ||||
| 1716 | | ||||
| 1717 | // If we don't have any not emitted inline virtual function then we are safe | ||||
| 1718 | // to emit available_externally copy of vtable. | ||||
| 1711 | // FIXME we can still emit a copy of the vtable if we | 1719 | // FIXME we can still emit a copy of the vtable if we | ||
| 1712 | // can emit definition of the inline functions. | 1720 | // can emit definition of the inline functions. | ||
| 1713 | return !hasAnyUnusedVirtualInlineFunction(RD) && !isVTableHidden(RD); | 1721 | return !hasAnyUnusedVirtualInlineFunction(RD); | ||
| 1714 | } | 1722 | } | ||
| 1715 | static llvm::Value *performTypeAdjustment(CodeGenFunction &CGF, | 1723 | static llvm::Value *performTypeAdjustment(CodeGenFunction &CGF, | ||
| 1716 | Address InitialPtr, | 1724 | Address InitialPtr, | ||
| 1717 | int64_t NonVirtualAdjustment, | 1725 | int64_t NonVirtualAdjustment, | ||
| 1718 | int64_t VirtualAdjustment, | 1726 | int64_t VirtualAdjustment, | ||
| 1719 | bool IsReturnAdjustment) { | 1727 | bool IsReturnAdjustment) { | ||
| 1720 | if (!NonVirtualAdjustment && !VirtualAdjustment) | 1728 | if (!NonVirtualAdjustment && !VirtualAdjustment) | ||
| 1721 | return InitialPtr.getPointer(); | 1729 | return InitialPtr.getPointer(); | ||
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