diff options
Diffstat (limited to 'include/llvm/IR/Attributes.h')
| -rw-r--r-- | include/llvm/IR/Attributes.h | 52 |
1 files changed, 39 insertions, 13 deletions
diff --git a/include/llvm/IR/Attributes.h b/include/llvm/IR/Attributes.h index c23ba0f73c58..5ff48d688918 100644 --- a/include/llvm/IR/Attributes.h +++ b/include/llvm/IR/Attributes.h @@ -71,9 +71,11 @@ public: Builtin, ///< Callee is recognized as a builtin, despite ///< nobuiltin attribute on its declaration. ByVal, ///< Pass structure by value + InAlloca, ///< Pass structure in an alloca Cold, ///< Marks function as being in a cold path. InlineHint, ///< Source said inlining was desirable InReg, ///< Force argument to be passed in register + JumpTable, ///< Build jump-instruction tables and replace refs. MinSize, ///< Function must be optimized for size first Naked, ///< Naked function Nest, ///< Nested function static chain @@ -85,6 +87,8 @@ public: NoInline, ///< inline=never NonLazyBind, ///< Function is called early and/or ///< often, so lazy binding isn't worthwhile + NonNull, ///< Pointer is known to be not null + Dereferenceable, ///< Pointer is known to be dereferenceable NoRedZone, ///< Disable redzone NoReturn, ///< Mark the function as not returning NoUnwind, ///< Function doesn't unwind stack @@ -115,7 +119,7 @@ private: AttributeImpl *pImpl; Attribute(AttributeImpl *A) : pImpl(A) {} public: - Attribute() : pImpl(0) {} + Attribute() : pImpl(nullptr) {} //===--------------------------------------------------------------------===// // Attribute Construction @@ -130,6 +134,8 @@ public: /// alignment set. static Attribute getWithAlignment(LLVMContext &Context, uint64_t Align); static Attribute getWithStackAlignment(LLVMContext &Context, uint64_t Align); + static Attribute getWithDereferenceableBytes(LLVMContext &Context, + uint64_t Bytes); //===--------------------------------------------------------------------===// // Attribute Accessors @@ -138,8 +144,8 @@ public: /// \brief Return true if the attribute is an Attribute::AttrKind type. bool isEnumAttribute() const; - /// \brief Return true if the attribute is an alignment attribute. - bool isAlignAttribute() const; + /// \brief Return true if the attribute is an integer attribute. + bool isIntAttribute() const; /// \brief Return true if the attribute is a string (target-dependent) /// attribute. @@ -175,6 +181,10 @@ public: /// alignment value. unsigned getStackAlignment() const; + /// \brief Returns the number of dereferenceable bytes from the + /// dereferenceable attribute (or zero if unknown). + uint64_t getDereferenceableBytes() const; + /// \brief The Attribute is converted to a string of equivalent mnemonic. This /// is, presumably, for writing out the mnemonics for the assembly writer. std::string getAsString(bool InAttrGrp = false) const; @@ -201,7 +211,7 @@ public: /// index `1'. class AttributeSet { public: - enum AttrIndex LLVM_ENUM_INT_TYPE(unsigned) { + enum AttrIndex : unsigned { ReturnIndex = 0U, FunctionIndex = ~0U }; @@ -231,7 +241,7 @@ private: explicit AttributeSet(AttributeSetImpl *LI) : pImpl(LI) {} public: - AttributeSet() : pImpl(0) {} + AttributeSet() : pImpl(nullptr) {} //===--------------------------------------------------------------------===// // AttributeSet Construction and Mutation @@ -241,7 +251,7 @@ public: static AttributeSet get(LLVMContext &C, ArrayRef<AttributeSet> Attrs); static AttributeSet get(LLVMContext &C, unsigned Index, ArrayRef<Attribute::AttrKind> Kind); - static AttributeSet get(LLVMContext &C, unsigned Index, AttrBuilder &B); + static AttributeSet get(LLVMContext &C, unsigned Index, const AttrBuilder &B); /// \brief Add an attribute to the attribute set at the given index. Since /// attribute sets are immutable, this returns a new set. @@ -313,6 +323,9 @@ public: /// \brief Get the stack alignment. unsigned getStackAlignment(unsigned Index) const; + /// \brief Get the number of dereferenceable bytes (or zero if unknown). + uint64_t getDereferenceableBytes(unsigned Index) const; + /// \brief Return the attributes at the index as a string. std::string getAsString(unsigned Index, bool InAttrGrp = false) const; @@ -392,20 +405,18 @@ class AttrBuilder { std::map<std::string, std::string> TargetDepAttrs; uint64_t Alignment; uint64_t StackAlignment; + uint64_t DerefBytes; public: - AttrBuilder() : Attrs(0), Alignment(0), StackAlignment(0) {} + AttrBuilder() : Attrs(0), Alignment(0), StackAlignment(0), DerefBytes(0) {} explicit AttrBuilder(uint64_t Val) - : Attrs(0), Alignment(0), StackAlignment(0) { + : Attrs(0), Alignment(0), StackAlignment(0), DerefBytes(0) { addRawValue(Val); } - AttrBuilder(const Attribute &A) : Attrs(0), Alignment(0), StackAlignment(0) { + AttrBuilder(const Attribute &A) + : Attrs(0), Alignment(0), StackAlignment(0), DerefBytes(0) { addAttribute(A); } AttrBuilder(AttributeSet AS, unsigned Idx); - AttrBuilder(const AttrBuilder &B) - : Attrs(B.Attrs), - TargetDepAttrs(B.TargetDepAttrs.begin(), B.TargetDepAttrs.end()), - Alignment(B.Alignment), StackAlignment(B.StackAlignment) {} void clear(); @@ -456,6 +467,10 @@ public: /// \brief Retrieve the stack alignment attribute, if it exists. uint64_t getStackAlignment() const { return StackAlignment; } + /// \brief Retrieve the number of dereferenceable bytes, if the dereferenceable + /// attribute exists (zero is returned otherwise). + uint64_t getDereferenceableBytes() const { return DerefBytes; } + /// \brief This turns an int alignment (which must be a power of 2) into the /// form used internally in Attribute. AttrBuilder &addAlignmentAttr(unsigned Align); @@ -464,6 +479,10 @@ public: /// the form used internally in Attribute. AttrBuilder &addStackAlignmentAttr(unsigned Align); + /// \brief This turns the number of dereferenceable bytes into the form used + /// internally in Attribute. + AttrBuilder &addDereferenceableAttr(uint64_t Bytes); + /// \brief Return true if the builder contains no target-independent /// attributes. bool empty() const { return Attrs.none(); } @@ -472,6 +491,8 @@ public: typedef std::pair<std::string, std::string> td_type; typedef std::map<std::string, std::string>::iterator td_iterator; typedef std::map<std::string, std::string>::const_iterator td_const_iterator; + typedef llvm::iterator_range<td_iterator> td_range; + typedef llvm::iterator_range<td_const_iterator> td_const_range; td_iterator td_begin() { return TargetDepAttrs.begin(); } td_iterator td_end() { return TargetDepAttrs.end(); } @@ -479,6 +500,11 @@ public: td_const_iterator td_begin() const { return TargetDepAttrs.begin(); } td_const_iterator td_end() const { return TargetDepAttrs.end(); } + td_range td_attrs() { return td_range(td_begin(), td_end()); } + td_const_range td_attrs() const { + return td_const_range(td_begin(), td_end()); + } + bool td_empty() const { return TargetDepAttrs.empty(); } bool operator==(const AttrBuilder &B); |