diff options
Diffstat (limited to 'include/llvm/IR/Attributes.h')
| -rw-r--r-- | include/llvm/IR/Attributes.h | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/include/llvm/IR/Attributes.h b/include/llvm/IR/Attributes.h index e34dc83..5ff48d6 100644 --- a/include/llvm/IR/Attributes.h +++ b/include/llvm/IR/Attributes.h @@ -88,6 +88,7 @@ public: 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 @@ -133,6 +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 @@ -141,8 +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. @@ -178,6 +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; @@ -316,6 +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; @@ -395,13 +405,15 @@ 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); @@ -455,6 +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); @@ -463,6 +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(); } |