#define LLVM_IR_ATTRIBUTES_H
#include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/DenseSet.h"
-#include "llvm/Support/MathExtras.h"
+#include "llvm/ADT/FoldingSet.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/PointerLikeTypeTraits.h"
+#include <bitset>
#include <cassert>
+#include <map>
#include <string>
namespace llvm {
class AttrBuilder;
class AttributeImpl;
+class AttributeSetImpl;
+class AttributeSetNode;
class Constant;
+template<typename T> struct DenseMapInfo;
class LLVMContext;
class Type;
class Attribute {
public:
/// This enumeration lists the attributes that can be associated with
- /// parameters, function results or the function itself.
+ /// parameters, function results, or the function itself.
///
- /// Note: uwtable is about the ABI or the user mandating an entry in the
- /// unwind table. The nounwind attribute is about an exception passing by the
- /// function.
+ /// Note: The `uwtable' attribute is about the ABI or the user mandating an
+ /// entry in the unwind table. The `nounwind' attribute is about an exception
+ /// passing by the function.
///
- /// In a theoretical system that uses tables for profiling and sjlj for
+ /// In a theoretical system that uses tables for profiling and SjLj for
/// exceptions, they would be fully independent. In a normal system that uses
/// tables for both, the semantics are:
///
enum AttrKind {
// IR-Level Attributes
None, ///< No attributes have been set
- AddressSafety, ///< Address safety checking is on.
- Alignment, ///< Alignment of parameter (5 bits)
- ///< stored as log2 of alignment with +1 bias
- ///< 0 means unaligned (different from align(1))
- AlwaysInline, ///< inline=always
- ByVal, ///< Pass structure by value
- InlineHint, ///< Source said inlining was desirable
- InReg, ///< Force argument to be passed in register
- MinSize, ///< Function must be optimized for size first
- Naked, ///< Naked function
- Nest, ///< Nested function static chain
- NoAlias, ///< Considered to not alias after call
- NoCapture, ///< Function creates no aliases of pointer
- NoDuplicate, ///< Call cannot be duplicated
- NoImplicitFloat, ///< Disable implicit floating point insts
- NoInline, ///< inline=never
- NonLazyBind, ///< Function is called early and/or
- ///< often, so lazy binding isn't worthwhile
- NoRedZone, ///< Disable redzone
- NoReturn, ///< Mark the function as not returning
- NoUnwind, ///< Function doesn't unwind stack
- OptimizeForSize, ///< opt_size
- ReadNone, ///< Function does not access memory
- ReadOnly, ///< Function only reads from memory
- ReturnsTwice, ///< Function can return twice
- SExt, ///< Sign extended before/after call
- StackAlignment, ///< Alignment of stack for function (3 bits)
- ///< stored as log2 of alignment with +1 bias 0
- ///< means unaligned (different from
- ///< alignstack=(1))
- StackProtect, ///< Stack protection.
- StackProtectReq, ///< Stack protection required.
- StructRet, ///< Hidden pointer to structure to return
- UWTable, ///< Function must be in a unwind table
- ZExt, ///< Zero extended before/after call
-
- EndAttrKinds, ///< Sentinal value useful for loops
-
- AttrKindEmptyKey, ///< Empty key value for DenseMapInfo
- AttrKindTombstoneKey ///< Tombstone key value for DenseMapInfo
+ #define GET_ATTR_ENUM
+ #include "llvm/IR/Attributes.inc"
+ EndAttrKinds ///< Sentinal value useful for loops
};
+
private:
AttributeImpl *pImpl;
Attribute(AttributeImpl *A) : pImpl(A) {}
+
public:
- Attribute() : pImpl(0) {}
+ Attribute() : pImpl(nullptr) {}
+
+ //===--------------------------------------------------------------------===//
+ // Attribute Construction
+ //===--------------------------------------------------------------------===//
+
+ /// \brief Return a uniquified Attribute object.
+ static Attribute get(LLVMContext &Context, AttrKind Kind, uint64_t Val = 0);
+ static Attribute get(LLVMContext &Context, StringRef Kind,
+ StringRef Val = StringRef());
+
+ /// \brief Return a uniquified Attribute object that has the specific
+ /// 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);
+ static Attribute getWithDereferenceableOrNullBytes(LLVMContext &Context,
+ uint64_t Bytes);
+
+ //===--------------------------------------------------------------------===//
+ // Attribute Accessors
+ //===--------------------------------------------------------------------===//
+
+ /// \brief Return true if the attribute is an Attribute::AttrKind type.
+ bool isEnumAttribute() const;
+
+ /// \brief Return true if the attribute is an integer attribute.
+ bool isIntAttribute() const;
- /// \brief Return a uniquified Attribute object. This takes the uniquified
- /// value from the Builder and wraps it in the Attribute class.
- static Attribute get(LLVMContext &Context, ArrayRef<AttrKind> Vals);
- static Attribute get(LLVMContext &Context, AttrBuilder &B);
+ /// \brief Return true if the attribute is a string (target-dependent)
+ /// attribute.
+ bool isStringAttribute() const;
/// \brief Return true if the attribute is present.
bool hasAttribute(AttrKind Val) const;
- /// \brief Return true if attributes exist
- bool hasAttributes() const;
+ /// \brief Return true if the target-dependent attribute is present.
+ bool hasAttribute(StringRef Val) const;
+
+ /// \brief Return the attribute's kind as an enum (Attribute::AttrKind). This
+ /// requires the attribute to be an enum or alignment attribute.
+ Attribute::AttrKind getKindAsEnum() const;
+
+ /// \brief Return the attribute's value as an integer. This requires that the
+ /// attribute be an alignment attribute.
+ uint64_t getValueAsInt() const;
+
+ /// \brief Return the attribute's kind as a string. This requires the
+ /// attribute to be a string attribute.
+ StringRef getKindAsString() const;
+
+ /// \brief Return the attribute's value as a string. This requires the
+ /// attribute to be a string attribute.
+ StringRef getValueAsString() const;
/// \brief Returns the alignment field of an attribute as a byte alignment
/// value.
unsigned getAlignment() const;
- /// \brief Set the alignment field of an attribute.
- void setAlignment(unsigned Align);
-
/// \brief Returns the stack alignment field of an attribute as a byte
/// alignment value.
unsigned getStackAlignment() const;
- /// \brief Set the stack alignment field of an attribute.
- void setStackAlignment(unsigned Align);
-
- /// \brief Equality and non-equality query methods.
- bool operator==(AttrKind K) const;
- bool operator!=(AttrKind K) const;
-
- // FIXME: Remove these 'operator' methods.
- bool operator==(const Attribute &A) const {
- return pImpl == A.pImpl;
- }
- bool operator!=(const Attribute &A) const {
- return pImpl != A.pImpl;
- }
-
- uint64_t Raw() const;
-
- /// \brief Which attributes cannot be applied to a type.
- static Attribute typeIncompatible(Type *Ty);
+ /// \brief Returns the number of dereferenceable bytes from the
+ /// dereferenceable attribute (or zero if unknown).
+ uint64_t getDereferenceableBytes() const;
- /// \brief This returns an integer containing an encoding of all the LLVM
- /// attributes found in the given attribute bitset. Any change to this
- /// encoding is a breaking change to bitcode compatibility.
- static uint64_t encodeLLVMAttributesForBitcode(Attribute Attrs);
-
- /// \brief This returns an attribute bitset containing the LLVM attributes
- /// that have been decoded from the given integer. This function must stay in
- /// sync with 'encodeLLVMAttributesForBitcode'.
- static Attribute decodeLLVMAttributesForBitcode(LLVMContext &C,
- uint64_t EncodedAttrs);
+ /// \brief Returns the number of dereferenceable_or_null bytes from the
+ /// dereferenceable_or_null attribute (or zero if unknown).
+ uint64_t getDereferenceableOrNullBytes() 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() const;
-};
+ std::string getAsString(bool InAttrGrp = false) const;
-//===----------------------------------------------------------------------===//
-/// \class
-/// \brief Provide DenseMapInfo for Attribute::AttrKinds. This is used by
-/// AttrBuilder.
-template<> struct DenseMapInfo<Attribute::AttrKind> {
- static inline Attribute::AttrKind getEmptyKey() {
- return Attribute::AttrKindEmptyKey;
- }
- static inline Attribute::AttrKind getTombstoneKey() {
- return Attribute::AttrKindTombstoneKey;
- }
- static unsigned getHashValue(const Attribute::AttrKind &Val) {
- return Val * 37U;
- }
- static bool isEqual(const Attribute::AttrKind &LHS,
- const Attribute::AttrKind &RHS) {
- return LHS == RHS;
- }
-};
+ /// \brief Equality and non-equality operators.
+ bool operator==(Attribute A) const { return pImpl == A.pImpl; }
+ bool operator!=(Attribute A) const { return pImpl != A.pImpl; }
-//===----------------------------------------------------------------------===//
-// AttributeSet Smart Pointer
-//===----------------------------------------------------------------------===//
+ /// \brief Less-than operator. Useful for sorting the attributes list.
+ bool operator<(Attribute A) const;
-class AttrBuilder;
-class AttributeSetImpl;
-struct AttributeWithIndex;
+ void Profile(FoldingSetNodeID &ID) const {
+ ID.AddPointer(pImpl);
+ }
+};
//===----------------------------------------------------------------------===//
/// \class
-/// \brief This class manages the ref count for the opaque AttributeSetImpl
-/// object and provides accessors for it.
+/// \brief This class holds the attributes for a function, its return value, and
+/// its parameters. You access the attributes for each of them via an index into
+/// the AttributeSet object. The function attributes are at index
+/// `AttributeSet::FunctionIndex', the return value is at index
+/// `AttributeSet::ReturnIndex', and the attributes for the parameters start at
+/// index `1'.
class AttributeSet {
public:
- enum AttrIndex {
+ enum AttrIndex : unsigned {
ReturnIndex = 0U,
FunctionIndex = ~0U
};
+
private:
friend class AttrBuilder;
+ friend class AttributeSetImpl;
+ template <typename Ty> friend struct DenseMapInfo;
- /// \brief The attributes that we are managing. This can be null to represent
+ /// \brief The attributes that we are managing. This can be null to represent
/// the empty attributes list.
- AttributeSetImpl *AttrList;
+ AttributeSetImpl *pImpl;
- /// \brief The attributes for the specified index are returned. Attributes
- /// for the result are denoted with Idx = 0.
- Attribute getAttributes(unsigned Idx) const;
+ /// \brief The attributes for the specified index are returned.
+ AttributeSetNode *getAttributes(unsigned Index) const;
- /// \brief Add the specified attribute at the specified index to this
- /// attribute list. Since attribute lists are immutable, this returns the new
- /// list.
- AttributeSet addAttr(LLVMContext &C, unsigned Idx, Attribute Attrs) const;
+ /// \brief Create an AttributeSet with the specified parameters in it.
+ static AttributeSet get(LLVMContext &C,
+ ArrayRef<std::pair<unsigned, Attribute> > Attrs);
+ static AttributeSet get(LLVMContext &C,
+ ArrayRef<std::pair<unsigned,
+ AttributeSetNode*> > Attrs);
- /// \brief Remove the specified attribute at the specified index from this
- /// attribute list. Since attribute lists are immutable, this returns the new
- /// list.
- AttributeSet removeAttr(LLVMContext &C, unsigned Idx, Attribute Attrs) const;
+ static AttributeSet getImpl(LLVMContext &C,
+ ArrayRef<std::pair<unsigned,
+ AttributeSetNode*> > Attrs);
+
+ explicit AttributeSet(AttributeSetImpl *LI) : pImpl(LI) {}
- explicit AttributeSet(AttributeSetImpl *LI) : AttrList(LI) {}
public:
- AttributeSet() : AttrList(0) {}
- AttributeSet(const AttributeSet &P) : AttrList(P.AttrList) {}
- const AttributeSet &operator=(const AttributeSet &RHS);
+ AttributeSet() : pImpl(nullptr) {}
//===--------------------------------------------------------------------===//
- // Attribute List Construction and Mutation
+ // AttributeSet Construction and Mutation
//===--------------------------------------------------------------------===//
/// \brief Return an AttributeSet with the specified parameters in it.
- static AttributeSet get(LLVMContext &C, ArrayRef<AttributeWithIndex> Attrs);
- static AttributeSet get(LLVMContext &C, unsigned Idx,
- Attribute::AttrKind Kind);
- static AttributeSet get(LLVMContext &C, unsigned Idx, AttrBuilder &B);
+ 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, const AttrBuilder &B);
- /// \brief Add an attribute to the attribute set at the given index. Since
+ /// \brief Add an attribute to the attribute set at the given index. Because
/// attribute sets are immutable, this returns a new set.
- AttributeSet addAttribute(LLVMContext &C, unsigned Idx,
+ AttributeSet addAttribute(LLVMContext &C, unsigned Index,
Attribute::AttrKind Attr) const;
- /// \brief Add attributes to the attribute set at the given index. Since
+ /// \brief Add an attribute to the attribute set at the given index. Because
/// attribute sets are immutable, this returns a new set.
- AttributeSet addAttributes(LLVMContext &C, unsigned Idx,
- AttributeSet Attrs) const;
-
- /// \brief Add return attributes to this attribute set. Since attribute sets
- /// are immutable, this returns a new set.
- AttributeSet addRetAttributes(LLVMContext &C, AttributeSet Attrs) const {
- return addAttributes(C, ReturnIndex, Attrs);
- }
+ AttributeSet addAttribute(LLVMContext &C, unsigned Index,
+ StringRef Kind) const;
+ AttributeSet addAttribute(LLVMContext &C, unsigned Index,
+ StringRef Kind, StringRef Value) const;
- /// \brief Add function attributes to this attribute set. Since attribute sets
- /// are immutable, this returns a new set.
- AttributeSet addFnAttributes(LLVMContext &C, AttributeSet Attrs) const {
- return addAttributes(C, FunctionIndex, Attrs);
- }
+ /// \brief Add attributes to the attribute set at the given index. Because
+ /// attribute sets are immutable, this returns a new set.
+ AttributeSet addAttributes(LLVMContext &C, unsigned Index,
+ AttributeSet Attrs) const;
/// \brief Remove the specified attribute at the specified index from this
- /// attribute list. Since attribute lists are immutable, this returns the new
- /// list.
- AttributeSet removeAttribute(LLVMContext &C, unsigned Idx,
+ /// attribute list. Because attribute lists are immutable, this returns the
+ /// new list.
+ AttributeSet removeAttribute(LLVMContext &C, unsigned Index,
Attribute::AttrKind Attr) const;
/// \brief Remove the specified attributes at the specified index from this
- /// attribute list. Since attribute lists are immutable, this returns the new
- /// list.
- AttributeSet removeAttributes(LLVMContext &C, unsigned Idx,
+ /// attribute list. Because attribute lists are immutable, this returns the
+ /// new list.
+ AttributeSet removeAttributes(LLVMContext &C, unsigned Index,
AttributeSet Attrs) const;
+ /// \brief Remove the specified attributes at the specified index from this
+ /// attribute list. Because attribute lists are immutable, this returns the
+ /// new list.
+ AttributeSet removeAttributes(LLVMContext &C, unsigned Index,
+ const AttrBuilder &Attrs) const;
+
+ /// \brief Add the dereferenceable attribute to the attribute set at the given
+ /// index. Because attribute sets are immutable, this returns a new set.
+ AttributeSet addDereferenceableAttr(LLVMContext &C, unsigned Index,
+ uint64_t Bytes) const;
+
+ /// \brief Add the dereferenceable_or_null attribute to the attribute set at
+ /// the given index. Because attribute sets are immutable, this returns a new
+ /// set.
+ AttributeSet addDereferenceableOrNullAttr(LLVMContext &C, unsigned Index,
+ uint64_t Bytes) const;
+
//===--------------------------------------------------------------------===//
- // Attribute List Accessors
+ // AttributeSet Accessors
//===--------------------------------------------------------------------===//
+ /// \brief Retrieve the LLVM context.
+ LLVMContext &getContext() const;
+
/// \brief The attributes for the specified index are returned.
- AttributeSet getParamAttributes(unsigned Idx) const;
+ AttributeSet getParamAttributes(unsigned Index) const;
/// \brief The attributes for the ret value are returned.
AttributeSet getRetAttributes() const;
/// \brief The function attributes are returned.
AttributeSet getFnAttributes() const;
- /// \brief Return the alignment for the specified function parameter.
- unsigned getParamAlignment(unsigned Idx) const;
-
/// \brief Return true if the attribute exists at the given index.
bool hasAttribute(unsigned Index, Attribute::AttrKind Kind) const;
+ /// \brief Return true if the attribute exists at the given index.
+ bool hasAttribute(unsigned Index, StringRef Kind) const;
+
/// \brief Return true if attribute exists at the given index.
bool hasAttributes(unsigned Index) const;
+ /// \brief Return true if the specified attribute is set for at least one
+ /// parameter or for the return value.
+ bool hasAttrSomewhere(Attribute::AttrKind Attr) const;
+
+ /// \brief Return the attribute object that exists at the given index.
+ Attribute getAttribute(unsigned Index, Attribute::AttrKind Kind) const;
+
+ /// \brief Return the attribute object that exists at the given index.
+ Attribute getAttribute(unsigned Index, StringRef Kind) const;
+
+ /// \brief Return the alignment for the specified function parameter.
+ unsigned getParamAlignment(unsigned Index) const;
+
/// \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 Get the number of dereferenceable_or_null bytes (or zero if
+ /// unknown).
+ uint64_t getDereferenceableOrNullBytes(unsigned Index) const;
+
/// \brief Return the attributes at the index as a string.
- std::string getAsString(unsigned Index) const;
+ std::string getAsString(unsigned Index, bool InAttrGrp = false) const;
- uint64_t Raw(unsigned Index) const;
+ typedef ArrayRef<Attribute>::iterator iterator;
- /// \brief Return true if the specified attribute is set for at least one
- /// parameter or for the return value.
- bool hasAttrSomewhere(Attribute::AttrKind Attr) const;
+ iterator begin(unsigned Slot) const;
+ iterator end(unsigned Slot) const;
/// operator==/!= - Provide equality predicates.
bool operator==(const AttributeSet &RHS) const {
- return AttrList == RHS.AttrList;
+ return pImpl == RHS.pImpl;
}
bool operator!=(const AttributeSet &RHS) const {
- return AttrList != RHS.AttrList;
+ return pImpl != RHS.pImpl;
}
//===--------------------------------------------------------------------===//
- // Attribute List Introspection
+ // AttributeSet Introspection
//===--------------------------------------------------------------------===//
+ // FIXME: Remove this.
+ uint64_t Raw(unsigned Index) const;
+
/// \brief Return a raw pointer that uniquely identifies this attribute list.
void *getRawPointer() const {
- return AttrList;
+ return pImpl;
}
- // Attributes are stored as a dense set of slots, where there is one slot for
- // each argument that has an attribute. This allows walking over the dense
- // set instead of walking the sparse list of attributes.
-
/// \brief Return true if there are no attributes.
bool isEmpty() const {
- return AttrList == 0;
+ return getNumSlots() == 0;
}
/// \brief Return the number of slots used in this attribute list. This is
/// function itself).
unsigned getNumSlots() const;
- /// \brief Return the AttributeWithIndex at the specified slot. This holds a
- /// index number plus a set of attributes.
- const AttributeWithIndex &getSlot(unsigned Slot) const;
+ /// \brief Return the index for the given slot.
+ unsigned getSlotIndex(unsigned Slot) const;
+
+ /// \brief Return the attributes at the given slot.
+ AttributeSet getSlotAttributes(unsigned Slot) const;
void dump() const;
};
//===----------------------------------------------------------------------===//
/// \class
-/// \brief This is just a pair of values to associate a set of attributes with
-/// an index.
-struct AttributeWithIndex {
- Attribute Attrs; ///< The attributes that are set, or'd together.
- Constant *Val; ///< Value attached to attribute, e.g. alignment.
- unsigned Index; ///< Index of the parameter for which the attributes apply.
- ///< Index 0 is used for return value attributes.
- ///< Index ~0U is used for function attributes.
-
- // FIXME: These methods all need to be revised. The first one is temporary.
- static AttributeWithIndex get(LLVMContext &C, unsigned Idx, AttributeSet AS);
- static AttributeWithIndex get(LLVMContext &C, unsigned Idx,
- ArrayRef<Attribute::AttrKind> Attrs) {
- return get(Idx, Attribute::get(C, Attrs));
+/// \brief Provide DenseMapInfo for AttributeSet.
+template<> struct DenseMapInfo<AttributeSet> {
+ static inline AttributeSet getEmptyKey() {
+ uintptr_t Val = static_cast<uintptr_t>(-1);
+ Val <<= PointerLikeTypeTraits<void*>::NumLowBitsAvailable;
+ return AttributeSet(reinterpret_cast<AttributeSetImpl*>(Val));
}
- static AttributeWithIndex get(unsigned Idx, Attribute Attrs) {
- AttributeWithIndex P;
- P.Index = Idx;
- P.Attrs = Attrs;
- P.Val = 0;
- return P;
+ static inline AttributeSet getTombstoneKey() {
+ uintptr_t Val = static_cast<uintptr_t>(-2);
+ Val <<= PointerLikeTypeTraits<void*>::NumLowBitsAvailable;
+ return AttributeSet(reinterpret_cast<AttributeSetImpl*>(Val));
}
- static AttributeWithIndex get(unsigned Idx, Attribute Attrs, Constant *Val) {
- AttributeWithIndex P;
- P.Index = Idx;
- P.Attrs = Attrs;
- P.Val = Val;
- return P;
+ static unsigned getHashValue(AttributeSet AS) {
+ return (unsigned((uintptr_t)AS.pImpl) >> 4) ^
+ (unsigned((uintptr_t)AS.pImpl) >> 9);
}
+ static bool isEqual(AttributeSet LHS, AttributeSet RHS) { return LHS == RHS; }
};
//===----------------------------------------------------------------------===//
/// value, however, is not. So this can be used as a quick way to test for
/// equality, presence of attributes, etc.
class AttrBuilder {
- DenseSet<Attribute::AttrKind> Attrs;
+ std::bitset<Attribute::EndAttrKinds> Attrs;
+ std::map<std::string, std::string> TargetDepAttrs;
uint64_t Alignment;
uint64_t StackAlignment;
+ uint64_t DerefBytes;
+ uint64_t DerefOrNullBytes;
+
public:
- AttrBuilder() : Alignment(0), StackAlignment(0) {}
- explicit AttrBuilder(uint64_t B) : Alignment(0), StackAlignment(0) {
- addRawValue(B);
+ AttrBuilder()
+ : Attrs(0), Alignment(0), StackAlignment(0), DerefBytes(0),
+ DerefOrNullBytes(0) {}
+ explicit AttrBuilder(uint64_t Val)
+ : Attrs(0), Alignment(0), StackAlignment(0), DerefBytes(0),
+ DerefOrNullBytes(0) {
+ addRawValue(Val);
}
- AttrBuilder(const Attribute &A) : Alignment(0), StackAlignment(0) {
- addAttributes(A);
+ AttrBuilder(const Attribute &A)
+ : Attrs(0), Alignment(0), StackAlignment(0), DerefBytes(0),
+ DerefOrNullBytes(0) {
+ addAttribute(A);
}
AttrBuilder(AttributeSet AS, unsigned Idx);
/// \brief Add an attribute to the builder.
AttrBuilder &addAttribute(Attribute::AttrKind Val);
+ /// \brief Add the Attribute object to the builder.
+ AttrBuilder &addAttribute(Attribute A);
+
+ /// \brief Add the target-dependent attribute to the builder.
+ AttrBuilder &addAttribute(StringRef A, StringRef V = StringRef());
+
/// \brief Remove an attribute from the builder.
AttrBuilder &removeAttribute(Attribute::AttrKind Val);
- /// \brief Add the attributes from A to the builder.
- AttrBuilder &addAttributes(const Attribute &A);
+ /// \brief Remove the attributes from the builder.
+ AttrBuilder &removeAttributes(AttributeSet A, uint64_t Index);
+
+ /// \brief Remove the target-dependent attribute to the builder.
+ AttrBuilder &removeAttribute(StringRef A);
+
+ /// \brief Add the attributes from the builder.
+ AttrBuilder &merge(const AttrBuilder &B);
- /// \brief Remove the attributes from A from the builder.
- AttrBuilder &removeAttributes(const Attribute &A);
+ /// \brief Remove the attributes from the builder.
+ AttrBuilder &remove(const AttrBuilder &B);
+
+ /// \brief Return true if the builder has any attribute that's in the
+ /// specified builder.
+ bool overlaps(const AttrBuilder &B) const;
/// \brief Return true if the builder has the specified attribute.
- bool contains(Attribute::AttrKind A) const;
+ bool contains(Attribute::AttrKind A) const {
+ assert((unsigned)A < Attribute::EndAttrKinds && "Attribute out of range!");
+ return Attrs[A];
+ }
+
+ /// \brief Return true if the builder has the specified target-dependent
+ /// attribute.
+ bool contains(StringRef A) const;
/// \brief Return true if the builder has IR-level attributes.
bool hasAttributes() const;
/// \brief Return true if the builder has any attribute that's in the
/// specified attribute.
- bool hasAttributes(const Attribute &A) const;
+ bool hasAttributes(AttributeSet A, uint64_t Index) const;
/// \brief Return true if the builder has an alignment attribute.
bool hasAlignmentAttr() const;
/// \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 Retrieve the number of dereferenceable_or_null bytes, if the
+ /// dereferenceable_or_null attribute exists (zero is returned otherwise).
+ uint64_t getDereferenceableOrNullBytes() const { return DerefOrNullBytes; }
+
/// \brief This turns an int alignment (which must be a power of 2) into the
/// form used internally in Attribute.
AttrBuilder &addAlignmentAttr(unsigned Align);
/// the form used internally in Attribute.
AttrBuilder &addStackAlignmentAttr(unsigned Align);
- typedef DenseSet<Attribute::AttrKind>::iterator iterator;
- typedef DenseSet<Attribute::AttrKind>::const_iterator const_iterator;
+ /// \brief This turns the number of dereferenceable bytes into the form used
+ /// internally in Attribute.
+ AttrBuilder &addDereferenceableAttr(uint64_t Bytes);
- iterator begin() { return Attrs.begin(); }
- iterator end() { return Attrs.end(); }
+ /// \brief This turns the number of dereferenceable_or_null bytes into the
+ /// form used internally in Attribute.
+ AttrBuilder &addDereferenceableOrNullAttr(uint64_t Bytes);
- const_iterator begin() const { return Attrs.begin(); }
- const_iterator end() const { return Attrs.end(); }
+ /// \brief Return true if the builder contains no target-independent
+ /// attributes.
+ bool empty() const { return Attrs.none(); }
- /// \brief Add the raw value to the internal representation.
- ///
- /// N.B. This should be used ONLY for decoding LLVM bitcode!
- AttrBuilder &addRawValue(uint64_t Val);
+ // Iterators for target-dependent attributes.
+ 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;
- /// \brief Remove attributes that are used on functions only.
- void removeFunctionOnlyAttrs() {
- removeAttribute(Attribute::NoReturn)
- .removeAttribute(Attribute::NoUnwind)
- .removeAttribute(Attribute::ReadNone)
- .removeAttribute(Attribute::ReadOnly)
- .removeAttribute(Attribute::NoInline)
- .removeAttribute(Attribute::AlwaysInline)
- .removeAttribute(Attribute::OptimizeForSize)
- .removeAttribute(Attribute::StackProtect)
- .removeAttribute(Attribute::StackProtectReq)
- .removeAttribute(Attribute::NoRedZone)
- .removeAttribute(Attribute::NoImplicitFloat)
- .removeAttribute(Attribute::Naked)
- .removeAttribute(Attribute::InlineHint)
- .removeAttribute(Attribute::StackAlignment)
- .removeAttribute(Attribute::UWTable)
- .removeAttribute(Attribute::NonLazyBind)
- .removeAttribute(Attribute::ReturnsTwice)
- .removeAttribute(Attribute::AddressSafety)
- .removeAttribute(Attribute::MinSize)
- .removeAttribute(Attribute::NoDuplicate);
+ td_iterator td_begin() { return TargetDepAttrs.begin(); }
+ td_iterator td_end() { return TargetDepAttrs.end(); }
+
+ 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());
}
- uint64_t Raw() const;
+ bool td_empty() const { return TargetDepAttrs.empty(); }
bool operator==(const AttrBuilder &B);
bool operator!=(const AttrBuilder &B) {
return !(*this == B);
}
+
+ // FIXME: Remove this in 4.0.
+
+ /// \brief Add the raw value to the internal representation.
+ AttrBuilder &addRawValue(uint64_t Val);
};
+namespace AttributeFuncs {
+
+/// \brief Which attributes cannot be applied to a type.
+AttrBuilder typeIncompatible(Type *Ty);
+
+} // end AttributeFuncs namespace
+
} // end llvm namespace
#endif