#include "llvm/AbstractTypeUser.h"
#include "llvm/Use.h"
#include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/Twine.h"
#include "llvm/Support/Casting.h"
#include <string>
class AssemblyAnnotationWriter;
class ValueHandleBase;
class LLVMContext;
-class MetadataContextImpl;
+class Twine;
+class MDNode;
//===----------------------------------------------------------------------===//
// Value Class
///
/// Every value has a "use list" that keeps track of which other Values are
/// using this Value. A Value can also have an arbitrary number of ValueHandle
-/// objects that watch it and listen to RAUW and Destroy events see
+/// objects that watch it and listen to RAUW and Destroy events. See
/// llvm/Support/ValueHandle.h for details.
///
/// @brief LLVM Value Representation
/// interpretation.
unsigned char SubclassOptionalData : 7;
+private:
/// SubclassData - This member is defined by this class, but is not used for
/// anything. Subclasses can use it to hold whatever state they find useful.
/// This field is initialized to zero by the ctor.
unsigned short SubclassData;
-private:
+
PATypeHolder VTy;
Use *UseList;
/// printing behavior.
virtual void printCustom(raw_ostream &O) const;
-public:
Value(const Type *Ty, unsigned scid);
+public:
virtual ~Value();
/// dump - Support for debugging, callable in GDB: V->dump()
// Methods for handling the chain of uses of this Value.
//
typedef value_use_iterator<User> use_iterator;
- typedef value_use_iterator<const User> use_const_iterator;
+ typedef value_use_iterator<const User> const_use_iterator;
bool use_empty() const { return UseList == 0; }
use_iterator use_begin() { return use_iterator(UseList); }
- use_const_iterator use_begin() const { return use_const_iterator(UseList); }
+ const_use_iterator use_begin() const { return const_use_iterator(UseList); }
use_iterator use_end() { return use_iterator(0); }
- use_const_iterator use_end() const { return use_const_iterator(0); }
+ const_use_iterator use_end() const { return const_use_iterator(0); }
User *use_back() { return *use_begin(); }
const User *use_back() const { return *use_begin(); }
/// traversing the whole use list.
///
bool hasOneUse() const {
- use_const_iterator I = use_begin(), E = use_end();
+ const_use_iterator I = use_begin(), E = use_end();
if (I == E) return false;
return ++I == E;
}
UndefValueVal, // This is an instance of UndefValue
BlockAddressVal, // This is an instance of BlockAddress
ConstantExprVal, // This is an instance of ConstantExpr
- ConstantAggregateZeroVal, // This is an instance of ConstantAggregateNull
+ ConstantAggregateZeroVal, // This is an instance of ConstantAggregateZero
ConstantIntVal, // This is an instance of ConstantInt
ConstantFPVal, // This is an instance of ConstantFP
ConstantArrayVal, // This is an instance of ConstantArray
ConstantStructVal, // This is an instance of ConstantStruct
+ ConstantUnionVal, // This is an instance of ConstantUnion
ConstantVectorVal, // This is an instance of ConstantVector
ConstantPointerNullVal, // This is an instance of ConstantPointerNull
MDNodeVal, // This is an instance of MDNode
MDStringVal, // This is an instance of MDString
- NamedMDNodeVal, // This is an instance of NamedMDNode
InlineAsmVal, // This is an instance of InlineAsm
PseudoSourceValueVal, // This is an instance of PseudoSourceValue
FixedStackPseudoSourceValueVal, // This is an instance of
SubclassOptionalData &= V->SubclassOptionalData;
}
+ /// hasValueHandle - Return true if there is a value handle associated with
+ /// this value.
+ bool hasValueHandle() const { return HasValueHandle; }
+
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const Value *) {
return true; // Values are always values.
/// getUnderlyingObject - This method strips off any GEP address adjustments
/// and pointer casts from the specified value, returning the original object
/// being addressed. Note that the returned value has pointer type if the
- /// specified value does.
- Value *getUnderlyingObject();
- const Value *getUnderlyingObject() const {
- return const_cast<Value*>(this)->getUnderlyingObject();
+ /// specified value does. If the MaxLookup value is non-zero, it limits the
+ /// number of instructions to be stripped off.
+ Value *getUnderlyingObject(unsigned MaxLookup = 6);
+ const Value *getUnderlyingObject(unsigned MaxLookup = 6) const {
+ return const_cast<Value*>(this)->getUnderlyingObject(MaxLookup);
}
/// DoPHITranslation - If this value is a PHI node with CurBB as its parent,
const BasicBlock *PredBB) const{
return const_cast<Value*>(this)->DoPHITranslation(CurBB, PredBB);
}
+
+ /// MaximumAlignment - This is the greatest alignment value supported by
+ /// load, store, and alloca instructions, and global values.
+ static const unsigned MaximumAlignment = 1u << 29;
+
+protected:
+ unsigned short getSubclassDataFromValue() const { return SubclassData; }
+ void setValueSubclassData(unsigned short D) { SubclassData = D; }
};
inline raw_ostream &operator<<(raw_ostream &OS, const Value &V) {
// isa - Provide some specializations of isa so that we don't have to include
// the subtype header files to test to see if the value is a subclass...
//
-template <> inline bool isa_impl<Constant, Value>(const Value &Val) {
- return Val.getValueID() >= Value::ConstantFirstVal &&
- Val.getValueID() <= Value::ConstantLastVal;
-}
-template <> inline bool isa_impl<Argument, Value>(const Value &Val) {
- return Val.getValueID() == Value::ArgumentVal;
-}
-template <> inline bool isa_impl<InlineAsm, Value>(const Value &Val) {
- return Val.getValueID() == Value::InlineAsmVal;
-}
-template <> inline bool isa_impl<Instruction, Value>(const Value &Val) {
- return Val.getValueID() >= Value::InstructionVal;
-}
-template <> inline bool isa_impl<BasicBlock, Value>(const Value &Val) {
- return Val.getValueID() == Value::BasicBlockVal;
-}
-template <> inline bool isa_impl<Function, Value>(const Value &Val) {
- return Val.getValueID() == Value::FunctionVal;
-}
-template <> inline bool isa_impl<GlobalVariable, Value>(const Value &Val) {
- return Val.getValueID() == Value::GlobalVariableVal;
-}
-template <> inline bool isa_impl<GlobalAlias, Value>(const Value &Val) {
- return Val.getValueID() == Value::GlobalAliasVal;
-}
-template <> inline bool isa_impl<GlobalValue, Value>(const Value &Val) {
- return isa<GlobalVariable>(Val) || isa<Function>(Val) ||
- isa<GlobalAlias>(Val);
-}
-
+template <> struct isa_impl<Constant, Value> {
+ static inline bool doit(const Value &Val) {
+ return Val.getValueID() >= Value::ConstantFirstVal &&
+ Val.getValueID() <= Value::ConstantLastVal;
+ }
+};
+
+template <> struct isa_impl<Argument, Value> {
+ static inline bool doit (const Value &Val) {
+ return Val.getValueID() == Value::ArgumentVal;
+ }
+};
+
+template <> struct isa_impl<InlineAsm, Value> {
+ static inline bool doit(const Value &Val) {
+ return Val.getValueID() == Value::InlineAsmVal;
+ }
+};
+
+template <> struct isa_impl<Instruction, Value> {
+ static inline bool doit(const Value &Val) {
+ return Val.getValueID() >= Value::InstructionVal;
+ }
+};
+
+template <> struct isa_impl<BasicBlock, Value> {
+ static inline bool doit(const Value &Val) {
+ return Val.getValueID() == Value::BasicBlockVal;
+ }
+};
+
+template <> struct isa_impl<Function, Value> {
+ static inline bool doit(const Value &Val) {
+ return Val.getValueID() == Value::FunctionVal;
+ }
+};
+
+template <> struct isa_impl<GlobalVariable, Value> {
+ static inline bool doit(const Value &Val) {
+ return Val.getValueID() == Value::GlobalVariableVal;
+ }
+};
+
+template <> struct isa_impl<GlobalAlias, Value> {
+ static inline bool doit(const Value &Val) {
+ return Val.getValueID() == Value::GlobalAliasVal;
+ }
+};
+
+template <> struct isa_impl<GlobalValue, Value> {
+ static inline bool doit(const Value &Val) {
+ return isa<GlobalVariable>(Val) || isa<Function>(Val) ||
+ isa<GlobalAlias>(Val);
+ }
+};
+
+template <> struct isa_impl<MDNode, Value> {
+ static inline bool doit(const Value &Val) {
+ return Val.getValueID() == Value::MDNodeVal;
+ }
+};
// Value* is only 4-byte aligned.
template<>
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