#include "llvm/User.h"
namespace llvm {
+ template<typename T> class SmallVectorImpl;
/// This is an important base class in LLVM. It provides the common facilities
/// of all constant values in an LLVM program. A constant is a value that is
/// Note that Constants are immutable (once created they never change)
/// and are fully shared by structural equivalence. This means that two
/// structurally equivalent constants will always have the same address.
-/// Constant's are created on demand as needed and never deleted: thus clients
+/// Constants are created on demand as needed and never deleted: thus clients
/// don't have to worry about the lifetime of the objects.
/// @brief LLVM Constant Representation
class Constant : public User {
/// getNullValue.
virtual bool isNullValue() const = 0;
- virtual void print(std::ostream &O) const;
- void print(std::ostream *O) const { if (O) print(*O); }
-
/// canTrap - Return true if evaluation of this constant could trap. This is
/// true for things like constant expressions that could divide by zero.
bool canTrap() const;
/// relocations which cannot be resolved at compile time.
bool ContainsRelocations() const;
- // Specialize get/setOperand for Constant's as their operands are always
+ // Specialize get/setOperand for Constants as their operands are always
// constants as well.
Constant *getOperand(unsigned i) {
return static_cast<Constant*>(User::getOperand(i));
void setOperand(unsigned i, Constant *C) {
User::setOperand(i, C);
}
+
+ /// getVectorElements - This method, which is only valid on constant of vector
+ /// type, returns the elements of the vector in the specified smallvector.
+ /// This handles breaking down a vector undef into undef elements, etc. For
+ /// constant exprs and other cases we can't handle, we return an empty vector.
+ void getVectorElements(SmallVectorImpl<Constant*> &Elts) const;
/// destroyConstant - Called if some element of this constant is no longer
/// valid. At this point only other constants may be on the use_list for this