================
@@ -187,80 +187,132 @@ Value *lowerObjectSizeCall(
const TargetLibraryInfo *TLI, AAResults *AA, bool MustSucceed,
SmallVectorImpl<Instruction *> *InsertedInstructions = nullptr);
-using SizeOffsetType = std::pair<APInt, APInt>;
+/// SizeOffsetType - A base template class for the object size visitors. Used
+/// here as a self-documenting way to handle the values rather than using a
+/// \p std::pair.
+template <typename T, class C> class SizeOffsetType {
+public:
+ T Size;
+ T Offset;
+
+ SizeOffsetType() = default;
+ SizeOffsetType(T Size, T Offset) : Size(Size), Offset(Offset) {}
+
+ bool anyKnown() const { return C::known(Size) || C::known(Offset); }
+ bool bothKnown() const { return C::known(Size) && C::known(Offset); }
+
+ bool operator==(const SizeOffsetType<T, C> &RHS) const {
+ return Size == RHS.Size && Offset == RHS.Offset;
+ }
+ bool operator!=(const SizeOffsetType<T, C> &RHS) const {
+ return !(*this == RHS);
+ }
+};
+
+/// SizeOffsetAPInt - Used by \p ObjectSizeOffsetVisitor, which works with
+/// \p APInts.
+class SizeOffsetAPInt : public SizeOffsetType<APInt, SizeOffsetAPInt> {
+ friend class SizeOffsetType;
+ static bool known(APInt V) { return V.getBitWidth() > 1; }
+
+public:
+ SizeOffsetAPInt() = default;
+ SizeOffsetAPInt(APInt Size, APInt Offset) : SizeOffsetType(Size, Offset) {}
+
+ bool knownSize() const { return SizeOffsetAPInt::known(Size); }
+ bool knownOffset() const { return SizeOffsetAPInt::known(Offset); }
----------------
bwendling wrote:
Ah yes! Done. :-)
https://github.com/llvm/llvm-project/pull/76882
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