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-rw-r--r--include/llvm/ADT/FoldingSet.h9
-rw-r--r--lib/Support/FoldingSet.cpp18
2 files changed, 27 insertions, 0 deletions
diff --git a/include/llvm/ADT/FoldingSet.h b/include/llvm/ADT/FoldingSet.h
index ba415ac..375d84a 100644
--- a/include/llvm/ADT/FoldingSet.h
+++ b/include/llvm/ADT/FoldingSet.h
@@ -278,6 +278,10 @@ public:
bool operator==(FoldingSetNodeIDRef) const;
+ /// Used to compare the "ordering" of two nodes as defined by the
+ /// profiled bits and their ordering defined by memcmp().
+ bool operator<(FoldingSetNodeIDRef) const;
+
const unsigned *getData() const { return Data; }
size_t getSize() const { return Size; }
};
@@ -327,6 +331,11 @@ public:
bool operator==(const FoldingSetNodeID &RHS) const;
bool operator==(const FoldingSetNodeIDRef RHS) const;
+ /// Used to compare the "ordering" of two nodes as defined by the
+ /// profiled bits and their ordering defined by memcmp().
+ bool operator<(const FoldingSetNodeID &RHS) const;
+ bool operator<(const FoldingSetNodeIDRef RHS) const;
+
/// Intern - Copy this node's data to a memory region allocated from the
/// given allocator and return a FoldingSetNodeIDRef describing the
/// interned data.
diff --git a/lib/Support/FoldingSet.cpp b/lib/Support/FoldingSet.cpp
index c6282c6..4d489a8 100644
--- a/lib/Support/FoldingSet.cpp
+++ b/lib/Support/FoldingSet.cpp
@@ -38,6 +38,14 @@ bool FoldingSetNodeIDRef::operator==(FoldingSetNodeIDRef RHS) const {
return memcmp(Data, RHS.Data, Size*sizeof(*Data)) == 0;
}
+/// Used to compare the "ordering" of two nodes as defined by the
+/// profiled bits and their ordering defined by memcmp().
+bool FoldingSetNodeIDRef::operator<(FoldingSetNodeIDRef RHS) const {
+ if (Size != RHS.Size)
+ return Size < RHS.Size;
+ return memcmp(Data, RHS.Data, Size*sizeof(*Data)) < 0;
+}
+
//===----------------------------------------------------------------------===//
// FoldingSetNodeID Implementation
@@ -152,6 +160,16 @@ bool FoldingSetNodeID::operator==(FoldingSetNodeIDRef RHS) const {
return FoldingSetNodeIDRef(Bits.data(), Bits.size()) == RHS;
}
+/// Used to compare the "ordering" of two nodes as defined by the
+/// profiled bits and their ordering defined by memcmp().
+bool FoldingSetNodeID::operator<(const FoldingSetNodeID &RHS)const{
+ return *this < FoldingSetNodeIDRef(RHS.Bits.data(), RHS.Bits.size());
+}
+
+bool FoldingSetNodeID::operator<(FoldingSetNodeIDRef RHS) const {
+ return FoldingSetNodeIDRef(Bits.data(), Bits.size()) < RHS;
+}
+
/// Intern - Copy this node's data to a memory region allocated from the
/// given allocator and return a FoldingSetNodeIDRef describing the
/// interned data.