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Diffstat (limited to 'include/llvm/ADT/STLExtras.h')
-rw-r--r--include/llvm/ADT/STLExtras.h12
1 files changed, 11 insertions, 1 deletions
diff --git a/include/llvm/ADT/STLExtras.h b/include/llvm/ADT/STLExtras.h
index 5da906dc8c..58a23d886f 100644
--- a/include/llvm/ADT/STLExtras.h
+++ b/include/llvm/ADT/STLExtras.h
@@ -30,6 +30,16 @@ namespace llvm {
//===----------------------------------------------------------------------===//
template<class Ty>
+struct identity : public std::unary_function<Ty, Ty> {
+ Ty &operator()(Ty &self) const {
+ return self;
+ }
+ const Ty &operator()(const Ty &self) const {
+ return self;
+ }
+};
+
+template<class Ty>
struct less_ptr : public std::binary_function<Ty, Ty, bool> {
bool operator()(const Ty* left, const Ty* right) const {
return *left < *right;
@@ -274,7 +284,7 @@ static inline void array_pod_sort(IteratorTy Start, IteratorTy End,
if (Start == End) return;
qsort(&*Start, End-Start, sizeof(*Start), Compare);
}
-
+
//===----------------------------------------------------------------------===//
// Extra additions to <algorithm>
//===----------------------------------------------------------------------===//