STLExtras: Add less_ptr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78521 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/ADT/STLExtras.h b/include/llvm/ADT/STLExtras.h
index 964e7e07ef7d57a67ef37ef61cb4599c44bc5063..9ac73c0c96c5d51e49a121910b9e22c9bbcd4006 100644 (file)
--- a/include/llvm/ADT/STLExtras.h
+++ b/include/llvm/ADT/STLExtras.h
@@ -28,6 +28,13 @@ namespace llvm {
 //     Extra additions to <functional>
 //===----------------------------------------------------------------------===//
 
+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;
+  }
+};
+
 template<class Ty>
 struct greater_ptr : public std::binary_function<Ty, Ty, bool> {
   bool operator()(const Ty* left, const Ty* right) const {