[ADT] Use llvm::partition_point (NFC) (#137495)

Author: kazutakahirata

llvm/include/llvm/ADT/AddressRanges.h

@@ -97,10 +97,8 @@ template <typename T> class AddressRangesBase {
     if (Start >= End)
       return Ranges.end();
 
-    auto It =
-        std::partition_point(Ranges.begin(), Ranges.end(), [=](const T &R) {
-          return AddressRange(R).start() <= Start;
-        });
+    auto It = llvm::partition_point(
+        Ranges, [=](const T &R) { return AddressRange(R).start() <= Start; });
 
     if (It == Ranges.begin())
       return Ranges.end();
@@ -169,10 +167,10 @@ class AddressRangesMap : public AddressRangesBase<AddressRangeValuePair> {
       return;
 
     // Search for range which is less than or equal incoming Range.
-    auto It = std::partition_point(Ranges.begin(), Ranges.end(),
-                                   [=](const AddressRangeValuePair &R) {
-                                     return R.Range.start() <= Range.start();
-                                   });
+    auto It =
+        llvm::partition_point(Ranges, [=](const AddressRangeValuePair &R) {
+          return R.Range.start() <= Range.start();
+        });
 
     if (It != Ranges.begin())
       It--;