Add a function object to compare the first or second component of a std::pair.
Replace instances of this scattered around the code base.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189169 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
index 982dcc9..7eaf40c 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
@@ -690,15 +690,6 @@
}
#endif // NDEBUG
-namespace {
- struct OrderSorter {
- bool operator()(const std::pair<unsigned, MachineInstr*> &A,
- const std::pair<unsigned, MachineInstr*> &B) {
- return A.first < B.first;
- }
- };
-}
-
/// ProcessSDDbgValues - Process SDDbgValues associated with this node.
static void
ProcessSDDbgValues(SDNode *N, SelectionDAG *DAG, InstrEmitter &Emitter,
@@ -857,7 +848,7 @@
// Sort the source order instructions and use the order to insert debug
// values.
- std::sort(Orders.begin(), Orders.end(), OrderSorter());
+ std::sort(Orders.begin(), Orders.end(), less_first());
SDDbgInfo::DbgIterator DI = DAG->DbgBegin();
SDDbgInfo::DbgIterator DE = DAG->DbgEnd();