[NFC] Convert OptimizationRemarkEmitter old emit() calls to new closure
parameterized emit() calls

Summary: This is not functional change to adopt new emit() API added in r313691.

Reviewed By: anemet

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D38285

llvm-svn: 315476
diff --git a/llvm/lib/Transforms/Scalar/LoopDataPrefetch.cpp b/llvm/lib/Transforms/Scalar/LoopDataPrefetch.cpp
index 2dac9951..3b5b9c9 100644
--- a/llvm/lib/Transforms/Scalar/LoopDataPrefetch.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopDataPrefetch.cpp
@@ -327,8 +327,10 @@
       ++NumPrefetches;
       DEBUG(dbgs() << "  Access: " << *PtrValue << ", SCEV: " << *LSCEV
                    << "\n");
-      ORE->emit(OptimizationRemark(DEBUG_TYPE, "Prefetched", MemI)
-                << "prefetched memory access");
+      ORE->emit([&]() {
+        return OptimizationRemark(DEBUG_TYPE, "Prefetched", MemI)
+               << "prefetched memory access";
+      });
 
       MadeChange = true;
     }