r348709 - SourceManager: insert(make_pair(..)) -> try_emplace. NFC

[Fangrui Song via cfe-commits]

Author: maskray
Date: Sat Dec  8 17:46:01 2018
New Revision: 348709

URL: http://llvm.org/viewvc/llvm-project?rev=348709&view=rev
Log:
SourceManager: insert(make_pair(..)) -> try_emplace. NFC

Modified:
    cfe/trunk/lib/Basic/SourceManager.cpp

Modified: cfe/trunk/lib/Basic/SourceManager.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/SourceManager.cpp?rev=348709&r1=348708&r2=348709&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/SourceManager.cpp (original)
+++ cfe/trunk/lib/Basic/SourceManager.cpp Sat Dec  8 17:46:01 2018
@@ -195,8 +195,7 @@ llvm::MemoryBuffer *ContentCache::getBuf
 }
 
 unsigned LineTableInfo::getLineTableFilenameID(StringRef Name) {
-  auto IterBool =
-      FilenameIDs.insert(std::make_pair(Name, FilenamesByID.size()));
+  auto IterBool = FilenameIDs.try_emplace(Name, FilenamesByID.size());
   if (IterBool.second)
     FilenamesByID.push_back(&*IterBool.first);
   return IterBool.first->second;
@@ -1965,9 +1964,7 @@ SourceManager::getDecomposedIncludedLoc(
   // Uses IncludedLocMap to retrieve/cache the decomposed loc.
 
   using DecompTy = std::pair<FileID, unsigned>;
-  using MapTy = llvm::DenseMap<FileID, DecompTy>;
-  std::pair<MapTy::iterator, bool>
-    InsertOp = IncludedLocMap.insert(std::make_pair(FID, DecompTy()));
+  auto InsertOp = IncludedLocMap.try_emplace(FID);
   DecompTy &DecompLoc = InsertOp.first->second;
   if (!InsertOp.second)
     return DecompLoc; // already in map.