Create fewer copies of StringMaps. No functionality change intended.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@316301 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Frontend/PrecompiledPreamble.cpp

@@ -445,7 +445,7 @@ PrecompiledPreamble::PrecompiledPreamble(
     TempPCHFile PCHFile, std::vector<char> PreambleBytes,
     bool PreambleEndsAtStartOfLine,
     llvm::StringMap<PreambleFileHash> FilesInPreamble)
-    : PCHFile(std::move(PCHFile)), FilesInPreamble(FilesInPreamble),
+    : PCHFile(std::move(PCHFile)), FilesInPreamble(std::move(FilesInPreamble)),
       PreambleBytes(std::move(PreambleBytes)),
       PreambleEndsAtStartOfLine(PreambleEndsAtStartOfLine) {}
 

lib/Parse/ParseStmtAsm.cpp

@@ -558,7 +558,7 @@ StmtResult Parser::ParseMicrosoftAsmStatement(SourceLocation AsmLoc) {
   if (buildMSAsmString(PP, AsmLoc, AsmToks, TokOffsets, AsmString))
     return StmtError();
 
-  TargetOptions TO = Actions.Context.getTargetInfo().getTargetOpts();
+  const TargetOptions &TO = Actions.Context.getTargetInfo().getTargetOpts();
   std::string FeaturesStr =
       llvm::join(TO.Features.begin(), TO.Features.end(), ",");