[Driver] Make Driver::DefaultTargetTriple private (NFCI)

No in-tree targets access this `DefaultTargetTriple` directly, and usage
of default triples is generally discouraged. Make the field private.

This is part of en effort to make the clang driver use effective triples
more pervasively.

Differential Revision: https://reviews.llvm.org/D22289

llvm-svn: 275894

2 files changed, 6 insertions, 6 deletions

diff --git a/clang/include/clang/Driver/Driver.h b/clang/include/clang/Driver/Driver.h
index 3b3893e9fb2..b2ed5b07b5b 100644
--- a/clang/include/clang/Driver/Driver.h
+++ b/clang/include/clang/Driver/Driver.h
@@ -130,9 +130,6 @@ public:
   /// If the standard library is used
   bool UseStdLib;
 
-  /// Default target triple.
-  std::string DefaultTargetTriple;
-
   /// Driver title to use with help.
   std::string DriverTitle;
 
@@ -181,6 +178,9 @@ public:
   unsigned CCGenDiagnostics : 1;
 
 private:
+  /// Default target triple.
+  std::string DefaultTargetTriple;
+
   /// Name to use when invoking gcc/g++.
   std::string CCCGenericGCCName;
 
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 12889016fa0..61e8fbb2c81 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -54,12 +54,12 @@ Driver::Driver(StringRef ClangExecutable, StringRef DefaultTargetTriple,
       Mode(GCCMode), SaveTemps(SaveTempsNone), BitcodeEmbed(EmbedNone),
       LTOMode(LTOK_None), ClangExecutable(ClangExecutable),
       SysRoot(DEFAULT_SYSROOT), UseStdLib(true),
-      DefaultTargetTriple(DefaultTargetTriple),
       DriverTitle("clang LLVM compiler"), CCPrintOptionsFilename(nullptr),
       CCPrintHeadersFilename(nullptr), CCLogDiagnosticsFilename(nullptr),
       CCCPrintBindings(false), CCPrintHeaders(false), CCLogDiagnostics(false),
-      CCGenDiagnostics(false), CCCGenericGCCName(""), CheckInputsExist(true),
-      CCCUsePCH(true), SuppressMissingInputWarning(false) {
+      CCGenDiagnostics(false), DefaultTargetTriple(DefaultTargetTriple),
+      CCCGenericGCCName(""), CheckInputsExist(true), CCCUsePCH(true),
+      SuppressMissingInputWarning(false) {
 
   // Provide a sane fallback if no VFS is specified.
   if (!this->VFS)