Use None instead of an explicit constructor.

And remove a needless 'const' since ArrayRef is immutable.
Both as suggested by dblaikie on cfe-commits.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@247995 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index 8ec636a30a80b1d0ad3450ece025867d80be1bf5..f2312828bc3a06282ab9a2ddc9a96868ddd5991e 100644 (file)
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -1171,7 +1171,7 @@ static llvm::StringRef getGCCToolchainDir(const ArgList &Args) {
 /// triple.
 void Generic_GCC::GCCInstallationDetector::init(
     const Driver &D, const llvm::Triple &TargetTriple, const ArgList &Args,
-    const ArrayRef<std::string> ExtraTripleAliases) {
+    ArrayRef<std::string> ExtraTripleAliases) {
   llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
                                          ? TargetTriple.get64BitArchVariant()
                                          : TargetTriple.get32BitArchVariant();

diff --git a/lib/Driver/ToolChains.h b/lib/Driver/ToolChains.h
index 203e30bc8427e9926c0dcd7cf75d2f1247182dcf..f14fc3e78e502b354a540828a86b0964a3d69256 100644 (file)
--- a/lib/Driver/ToolChains.h
+++ b/lib/Driver/ToolChains.h
@@ -102,8 +102,7 @@ public:
     GCCInstallationDetector() : IsValid(false) {}
     void init(const Driver &D, const llvm::Triple &TargetTriple,
               const llvm::opt::ArgList &Args,
-              const ArrayRef<std::string> ExtraTripleAliases =
-                  ArrayRef<std::string>());
+              ArrayRef<std::string> ExtraTripleAliases = None);
 
     /// \brief Check whether we detected a valid GCC install.
     bool isValid() const { return IsValid; }