From 785d51c45b283200f94582b9f652a3a5b1f720cd Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Thu, 17 Sep 2009 00:47:46 +0000
Subject: [PATCH] Simplify.

llvm-svn: 82104
---
 clang/tools/clang-cc/clang-cc.cpp | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/clang/tools/clang-cc/clang-cc.cpp b/clang/tools/clang-cc/clang-cc.cpp
index f3563e6ab2aa..1e1117a1aa3a 100644
--- a/clang/tools/clang-cc/clang-cc.cpp
+++ b/clang/tools/clang-cc/clang-cc.cpp
@@ -397,18 +397,11 @@ static llvm::cl::opt<bool>
 PThread("pthread", llvm::cl::desc("Support POSIX threads in generated code"),
          llvm::cl::init(false));
 
-static LangKind GetLanguage(const std::string &Filename) {
+static LangKind GetLanguage(llvm::StringRef Filename) {
   if (BaseLang != langkind_unspecified)
     return BaseLang;
 
-  std::string::size_type DotPos = Filename.rfind('.');
-
-  if (DotPos == std::string::npos) {
-    BaseLang = langkind_c;  // Default to C if no extension.
-    return langkind_c;
-  }
-
-  std::string Ext = std::string(Filename.begin()+DotPos+1, Filename.end());
+  llvm::StringRef Ext = Filename.rsplit('.').second;
   if (Ext == "c")
     return langkind_c;
   else if (Ext == "S" || Ext == "s")
-- 
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