Make LLVM command-line tools overwrite their output files without -f.
This is conventional command-line tool behavior. -f now just means
"enable binary output on terminals".

Add a -f option to llvm-extract and llvm-link, for consistency.

Remove F_Force from raw_fd_ostream and enable overwriting and
truncating by default. Introduce an F_Excl flag to permit users to
enable a failure when the file already exists. This flag is
currently unused.

Update Makefiles and documentation accordingly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79990 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/CFGPrinter.cpp b/lib/Analysis/CFGPrinter.cpp
index 4ac6b8d..03cfb9d 100644
--- a/lib/Analysis/CFGPrinter.cpp
+++ b/lib/Analysis/CFGPrinter.cpp
@@ -138,7 +138,7 @@
       errs() << "Writing '" << Filename << "'...";
       
       std::string ErrorInfo;
-      raw_fd_ostream File(Filename.c_str(), ErrorInfo, raw_fd_ostream::F_Force);
+      raw_fd_ostream File(Filename.c_str(), ErrorInfo);
 
       if (ErrorInfo.empty())
         WriteGraph(File, (const Function*)&F);
@@ -170,7 +170,7 @@
       errs() << "Writing '" << Filename << "'...";
 
       std::string ErrorInfo;
-      raw_fd_ostream File(Filename.c_str(), ErrorInfo, raw_fd_ostream::F_Force);
+      raw_fd_ostream File(Filename.c_str(), ErrorInfo);
       
       if (ErrorInfo.empty())
         WriteGraph(File, (const Function*)&F, true);