Add a createUniqueFile function and switch llvm's users of unique_file.

This function is complementary to createTemporaryFile. It handles the case were
the unique file is *not* temporary: we will rename it in the end. Since we
will rename it, the file has to be in the same filesystem as the final
destination and we don't prepend the system temporary directory.

This has a small semantic difference from unique_file: the default mode is 0666.
This matches the behavior of most unix tools. For example, with this change
lld now produces files with the same permissions as ld. I will add a test
of this change when I port clang over to createUniqueFile (next commit).

llvm-svn: 185726

1 files changed, 4 insertions, 4 deletions

diff --git a/llvm/tools/bugpoint/OptimizerDriver.cpp b/llvm/tools/bugpoint/OptimizerDriver.cpp
index 43f2d3318ae..36d536ab89c 100644
--- a/llvm/tools/bugpoint/OptimizerDriver.cpp
+++ b/llvm/tools/bugpoint/OptimizerDriver.cpp
@@ -124,8 +124,8 @@ bool BugDriver::runPasses(Module *Program,
   // setup the output file name
   outs().flush();
   SmallString<128> UniqueFilename;
-  error_code EC =
-      sys::fs::unique_file(OutputPrefix + "-output-%%%%%%%.bc", UniqueFilename);
+  error_code EC = sys::fs::createUniqueFile(
+      OutputPrefix + "-output-%%%%%%%.bc", UniqueFilename);
   if (EC) {
     errs() << getToolName() << ": Error making unique filename: "
            << EC.message() << "\n";
@@ -136,8 +136,8 @@ bool BugDriver::runPasses(Module *Program,
   // set up the input file name
   SmallString<128> InputFilename;
   int InputFD;
-  EC = sys::fs::unique_file(OutputPrefix + "-input-%%%%%%%.bc", InputFD,
-                            InputFilename);
+  EC = sys::fs::createUniqueFile(OutputPrefix + "-input-%%%%%%%.bc", InputFD,
+                                 InputFilename);
   if (EC) {
     errs() << getToolName() << ": Error making unique filename: "
            << EC.message() << "\n";