Teach the driver about failure result files, which are compilation

output files that are valid regardless of whether the compilation
succeeded or failed (but not if we crash).  Add depfiles to the
failure result file list.

llvm-svn: 145018

2 files changed, 8 insertions, 1 deletions

diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index feeeb049f55..086e3a411f3 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -507,9 +507,14 @@ int Driver::ExecuteCompilation(const Compilation &C,
     return Res;
 
   // Otherwise, remove result files as well.
-  if (!C.getArgs().hasArg(options::OPT_save_temps))
+  if (!C.getArgs().hasArg(options::OPT_save_temps)) {
     C.CleanupFileList(C.getResultFiles(), true);
 
+    // Failure result files are valid unless we crashed.
+    if (Res < 0)
+      C.CleanupFileList(C.getFailureResultFiles(), true);
+  }
+
   // Print extra information about abnormal failures, if possible.
   //
   // This is ad-hoc, but we don't want to be excessively noisy. If the result
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 906f2ae0db7..161001ccdbd 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -218,11 +218,13 @@ void Clang::AddPreprocessingOptions(Compilation &C,
       DepFile = Output.getFilename();
     } else if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
       DepFile = MF->getValue(Args);
+      C.addFailureResultFile(DepFile);
     } else if (A->getOption().matches(options::OPT_M) ||
                A->getOption().matches(options::OPT_MM)) {
       DepFile = "-";
     } else {
       DepFile = darwin::CC1::getDependencyFileName(Args, Inputs);
+      C.addFailureResultFile(DepFile);
     }
     CmdArgs.push_back("-dependency-file");
     CmdArgs.push_back(DepFile);