[llvm-dlltool] Improve an error message when unable to open files. NFC.

Differential Revision: https://reviews.llvm.org/D36818

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@311069 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/ToolDrivers/llvm-dlltool/DlltoolDriver.cpp b/lib/ToolDrivers/llvm-dlltool/DlltoolDriver.cpp
index 64fe11a4e366c642e1ccc11a390b46a83bff781b..94533270c30b83ec9c7ebf671bd1593dcbeb72eb 100644 (file)
--- a/lib/ToolDrivers/llvm-dlltool/DlltoolDriver.cpp
+++ b/lib/ToolDrivers/llvm-dlltool/DlltoolDriver.cpp
@@ -64,7 +64,7 @@ Optional<MemoryBufferRef> openFile(StringRef Path) {
   ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> MB = MemoryBuffer::getFile(Path);
 
   if (std::error_code EC = MB.getError()) {
-    llvm::errs() << "fail openFile: " << EC.message() << "\n";
+    llvm::errs() << "cannot open file " << Path << ": " << EC.message() << "\n";
     return None;
   }