Support/Path: Deprecate PathV1::exists and replace all uses with PathV2::fs::exists.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123151 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CompilerDriver/Main.cpp b/lib/CompilerDriver/Main.cpp
index 88cfdb2..7120027 100644
--- a/lib/CompilerDriver/Main.cpp
+++ b/lib/CompilerDriver/Main.cpp
@@ -16,6 +16,7 @@
 #include "llvm/CompilerDriver/CompilationGraph.h"
 #include "llvm/CompilerDriver/Error.h"
 
+#include "llvm/Support/FileSystem.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/Path.h"
 
@@ -50,7 +51,8 @@
       return 0;
     }
 
-    if (!tempDir.exists()) {
+    bool Exists;
+    if (llvm::sys::fs::exists(tempDir.str(), Exists) || !Exists) {
       std::string ErrMsg;
       if (tempDir.createDirectoryOnDisk(true, &ErrMsg)) {
         PrintError(ErrMsg);