[llvm] [libLTO] add thinlto caching flags to libLTO (PR #168567)

[Steven Wu via llvm-commits]

================
@@ -543,6 +567,24 @@ thinlto_code_gen_t thinlto_create_codegen(void) {
     assert(CGOptLevelOrNone);
     CodeGen->setCodeGenOptLevel(*CGOptLevelOrNone);
   }
+  if (!ThinLTOCacheDir.empty()) {
+    auto Err = llvm::sys::fs::create_directories(ThinLTOCacheDir.getValue());
----------------
cachemeifyoucan wrote:

Is `getValue()` necessary here?

https://github.com/llvm/llvm-project/pull/168567