[llvm] [DTLTO] [LLVM] Initial DTLTO cache implementation (PR #156433)

[Teresa Johnson via llvm-commits]

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@@ -2417,6 +2456,9 @@ class OutOfProcessThinBackend : public CGThinBackend {
         for (const auto &J : Jobs) {
           assert(J.Task != 0);
 
+          if (!Cache.getCacheDirectoryPath().empty() && J.Cached)
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teresajohnson wrote:

When would Cache.getCacheDirectoryPath().empty() be true at the same time as J.Cached?

https://github.com/llvm/llvm-project/pull/156433