[llvm] [DTLTO][LLVM] Integrated Distributed ThinLTO (DTLTO) (PR #127749)

[Teresa Johnson via llvm-commits]

================
@@ -0,0 +1,3 @@
+Tests for DTLTO (integrated distributed ThinLTO) functionality.
+
+These are integration tests as DTLTO invokes `clang` for code-generation.
----------------
teresajohnson wrote:

Is the use of llvm-lto and opt here just to do testing before the clang and lld patches go in? If so, do we need cross project testing right now? Wondering if it would be better to just stick with the testing you have in this patch that is under llvm/test, and add the cross project testing using only external tools once those patches are in.

https://github.com/llvm/llvm-project/pull/127749