[llvm] [DTLTO][Windows] Expand short 8.3 form paths in ThinLTO module IDs (PR #178303)

[Teresa Johnson via llvm-commits]

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@@ -0,0 +1,90 @@
+# REQUIRES: ld.lld,llvm-ar,tempshortpaths
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teresajohnson wrote:

does this need to be restricted to windows?

https://github.com/llvm/llvm-project/pull/178303