[PATCH] D31109: Support, LTO: Error out when pruning a directory containing files not matching a prefix.

[Peter Collingbourne via Phabricator via llvm-commits]

pcc created this revision.

This is a safeguard against data loss if the user specifies a directory
that is not a cache directory. Teach the existing cache pruning clients
to create files with appropriate names.


https://reviews.llvm.org/D31109

Files:
  lld/ELF/LTO.cpp
  lld/test/ELF/lto/cache.ll
  llvm/include/llvm/Support/CachePruning.h
  llvm/lib/LTO/Caching.cpp
  llvm/lib/LTO/ThinLTOCodeGenerator.cpp
  llvm/lib/Support/CachePruning.cpp
  llvm/test/ThinLTO/X86/cache.ll

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