[PATCH] D25300: ThinLTO: handles modules with empty summaries

[Mehdi AMINI via llvm-commits]

mehdi_amini created this revision.
mehdi_amini added reviewers: tejohnson, pcc.
mehdi_amini added a subscriber: llvm-commits.

We need to add an entry in the combined-index for modules that have
a hash but otherwise empty summary, this is needed so that we can
get the hash for the module.

Also, if no entry is present in the combined index for a module, we
need to skip it when trying to compute a cache entry.


https://reviews.llvm.org/D25300

Files:
  lib/Bitcode/Reader/BitcodeReader.cpp
  lib/LTO/LTO.cpp
  lib/LTO/ThinLTOCodeGenerator.cpp
  tools/llvm-lto/llvm-lto.cpp

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