[PATCH] D23987: [Coverage] Suppress creating a code region if the same area is covered by an expansion region.

[Igor Kudrin via cfe-commits]

ikudrin created this revision.
ikudrin added reviewers: davidxl, bogner, vsk.
ikudrin added a subscriber: cfe-commits.

In many cases, these code regions are just redundant, but sometimes they could be assigned to the counter of the parent code region instead of the counter of the nested block.

https://reviews.llvm.org/D23987

Files:
  lib/CodeGen/CoverageMappingGen.cpp
  test/CoverageMapping/macroception.c
  test/CoverageMapping/macros.c

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