[PATCH] D41698: [DebugInfo] Enable debug information for C99 VLA types

[Sander de Smalen via Phabricator via cfe-commits]

sdesmalen created this revision.
sdesmalen added reviewers: echristo, aprantl, dexonsmith, clayborg, pcc, kristof.beyls.
Herald added a subscriber: JDevlieghere.

This patch enables debugging of C99 VLA types by generating more precise
LLVM Debug metadata, using the extended DISubrange 'count' field that
takes a DIVariable.

      

This should implement:

  Bug 30553: Debug info generated for arrays is not what GDB expects (not as good as GCC's)

https://bugs.llvm.org/show_bug.cgi?id=30553


https://reviews.llvm.org/D41698

Files:
  lib/CodeGen/CGDebugInfo.cpp
  lib/CodeGen/CGDebugInfo.h
  lib/CodeGen/CGDecl.cpp
  lib/CodeGen/CodeGenFunction.cpp
  lib/CodeGen/CodeGenFunction.h
  test/CodeGen/debug-info-vla.c
  test/CodeGenCXX/debug-info-vla.cpp

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