[PATCH] Debug info: Support fragmented variables.

[David Blaikie]

  Could you show a little more of your example (you show the function's IR, but not the debug info metadata associated with it (I'm OK if you gloss over most of the metadata details, but highlighting the new metadata constructs your adding would be helpful - rather than wandering through the full test case to get the general idea))

  Also, a high level (higher than the code itself) description of the strategy you've taken would be helpful. I'm particularly curious about the use of a "entire" DIVariable and how/why it's built from constituent parts.

http://llvm-reviews.chandlerc.com/D2680