This repo contains samples of new variable locations and dropped variable
locations as produced by the new instruction referencing model in LLVM,
see: (insert link here). Specifically, two directories for "missing" and
"new" locations, within which:
 * missing*.ll and new*.ll contain the optimised IR for a particular
   function in clang-3.4 before isel. 
 * reduced*.ll in each dir contains an llvm-reduced equivalent of the
   corresponding sample number.
 * missing*.varname and new*.varname contains the "absolute" variable
   name that is either new or missing in the corresponding LLVM-IR.
 * hasdumpvardiff.sh is the interestingness test for llvm-reduce.
 * The "journal" file contains my notes from studying why locations are
   new / missing, including a comparison between the reduced and original
   versions. May contain abnormal amounts of sass depending on how tired
   I was at the time.

In the root directory:
 * abs_variable_naming.diff is the patch to dwarfdump that produces an
   absolute name for each variable seen in a clang-3.4 binary and prints
   it to stdout. I used a twisty turny maze of scripts, all different,
   to take new/missing absolute names and extract LLVM-IR for them from
   the clang-3.4 build directory, which is what you see here.
 * remove_excess_dbg_values.py: randomly deletes dbg.values from an
   LLVM-IR file and runs the interestingness test on them, to reduce
   down to only the relevant variable locations

ALSO: I've gzip'd the IR files, no point wasting excess disk space.