| commit | 11c9a325399b282cb4ea7d1d24d42fceeec2a09a | [log] [tgz] |
|---|---|---|
| author | Andrew Scull <ascull@google.com> | Fri Aug 28 14:24:14 2015 -0700 |
| committer | Andrew Scull <ascull@google.com> | Fri Aug 28 14:24:14 2015 -0700 |
| tree | 351ff0336a0789b72500fde2c83a9426a4e9ba3a | |
| parent | 25529f7bdaf3dfa08455b87642a120e84961d6d6 [diff] |
Weight variables for register allocation by their number of uses. Count the number of instructions that use a variable following the heuristic that more uses implies higher register priority. This is currently very simple but is precursor work for weighting variables by loop nest depth. BUG= R=jvoung@chromium.org Review URL: https://codereview.chromium.org/1312433004.