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| author | Quentin Carbonneaux <quentin.carbonneaux@yale.edu> | 2015-10-27 11:36:47 -0400 |
|---|---|---|
| committer | Quentin Carbonneaux <quentin.carbonneaux@yale.edu> | 2015-10-30 13:20:42 -0400 |
| commit | dfede22dcdbf9dd1aa24aecf583bd94dda2e1bfa (patch) | |
| tree | 997c28b7cfbd480a81bf9f5a75ee9c3f3a05522b /lisc/util.c | |
| parent | 56203de6df7e8ed7f05dc3db061ef30d955cb795 (diff) | |
| download | roux-dfede22dcdbf9dd1aa24aecf583bd94dda2e1bfa.tar.gz | |
new regalloc heuristic for phis
At the beginning of each block look at the phi nodes that have some arguments already allocated. If the some arguments from blocks with high execution frequency are all assigned 'r', reset the the hint for the phi node to this 'r'. Combined with the following heuristic, this can save some copies at the end of the destination blocks.
Diffstat (limited to 'lisc/util.c')
0 files changed, 0 insertions, 0 deletions