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| author | Quentin Carbonneaux <quentin@c9x.me> | 2022-11-20 22:14:41 +0100 |
|---|---|---|
| committer | Quentin Carbonneaux <quentin@c9x.me> | 2022-11-20 22:14:41 +0100 |
| commit | 674901b71834739cccf3f8665833dc125d1172b7 (patch) | |
| tree | 34da28ca9697819d5250d45deaea631007165de0 /fold.c | |
| parent | f5007126f3140a8c932d393c5b217308b80bd46a (diff) | |
| download | roux-674901b71834739cccf3f8665833dc125d1172b7.tar.gz | |
new slot coalescing pass
This pass limits stack usage when many small aggregates are allocated on the stack. A fast liveness analysis figures out which slots interfere and the pass then fuses slots that do not interfere. The pass also kills stack slots that are only ever assigned. On the hare stdlib test suite, this fusion pass managed to reduce the total eligible slot bytes count by 84%. The slots considered for fusion must not escape and not exceed 64 bytes in size.
Diffstat (limited to 'fold.c')
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