18 points | by mpweiher a day ago
1 comments
> The best assignment is NP-hard to find, so all practical allocators use heuristics.
That said if you do the register allocation while the program is still in SSA form, it becomes polynomial (interference graph is a chordal graph).
https://compilers.cs.uni-saarland.de/projects/ssara/
> The best assignment is NP-hard to find, so all practical allocators use heuristics.
That said if you do the register allocation while the program is still in SSA form, it becomes polynomial (interference graph is a chordal graph).
https://compilers.cs.uni-saarland.de/projects/ssara/