I didn’t call it octagon when I wrote it because I didn’t know that I reinvented a shitty/awesome version (shitty because it misses optimization opportunities,

I didn’t call it octagon when I wrote it because I didn’t know that I reinvented a shitty/awesome version (shitty because it misses optimization opportunities, awesome because by missing them it converges super fast while still nailing the hard bits). Look at DFGIntegerRangeOptimizationPhase.cpp