i'm coming to the terrifying realization that there are less than a dozen people worldwide who understand ANY of the LLVM machine function pipeline
the entire half of the compiler between "instruction selection" and "printing assembly"
and i'm one of them
shit.
the entire half of the compiler between "instruction selection" and "printing assembly"
and i'm one of them
shit.
i don't mean "less than a dozen gurus"
i mean there are precisely zero gurus and less than a dozen blind fools fumbling around trying to understand the elephant
i mean there are precisely zero gurus and less than a dozen blind fools fumbling around trying to understand the elephant
at one point, about 1-2 years ago, i was like "okay, i'm writing a pass that uses LiveIntervals, surely I'll just find someone who understands it and ask them" and it turned out the foremost expert on LiveIntervals still wasn't quite sure
by the way in LLVM the information for "when in the program a value is live" is specified in three different places simultaneously, in three different ways, for hysterical raisins, and i want to die
kill flags are obsolete but you still have to support them
livevariables was supposed to be removed but one pass still needs it
liveintervals is a fractal disaster but was supposed to replace both
livevariables was supposed to be removed but one pass still needs it
liveintervals is a fractal disaster but was supposed to replace both
