If rust isn’t doing escape analysis for stack vs heap allocation then what is even the fucking point of this language? I would have thought that was the first thing implemented.
Rust doesn’t allocate anything on the heap unless you tell it to. When you tell it too, it puts it on the heap. The target use case is as a systems language.
Escape analysis as you’re alluding to isn’t needed in this model because the amount of times this helps you (ie you put it on the heap but the compiler can figure out it can live on the stack) is about 0. You need escape analysis in managed memory languages where everything is nominally a heap allocation and the compiler is responsible for clawing back performance through escape analysis.
Escape analysis as you’re alluding to isn’t needed in this model because the amount of times this helps you (ie you put it on the heap but the compiler can figure out it can live on the stack) is about 0. You need escape analysis in managed memory languages where everything is nominally a heap allocation and the compiler is responsible for clawing back performance through escape analysis.