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0 pointsOthers5y ago0 comments

I worked on one as an undergrad: https://github.com/gwsystems/aWsm

Full AoT compilation, C programs run within 10% of native

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4 comments · 2 top-level

heavyset_go5y ago· 1 in thread

10% difference from native, or 10% of native performance?

OthersOP5y ago

10% worse performance. Not 10x worse :D

moonchild5y ago· 1 in thread

Since it compiles using llvm, what's the reason for the discrepancy?

Lost information about e.g. aliasing?

OthersOP5y ago

Bounds checking, dynamic dispatch is more expensive, wasm semantics have no undefined behavior to exploit for optimizations. And there is bloat in the process. I’m sure losing information effects things as well

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