Timeline for Solidity optimizer vs LLVM optimizer

4 events

when toggle format	what		by	license	comment
Jun 29, 2021 at 3:23	comment	added	Jessie Lesbian		Simple version: Solidity Optimizer reduces gas usage, when LLVM optimizer reduces the cost of running a node
Apr 12, 2017 at 19:39	comment	added	Matthew Schmidt		I'm not sure how the JIT works in this particular case, but nonetheless: Any client-side optimization still can't affect the gas used, because the EVM is the same for everyone, regardless of how they implement it. Think of it this way: an optimized client and one without an optimizer (or a different one) have to get the same result for a transaction's execution, or the blockchain would fork between them.
Apr 12, 2017 at 14:22	comment	added	Than21		That's what I thought initially. However, my understanding is that gas is actually computed at runtime (as the contract executes) and the EVM injects gas functions into the llvm-ir. So essentially - and correct me if I'm wrong - an llvm optimization could have a direct impact on gas just like a bytecode optimization in the Solidity compiler. I see though, that such an optimization in llvm might be more complex to implement since operations are now much more fine-grained .... so my hypothesis right now is that this is why there are two optimizers. Does that make sense ?
Apr 11, 2017 at 19:39	history	answered	Matthew Schmidt	CC BY-SA 3.0