How much does the Wasm backend improve the size of...
# webassemblyt
tunedal
10/21/2021, 4:40 PMHow much does the Wasm backend improve the size of the generated code compared to the JS IR backend?
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Svyatoslav Kuzmich [JB]
10/21/2021, 4:45 PMWe haven't integrated dead code elimination to K/Wasm yet. Code size measurements are not very useful until then.
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tunedal
10/21/2021, 4:50 PMAh, I see. But it's expected to generate smaller code than Kotlin/JS once DCE is implemented, right?
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Svyatoslav Kuzmich [JB]
10/21/2021, 4:54 PMI would expect higher constant overhead because in K/JS we use built-in library for things like math, strings and arrays. But overhead multiplier for user defined code should be lower because of compact byte-code. To sum it up - smaller size for large projects and bigger size for tiny projects.
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tunedal
10/21/2021, 4:59 PMInteresting. I noticed that the size of generated code with Kotlin/JS seemed to grow quite quickly as the project grew, so maybe the project doesn't have to be all that big to benefit. Thanks.
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Svyatoslav Kuzmich [JB]
10/21/2021, 5:02 PMThese is just my intuition. We'll have to measure and see.
Svyatoslav Kuzmich [JB]
10/21/2021, 5:04 PMI would also expect Wasm code to start running faster after it is downloaded, compared to the same size JS.
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Trevor Stone
10/21/2021, 5:41 PMAlso can get the benefits of parallelism right
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