Stream: git-wasmtime

Topic: wasmtime / PR #5644 Rework the switch module in cranelift...

Wasmtime GitHub notifications bot (Jan 27 2023 at 01:38):

elliottt opened PR #5644 from trevor/switch-brif to main:

Rework the compilation strategy for switch to:

• use brif instead of brz and brnz
• generate tables inline, rather than delyaing them to after the decision tree has been generated
• avoid allocating new vectors by using slices into the sorted contiguous ranges
• avoid generating some unconditional jumps
• output differences in test output using the similar crate for easier debugging

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Wasmtime GitHub notifications bot (Jan 27 2023 at 01:47):

elliottt has marked PR #5644 as ready for review.

Wasmtime GitHub notifications bot (Jan 27 2023 at 01:47):

elliottt requested jameysharp for a review on PR #5644.

Wasmtime GitHub notifications bot (Jan 27 2023 at 01:48):

elliottt edited PR #5644 from trevor/switch-brif to main:

Rework the compilation strategy for switch to:

• use brif instead of brz and brnz
• generate tables inline, rather than delyaing them to after the decision tree has been generated
• avoid allocating new vectors by using slices into the sorted contiguous ranges
• avoid generating some unconditional jumps
• output differences in test output using the similar crate for easier debugging

@bjorn3, if you have time to look through this I'd appreciate it!
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Wasmtime GitHub notifications bot (Jan 27 2023 at 01:54):

elliottt updated PR #5644 from trevor/switch-brif to main.

Wasmtime GitHub notifications bot (Jan 27 2023 at 06:49):

elliottt submitted PR review.

Wasmtime GitHub notifications bot (Jan 27 2023 at 06:49):

elliottt created PR review comment:

This should probably be a smallvec of size 3 instead of a Vec.

Wasmtime GitHub notifications bot (Jan 27 2023 at 12:11):

bjorn3 submitted PR review.

Wasmtime GitHub notifications bot (Jan 27 2023 at 12:11):

bjorn3 submitted PR review.

Wasmtime GitHub notifications bot (Jan 27 2023 at 12:11):

bjorn3 created PR review comment:

nit:

similar = { workspace = true }

Wasmtime GitHub notifications bot (Jan 27 2023 at 12:11):

bjorn3 created PR review comment:

Could you instead call bx.create_block() right before using it instead of before the for loop? That did just need a check if you are at the last iteration of the for loop and in that case use otherwise instead of bx.create_block().

Wasmtime GitHub notifications bot (Jan 27 2023 at 16:01):

elliottt updated PR #5644 from trevor/switch-brif to main.

Wasmtime GitHub notifications bot (Jan 27 2023 at 16:01):

elliottt updated PR #5644 from trevor/switch-brif to main.

Wasmtime GitHub notifications bot (Jan 27 2023 at 16:12):

elliottt submitted PR review.

Wasmtime GitHub notifications bot (Jan 27 2023 at 16:12):

elliottt created PR review comment:

It was nice to avoid the explicit index check in the loop, but you're right, that's a simpler implementation :)

Wasmtime GitHub notifications bot (Jan 27 2023 at 17:25):

bjorn3 submitted PR review.

Wasmtime GitHub notifications bot (Jan 27 2023 at 18:35):

elliottt updated PR #5644 from trevor/switch-brif to main.

Wasmtime GitHub notifications bot (Jan 27 2023 at 23:05):

jameysharp submitted PR review.

Wasmtime GitHub notifications bot (Jan 28 2023 at 00:00):

elliottt merged PR #5644.

Last updated: Dec 23 2024 at 12:05 UTC