Stream: git-wasmtime

Topic: wasmtime / PR #6214 cranelift/egraphs: more select/bitsel...

Wasmtime GitHub notifications bot (Apr 14 2023 at 21:40):

jameysharp opened PR #6214 from jameysharp:select-opts to bytecodealliance:main:

I've been thinking about the algebraic relationships between bmask and other instructions due to recent PRs, and wrote down a few of them here.

These patterns don't seem to appear in any of the Sightglass bz2, pulldown-cmark, and spidermonkey benchmarks, as this PR has no effect on execution-time instructions retired for those benchmarks.

Wasmtime GitHub notifications bot (Apr 14 2023 at 21:40):

jameysharp requested abrown for a review on PR #6214.

Wasmtime GitHub notifications bot (Apr 14 2023 at 21:40):

jameysharp requested wasmtime-compiler-reviewers for a review on PR #6214.

Wasmtime GitHub notifications bot (May 09 2023 at 19:50):

fitzgen submitted PR review:

I think we want to be really careful about including select_spectre_guard optimizations in here. Might want to pull them out to their own file where we can argue why they are speculation safe.

Also these new optimization cases need tests.

Last updated: Dec 06 2025 at 06:05 UTC