Potentially optimize dot4{I,U}8Packed on Metal
#7653
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This might allow the Metal compiler to emit faster code (but that's not confirmed). See <gpuweb/gpuweb#2677 (comment)> for the optimization. The limitation to Metal 2.1+ is discussed here: <gfx-rs#7574 (comment)>.
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CI on test failed because the latest changes to `put_block` made its stack too big. Factoring out the new code into a separate method fixes this issue.
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I fixed the issue of an excessive stack size of The previously failing CI test can be run on a non-mac machine as follows: cd naga
cargo test --features msl-out test_stack_size |
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Connections
dot4{I, U}8Packedon SPIR-V and HLSL #7574 (comment)Description
On Metal >= 2.1, emit code for
dot4I8Packedanddot4U8Packedthat might be easier to optimize for the compiler.Testing
Squash or Rebase?
Needs squashing.
Checklist
cargo fmt.taplo format.cargo clippy --tests. If applicable, add:--target wasm32-unknown-unknowncargo xtask testto run tests.CHANGELOG.mdentry.