Set repr(C) on the Dsp struct to recover performance #889
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After rust-lang/rust#102750 , Rust reorders fields in repr(Rust) structures based on size/alignment. Applying such reordering to the Dsp struct substantially hurts performance. Set repr(C) on the Dsp struct to recover that performance. See https://internals.rust-lang.org/t/unexpected-3-x-performance-regression-starting-with-rust-version-1-67/18724 for the test case and investigations that led to this.
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After rust-lang/rust#102750 , Rust reorders
fields in repr(Rust) structures based on size/alignment. Applying such
reordering to the Dsp struct substantially hurts performance.
Set repr(C) on the Dsp struct to recover that performance.
See
https://internals.rust-lang.org/t/unexpected-3-x-performance-regression-starting-with-rust-version-1-67/18724
for the test case and investigations that led to this.