Log is non-monotonic in PHP and Lua (purplesyringa.moe)

Screenshot of purplesyringa.moe: Log is non-monotonic in PHP and Lua

First screen, captured 2 months ago.

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Screenshot of purplesyringa.moe: Quadrupling code performance with a "useless" if

Quadrupling code performance with a "useless" if (purplesyringa.moe)

76 points by birdculture 3 months ago | 11 comments

Screenshot of purplesyringa.moe: Superoptimizing an FPU Emulator

Superoptimizing an FPU Emulator (purplesyringa.moe)

39 points by dverlaeckt80 10 days ago | 6 comments

Blog post on using superoptimization to find an optimal instruction sequence for a floating-point emulator function returning a float's lowest set bit.

superoptimization floating-point fpu-emulation compilers

Screenshot of purplesyringa.moe: The RAM Myth

The RAM Myth (purplesyringa.moe)

165 points by signa11 1 year ago | 131 comments

Screenshot of purplesyringa.moe: Vectorized CLZ and CTZ

Vectorized CLZ and CTZ (purplesyringa.moe)

47 points by zX41ZdbW 15 days ago | 5 comments

Blog post on purplesyringa explaining how to implement vectorized count-leading-zeros and count-trailing-zeros using floating-point tricks.

simd bit-manipulation clz ctz

Screenshot of purplesyringa.moe: I sped up serde_json strings by 20%

I sped up serde_json strings by 20%(purplesyringa.moe)

317 points by purplesyringa 2 years ago | 100 comments

Screenshot of purplesyringa.moe: WASM is not quite a stack machine

WASM is not quite a stack machine (purplesyringa.moe)

142 points by signa11 6 months ago | 43 comments

Looks similar

Quadrupling code performance with a "useless" if(purplesyringa.moe)

Superoptimizing an FPU Emulator(purplesyringa.moe)

The RAM Myth(purplesyringa.moe)

Vectorized CLZ and CTZ(purplesyringa.moe)