Migrate the Emscripten benchmarks to wasi-sdk#321
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cfallin merged 1 commit intoJun 25, 2026
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`noop`, `blake3-simd`, and `intgemm-simd` were the only benchmarks still built with Emscripten. They now build with `wasi-sdk`, matching the rest of the C/C++ benchmarks and removing the Emscripten dependency. `noop` was straightforward since it doesn't do anything. `blake3-simd` and `intgemm-simd` were trickier. Emscripten comes with shims for mapping x86 SSE intrinsics onto Wasm SIMD, but `wasi-sdk` doesn't do that, so this commit introduces `wasm_sse_compat.h` headers to fill that gap ourselves. Note that `blake3-simd` and `intgemm-simd` use almost non-overlapping sets of SIMD instructions, and one is C and the other C++, so I didn't bother trying to share a single `wasm_sse_compat.h` file between them.
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noop,blake3-simd, andintgemm-simdwere the only benchmarks still built with Emscripten. They now build withwasi-sdk, matching the rest of the C/C++ benchmarks and removing the Emscripten dependency.noopwas straightforward since it doesn't do anything.blake3-simdandintgemm-simdwere trickier. Emscripten comes with shims for mapping x86 SSE intrinsics onto Wasm SIMD, butwasi-sdkdoesn't do that, so this commit introduceswasm_sse_compat.hheaders to fill that gap ourselves. Note thatblake3-simdandintgemm-simduse almost non-overlapping sets of SIMD instructions, and one is C and the other C++, so I didn't bother trying to share a singlewasm_sse_compat.hfile between them.