-mno-sse*?

[hujiajie]

Here's my story:

• -msse3 is hardcoded in the Makefile, but we would like a way to disable SIMD
• for X86, this is pretty easy with export CFLAGS=-mno-sse3
• for WASM, currently I have to use -msimd128 -mno-simd128 -U__SSE__ -U__SSE2__ -U__SSE3__, which looks too cumbersome than necessary

It seems emcc is not aware of -mno-sse* at all?

[sbc100]

@ngzhian might know . I thought we didn't enable any simd with -msse3 alone but I might be misremembering.

[ngzhian]

Maybe because https://github.com/emscripten-core/emscripten/blob/main/emcc.py#L771 doesn't check for the -mno-*?