[LLVMdev] how to disable sse and avx

[mats petersson]

Sounds like a bug, as far as I can tell, -mno-sse should disable all use of
SSE instructions (and thus all uses of xmm registers). Exactly what version
of LLVM, and what instructions from what LLVM IR or C source?

--
Mats

On 14 May 2015 at 18:12, zhi chen <zchenhn at gmail.com> wrote:

> Hello,
>
> I want to disable LLVM to use any SIMD registers like sse and avx. I tried
> -mno-sse and -mno-avx on my Core i7 machine. It seems that the generated
> assembly still uses xmm registers. Is there any way for LLVM to only use
> scalar registers?
>
> Thanks,
> Zhi
>
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