Am 26.05.2016 um 02:10 schrieb Tim Rowley:
> ---
> src/gallium/auxiliary/util/u_cpu_detect.c | 17 +++++++++++++++++
> src/gallium/auxiliary/util/u_cpu_detect.h | 10 ++++++++++
> 2 files changed, 27 insertions(+)
>
> diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c
> b/src/gallium/auxiliary/util/u_cpu_detect.c
> index aa3c30a..0d4a7c4 100644
> --- a/src/gallium/auxiliary/util/u_cpu_detect.c
> +++ b/src/gallium/auxiliary/util/u_cpu_detect.c
> @@ -387,6 +387,23 @@ util_cpu_detect(void)
> util_cpu_caps.has_avx2 = (regs7[1] >> 5) & 1;
> }
>
> + // check for avx512
> + if (((regs2[2] >> 27) & 1) && // OSXSAVE
> + (xgetbv() & (0x7 << 5)) && // OPMASK: upper-256 enabled by OS
> + (xgetbv() & (0x3 << 1))) { // XMM/YMM enabled by OS
> + uint32_t regs3[4];
> + cpuid(0x7, regs3);
> + util_cpu_caps.has_avx512f = (regs3[1] >> 16) & 1;
> + util_cpu_caps.has_avx512dq = (regs3[1] >> 17) & 1;
> + util_cpu_caps.has_avx512ifma = (regs3[1] >> 21) & 1;
> + util_cpu_caps.has_avx512pf = (regs3[1] >> 26) & 1;
> + util_cpu_caps.has_avx512er = (regs3[1] >> 27) & 1;
> + util_cpu_caps.has_avx512cd = (regs3[1] >> 28) & 1;
> + util_cpu_caps.has_avx512bw = (regs3[1] >> 30) & 1;
> + util_cpu_caps.has_avx512vl = (regs3[1] >> 31) & 1;
> + util_cpu_caps.has_avx512vbmi = (regs3[2] >> 1) & 1;
> + }
> +
> if (regs[1] == 0x756e6547 && regs[2] == 0x6c65746e && regs[3] ==
> 0x49656e69) {
> /* GenuineIntel */
> util_cpu_caps.has_intel = 1;
> diff --git a/src/gallium/auxiliary/util/u_cpu_detect.h
> b/src/gallium/auxiliary/util/u_cpu_detect.h
> index 5ccfc93..b612a2c 100644
> --- a/src/gallium/auxiliary/util/u_cpu_detect.h
> +++ b/src/gallium/auxiliary/util/u_cpu_detect.h
> @@ -71,6 +71,16 @@ struct util_cpu_caps {
> unsigned has_xop:1;
> unsigned has_altivec:1;
> unsigned has_daz:1;
> +
> + unsigned has_avx512f:1;
> + unsigned has_avx512dq:1;
> + unsigned has_avx512ifma:1;
> + unsigned has_avx512pf:1;
> + unsigned has_avx512er:1;
> + unsigned has_avx512cd:1;
> + unsigned has_avx512bw:1;
> + unsigned has_avx512vl:1;
> + unsigned has_avx512vbmi:1;
> };
>
> extern struct util_cpu_caps
>
Reviewed-by: Roland Scheidegger <srol...@vmware.com>
(Albeit I didn't actually verify the bits...)
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