> -----Original Message-----
> From: Dmitry Kozlyuk <[email protected]>
> Sent: Wednesday, February 3, 2021 7:08 AM
> To: Rong, Leyi <[email protected]>
> Cc: [email protected]; Zhang, Qi Z <[email protected]>; Yigit,
> Ferruh <[email protected]>; [email protected]; Richardson, Bruce
> <[email protected]>; [email protected]; Kadam, Pallavi
> <[email protected]>; Menon, Ranjit <[email protected]>; Xing,
> Beilei <[email protected]>; [email protected]; [email protected];
> [email protected]
> Subject: Re: [dpdk-dev] [PATCH v2] net/i40e: fix avx code error on MinGW
>
> On Tue, 2 Feb 2021 22:32:58 +0800, Leyi Rong wrote:
> > Adds extra cflags '-fno-asynchronous-unwind-tables'
> > to avoid the MinGW build error:
> > Error: invalid register for .seh_savexmm
> >
> > Fixes: 5c38c33f7880 ("net/i40e: disable AVX512 with MinGW")
> >
> > Signed-off-by: Leyi Rong <[email protected]>
>
> Tested-by: Dmitry Kozlyuk <[email protected]>
>
> Re: -fno-asynchronous-unwind-tables, when cross-compiling from Linux, I
> observe bit-to-bit identical i40e_rxtx_vec_avx512.c.obj. My guess it that this
> option somehow affects GCC inlining heuristics. Similar issue existed in
> librte_acl (at least a year ago win GCC 6, I believe), where GCC generated
> incorrect code unless certain functions had been inlined (caught by test app).
> No an AVX expert, just my 2c.
Applied to dpdk-next-net-intel.
Thanks
Qi
