Re: [llvm-dev] [PATCH 0/2] Initial support for AVX512FP16

2021-07-15 Thread Hongtao Liu via Gcc-patches
o Liu > Sent: Thursday, July 15, 2021 2:35 PM > To: Wang, Pengfei > Cc: Craig Topper ; Jakub Jelinek ; > Liu, Hongtao ; gcc-patches@gcc.gnu.org; Joseph Myers > > Subject: Re: [llvm-dev] [PATCH 0/2] Initial support for AVX512FP16 > > On Thu, Jul 15, 2021 at 10:07 AM Wang,

RE: [llvm-dev] [PATCH 0/2] Initial support for AVX512FP16

2021-07-14 Thread Wang, Pengfei via Gcc-patches
linek ; Liu, Hongtao ; gcc-patches@gcc.gnu.org; Joseph Myers Subject: Re: [llvm-dev] [PATCH 0/2] Initial support for AVX512FP16 On Thu, Jul 15, 2021 at 10:07 AM Wang, Pengfei wrote: > > Clang for AArch64 promotes each individual operation and rounds immediately > afterwards. https:/

Re: [llvm-dev] [PATCH 0/2] Initial support for AVX512FP16

2021-07-14 Thread Hongtao Liu via Gcc-patches
Craig Topper > via llvm-dev > Sent: Wednesday, July 14, 2021 11:32 PM > To: Hongtao Liu > Cc: Jakub Jelinek ; llvm-dev ; > Liu, Hongtao ; gcc-patches@gcc.gnu.org; Joseph Myers > > Subject: Re: [llvm-dev] [PATCH 0/2] Initial support for AVX512FP16 > > > > On Wed

RE: [llvm-dev] [PATCH 0/2] Initial support for AVX512FP16

2021-07-14 Thread Wang, Pengfei via Gcc-patches
cc.gnu.org; Joseph Myers Subject: Re: [llvm-dev] [PATCH 0/2] Initial support for AVX512FP16 On Wed, Jul 14, 2021 at 12:45 AM Hongtao Liu via llvm-dev mailto:llvm-...@lists.llvm.org>> wrote: > > > Set excess_precision_type to FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16 to > round aft

Re: [llvm-dev] [PATCH 0/2] Initial support for AVX512FP16

2021-07-14 Thread Craig Topper via Gcc-patches
On Wed, Jul 14, 2021 at 12:45 AM Hongtao Liu via llvm-dev < llvm-...@lists.llvm.org> wrote: > > > > > Set excess_precision_type to FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16 to > > round after each operation could keep semantics right. > > And I'll document the behavior difference between soft-fp and > >