har0ke/FFmpeg
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86/tx_float: fully support 128bit regs in LOAD64_LUT

Browse Source 
The gather path didn't support 128bit registers.
It's not faster on Zen 3, but it's here for completeness.
This commit is contained in:
Lynne 2022-09-19 04:13:04 +02:00
parent af42bb3d61
commit 892548e6a1
No known key found for this signature in database
GPG Key ID: A2FEA5F03F034464
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
libavutil/x86/tx_float.asm
View File

@ -107,19 +107,19 @@ SECTION .text
; %7 - temporary register (for avx only, enables vgatherdpd (AVX2) if FMA3 is set)
%macro LOAD64_LUT 5-7
%if %0 > 6 && cpuflag(avx2)
pcmpeqd %6, %6 ; pcmpeqq has a 0.5 throughput on Zen 3, this has 0.25
movapd xmm%7, [%3 + %4] ; float mov since vgatherdpd is a float instruction
vgatherdpd %1, [%2 + xmm%7*8], %6 ; must use separate registers for args
pcmpeqd %7, %7 ; pcmpeqq has a 0.5 throughput on Zen 3, this has 0.25
movupd xmm%6, [%3 + %4] ; float mov since vgatherdpd is a float instruction
vgatherdpd %1, [%2 + xmm%6*8], %7 ; must use separate registers for args
%else
mov %5d, [%3 + %4 + 0]
movsd xmm%1, [%2 + %5q*8]
%if mmsize == 32
%if sizeof%1 > 16 && %0 > 5
mov %5d, [%3 + %4 + 8]
movsd xmm%6, [%2 + %5q*8]
%endif
mov %5d, [%3 + %4 + 4]
movhps xmm%1, [%2 + %5q*8]
%if mmsize == 32
%if sizeof%1 > 16 && %0 > 5
mov %5d, [%3 + %4 + 12]
movhps xmm%6, [%2 + %5q*8]
vinsertf128 %1, %1, xmm%6, 1