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64-bit AVX2 implementation of int sample conv.

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This commit is contained in:
DRC
2018-02-17 19:39:53 -06:00
parent 264dd42a98
commit 39e9e65c5b
3 changed files with 74 additions and 1 deletions
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3
simd/jsimd.h
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@@ -816,6 +816,9 @@ EXTERN(void) jsimd_convsamp_mmx
EXTERN(void) jsimd_convsamp_sse2 EXTERN(void) jsimd_convsamp_sse2
(JSAMPARRAY sample_data, JDIMENSION start_col, DCTELEM *workspace); (JSAMPARRAY sample_data, JDIMENSION start_col, DCTELEM *workspace);
EXTERN(void) jsimd_convsamp_avx2
(JSAMPARRAY sample_data, JDIMENSION start_col, DCTELEM *workspace);
EXTERN(void) jsimd_convsamp_neon EXTERN(void) jsimd_convsamp_neon
(JSAMPARRAY sample_data, JDIMENSION start_col, DCTELEM *workspace); (JSAMPARRAY sample_data, JDIMENSION start_col, DCTELEM *workspace);

65
simd/x86_64/jquanti-avx2.asm
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@@ -23,6 +23,71 @@
; -------------------------------------------------------------------------- ; --------------------------------------------------------------------------
SECTION SEG_TEXT SECTION SEG_TEXT
BITS 64 BITS 64
;
; Load data into workspace, applying unsigned->signed conversion
;
; GLOBAL(void)
; jsimd_convsamp_avx2 (JSAMPARRAY sample_data, JDIMENSION start_col,
; DCTELEM *workspace);
;
; r10 = JSAMPARRAY sample_data
; r11d = JDIMENSION start_col
; r12 = DCTELEM *workspace
align 32
global EXTN(jsimd_convsamp_avx2)
EXTN(jsimd_convsamp_avx2):
push rbp
mov rax, rsp
mov rbp, rsp
collect_args 3
mov eax, r11d
mov rsi, JSAMPROW [r10+0*SIZEOF_JSAMPROW] ; (JSAMPLE *)
mov rdi, JSAMPROW [r10+1*SIZEOF_JSAMPROW] ; (JSAMPLE *)
movq xmm0, XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE]
pinsrq xmm0, XMM_MMWORD [rdi+rax*SIZEOF_JSAMPLE], 1
mov rsi, JSAMPROW [r10+2*SIZEOF_JSAMPROW] ; (JSAMPLE *)
mov rdi, JSAMPROW [r10+3*SIZEOF_JSAMPROW] ; (JSAMPLE *)
movq xmm1, XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE]
pinsrq xmm1, XMM_MMWORD [rdi+rax*SIZEOF_JSAMPLE], 1
mov rsi, JSAMPROW [r10+4*SIZEOF_JSAMPROW] ; (JSAMPLE *)
mov rdi, JSAMPROW [r10+5*SIZEOF_JSAMPROW] ; (JSAMPLE *)
movq xmm2, XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE]
pinsrq xmm2, XMM_MMWORD [rdi+rax*SIZEOF_JSAMPLE], 1
mov rsi, JSAMPROW [r10+6*SIZEOF_JSAMPROW] ; (JSAMPLE *)
mov rdi, JSAMPROW [r10+7*SIZEOF_JSAMPROW] ; (JSAMPLE *)
movq xmm3, XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE]
pinsrq xmm3, XMM_MMWORD [rdi+rax*SIZEOF_JSAMPLE], 1
vpmovzxbw ymm0, xmm0 ; ymm0=(00 01 02 03 04 05 06 07 10 11 12 13 14 15 16 17)
vpmovzxbw ymm1, xmm1 ; ymm1=(20 21 22 23 24 25 26 27 30 31 32 33 34 35 36 37)
vpmovzxbw ymm2, xmm2 ; ymm2=(40 41 42 43 44 45 46 47 50 51 52 53 54 55 56 57)
vpmovzxbw ymm3, xmm3 ; ymm3=(60 61 62 63 64 65 66 67 70 71 72 73 74 75 76 77)
vpcmpeqw ymm7, ymm7, ymm7
vpsllw ymm7, ymm7, 7 ; ymm7={0xFF80 0xFF80 0xFF80 0xFF80 ..}
vpaddw ymm0, ymm0, ymm7
vpaddw ymm1, ymm1, ymm7
vpaddw ymm2, ymm2, ymm7
vpaddw ymm3, ymm3, ymm7
vmovdqu YMMWORD [YMMBLOCK(0,0,r12,SIZEOF_DCTELEM)], ymm0
vmovdqu YMMWORD [YMMBLOCK(2,0,r12,SIZEOF_DCTELEM)], ymm1
vmovdqu YMMWORD [YMMBLOCK(4,0,r12,SIZEOF_DCTELEM)], ymm2
vmovdqu YMMWORD [YMMBLOCK(6,0,r12,SIZEOF_DCTELEM)], ymm3
vzeroupper
uncollect_args 3
pop rbp
ret
; -------------------------------------------------------------------------- ; --------------------------------------------------------------------------
; ;

7
simd/x86_64/jsimd.c
View File

@@ -660,6 +660,8 @@ jsimd_can_convsamp (void)
if (sizeof(DCTELEM) != 2) if (sizeof(DCTELEM) != 2)
return 0; return 0;
if (simd_support & JSIMD_AVX2)
return 1;
if (simd_support & JSIMD_SSE2) if (simd_support & JSIMD_SSE2)
return 1; return 1;
@@ -691,7 +693,10 @@ GLOBAL(void)
jsimd_convsamp (JSAMPARRAY sample_data, JDIMENSION start_col, jsimd_convsamp (JSAMPARRAY sample_data, JDIMENSION start_col,
DCTELEM *workspace) DCTELEM *workspace)
{ {
jsimd_convsamp_sse2(sample_data, start_col, workspace); if (simd_support & JSIMD_AVX2)
jsimd_convsamp_avx2(sample_data, start_col, workspace);
else
jsimd_convsamp_sse2(sample_data, start_col, workspace);
} }
GLOBAL(void) GLOBAL(void)