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lavc/x86/hevc_add_res: Fix coeff overflow in ADD_RES_SSE_16_32_8 

Fix overflow for coeff -32768 in function ADD_RES_SSE_16_32_8 with no
performance drop.(SSE2/AVX/AVX2)

./checkasm --test=hevc_add_res --bench

Mainline:
  - hevc_add_res.add_residual [OK]
    hevc_add_res_32x32_8_sse2: 127.5
    hevc_add_res_32x32_8_avx: 127.0
    hevc_add_res_32x32_8_avx2: 86.5

Add overflow test case:
  - hevc_add_res.add_residual [FAILED]

After:
  - hevc_add_res.add_residual [OK]
    hevc_add_res_32x32_8_sse2: 126.8
    hevc_add_res_32x32_8_avx: 128.3
    hevc_add_res_32x32_8_avx2: 86.8

Signed-off-by: Xu Guangxin <guangxin.xu@intel.com>
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Linjie Fu 2020-03-05 15:48:09 +08:00 committed by Anton Khirnov
parent e9abef437f
commit 8b8492452d
1 changed files with 20 additions and 18 deletions
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38
libavcodec/x86/hevc_add_res.asm
View File

@ -84,34 +84,36 @@ cglobal hevc_add_residual_4_8, 3, 3, 6
%endmacro
%macro ADD_RES_SSE_16_32_8 3
mova xm2, [r1+%1]
mova m1, [%2]
mova m2, m1
punpcklbw m1, m0
punpckhbw m2, m0
mova xm5, [r1+%1]
mova xm6, [r1+%1+16]
%if cpuflag(avx2)
vinserti128 m2, m2, [r1+%1+32], 1
vinserti128 m5, m5, [r1+%1+32], 1
vinserti128 m6, m6, [r1+%1+48], 1
%endif
psubw m1, m0, m2
psubw m5, m0, m6
packuswb m2, m6
packuswb m1, m5
paddsw m1, m5
paddsw m2, m6
mova xm4, [r1+%1+mmsize*2]
mova m3, [%3]
mova m4, m3
punpcklbw m3, m0
punpckhbw m4, m0
mova xm5, [r1+%1+mmsize*2]
mova xm6, [r1+%1+mmsize*2+16]
%if cpuflag(avx2)
vinserti128 m4, m4, [r1+%1+96 ], 1
vinserti128 m5, m5, [r1+%1+96], 1
vinserti128 m6, m6, [r1+%1+112], 1
%endif
psubw m3, m0, m4
psubw m5, m0, m6
packuswb m4, m6
packuswb m3, m5
paddsw m3, m5
paddsw m4, m6
paddusb m2, [%2]
paddusb m4, [%3]
psubusb m2, m1
psubusb m4, m3
mova [%2], m2
mova [%3], m4
packuswb m1, m2
packuswb m3, m4
mova [%2], m1
mova [%3], m3
%endmacro