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| author | Ronald S. Bultje <rsbultje@gmail.com> | 2010-09-24 14:07:23 +0000 |
|---|---|---|
| committer | Ronald S. Bultje <rsbultje@gmail.com> | 2010-09-24 14:07:23 +0000 |
| commit | ae1129186599b527def87dcccec35d2182978d16 (patch) | |
| tree | f4726d84b068ef164e86ca9628999dfb914ef29f /libavcodec/x86/h264_idct.asm | |
| parent | 4bca677494c7d39753cfbc356e1b8c3988024d16 (diff) | |
| download | ffmpeg-ae1129186599b527def87dcccec35d2182978d16.tar.gz | |
Unroll loop in h264_idct_add16intra_sse2(). Basically identical to r25171, this
inlines scan8[] and removes loop setup. 15% faster, 0.4% overall.
See "[PATCH] unroll loop in h264_idct_add8_sse2()" thread on ML.
Originally committed as revision 25172 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/x86/h264_idct.asm')
| -rw-r--r-- | libavcodec/x86/h264_idct.asm | 56 |
1 files changed, 28 insertions, 28 deletions
diff --git a/libavcodec/x86/h264_idct.asm b/libavcodec/x86/h264_idct.asm index 7af6952141..a1ccb13ac6 100644 --- a/libavcodec/x86/h264_idct.asm +++ b/libavcodec/x86/h264_idct.asm @@ -759,50 +759,50 @@ cglobal h264_idct_add16_sse2, 5, 5, 8 add16_sse2_cycle 7, 0x26 RET -; ff_h264_idct_add16intra_sse2(uint8_t *dst, const int *block_offset, -; DCTELEM *block, int stride, const uint8_t nnzc[6*8]) -cglobal h264_idct_add16intra_sse2, 5, 7, 8 - xor r5, r5 -%ifdef ARCH_X86_64 - mov r10, r0 -%endif -%ifdef PIC - lea r11, [scan8_mem] -%endif -.next2blocks - movzx r0, byte [scan8+r5] - movzx r0, word [r4+r0] +%macro add16intra_sse2_cycle 2 + movzx r0, word [r4+%2] test r0, r0 - jz .try_dc - mov r0d, dword [r1+r5*4] + jz .try%1dc + mov r0d, dword [r1+%1*8] %ifdef ARCH_X86_64 add r0, r10 %else add r0, r0m %endif call x264_add8x4_idct_sse2 - add r5, 2 - add r2, 64 - cmp r5, 16 - jl .next2blocks - REP_RET -.try_dc + jmp .cycle%1end +.try%1dc movsx r0, word [r2 ] or r0w, word [r2+32] - jz .skip2blocks - mov r0d, dword [r1+r5*4] + jz .cycle%1end + mov r0d, dword [r1+%1*8] %ifdef ARCH_X86_64 add r0, r10 %else add r0, r0m %endif call h264_idct_dc_add8_mmx2 -.skip2blocks - add r5, 2 +.cycle%1end +%if %1 < 7 add r2, 64 - cmp r5, 16 - jl .next2blocks - REP_RET +%endif +%endmacro + +; ff_h264_idct_add16intra_sse2(uint8_t *dst, const int *block_offset, +; DCTELEM *block, int stride, const uint8_t nnzc[6*8]) +cglobal h264_idct_add16intra_sse2, 5, 7, 8 +%ifdef ARCH_X86_64 + mov r10, r0 +%endif + add16intra_sse2_cycle 0, 0xc + add16intra_sse2_cycle 1, 0x14 + add16intra_sse2_cycle 2, 0xe + add16intra_sse2_cycle 3, 0x16 + add16intra_sse2_cycle 4, 0x1c + add16intra_sse2_cycle 5, 0x24 + add16intra_sse2_cycle 6, 0x1e + add16intra_sse2_cycle 7, 0x26 + RET %macro add8_sse2_cycle 2 movzx r0, word [r4+%2] |