<div dir="ltr"><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">chen</b> <span dir="ltr"><<a href="mailto:chenm003@163.com">chenm003@163.com</a>></span><br>Date: Wed, Mar 11, 2015 at 2:33 AM<br>Subject: Re: [x265] [PATCH] asm-avx2: intra_pred_ang8_11<br>To: Development for x265 <<a href="mailto:x265-devel@videolan.org">x265-devel@videolan.org</a>><br><br><br><div style><div style="color:rgb(0,0,0);font-family:arial;font-size:14px;line-height:1.7">>>its right now, just a little problem,</div><div style="color:rgb(0,0,0);font-family:arial;font-size:14px;line-height:1.7">>>[trans8_shuf] just use 2 times, buffer into register will same speed with more code size.</div><div style="color:rgb(0,0,0);font-family:arial;font-size:14px;line-height:1.7"><br></div><div style="color:rgb(0,0,0);font-family:arial;font-size:14px;line-height:1.7"> Do you mean instead of,</div><div style><div style><font color="#000000" face="arial"><span style="font-size:14px;line-height:23.7999992370605px"> mova m0, [trans8_shuf]</span></font></div><div style><font color="#000000" face="arial"><span style="font-size:14px;line-height:23.7999992370605px"> vpermd m1, m0, m1</span></font></div><div style><font color="#000000" face="arial"><span style="font-size:14px;line-height:23.7999992370605px"> vpermd m4, m0, m4</span></font></div><div style><font color="#000000" face="arial"><span style="font-size:14px;line-height:23.7999992370605px"><br></span></font></div><div style><font color="#000000" face="arial"><span style="font-size:14px;line-height:23.7999992370605px">we should use this,</span></font></div><div style><font color="#000000" face="arial"><span style="font-size:14px;line-height:23.7999992370605px"><div> vpermd m1,<span style="line-height:23.7999992370605px"> [trans8_shuf]</span>, m1</div><div> vpermd m4,<span style="line-height:23.7999992370605px"> [trans8_shuf]</span>, m4</div></span></font></div></div><div style="color:rgb(0,0,0);font-family:arial;font-size:14px;line-height:1.7"><br></div><div style="color:rgb(0,0,0);font-family:arial;font-size:14px;line-height:1.7">Does the compiler will not use two 'mova' instruction internally rather than just using once? Can be depend on the compiler here for this optimization? Even syntax of '<span style="line-height:23.7999992370605px">vpermd' does not allows this.</span><span style="line-height:1.7"> </span></div><div style="color:rgb(0,0,0);font-family:arial;font-size:14px;line-height:1.7"><br></div><pre style="color:rgb(0,0,0);font-family:arial;font-size:14px;line-height:1.7">At 2015-03-10 13:58:50,<a href="mailto:praveen@multicorewareinc.com" target="_blank">praveen@multicorewareinc.com</a> wrote:
># HG changeset patch
># User Praveen Tiwari <<a href="mailto:praveen@multicorewareinc.com" target="_blank">praveen@multicorewareinc.com</a>>
># Date 1425967049 -19800
># Node ID 810995b991eba3f7dcd9014db3b58a6b07723be3
># Parent f97dfb483647d573cbcab9a4f007ac2aa89c9066
>asm-avx2: intra_pred_ang8_11
>
>diff -r f97dfb483647 -r 810995b991eb source/common/x86/asm-primitives.cpp
>--- a/source/common/x86/asm-primitives.cpp Tue Mar 10 10:49:11 2015 +0530
>+++ b/source/common/x86/asm-primitives.cpp Tue Mar 10 11:27:29 2015 +0530
>@@ -1496,6 +1496,7 @@
> <a href="http://p.cu" target="_blank">p.cu</a>[BLOCK_8x8].intra_pred[9] = x265_intra_pred_ang8_9_avx2;
> <a href="http://p.cu" target="_blank">p.cu</a>[BLOCK_8x8].intra_pred[27] = x265_intra_pred_ang8_27_avx2;
> <a href="http://p.cu" target="_blank">p.cu</a>[BLOCK_8x8].intra_pred[25] = x265_intra_pred_ang8_25_avx2;
>+ <a href="http://p.cu" target="_blank">p.cu</a>[BLOCK_8x8].intra_pred[11] = x265_intra_pred_ang8_11_avx2;
>
> // copy_sp primitives
> <a href="http://p.cu" target="_blank">p.cu</a>[BLOCK_16x16].copy_sp = x265_blockcopy_sp_16x16_avx2;
>diff -r f97dfb483647 -r 810995b991eb source/common/x86/intrapred.h
>--- a/source/common/x86/intrapred.h Tue Mar 10 10:49:11 2015 +0530
>+++ b/source/common/x86/intrapred.h Tue Mar 10 11:27:29 2015 +0530
>@@ -179,6 +179,7 @@
> void x265_intra_pred_ang8_9_avx2(pixel* dst, intptr_t dstStride, const pixel* srcPix, int dirMode, int bFilter);
> void x265_intra_pred_ang8_27_avx2(pixel* dst, intptr_t dstStride, const pixel* srcPix, int dirMode, int bFilter);
> void x265_intra_pred_ang8_25_avx2(pixel* dst, intptr_t dstStride, const pixel* srcPix, int dirMode, int bFilter);
>+void x265_intra_pred_ang8_11_avx2(pixel* dst, intptr_t dstStride, const pixel* srcPix, int dirMode, int bFilter);
> void x265_all_angs_pred_4x4_sse4(pixel *dest, pixel *refPix, pixel *filtPix, int bLuma);
> void x265_all_angs_pred_8x8_sse4(pixel *dest, pixel *refPix, pixel *filtPix, int bLuma);
> void x265_all_angs_pred_16x16_sse4(pixel *dest, pixel *refPix, pixel *filtPix, int bLuma);
>diff -r f97dfb483647 -r 810995b991eb source/common/x86/intrapred8.asm
>--- a/source/common/x86/intrapred8.asm Tue Mar 10 10:49:11 2015 +0530
>+++ b/source/common/x86/intrapred8.asm Tue Mar 10 11:27:29 2015 +0530
>@@ -10317,3 +10317,47 @@
> movhps [r0 + 2 * r1], xm4
> movhps [r0 + r3], xm2
> RET
>+
>+INIT_YMM avx2
>+cglobal intra_pred_ang8_11, 3, 5, 5
>+ mova m3, [pw_1024]
>+ movu xm1, [r2 + 16]
>+ pinsrb xm1, [r2], 0
>+ pshufb xm1, [intra_pred_shuff_0_8]
>+ vinserti128 m0, m1, xm1, 1
>+
>+ lea r4, [c_ang8_mode_25]
>+ pmaddubsw m1, m0, [r4]
>+ pmulhrsw m1, m3
>+ pmaddubsw m2, m0, [r4 + mmsize]
>+ pmulhrsw m2, m3
>+ pmaddubsw m4, m0, [r4 + 2 * mmsize]
>+ pmulhrsw m4, m3
>+ pmaddubsw m0, [r4 + 3 * mmsize]
>+ pmulhrsw m0, m3
>+ packuswb m1, m2
>+ packuswb m4, m0
>+
>+ vperm2i128 m2, m1, m4, 00100000b
>+ vperm2i128 m1, m1, m4, 00110001b
>+ punpcklbw m4, m2, m1
>+ punpckhbw m2, m1
>+ punpcklwd m1, m4, m2
>+ punpckhwd m4, m2
>+ mova m0, [trans8_shuf]
>+ vpermd m1, m0, m1
>+ vpermd m4, m0, m4
>+
>+ lea r3, [3 * r1]
>+ movq [r0], xm1
>+ movhps [r0 + r1], xm1
>+ vextracti128 xm2, m1, 1
>+ movq [r0 + 2 * r1], xm2
>+ movhps [r0 + r3], xm2
>+ lea r0, [r0 + 4 * r1]
>+ movq [r0], xm4
>+ movhps [r0 + r1], xm4
>+ vextracti128 xm2, m4, 1
>+ movq [r0 + 2 * r1], xm2
>+ movhps [r0 + r3], xm2
>+ RET
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