From 0b1a27135acbf78578ea3abe45f4e0501c0cd21d Mon Sep 17 00:00:00 2001
From: Jingning Han <jingning@google.com>
Date: Fri, 3 Jan 2014 12:09:34 -0800
Subject: [PATCH] Reduce num of buffer swap calls in idct8_1d_sse2
This commit merges the initial buffer swap operations in idct8_1d_sse2
into the array transpose step, hence reducing number of instructions
therein.
Change-Id: I219f6f50813390d2ec3ee37eecf2a4a2b44ae479
---
vp9/common/x86/vp9_idct_intrin_sse2.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/vp9/common/x86/vp9_idct_intrin_sse2.c b/vp9/common/x86/vp9_idct_intrin_sse2.c
index e273c8105a..06df85054a 100644
--- a/vp9/common/x86/vp9_idct_intrin_sse2.c
+++ b/vp9/common/x86/vp9_idct_intrin_sse2.c
@@ -692,18 +692,9 @@ static void idct8_1d_sse2(__m128i *in) {
__m128i stp2_0, stp2_1, stp2_2, stp2_3, stp2_4, stp2_5, stp2_6, stp2_7;
__m128i tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
- in0 = in[0];
- in1 = in[1];
- in2 = in[2];
- in3 = in[3];
- in4 = in[4];
- in5 = in[5];
- in6 = in[6];
- in7 = in[7];
-
// 8x8 Transpose is copied from vp9_fdct8x8_sse2()
- TRANSPOSE_8X8(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3,
- in4, in5, in6, in7);
+ TRANSPOSE_8X8(in[0], in[1], in[2], in[3], in[4], in[5], in[6], in[7],
+ in0, in1, in2, in3, in4, in5, in6, in7);
// 4-stage 1D idct8x8
IDCT8_1D
--
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