From 56a8a0b54bc7c5c85ba734672dbeee2eae7cdf10 Mon Sep 17 00:00:00 2001
From: Frank Galligan <fgalligan@google.com>
Date: Fri, 24 Jan 2014 11:07:14 -0800
Subject: [PATCH] Optimize vp9_tm_predictor_8x8_neon function
Change-Id: Ia12aae491202098ff66366145aa0c3da38dc97e5
---
vp9/common/arm/neon/vp9_reconintra_neon.asm | 63 ++++++++++-----------
1 file changed, 31 insertions(+), 32 deletions(-)
diff --git a/vp9/common/arm/neon/vp9_reconintra_neon.asm b/vp9/common/arm/neon/vp9_reconintra_neon.asm
index 71bf24c9f9..c90c26b36e 100644
--- a/vp9/common/arm/neon/vp9_reconintra_neon.asm
+++ b/vp9/common/arm/neon/vp9_reconintra_neon.asm
@@ -353,53 +353,52 @@ loop_h
vsubl.u8 q3, d2, d0
; Load left row by row and compute left + (above - ytop_left)
+ vld1.u8 {d6}, [r3]
+
; 1st row and 2nd row
- ldrb r12, [r3], #1
- ldrb r2, [r3], #1
- vdup.u16 q1, r12
- vdup.u16 q2, r2
- vadd.s16 q1, q1, q3
- vadd.s16 q2, q2, q3
- vqshrun.s16 d0, q1, #0
- vqshrun.s16 d1, q2, #0
- vst1.64 {d0}, [r0], r1
- vst1.64 {d1}, [r0], r1
+ vdup.u8 d0, d6[0]
+ vdup.u8 d1, d6[1]
+ vaddw.s16 q1, q3, d0
+ vaddw.s16 q2, q3, d1
; 3rd row and 4th row
- ldrb r12, [r3], #1
- ldrb r2, [r3], #1
- vdup.u16 q1, r12
- vdup.u16 q2, r2
- vadd.s16 q1, q1, q3
- vadd.s16 q2, q2, q3
+ vdup.u8 d0, d6[2]
+ vdup.u8 d1, d6[3]
+ vaddw.s16 q8, q3, d0
+ vaddw.s16 q9, q3, d1
+
vqshrun.s16 d0, q1, #0
vqshrun.s16 d1, q2, #0
+ vqshrun.s16 d2, q8, #0
+ vqshrun.s16 d3, q9, #0
+
vst1.64 {d0}, [r0], r1
vst1.64 {d1}, [r0], r1
+ vst1.64 {d2}, [r0], r1
+ vst1.64 {d3}, [r0], r1
; 5th row and 6th row
- ldrb r12, [r3], #1
- ldrb r2, [r3], #1
- vdup.u16 q1, r12
- vdup.u16 q2, r2
- vadd.s16 q1, q1, q3
- vadd.s16 q2, q2, q3
- vqshrun.s16 d0, q1, #0
- vqshrun.s16 d1, q2, #0
- vst1.64 {d0}, [r0], r1
- vst1.64 {d1}, [r0], r1
+ vdup.u8 d0, d6[4]
+ vdup.u8 d1, d6[5]
+ vaddw.s16 q1, q3, d0
+ vaddw.s16 q2, q3, d1
; 7rd row and 8th row
- ldrb r12, [r3], #1
- ldrb r2, [r3], #1
- vdup.u16 q1, r12
- vdup.u16 q2, r2
- vadd.s16 q1, q1, q3
- vadd.s16 q2, q2, q3
+ vdup.u8 d0, d6[6]
+ vdup.u8 d1, d6[7]
+ vaddw.s16 q8, q3, d0
+ vaddw.s16 q9, q3, d1
+
vqshrun.s16 d0, q1, #0
vqshrun.s16 d1, q2, #0
+ vqshrun.s16 d2, q8, #0
+ vqshrun.s16 d3, q9, #0
+
vst1.64 {d0}, [r0], r1
vst1.64 {d1}, [r0], r1
+ vst1.64 {d2}, [r0], r1
+ vst1.64 {d3}, [r0], r1
+
bx lr
ENDP ; |vp9_tm_predictor_8x8_neon|
--
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