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vp9_reconintra_neon_asm/tm4x4: simplify left load

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use vld1.8 {d0[]}, [r0] rather than ldrb+vdup; mildly faster

Change-Id: Ia5ffc736bcb0f5497b7d9e55a93bf5a5f5f6928c
This commit is contained in:
James Zern 2015-06-03 18:51:13 -07:00
parent 5df6c04585
commit 65d9599807
1 changed files with 9 additions and 10 deletions
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19
vp9/common/arm/neon/vp9_reconintra_neon_asm.asm
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@ -298,8 +298,7 @@ loop_h
|vp9_tm_predictor_4x4_neon| PROC
; Load ytop_left = above[-1];
sub r12, r2, #1
ldrb r12, [r12]
vdup.u8 d0, r12
vld1.u8 {d0[]}, [r12]
; Load above 4 pixels
vld1.32 {d2[0]}, [r2]
@ -309,10 +308,10 @@ loop_h
; Load left row by row and compute left + (above - ytop_left)
; 1st row and 2nd row
ldrb r12, [r3], #1
ldrb r2, [r3], #1
vdup.u16 q1, r12
vdup.u16 q2, r2
vld1.u8 {d2[]}, [r3]!
vld1.u8 {d4[]}, [r3]!
vmovl.u8 q1, d2
vmovl.u8 q2, d4
vadd.s16 q1, q1, q3
vadd.s16 q2, q2, q3
vqmovun.s16 d0, q1
@ -321,10 +320,10 @@ loop_h
vst1.32 {d1[0]}, [r0], r1
; 3rd row and 4th row
ldrb r12, [r3], #1
ldrb r2, [r3], #1
vdup.u16 q1, r12
vdup.u16 q2, r2
vld1.u8 {d2[]}, [r3]!
vld1.u8 {d4[]}, [r3]
vmovl.u8 q1, d2
vmovl.u8 q2, d4
vadd.s16 q1, q1, q3
vadd.s16 q2, q2, q3
vqmovun.s16 d0, q1