Merge "Optimize vp9_tm_predictor_8x8_neon function"

183361da · Frank Galligan · Gerrit Code Review · 7adfa9f4 · 56a8a0b5 · 183361da
Commit 183361da authored Jan 24, 2014 by Frank Galligan Committed by Gerrit Code Review Jan 24, 2014
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Showing with 31 additions and 32 deletions

vp9/common/arm/neon/vp9_reconintra_neon.asm vp9/common/arm/neon/vp9_reconintra_neon.asm +31 -32

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--- a/vp9/common/arm/neon/vp9_reconintra_neon.asm
+++ b/vp9/common/arm/neon/vp9_reconintra_neon.asm
@@ -354,53 +354,52 @@ 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|