Commit 5305e79e authored by Tero Rintaluoma's avatar Tero Rintaluoma

adds preload for armv6 encoder asm

Added preload instructions to armv6 encoder optimizations.
About 5% average speed-up on Tegra2 for VGA@30fps sequence.

Change-Id: I41d74737720fb71ce7a316f07555357822f3347e
parent 4a4ade6d
......@@ -27,8 +27,11 @@
|vp8_mse16x16_armv6| PROC
push {r4-r9, lr}
mov r12, #16 ; set loop counter to 16 (=block height)
pld [r0, r1, lsl #0]
pld [r2, r3, lsl #0]
mov r12, #16 ; set loop counter to 16 (=block height)
mov r4, #0 ; initialize sse = 0
loop
......@@ -39,8 +42,10 @@ loop
mov lr, #0 ; constant zero
usub8 r8, r5, r6 ; calculate difference
pld [r0, r1, lsl #1]
sel r7, r8, lr ; select bytes with positive difference
usub8 r9, r6, r5 ; calculate difference with reversed operands
pld [r2, r3, lsl #1]
sel r8, r9, lr ; select bytes with negative difference
; calculate partial sums
......
......@@ -24,6 +24,12 @@
; stack max_sad (not used)
|vp8_sad16x16_armv6| PROC
stmfd sp!, {r4-r12, lr}
pld [r0, r1, lsl #0]
pld [r2, r3, lsl #0]
pld [r0, r1, lsl #1]
pld [r2, r3, lsl #1]
mov r4, #0 ; sad = 0;
mov r5, #8 ; loop count
......@@ -45,6 +51,9 @@ loop
add r0, r0, r1 ; set src pointer to next row
add r2, r2, r3 ; set dst pointer to next row
pld [r0, r1, lsl #1]
pld [r2, r3, lsl #1]
usada8 r4, r10, r12, r4 ; calculate sad for 4 pixels
usada8 r8, r11, lr, r8 ; calculate sad for 4 pixels
......@@ -70,6 +79,9 @@ loop
usada8 r4, r10, r12, r4 ; calculate sad for 4 pixels
usada8 r8, r11, lr, r8 ; calculate sad for 4 pixels
pld [r0, r1, lsl #1]
pld [r2, r3, lsl #1]
subs r5, r5, #1 ; decrement loop counter
add r4, r4, r8 ; add partial sad values
......
......@@ -25,6 +25,10 @@
|vp8_variance16x16_armv6| PROC
stmfd sp!, {r4-r12, lr}
pld [r0, r1, lsl #0]
pld [r2, r3, lsl #0]
mov r8, #0 ; initialize sum = 0
mov r11, #0 ; initialize sse = 0
mov r12, #16 ; set loop counter to 16 (=block height)
......@@ -37,8 +41,10 @@ loop
mov lr, #0 ; constant zero
usub8 r6, r4, r5 ; calculate difference
pld [r0, r1, lsl #1]
sel r7, r6, lr ; select bytes with positive difference
usub8 r9, r5, r4 ; calculate difference with reversed operands
pld [r2, r3, lsl #1]
sel r6, r9, lr ; select bytes with negative difference
; calculate partial sums
......
......@@ -23,6 +23,10 @@
|vp8_variance8x8_armv6| PROC
push {r4-r10, lr}
pld [r0, r1, lsl #0]
pld [r2, r3, lsl #0]
mov r12, #8 ; set loop counter to 8 (=block height)
mov r4, #0 ; initialize sum = 0
mov r5, #0 ; initialize sse = 0
......@@ -35,8 +39,10 @@ loop
mov lr, #0 ; constant zero
usub8 r8, r6, r7 ; calculate difference
pld [r0, r1, lsl #1]
sel r10, r8, lr ; select bytes with positive difference
usub8 r9, r7, r6 ; calculate difference with reversed operands
pld [r2, r3, lsl #1]
sel r8, r9, lr ; select bytes with negative difference
; calculate partial sums
......
......@@ -25,6 +25,10 @@
|vp8_variance_halfpixvar16x16_h_armv6| PROC
stmfd sp!, {r4-r12, lr}
pld [r0, r1, lsl #0]
pld [r2, r3, lsl #0]
mov r8, #0 ; initialize sum = 0
ldr r10, c80808080
mov r11, #0 ; initialize sse = 0
......@@ -42,8 +46,10 @@ loop
eor r4, r4, r10
usub8 r6, r4, r5 ; calculate difference
pld [r0, r1, lsl #1]
sel r7, r6, lr ; select bytes with positive difference
usub8 r6, r5, r4 ; calculate difference with reversed operands
pld [r2, r3, lsl #1]
sel r6, r6, lr ; select bytes with negative difference
; calculate partial sums
......
......@@ -25,6 +25,10 @@
|vp8_variance_halfpixvar16x16_hv_armv6| PROC
stmfd sp!, {r4-r12, lr}
pld [r0, r1, lsl #0]
pld [r2, r3, lsl #0]
mov r8, #0 ; initialize sum = 0
ldr r10, c80808080
mov r11, #0 ; initialize sse = 0
......@@ -53,8 +57,10 @@ loop
eor r4, r4, r10
usub8 r6, r4, r5 ; calculate difference
pld [r0, r1, lsl #1]
sel r7, r6, lr ; select bytes with positive difference
usub8 r6, r5, r4 ; calculate difference with reversed operands
pld [r2, r3, lsl #1]
sel r6, r6, lr ; select bytes with negative difference
; calculate partial sums
......
......@@ -25,6 +25,10 @@
|vp8_variance_halfpixvar16x16_v_armv6| PROC
stmfd sp!, {r4-r12, lr}
pld [r0, r1, lsl #0]
pld [r2, r3, lsl #0]
mov r8, #0 ; initialize sum = 0
ldr r10, c80808080
mov r11, #0 ; initialize sse = 0
......@@ -43,8 +47,10 @@ loop
eor r4, r4, r10
usub8 r6, r4, r5 ; calculate difference
pld [r0, r1, lsl #1]
sel r7, r6, lr ; select bytes with positive difference
usub8 r6, r5, r4 ; calculate difference with reversed operands
pld [r2, r3, lsl #1]
sel r6, r6, lr ; select bytes with negative difference
; calculate partial sums
......
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