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DC{4,8,16}_NEON: replace vmovl w/vaddl

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4/8/16 fewer instructions

Change-Id: I38fe08722e7b839e3f3e0bf4df7e0fa8e7a0138f
This commit is contained in:
James Zern 2020-03-05 09:41:14 -08:00
parent 1b92fe75a1
commit 687ab00e6e
1 changed files with 30 additions and 30 deletions
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60
src/dsp/dec_neon.c
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@ -1283,12 +1283,12 @@ static void DC4_NEON(uint8_t* dst) { // DC
const uint8x8_t A = vld1_u8(dst - BPS); // top row
const uint16x4_t p0 = vpaddl_u8(A); // cascading summation of the top
const uint16x4_t p1 = vpadd_u16(p0, p0);
const uint16x8_t L0 = vmovl_u8(vld1_u8(dst + 0 * BPS - 1));
const uint16x8_t L1 = vmovl_u8(vld1_u8(dst + 1 * BPS - 1));
const uint16x8_t L2 = vmovl_u8(vld1_u8(dst + 2 * BPS - 1));
const uint16x8_t L3 = vmovl_u8(vld1_u8(dst + 3 * BPS - 1));
const uint16x8_t s0 = vaddq_u16(L0, L1);
const uint16x8_t s1 = vaddq_u16(L2, L3);
const uint8x8_t L0 = vld1_u8(dst + 0 * BPS - 1);
const uint8x8_t L1 = vld1_u8(dst + 1 * BPS - 1);
const uint8x8_t L2 = vld1_u8(dst + 2 * BPS - 1);
const uint8x8_t L3 = vld1_u8(dst + 3 * BPS - 1);
const uint16x8_t s0 = vaddl_u8(L0, L1);
const uint16x8_t s1 = vaddl_u8(L2, L3);
const uint16x8_t s01 = vaddq_u16(s0, s1);
const uint16x8_t sum = vaddq_u16(s01, vcombine_u16(p1, p1));
const uint8x8_t dc0 = vrshrn_n_u16(sum, 3); // (sum + 4) >> 3
@ -1440,18 +1440,18 @@ static WEBP_INLINE void DC8_NEON(uint8_t* dst, int do_top, int do_left) {
}
if (do_left) {
const uint16x8_t L0 = vmovl_u8(vld1_u8(dst + 0 * BPS - 1));
const uint16x8_t L1 = vmovl_u8(vld1_u8(dst + 1 * BPS - 1));
const uint16x8_t L2 = vmovl_u8(vld1_u8(dst + 2 * BPS - 1));
const uint16x8_t L3 = vmovl_u8(vld1_u8(dst + 3 * BPS - 1));
const uint16x8_t L4 = vmovl_u8(vld1_u8(dst + 4 * BPS - 1));
const uint16x8_t L5 = vmovl_u8(vld1_u8(dst + 5 * BPS - 1));
const uint16x8_t L6 = vmovl_u8(vld1_u8(dst + 6 * BPS - 1));
const uint16x8_t L7 = vmovl_u8(vld1_u8(dst + 7 * BPS - 1));
const uint16x8_t s0 = vaddq_u16(L0, L1);
const uint16x8_t s1 = vaddq_u16(L2, L3);
const uint16x8_t s2 = vaddq_u16(L4, L5);
const uint16x8_t s3 = vaddq_u16(L6, L7);
const uint8x8_t L0 = vld1_u8(dst + 0 * BPS - 1);
const uint8x8_t L1 = vld1_u8(dst + 1 * BPS - 1);
const uint8x8_t L2 = vld1_u8(dst + 2 * BPS - 1);
const uint8x8_t L3 = vld1_u8(dst + 3 * BPS - 1);
const uint8x8_t L4 = vld1_u8(dst + 4 * BPS - 1);
const uint8x8_t L5 = vld1_u8(dst + 5 * BPS - 1);
const uint8x8_t L6 = vld1_u8(dst + 6 * BPS - 1);
const uint8x8_t L7 = vld1_u8(dst + 7 * BPS - 1);
const uint16x8_t s0 = vaddl_u8(L0, L1);
const uint16x8_t s1 = vaddl_u8(L2, L3);
const uint16x8_t s2 = vaddl_u8(L4, L5);
const uint16x8_t s3 = vaddl_u8(L6, L7);
const uint16x8_t s01 = vaddq_u16(s0, s1);
const uint16x8_t s23 = vaddq_u16(s2, s3);
sum_left = vaddq_u16(s01, s23);
@ -1527,18 +1527,18 @@ static WEBP_INLINE void DC16_NEON(uint8_t* dst, int do_top, int do_left) {
int i;
sum_left = vdupq_n_u16(0);
for (i = 0; i < 16; i += 8) {
const uint16x8_t L0 = vmovl_u8(vld1_u8(dst + (i + 0) * BPS - 1));
const uint16x8_t L1 = vmovl_u8(vld1_u8(dst + (i + 1) * BPS - 1));
const uint16x8_t L2 = vmovl_u8(vld1_u8(dst + (i + 2) * BPS - 1));
const uint16x8_t L3 = vmovl_u8(vld1_u8(dst + (i + 3) * BPS - 1));
const uint16x8_t L4 = vmovl_u8(vld1_u8(dst + (i + 4) * BPS - 1));
const uint16x8_t L5 = vmovl_u8(vld1_u8(dst + (i + 5) * BPS - 1));
const uint16x8_t L6 = vmovl_u8(vld1_u8(dst + (i + 6) * BPS - 1));
const uint16x8_t L7 = vmovl_u8(vld1_u8(dst + (i + 7) * BPS - 1));
const uint16x8_t s0 = vaddq_u16(L0, L1);
const uint16x8_t s1 = vaddq_u16(L2, L3);
const uint16x8_t s2 = vaddq_u16(L4, L5);
const uint16x8_t s3 = vaddq_u16(L6, L7);
const uint8x8_t L0 = vld1_u8(dst + (i + 0) * BPS - 1);
const uint8x8_t L1 = vld1_u8(dst + (i + 1) * BPS - 1);
const uint8x8_t L2 = vld1_u8(dst + (i + 2) * BPS - 1);
const uint8x8_t L3 = vld1_u8(dst + (i + 3) * BPS - 1);
const uint8x8_t L4 = vld1_u8(dst + (i + 4) * BPS - 1);
const uint8x8_t L5 = vld1_u8(dst + (i + 5) * BPS - 1);
const uint8x8_t L6 = vld1_u8(dst + (i + 6) * BPS - 1);
const uint8x8_t L7 = vld1_u8(dst + (i + 7) * BPS - 1);
const uint16x8_t s0 = vaddl_u8(L0, L1);
const uint16x8_t s1 = vaddl_u8(L2, L3);
const uint16x8_t s2 = vaddl_u8(L4, L5);
const uint16x8_t s3 = vaddl_u8(L6, L7);
const uint16x8_t s01 = vaddq_u16(s0, s1);
const uint16x8_t s23 = vaddq_u16(s2, s3);
const uint16x8_t sum = vaddq_u16(s01, s23);