Commit 70092af5 authored by Dmitry Kovalev's avatar Dmitry Kovalev
Browse files

Cleaning up and speeding up vp9_idct32x32_1024_add_sse2().

Change-Id: If91017b792572c9db6e257011ca307bef8428486
parent 54bec097
......@@ -3573,6 +3573,7 @@ void vp9_idct32x32_1024_add_sse2(const int16_t *input, uint8_t *dest,
int stride) {
const __m128i rounding = _mm_set1_epi32(DCT_CONST_ROUNDING);
const __m128i final_rounding = _mm_set1_epi16(1<<5);
const __m128i zero = _mm_setzero_si128();
// idct constants for each stage
const __m128i stg1_0 = pair_set_epi16(cospi_31_64, -cospi_1_64);
......@@ -3635,7 +3636,6 @@ void vp9_idct32x32_1024_add_sse2(const int16_t *input, uint8_t *dest,
stp2_30, stp2_31;
__m128i tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
int i, j, i32;
int zero_flag[2];
for (i = 0; i < 4; i++) {
i32 = (i << 5);
......@@ -3710,13 +3710,7 @@ void vp9_idct32x32_1024_add_sse2(const int16_t *input, uint8_t *dest,
zero_idx[13] = _mm_or_si128(zero_idx[10], zero_idx[11]);
zero_idx[14] = _mm_or_si128(zero_idx[12], zero_idx[13]);
zero_idx[0] = _mm_unpackhi_epi64(zero_idx[14], zero_idx[14]);
zero_idx[1] = _mm_or_si128(zero_idx[0], zero_idx[14]);
zero_idx[2] = _mm_srli_epi64(zero_idx[1], 32);
zero_flag[0] = _mm_cvtsi128_si32(zero_idx[1]);
zero_flag[1] = _mm_cvtsi128_si32(zero_idx[2]);
if (!zero_flag[0] && !zero_flag[1]) {
if (_mm_movemask_epi8(_mm_cmpeq_epi32(zero_idx[14], zero)) == 0xFFFF) {
col[i32 + 0] = _mm_setzero_si128();
col[i32 + 1] = _mm_setzero_si128();
col[i32 + 2] = _mm_setzero_si128();
......@@ -3795,7 +3789,6 @@ void vp9_idct32x32_1024_add_sse2(const int16_t *input, uint8_t *dest,
col[i32 + 31] = _mm_sub_epi16(stp1_0, stp1_31);
}
for (i = 0; i < 4; i++) {
const __m128i zero = _mm_setzero_si128();
// Second 1-D idct
j = i << 3;
......
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