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See if loop can be optimized by rearranging

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This commit is contained in:
Pauli Oikkonen 2018-12-03 21:50:57 +02:00
parent 584f2f74b6
commit 37a2a8bac8
1 changed files with 13 additions and 15 deletions
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28
src/strategies/avx2/encode_coding_tree-avx2.c
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@ -202,31 +202,25 @@ void kvz_encode_coeff_nxn_avx2(encoder_state_t * const state,
type, type,
scan_mode); scan_mode);
scan_pos_sig = scan_pos_last; scan_pos_sig = scan_pos_last;
int32_t abs_coeff[16];
abs_coeff[0] = abs(coeff[pos_last]);
uint32_t coeff_signs = (coeff[pos_last] < 0);
int32_t num_non_zero = 1;
int32_t last_nz_pos_in_cg = scan_pos_sig;
int32_t first_nz_pos_in_cg = scan_pos_sig;
scan_pos_sig--;
// significant_coeff_flag // significant_coeff_flag
for (i = scan_cg_last; i >= 0; i--) { for (i = scan_cg_last; i >= 0; i--) {
int32_t sub_pos = i << 4; // LOG2_SCAN_SET_SIZE; int32_t sub_pos = i << 4; // LOG2_SCAN_SET_SIZE;
int32_t abs_coeff[16];
int32_t cg_blk_pos = scan_cg[i]; int32_t cg_blk_pos = scan_cg[i];
int32_t cg_pos_y = cg_blk_pos / num_blk_side; int32_t cg_pos_y = cg_blk_pos / num_blk_side;
int32_t cg_pos_x = cg_blk_pos - (cg_pos_y * num_blk_side); int32_t cg_pos_x = cg_blk_pos - (cg_pos_y * num_blk_side);
uint32_t coeff_signs = 0;
int32_t last_nz_pos_in_cg = -1;
int32_t first_nz_pos_in_cg = 16;
int32_t num_non_zero = 0;
go_rice_param = 0; go_rice_param = 0;
if (scan_pos_sig == scan_pos_last) {
abs_coeff[0] = abs(coeff[pos_last]);
coeff_signs = (coeff[pos_last] < 0);
num_non_zero = 1;
last_nz_pos_in_cg = scan_pos_sig;
first_nz_pos_in_cg = scan_pos_sig;
scan_pos_sig--;
}
if (i == scan_cg_last || i == 0) { if (i == scan_cg_last || i == 0) {
sig_coeffgroup_flag[cg_blk_pos] = 1; sig_coeffgroup_flag[cg_blk_pos] = 1;
} else { } else {
@ -354,6 +348,10 @@ void kvz_encode_coeff_nxn_avx2(encoder_state_t * const state,
} }
} }
} }
last_nz_pos_in_cg = -1;
first_nz_pos_in_cg = 16;
num_non_zero = 0;
coeff_signs = 0;
} }
} }