AE_SHORTSWAP — Reverse the order of the four, 16-bit elements in the register

Instruction Word

Slot
ae2_slot1
6
3
6
2
6
1
6
0
5
9
5
8
5
7
5
6
5
5
5
4
5
3
5
2
5
1
5
0
4
9
4
8
4
7
4
6
4
5
4
4
4
3
4
2
4
1
4
0
3
9
3
8
3
7
3
6
3
5
3
4
3
3
3
2
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9876543210
Format ae_format2 - 64 bit(s)0000 1110
AE_SHORTSWAP 1101 1100 11111011
ae_fld_to_dr_v 3210
ae_fld_to_dr_v0 3210

Slot
ae_slot2_1
6
3
6
2
6
1
6
0
5
9
5
8
5
7
5
6
5
5
5
4
5
3
5
2
5
1
5
0
4
9
4
8
4
7
4
6
4
5
4
4
4
3
4
2
4
1
4
0
3
9
3
8
3
7
3
6
3
5
3
4
3
3
3
2
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9876543210
Format ae_format1 - 64 bit(s)1 1110
AE_SHORTSWAP 1001001 0111
ae_fld_to_dr_v 3210
ae_fld_to_dr_v0 3210

Assembler Syntax

AE_SHORTSWAP aed0..15(ae_to_dr_v), aed0..15(ae_to_dr_v0)

C Syntax

#include <xtensa/tie/xt_hifi2.h>

extern ae_int16x4 AE_SHORTSWAP(ae_int16x4 d0);

Description

AE_SHORTSWAP reverses the order of the four, 16-bit elements from the input data register. Output[3, 2, 1, 0] = input[0, 1, 2, 3].

Implementation Pipeline

In Out
ae_to_dr_v0 Mstage ae_to_dr_v Mstage

Protos that use AE_SHORTSWAP

proto AE_SHORTSWAP { out ae_int16x4 d, in ae_int16x4 d0 }{}{
AE_SHORTSWAP d, d0;
}