AE_DIV64D32.H — 1-bit divide-step operation

Instruction Word

Slot
ae2_slot0
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_DIV64D32.H 1000000000011010 1011 0111
ae_fld_arth_v 3210
ae_fld_arth_v1 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_DIV64D32.H 1000111 0011
ae_fld_arth_v 3210
ae_fld_arth_v1 3210

Assembler Syntax

AE_DIV64D32.H aed0..15(ae_arth_v), aed0..15(ae_arth_v1)

C Syntax

#include <xtensa/tie/xt_hifi2.h>

extern void AE_DIV64D32_H(ae_int64 d /*inout*/, ae_int32x2 d0);

Description

AE_DIV64D32.H shifts left the 64-bit input value d by 1. If the unsigned 32-bit H element of AE_DR register d0 is greater than the unsigned value in the 32 MSBs of the shifted value, the shifted value is placed in AE_DR register d; otherwise, d0.H is subtracted from the 32-bit MSBs of the shifted value, the LSB of the shifted value is set to 1 and the result is placed in AE_DR register d

Implementation Pipeline

In Out
ae_arth_v Mstage, ae_arth_v1 Mstage ae_arth_v Mstage

Protos that use AE_DIV64D32.H

proto AE_DIV64D32.H { inout ae_int64 d, in ae_int32x2 d0 }{}{
AE_DIV64D32.H d, d0;
}