AE_MAX32 — 2-way 32-bit maximum

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_MAX32 1000000000010100 1110
ae_fld_cmpp_v 3210
ae_fld_cmpp_v0 3210
ae_fld_cmpp_v1 3210

Slot
Inst
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 x24 - 24 bit(s) 0
AE_MAX32 01010010 0100
ae_fld_cmpp_v 3210
ae_fld_cmpp_v0 3210
ae_fld_cmpp_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_MAX32 0110011
ae_fld_cmpp_v 3210
ae_fld_cmpp_v0 3210
ae_fld_cmpp_v1 3210

Assembler Syntax

AE_MAX32 aed0..15(ae_cmpp_v), aed0..15(ae_cmpp_v0), aed0..15(ae_cmpp_v1)

C Syntax

#include <xtensa/tie/xt_hifi2.h>

extern ae_int32x2 AE_MAX32(ae_int32x2 d0, ae_int32x2 d1);

Description

AE_MAX32 is an element-wise 32-bit maximum of two AE_DR registers d0 and d1. The result placed in d is { MAX(d0[63:32] , d1[63:32]) , MAX(d0[31:0] , d1[31:0]) }.

Implementation Pipeline

In Out
ae_cmpp_v0 Mstage, ae_cmpp_v1 Mstage ae_cmpp_v Mstage

Protos that use AE_MAX32

proto AE_INT16X4_MAX { out ae_int16x4 d, in ae_int16x4 d0, in ae_int16x4 d1 }{ae_int32x4 t0, ae_int32x4 t1, ae_int32x4 r}{
AE_SEXT32X2D16.32 t1->d0, d0;
AE_SEXT32X2D16.10 t1->d1, d0;
AE_SEXT32X2D16.32 t0->d0, d1;
AE_SEXT32X2D16.10 t0->d1, d1;
AE_MAX32 r->d0, t0->d0, t1->d0;
AE_MAX32 r->d1, t0->d1, t1->d1;
AE_SEL16I d, r->d0, r->d1, 8;
}
proto AE_INT16X4_RMAX { out int16 a, in ae_int16x4 d0 }{ae_int32x4 t, ae_int32x2 t0, int16 lo, int16 hi}{
AE_SEXT32X2D16.32 t->d1, d0;
AE_SEXT32X2D16.10 t->d0, d0;
AE_MAX32 t0, t->d0, t->d1;
AE_MOVAD32.L lo, t0;
AE_MOVAD32.H hi, t0;
MAX a, lo, hi;
}
proto AE_INT32X4_MAX { out ae_int32x4 d, in ae_int32x4 d0, in ae_int32x4 d1 }{}{
AE_MAX32 d->d0, d0->d0, d1->d0;
AE_MAX32 d->d1, d0->d1, d1->d1;
}
proto AE_MAX32 { out ae_int32x2 d, in ae_int32x2 d0, in ae_int32x2 d1 }{}{
AE_MAX32 d, d0, d1;
}
proto AE_MAXB32 { out ae_int32x2 d, in ae_int32x2 d0, in ae_int32x2 d1, out xtbool2 bhl }{}{
AE_MAX32 d, d0, d1;
AE_LT32 bhl, d1, d0;
}
proto AE_MAXBP24S { out ae_p24x2s d, in ae_p24x2s d0, in ae_p24x2s d1, out xtbool2 bhl }{}{
AE_MAX32 d, d0, d1;
AE_LT32 bhl, d1, d0;
}
proto AE_MAXP24S { out ae_p24x2s d, in ae_p24x2s d0, in ae_p24x2s d1 }{}{
AE_MAX32 d, d0, d1;
}
proto AE_MAX_32_signed { out ae_int32 a, in ae_int32 b, in ae_int32 c }{}{
AE_MAX32 a, b, c;
}