1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
<!---======================= begin_copyright_notice ============================
Copyright (C) 2020-2022 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ==========================-->
## Opcode
RAW_SENDS = 0x7a
## Format
| | | | | | | |
| --- | --- | --- | --- | --- | --- | --- |
| 0x7a(RAW_SENDS) | Modifiers | Exec_size | Pred | SFID | NumSrc0 | NumSrc1 |
| | NumDst | ExMsgDesc | Desc | Src0 | Src1 | Dst |
## Semantics
```
A direct method for generating a GEN native split send message
```
## Description
A raw message send that will be translated into a GEN split send instruction
- **Modifiers(ub):**
- Bit[0]: Determines whether sends or sendsc should be used
- 0b0: raw_sends
- 0b1: raw_sendsc
- Bit[1]: Determines whether EOT is set or not
- **Exec_size(ub):** Execution size
- Bit[2..0]: size of the region for source and destination operands
- 0b000: 1 element (scalar)
- 0b001: 2 elements
- 0b010: 4 elements
- 0b011: 8 elements
- 0b100: 16 elements
- 0b101: 32 elements
- Bit[7..4]: execution mask (explicit control over the enabled channels)
- 0b0000: M1
- 0b0001: M2
- 0b0010: M3
- 0b0011: M4
- 0b0100: M5
- 0b0101: M6
- 0b0110: M7
- 0b0111: M8
- 0b1000: M1_NM
- 0b1001: M2_NM
- 0b1010: M3_NM
- 0b1011: M4_NM
- 0b1100: M5_NM
- 0b1101: M6_NM
- 0b1110: M7_NM
- 0b1111: M8_NM
- **Pred(uw):** Predication control
- **SFID(ub):** Shared function Id targeted by this send message. Valid values are [0-15]
- **NumSrc0(ub):** Number of GRF registers for the send message payload 0
- **NumSrc1(ub):** Number of GRF registers for the send message payload 1
- **NumDst(ub):** Number of GRF registers for the send message response
- **ExMsgDesc(scalar):** Extended message descriptor for the send. Must have type UD
- **Desc(scalar):** Message descriptor for the send. Must have type UD
- **Src0(raw_operand):** The general variable storing the send message payload 0
- **Src1(raw_operand):** The general variable storing the send message payload 1
- **Dst(raw_operand):** The raw operand of a general variable storing send message response
#### Properties
## Text
```
[(<P>)] {raw_sends|raw_sendsc}[_eot] <sfid> <numSrc0> <numSrc1> <numDst> (<exec_size>) <ExMsgDesc> <Desc> <Src0> <Src1> <Dst>
```
## Notes
|
