1..
2    **************************************************
3    *                                                *
4    *   Automatically generated file, do not edit!   *
5    *                                                *
6    **************************************************
7
8.. _amdgpu_synid8_waitcnt:
9
10waitcnt
11===========================
12
13Counts of outstanding instructions to wait for.
14
15The bits of this operand have the following meaning:
16
17   ===== ================================================ ============
18   Bits  Description                                      Value Range
19   ===== ================================================ ============
20   3:0   VM_CNT: vector memory operations count.          0..15
21   6:4   EXP_CNT: export count.                           0..7
22   11:8  LGKM_CNT: LDS, GDS, Constant and Message count.  0..15
23   ===== ================================================ ============
24
25This operand may be specified as one of the following:
26
27* An :ref:`integer_number<amdgpu_synid_integer_number>` or an :ref:`absolute_expression<amdgpu_synid_absolute_expression>`. The value must be in the range 0..0xFFFF.
28* A combination of *vmcnt*, *expcnt*, *lgkmcnt* and other values described below.
29
30    ====================== ======================================================================
31    Syntax                 Description
32    ====================== ======================================================================
33    vmcnt(<*N*>)           A VM_CNT value. *N* must not exceed the largest VM_CNT value.
34    expcnt(<*N*>)          An EXP_CNT value. *N* must not exceed the largest EXP_CNT value.
35    lgkmcnt(<*N*>)         An LGKM_CNT value. *N* must not exceed the largest LGKM_CNT value.
36    vmcnt_sat(<*N*>)       A VM_CNT value computed as min(*N*, the largest VM_CNT value).
37    expcnt_sat(<*N*>)      An EXP_CNT value computed as min(*N*, the largest EXP_CNT value).
38    lgkmcnt_sat(<*N*>)     An LGKM_CNT value computed as min(*N*, the largest LGKM_CNT value).
39    ====================== ======================================================================
40
41These values may be specified in any order. Spaces, ampersands and commas may be used as optional separators.
42
43*N* is either an
44:ref:`integer number<amdgpu_synid_integer_number>` or an
45:ref:`absolute expression<amdgpu_synid_absolute_expression>`.
46
47Examples:
48
49.. parsed-literal::
50
51    vm_cnt = 1
52    exp_cnt = 2
53    lgkm_cnt = 3
54    cnt = vm_cnt | (exp_cnt << 4) | (lgkm_cnt << 8)
55
56    s_waitcnt cnt
57    s_waitcnt 1 | (2 << 4) | (3 << 8)                          // the same as above
58    s_waitcnt vmcnt(1) expcnt(2) lgkmcnt(3)                    // the same as above
59    s_waitcnt vmcnt(vm_cnt) expcnt(exp_cnt) lgkmcnt(lgkm_cnt)  // the same as above
60
61    s_waitcnt vmcnt(1)
62    s_waitcnt expcnt(2) lgkmcnt(3)
63    s_waitcnt vmcnt(1), expcnt(2), lgkmcnt(3)
64    s_waitcnt vmcnt(1) & lgkmcnt_sat(100) & expcnt(2)
65