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