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66 lines
2.9 KiB
ReStructuredText
66 lines
2.9 KiB
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..
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**************************************************
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* *
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* Automatically generated file, do not edit! *
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* *
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**************************************************
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.. _amdgpu_synid_gfx8_waitcnt:
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waitcnt
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=======
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Counts of outstanding instructions to wait for.
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The bits of this operand have the following meaning:
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===== ================================================ ============
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Bits Description Value Range
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===== ================================================ ============
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3:0 VM_CNT: vector memory operations count. 0..15
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6:4 EXP_CNT: export count. 0..7
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11:8 LGKM_CNT: LDS, GDS, Constant and Message count. 0..15
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===== ================================================ ============
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This operand may be specified as one of the following:
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* An :ref:`integer_number<amdgpu_synid_integer_number>` or an :ref:`absolute_expression<amdgpu_synid_absolute_expression>`. The value must be in the range from 0 to 0xFFFF.
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* A combination of *vmcnt*, *expcnt*, *lgkmcnt* and other values described below.
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====================== ======================================================================
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Syntax Description
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====================== ======================================================================
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vmcnt(<*N*>) A VM_CNT value. *N* must not exceed the largest VM_CNT value.
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expcnt(<*N*>) An EXP_CNT value. *N* must not exceed the largest EXP_CNT value.
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lgkmcnt(<*N*>) An LGKM_CNT value. *N* must not exceed the largest LGKM_CNT value.
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vmcnt_sat(<*N*>) A VM_CNT value computed as min(*N*, the largest VM_CNT value).
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expcnt_sat(<*N*>) An EXP_CNT value computed as min(*N*, the largest EXP_CNT value).
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lgkmcnt_sat(<*N*>) An LGKM_CNT value computed as min(*N*, the largest LGKM_CNT value).
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====================== ======================================================================
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These values may be specified in any order. Spaces, ampersands, and commas may be used as optional separators.
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If some values are omitted, the corresponding fields will default to their maximum value.
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*N* is either an
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:ref:`integer number<amdgpu_synid_integer_number>` or an
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:ref:`absolute expression<amdgpu_synid_absolute_expression>`.
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Examples:
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.. parsed-literal::
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vm_cnt = 1
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exp_cnt = 2
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lgkm_cnt = 3
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cnt = vm_cnt | (exp_cnt << 4) | (lgkm_cnt << 8)
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s_waitcnt cnt
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s_waitcnt 1 | (2 << 4) | (3 << 8) // the same as above
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s_waitcnt vmcnt(1) expcnt(2) lgkmcnt(3) // the same as above
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s_waitcnt vmcnt(vm_cnt) expcnt(exp_cnt) lgkmcnt(lgkm_cnt) // the same as above
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s_waitcnt vmcnt(1)
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s_waitcnt expcnt(2) lgkmcnt(3)
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s_waitcnt vmcnt(1), expcnt(2), lgkmcnt(3)
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s_waitcnt vmcnt(1) & lgkmcnt_sat(100) & expcnt(2)
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