c33770d87f
The description has been updated to reflect AMDGPU MC changes: - enabled literals for src0 of v_fmaak_f*, v_fmamk_f*, v_madak_f32, v_madmk_f32; - enabled global_atomic_fcmpswap and global_atomic_fcmpswap_x2; - enabled dlc with flat_atomic* and global_atomic_*. Bug fixing and improvements: - enabled s_wait_idle; - enabled s_waitcnt_depctr; - added description of s_waitcnt_depctr syntactic sugar; - disabled SYSMSG_OP_HOST_TRAP_ACK (it is not supported on GFX10); - corrected description of lgkmcnt (accept values from 0 to 63).
65 lines
3.0 KiB
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65 lines
3.0 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_gfx10_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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High Bits Low Bits Description Value Range
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========== ========= ================================================ ============
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15:14 3:0 VM_CNT: vector memory operations count. 0..63
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\- 6:4 EXP_CNT: export count. 0..7
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\- 13:8 LGKM_CNT: LDS, GDS, Constant and Message count. 0..63
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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 0..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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*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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