| .. |
| ************************************************** |
| * * |
| * Automatically generated file, do not edit! * |
| * * |
| ************************************************** |
| |
| .. _amdgpu_synid_gfx90a_waitcnt: |
| |
| waitcnt |
| ======= |
| |
| Counts of outstanding instructions to wait for. |
| |
| The bits of this operand have the following meaning: |
| |
| ========== ========= ================================================ ============ |
| High Bits Low Bits Description Value Range |
| ========== ========= ================================================ ============ |
| 15:14 3:0 VM_CNT: vector memory operations count. 0..63 |
| \- 6:4 EXP_CNT: export count. 0..7 |
| \- 11:8 LGKM_CNT: LDS, GDS, Constant and Message count. 0..15 |
| ========== ========= ================================================ ============ |
| |
| This operand may be specified as one of the following: |
| |
| * 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. |
| * A combination of *vmcnt*, *expcnt*, *lgkmcnt* and other values described below. |
| |
| ====================== ====================================================================== |
| Syntax Description |
| ====================== ====================================================================== |
| vmcnt(<*N*>) A VM_CNT value. *N* must not exceed the largest VM_CNT value. |
| expcnt(<*N*>) An EXP_CNT value. *N* must not exceed the largest EXP_CNT value. |
| lgkmcnt(<*N*>) An LGKM_CNT value. *N* must not exceed the largest LGKM_CNT value. |
| vmcnt_sat(<*N*>) A VM_CNT value computed as min(*N*, the largest VM_CNT value). |
| expcnt_sat(<*N*>) An EXP_CNT value computed as min(*N*, the largest EXP_CNT value). |
| lgkmcnt_sat(<*N*>) An LGKM_CNT value computed as min(*N*, the largest LGKM_CNT value). |
| ====================== ====================================================================== |
| |
| These values may be specified in any order. Spaces, ampersands, and commas may be used as optional separators. |
| If some values are omitted, the corresponding fields will default to their maximum value. |
| |
| *N* is either an |
| :ref:`integer number<amdgpu_synid_integer_number>` or an |
| :ref:`absolute expression<amdgpu_synid_absolute_expression>`. |
| |
| Examples: |
| |
| .. parsed-literal:: |
| |
| vm_cnt = 1 |
| exp_cnt = 2 |
| lgkm_cnt = 3 |
| cnt = vm_cnt | (exp_cnt << 4) | (lgkm_cnt << 8) |
| |
| s_waitcnt cnt |
| s_waitcnt 1 | (2 << 4) | (3 << 8) // the same as above |
| s_waitcnt vmcnt(1) expcnt(2) lgkmcnt(3) // the same as above |
| s_waitcnt vmcnt(vm_cnt) expcnt(exp_cnt) lgkmcnt(lgkm_cnt) // the same as above |
| |
| s_waitcnt vmcnt(1) |
| s_waitcnt expcnt(2) lgkmcnt(3) |
| s_waitcnt vmcnt(1), expcnt(2), lgkmcnt(3) |
| s_waitcnt vmcnt(1) & lgkmcnt_sat(100) & expcnt(2) |