waitcntΒΆ
Counts of outstanding instructions to wait for.
The bits of this operand have the following meaning:
Bits
Description
3:0
VM_CNT: vector memory operations count.
6:4
EXP_CNT: export count.
12:8
LGKM_CNT: LDS, GDS, Constant and Message count.
This operand may be specified as a positive 16-bit integer_number or as a combination of the following symbolic helpers:
Syntax
Description
vmcnt(<N>)
VM_CNT value. N must not exceed the largest VM_CNT value.
expcnt(<N>)
EXP_CNT value. N must not exceed the largest EXP_CNT value.
lgkmcnt(<N>)
LGKM_CNT value. N must not exceed the largest LGKM_CNT value.
vmcnt_sat(<N>)
VM_CNT value computed as min(N, the largest VM_CNT value).
expcnt_sat(<N>)
EXP_CNT value computed as min(N, the largest EXP_CNT value).
lgkmcnt_sat(<N>)
LGKM_CNT value computed as min(N, the largest LGKM_CNT value).
These helpers may be specified in any order. Ampersands and commas may be used as optional separators.
N is either an integer number or an absolute expression.
Examples:
s_waitcnt 0
s_waitcnt vmcnt(1)
s_waitcnt expcnt(2) lgkmcnt(3)
s_waitcnt vmcnt(1) expcnt(2) lgkmcnt(3)
s_waitcnt vmcnt(1), expcnt(2), lgkmcnt(3)
s_waitcnt vmcnt(1) & lgkmcnt_sat(100) & expcnt(2)