================
@@ -975,6 +999,14 @@ class WaitcntBrackets {
// Store representative LDS DMA operations. The only useful info here is
// alias info. One store is kept per unique AAInfo.
SmallVector<const MachineInstr *> LDSDMAStores;
+
+ // State of all counters at each async mark encountered so far.
+ SmallVector<CounterValueArray> AsyncMarks;
+ static constexpr unsigned MaxAsyncMarks = 16;
----------------
ssahasra wrote:
AsyncMarks is a FIFO. Constantly enforcing MaxAsyncMarks as a data-structure
limit would require removing elements from the front. Instead we treat
MaxAsyncMarks as a soft algorithmic limit, which we enforce only when it
matters.
The choice of value was explained in a different place. In #181095 I have now
moved that explanation to this place.
https://github.com/llvm/llvm-project/pull/180467
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