[llvm] [AMDGPU][SIInsertWaitcnts][NFC] Drop MaxCounter member variable (PR #181092)

[Ryan Mitchell via llvm-commits]

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@@ -2999,7 +3014,8 @@ bool WaitcntBrackets::mergeAsyncMarks(ArrayRef<MergeInfo> MergeInfos,
   unsigned MergeCount = std::min(OtherSize, OurSize);
   assert(OurSize == MaxSize);
   for (unsigned Idx = 1; Idx <= MergeCount; ++Idx) {
-    for (auto T : inst_counter_types(Context->MaxCounter)) {
+    for (auto T : inst_counter_types(
+             getMaxCounter(*Context->ST, Context->IsExpertMode))) {
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RyanRio wrote:

Nit - You could move this getMaxCounter call above the outer loop

https://github.com/llvm/llvm-project/pull/181092