[clang] [llvm] [AMDGPU] Introduce asyncmark/wait intrinsics (PR #180467)

[Sameer Sahasrabuddhe via cfe-commits]

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@@ -946,8 +970,8 @@ class WaitcntBrackets {
   // TODO: Could we track SCC alongside SGPRs so it's not longer a special case?
 
   struct VMEMInfo {
-    // Scores for all instruction counters.
-    std::array<unsigned, NUM_INST_CNTS> Scores = {0};
+    // Scores for all instruction counters. Zero-initialized.
+    CounterValueArray Scores{};
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ssahasra wrote:

It wasn't wrong. But when changing the `typedef`, it was a legitimate apportunity to "clean up" the explicit initializer with a default initializer.

https://github.com/llvm/llvm-project/pull/180467