[llvm] [AMDGPU] Model ordered XDL writes in expert scheduling (PR #218326)

[via llvm-commits]

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@@ -751,6 +767,9 @@ class WaitcntBrackets {
   struct VMEMInfo {
     // Scores for all instruction counters. Zero-initialized.
     CounterValueArray Scores{};
+    // Later ordered XDL writes that must remain outstanding while this
+    // VA_VDST write is pending.
+    unsigned NumOrderedXDLsAfterWrite = 0;
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vporpo wrote:

Not sure we should add a new field to this struct. How about using a separate map from VMEMID to NumOrderedXDLSAfterWrite ?

https://github.com/llvm/llvm-project/pull/218326