[llvm] Reland "MTM: fix issues after cursory reading" (PR #101191)

[Sergei Barannikov via llvm-commits]

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@@ -546,7 +540,7 @@ MachineTraceMetrics::Ensemble::invalidate(const MachineBasicBlock *BadMBB) {
   if (BadTBI.hasValidHeight()) {
     BadTBI.invalidateHeight();
     WorkList.push_back(BadMBB);
-    do {
+    while (!WorkList.empty()) {
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s-barannikov wrote:

No reason to change this either, especially when it is clear that the container is non-empty on entry.


https://github.com/llvm/llvm-project/pull/101191