[llvm] [Codegen] (NFC) Faster algorithm for MachineBlockPlacement (PR #91843)

[William Junda Huang via llvm-commits]

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@@ -3118,7 +3158,16 @@ bool MachineBlockPlacement::maybeTailDuplicateBlock(
 
         // Handle the filter set
         if (BlockFilter) {
-          BlockFilter->remove(RemBB);
+          auto It = llvm::find(*BlockFilter, RemBB);
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huangjd wrote:

Done.

https://github.com/llvm/llvm-project/pull/91843