[llvm] [MachineLoopInfo] Fix getLoopID to handle multi latches. (PR #106195)

[Freddy Ye via llvm-commits]

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@@ -1183,6 +1183,12 @@ void CodeGenPrepare::eliminateMostlyEmptyBlock(BasicBlock *BB) {
     }
   }
 
+  // Reserve loop Metadata.
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FreddyLeaf wrote:

[f58d536](https://github.com/llvm/llvm-project/pull/106195/commits/f58d536ebc343af5ec663d0d2fa3add0e0cb86de)

https://github.com/llvm/llvm-project/pull/106195