[llvm] [CodeGen] Fix profiled triangular CFG threshold in MachineBlockPlacement (PR #188752)

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``````````diff
diff --git a/llvm/lib/CodeGen/MachineBlockPlacement.cpp b/llvm/lib/CodeGen/MachineBlockPlacement.cpp
index 7a6d90a68..73d040bda 100644
--- a/llvm/lib/CodeGen/MachineBlockPlacement.cpp
+++ b/llvm/lib/CodeGen/MachineBlockPlacement.cpp
@@ -1453,8 +1453,8 @@ getLayoutSuccessorProbThreshold(const MachineBasicBlock *BB) {
        *   (1-T) * Prob(BB->Succ) > T * Prob(BB->Pred)
        *   So T / (1 - T) = 2, Yielding T = 2/3
        *
-       * Then remap the user-controlled ProfileLikelyProb into 
-       * a triangle-specific threshold T. 
+       * Then remap the user-controlled ProfileLikelyProb into
+       * a triangle-specific threshold T.
        *   T = (2/3) * (ProfileLikelyProb / 50)
        *     = (2 * ProfileLikelyProb) / 150
        * This preserves T = 2/3 at ProfileLikelyProb = 50.

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https://github.com/llvm/llvm-project/pull/188752