[llvm-branch-commits] [llvm] [CodeGen] Limit number of analyzed predecessors (PR #142584)

[Alexis Engelke via llvm-branch-commits]

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@@ -1592,6 +1603,11 @@ bool MachineBlockPlacement::hasBetterLayoutPredecessor(
   BlockFrequency CandidateEdgeFreq = MBFI->getBlockFreq(BB) * RealSuccProb;
   bool BadCFGConflict = false;
 
+  // Compile-time optimization: runtime is quadratic in the number of
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aengelke wrote:

Done

https://github.com/llvm/llvm-project/pull/142584