[PATCH] D92882: [MBP] Prevent rotating a chain contains entry block

[Snehasish Kumar via Phabricator via llvm-commits]

snehasish added a comment.

Can we add a test for this?



================
Comment at: llvm/lib/CodeGen/MachineBlockPlacement.cpp:2392
+  // The entry block should always be the first BB in a function.
+  if (ChainHeaderBB == &F->front())
+    return;
----------------
Consider using the helper MachineBasicBlock::isEntryBlock here and above.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D92882/new/

https://reviews.llvm.org/D92882