[PATCH] D80047: Don't tail merge EHPads

[Arthur Eubanks via Phabricator via llvm-commits]

aeubanks updated this revision to Diff 264384.
aeubanks added a comment.

Rebase


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D80047/new/

https://reviews.llvm.org/D80047

Files:
  llvm/lib/CodeGen/BranchFolding.cpp


Index: llvm/lib/CodeGen/BranchFolding.cpp
===================================================================
--- llvm/lib/CodeGen/BranchFolding.cpp
+++ llvm/lib/CodeGen/BranchFolding.cpp
@@ -1086,6 +1086,10 @@
       if (PBB->hasEHPadSuccessor())
         continue;
 
+      // Skip landing pads, can't tail merge these.
+      if (PBB->isEHPad())
+        continue;
+
       // After block placement, only consider predecessors that belong to the
       // same loop as IBB.  The reason is the same as above when skipping loop
       // header.


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