[PATCH] D134490: [NFC] check for UnreachableInst first as it is cheaper compared to getTerminatingDeoptimizeCall

[Aditya Kumar via Phabricator via llvm-commits]

hiraditya created this revision.
hiraditya added a reviewer: craig.topper.
Herald added a subscriber: StephenFan.
Herald added a project: All.
hiraditya requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

https://reviews.llvm.org/D134490

Files:
  llvm/lib/Transforms/Utils/BasicBlockUtils.cpp


Index: llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
===================================================================
--- llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
+++ llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
@@ -501,8 +501,8 @@
   unsigned Depth = 0;
   while (BB && Depth++ < MaxDeoptOrUnreachableSuccessorCheckDepth &&
          VisitedBlocks.insert(BB).second) {
-    if (BB->getTerminatingDeoptimizeCall() ||
-        isa<UnreachableInst>(BB->getTerminator()))
+    if (isa<UnreachableInst>(BB->getTerminator() ||
+        BB->getTerminatingDeoptimizeCall()))
       return true;
     BB = BB->getUniqueSuccessor();
   }


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