[llvm] 1ce2015 - [NFC] check for UnreachableInst first as it is cheaper compared to getTerminatingDeoptimizeCall

[via llvm-commits]

Author: AdityaK
Date: 2023-04-28T15:29:44-07:00
New Revision: 1ce2015f7eb0aadfecf70d62d3c520e6d54823ce

URL: https://github.com/llvm/llvm-project/commit/1ce2015f7eb0aadfecf70d62d3c520e6d54823ce
DIFF: https://github.com/llvm/llvm-project/commit/1ce2015f7eb0aadfecf70d62d3c520e6d54823ce.diff

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

Reviewers: craig.topper, aeubanks, Peter
Differential Revision: https://reviews.llvm.org/D134490

Added: 
    

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

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp b/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
index 7509c482ee32..5a66100ca9ea 100644
--- a/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
+++ b/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
@@ -600,8 +600,8 @@ bool llvm::IsBlockFollowedByDeoptOrUnreachable(const BasicBlock *BB) {
   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();
   }