[llvm] [LoopUnroll] Allow expensive trip count emitting which is estimated to be infinite (PR #79869)

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``````````bash
git-clang-format --diff 4a39d08908942b2d415db405844cbe4af73e75d4 7ef0291b6f8662ac52cc730958bec963c2570958 -- llvm/include/llvm/Transforms/Utils/LoopUtils.h llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp llvm/lib/Transforms/Utils/LoopUtils.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp b/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp
index 2f3d33121b..763e19afc7 100644
--- a/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp
@@ -1042,7 +1042,7 @@ bool llvm::computeUnrollCount(
       else
         UP.AllowExpensiveTripCount = true;
     } else if (isInfiniteTripCount(L))
-        UP.AllowExpensiveTripCount = true;
+      UP.AllowExpensiveTripCount = true;
   }
   UP.Runtime |= PragmaEnableUnroll || PragmaCount > 0 || UserUnrollCount;
   if (!UP.Runtime) {
diff --git a/llvm/lib/Transforms/Utils/LoopUtils.cpp b/llvm/lib/Transforms/Utils/LoopUtils.cpp
index 8d85d0ec88..3e1015de8f 100644
--- a/llvm/lib/Transforms/Utils/LoopUtils.cpp
+++ b/llvm/lib/Transforms/Utils/LoopUtils.cpp
@@ -905,7 +905,7 @@ bool llvm::isInfiniteTripCount(Loop *L) {
       std::swap(LoopWeight, ExitWeight);
 
     if (!ExitWeight)
-      return true;    
+      return true;
   }
   return false;
 }

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https://github.com/llvm/llvm-project/pull/79869