[llvm] [LoopInterchange] Hoist isCompuatableLoopNest() in the control flow (PR #124247)

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``````````bash
git-clang-format --diff df3bc54eff3baaa0ad2492b858029bcbf258a5d7 889bbf61ac94b39d8da97daad5f1cc0f117f0e72 --extensions cpp -- llvm/lib/Transforms/Scalar/LoopInterchange.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/Scalar/LoopInterchange.cpp b/llvm/lib/Transforms/Scalar/LoopInterchange.cpp
index e995db1f5c..2557dbe53b 100644
--- a/llvm/lib/Transforms/Scalar/LoopInterchange.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopInterchange.cpp
@@ -272,7 +272,8 @@ static bool hasSupportedLoopDepth(SmallVectorImpl<Loop *> &LoopList,
   return true;
 }
 
-static bool isComputableLoopNest(ScalarEvolution *SE, ArrayRef<Loop *> LoopList) {
+static bool isComputableLoopNest(ScalarEvolution *SE,
+                                 ArrayRef<Loop *> LoopList) {
   for (Loop *L : LoopList) {
     const SCEV *ExitCountOuter = SE->getBackedgeTakenCount(L);
     if (isa<SCEVCouldNotCompute>(ExitCountOuter)) {
@@ -1752,11 +1753,11 @@ PreservedAnalyses LoopInterchangePass::run(LoopNest &LN,
   // Ensure minimum depth of the loop nest to do the interchange.
   if (!hasSupportedLoopDepth(LoopList, ORE))
     return PreservedAnalyses::all();
-  
+
   // Ensure computable loop nest.
   if (!isComputableLoopNest(&AR.SE, LoopList)) {
-      LLVM_DEBUG(dbgs() << "Not valid loop candidate for interchange\n");
-      return PreservedAnalyses::all();
+    LLVM_DEBUG(dbgs() << "Not valid loop candidate for interchange\n");
+    return PreservedAnalyses::all();
   }
 
   DependenceInfo DI(&F, &AR.AA, &AR.SE, &AR.LI);

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https://github.com/llvm/llvm-project/pull/124247