[llvm] [LoopInterchange] Constrain LI within supported loop nest depth (PR #118656)

[Madhur Amilkanthwar via llvm-commits]

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@@ -239,10 +242,12 @@ static void populateWorklist(Loop &L, LoopVector &LoopList) {
   LoopList.push_back(CurrentLoop);
 }
 
-static bool hasMinimumLoopDepth(SmallVectorImpl<Loop *> &LoopList) {
+static bool hasSupportedLoopDepth(SmallVectorImpl<Loop *> &LoopList) {
   unsigned LoopNestDepth = LoopList.size();
-  if (LoopNestDepth < 2) {
-    LLVM_DEBUG(dbgs() << "Loop doesn't contain minimum nesting level.\n");
+  if (LoopNestDepth < MinLoopNestDepth || LoopNestDepth > MaxLoopNestDepth) {
+    LLVM_DEBUG(dbgs() << "Unsupported depth of loop nest " << LoopNestDepth
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madhur13490 wrote:

Done

https://github.com/llvm/llvm-project/pull/118656