[llvm] [LoopUnswitch] Allow i1 truncs in loop unswitch (PR #89738)

[Matthew Devereau via llvm-commits]

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@@ -1930,7 +1930,15 @@ llvm::hasPartialIVCondition(const Loop &L, unsigned MSSAThreshold,
   if (!TI || !TI->isConditional())
     return {};
 
-  auto *CondI = dyn_cast<CmpInst>(TI->getCondition());
+  Instruction *CondI = nullptr;
+  CondI = dyn_cast<CmpInst>(TI->getCondition());
+
+  if (!CondI) {
+    CondI = dyn_cast<TruncInst>(TI->getCondition());
+    if (CondI && CondI->getType() != Type::getInt1Ty(TI->getContext())) {
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MDevereau wrote:

Done

https://github.com/llvm/llvm-project/pull/89738