[llvm] llvm.lround: Update verifier to validate support of vector types. (PR #98950)

[Matt Arsenault via llvm-commits]

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@@ -5963,8 +5963,21 @@ void Verifier::visitIntrinsicCall(Intrinsic::ID ID, CallBase &Call) {
   case Intrinsic::llround: {
     Type *ValTy = Call.getArgOperand(0)->getType();
     Type *ResultTy = Call.getType();
-    Check(!ValTy->isVectorTy() && !ResultTy->isVectorTy(),
-          "Intrinsic does not support vectors", &Call);
+    Check(
+        ValTy->isFPOrFPVectorTy() && ResultTy->isIntOrIntVectorTy(),
+        "llvm.lround, llvm.llround: argument must be floating-point or vector "
+        "of floating-points, and result must be integer or vector of integers",
+        &Call);
+    Check(
+        ValTy->isVectorTy() == ResultTy->isVectorTy(),
+        "llvm.lround, llvm.llround: argument and result disagree on vector use",
+        &Call);
+    if (ValTy->isVectorTy()) {
+      Check(cast<VectorType>(ValTy)->getElementCount() ==
+                cast<VectorType>(ResultTy)->getElementCount(),
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arsenm wrote:

dyn_cast instead of isVectorTy + 2 x cast 

https://github.com/llvm/llvm-project/pull/98950