[llvm] Add 3 way compare <=> integer intrinsics to Langref (PR #83227)

[Nikita Popov via llvm-commits]

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@@ -5235,6 +5235,25 @@ void Verifier::visitIntrinsicCall(Intrinsic::ID ID, CallBase &Call) {
     }
     break;
   }
+  case Intrinsic::ucmp:
+  case Intrinsic::scmp: {
+
+    Type *SrcTy = Call.getOperand(0)->getType();
+    Type *DestTy = Call.getType();
+
+    Check(SrcTy->isIntOrIntVectorTy(), "[u]scmp only operates on integers", Call);
+    Check(DestTy->isIntOrIntVectorTy(), "[u]scmp only produces integers", Call);
+    Check(DestTy->getScalarSizeInBits() >= 2, "DestTy must be at least 2 bits wide", Call);
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nikic wrote:

Could you please also add a test in llvm/test/Verifier to check this condition, and the one below?

https://github.com/llvm/llvm-project/pull/83227