diff --git a/llvm/include/llvm/CodeGen/BasicTTIImpl.h b/llvm/include/llvm/CodeGen/BasicTTIImpl.h
--- a/llvm/include/llvm/CodeGen/BasicTTIImpl.h
+++ b/llvm/include/llvm/CodeGen/BasicTTIImpl.h
@@ -1214,8 +1214,8 @@
       if (RetTy->isVectorTy()) {
         if (ScalarizationCostPassed == std::numeric_limits<unsigned>::max())
           ScalarizationCost = getScalarizationOverhead(RetTy, true, false);
-        ScalarCalls = std::max(
-            ScalarCalls, (unsigned)cast<VectorType>(RetTy)->getNumElements());
+        ScalarCalls =
+            std::max(ScalarCalls, cast<VectorType>(RetTy)->getNumElements());
         ScalarRetTy = RetTy->getScalarType();
       }
       SmallVector<Type *, 4> ScalarTys;
@@ -1224,8 +1224,8 @@
         if (Ty->isVectorTy()) {
           if (ScalarizationCostPassed == std::numeric_limits<unsigned>::max())
             ScalarizationCost += getScalarizationOverhead(Ty, false, true);
-          ScalarCalls = std::max(
-              ScalarCalls, (unsigned)cast<VectorType>(Ty)->getNumElements());
+          ScalarCalls =
+              std::max(ScalarCalls, cast<VectorType>(Ty)->getNumElements());
           Ty = Ty->getScalarType();
         }
         ScalarTys.push_back(Ty);
@@ -1572,8 +1572,7 @@
           if (ScalarizationCostPassed == std::numeric_limits<unsigned>::max())
             ScalarizationCost += getScalarizationOverhead(Tys[i], false, true);
           ScalarCalls =
-              std::max(ScalarCalls,
-                       (unsigned)cast<VectorType>(Tys[i])->getNumElements());
+              std::max(ScalarCalls, cast<VectorType>(Tys[i])->getNumElements());
         }
       }
 
diff --git a/llvm/include/llvm/IR/DerivedTypes.h b/llvm/include/llvm/IR/DerivedTypes.h
--- a/llvm/include/llvm/IR/DerivedTypes.h
+++ b/llvm/include/llvm/IR/DerivedTypes.h
@@ -420,7 +420,7 @@
 
   /// For scalable vectors, this will return the minimum number of elements
   /// in the vector.
-  uint64_t getNumElements() const { return NumElements; }
+  unsigned getNumElements() const { return NumElements; }
   Type *getElementType() const { return ContainedType; }
 
   /// This static method is the primary way to construct an VectorType.
diff --git a/llvm/lib/IR/Function.cpp b/llvm/lib/IR/Function.cpp
--- a/llvm/lib/IR/Function.cpp
+++ b/llvm/lib/IR/Function.cpp
@@ -1075,8 +1075,7 @@
     return Tys[D.getOverloadArgNumber()];
   case IITDescriptor::ScalableVecArgument: {
     auto *Ty = cast<VectorType>(DecodeFixedType(Infos, Tys, Context));
-    return VectorType::get(Ty->getElementType(),
-                           {(unsigned)Ty->getNumElements(), true});
+    return VectorType::get(Ty->getElementType(), {Ty->getNumElements(), true});
   }
   }
   llvm_unreachable("unhandled");
diff --git a/mlir/lib/Conversion/StandardToLLVM/StandardToLLVM.cpp b/mlir/lib/Conversion/StandardToLLVM/StandardToLLVM.cpp
--- a/mlir/lib/Conversion/StandardToLLVM/StandardToLLVM.cpp
+++ b/mlir/lib/Conversion/StandardToLLVM/StandardToLLVM.cpp
@@ -1802,10 +1802,10 @@
         op, operands, typeConverter,
         [&](LLVM::LLVMType llvmVectorTy, ValueRange operands) {
           auto splatAttr = SplatElementsAttr::get(
-              mlir::VectorType::get({(unsigned)cast<llvm::VectorType>(
-                                         llvmVectorTy.getUnderlyingType())
-                                         ->getNumElements()},
-                                    floatType),
+              mlir::VectorType::get(
+                  {cast<llvm::VectorType>(llvmVectorTy.getUnderlyingType())
+                       ->getNumElements()},
+                  floatType),
               floatOne);
           auto one =
               rewriter.create<LLVM::ConstantOp>(loc, llvmVectorTy, splatAttr);