diff --git a/llvm/lib/IR/Constants.cpp b/llvm/lib/IR/Constants.cpp
index b62d6ec3b1ab6c..26da7fae391b66 100644
--- a/llvm/lib/IR/Constants.cpp
+++ b/llvm/lib/IR/Constants.cpp
@@ -2235,8 +2235,8 @@ Constant *ConstantExpr::getPtrToInt(Constant *C, Type *DstTy,
          "PtrToInt destination must be integer or integer vector");
   assert(isa<VectorType>(C->getType()) == isa<VectorType>(DstTy));
   if (isa<VectorType>(C->getType()))
-    assert(cast<FixedVectorType>(C->getType())->getNumElements() ==
-               cast<FixedVectorType>(DstTy)->getNumElements() &&
+    assert(cast<VectorType>(C->getType())->getElementCount() ==
+               cast<VectorType>(DstTy)->getElementCount() &&
            "Invalid cast between a different number of vector elements");
   return getFoldedCast(Instruction::PtrToInt, C, DstTy, OnlyIfReduced);
 }
diff --git a/llvm/unittests/IR/ConstantsTest.cpp b/llvm/unittests/IR/ConstantsTest.cpp
index ad43fbcb0531f5..b764af6cafae15 100644
--- a/llvm/unittests/IR/ConstantsTest.cpp
+++ b/llvm/unittests/IR/ConstantsTest.cpp
@@ -134,6 +134,9 @@ TEST(ConstantsTest, PointerCast) {
   VectorType *Int8PtrVecTy = FixedVectorType::get(Int8PtrTy, 4);
   VectorType *Int32PtrVecTy = FixedVectorType::get(Int32PtrTy, 4);
   VectorType *Int64VecTy = FixedVectorType::get(Int64Ty, 4);
+  VectorType *Int8PtrScalableVecTy = ScalableVectorType::get(Int8PtrTy, 4);
+  VectorType *Int32PtrScalableVecTy = ScalableVectorType::get(Int32PtrTy, 4);
+  VectorType *Int64ScalableVecTy = ScalableVectorType::get(Int64Ty, 4);
 
   // ptrtoint i8* to i64
   EXPECT_EQ(
@@ -150,11 +153,23 @@ TEST(ConstantsTest, PointerCast) {
             ConstantExpr::getPointerCast(Constant::getNullValue(Int8PtrVecTy),
                                          Int64VecTy));
 
+  // ptrtoint <vscale x 4 x i8*> to <vscale x 4 x i64>
+  EXPECT_EQ(
+      Constant::getNullValue(Int64ScalableVecTy),
+      ConstantExpr::getPointerCast(Constant::getNullValue(Int8PtrScalableVecTy),
+                                   Int64ScalableVecTy));
+
   // bitcast <4 x i8*> to <4 x i32*>
   EXPECT_EQ(Constant::getNullValue(Int32PtrVecTy),
             ConstantExpr::getPointerCast(Constant::getNullValue(Int8PtrVecTy),
                                          Int32PtrVecTy));
 
+  // bitcast <vscale x 4 x i8*> to <vscale x 4 x i32*>
+  EXPECT_EQ(
+      Constant::getNullValue(Int32PtrScalableVecTy),
+      ConstantExpr::getPointerCast(Constant::getNullValue(Int8PtrScalableVecTy),
+                                   Int32PtrScalableVecTy));
+
   Type *Int32Ptr1Ty = Type::getInt32PtrTy(C, 1);
   ConstantInt *K = ConstantInt::get(Type::getInt64Ty(C), 1234);