diff --git a/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx.PlatformNotSupported.cs b/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx.PlatformNotSupported.cs
index 866cd1f25eee..d6597cfb5645 100644
--- a/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx.PlatformNotSupported.cs
+++ b/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx.PlatformNotSupported.cs
@@ -761,22 +761,22 @@ internal Avx() { }
         /// __m128 _mm_permutevar_ps (__m128 a, __m128i b)
         ///   VPERMILPS xmm, xmm, xmm/m128
         /// </summary>
-        public static Vector128<float> PermuteVar(Vector128<float> left, Vector128<float> mask) { throw new PlatformNotSupportedException(); }
+        public static Vector128<float> PermuteVar(Vector128<float> left, Vector128<int> control) { throw new PlatformNotSupportedException(); }
         /// <summary>
         /// __m128d _mm_permutevar_pd (__m128d a, __m128i b)
         ///   VPERMILPD xmm, xmm, xmm/m128
         /// </summary>
-        public static Vector128<double> PermuteVar(Vector128<double> left, Vector128<double> mask) { throw new PlatformNotSupportedException(); }
+        public static Vector128<double> PermuteVar(Vector128<double> left, Vector128<long> control) { throw new PlatformNotSupportedException(); }
         /// <summary>
         /// __m256 _mm256_permutevar_ps (__m256 a, __m256i b)
         ///   VPERMILPS ymm, ymm, ymm/m256
         /// </summary>
-        public static Vector256<float> PermuteVar(Vector256<float> left, Vector256<float> mask) { throw new PlatformNotSupportedException(); }
+        public static Vector256<float> PermuteVar(Vector256<float> left, Vector256<int> control) { throw new PlatformNotSupportedException(); }
         /// <summary>
         /// __m256d _mm256_permutevar_pd (__m256d a, __m256i b)
         ///   VPERMILPD ymm, ymm, ymm/m256
         /// </summary>
-        public static Vector256<double> PermuteVar(Vector256<double> left, Vector256<double> mask) { throw new PlatformNotSupportedException(); }
+        public static Vector256<double> PermuteVar(Vector256<double> left, Vector256<long> control) { throw new PlatformNotSupportedException(); }
 
         /// <summary>
         /// __m256 _mm256_rcp_ps (__m256 a)
diff --git a/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx.cs b/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx.cs
index 37b355d6bf13..3cb6849a6ba2 100644
--- a/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx.cs
+++ b/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx.cs
@@ -922,22 +922,22 @@ public static Vector256<T> Permute2x128<T>(Vector256<T> left, Vector256<T> right
         /// __m128 _mm_permutevar_ps (__m128 a, __m128i b)
         ///   VPERMILPS xmm, xmm, xmm/m128
         /// </summary>
-        public static Vector128<float> PermuteVar(Vector128<float> left, Vector128<float> mask) => PermuteVar(left, mask);
+        public static Vector128<float> PermuteVar(Vector128<float> left, Vector128<int> control) => PermuteVar(left, control);
         /// <summary>
         /// __m128d _mm_permutevar_pd (__m128d a, __m128i b)
         ///   VPERMILPD xmm, xmm, xmm/m128
         /// </summary>
-        public static Vector128<double> PermuteVar(Vector128<double> left, Vector128<double> mask) => PermuteVar(left, mask);
+        public static Vector128<double> PermuteVar(Vector128<double> left, Vector128<long> control) => PermuteVar(left, control);
         /// <summary>
         /// __m256 _mm256_permutevar_ps (__m256 a, __m256i b)
         ///   VPERMILPS ymm, ymm, ymm/m256
         /// </summary>
-        public static Vector256<float> PermuteVar(Vector256<float> left, Vector256<float> mask) => PermuteVar(left, mask);
+        public static Vector256<float> PermuteVar(Vector256<float> left, Vector256<int> control) => PermuteVar(left, control);
         /// <summary>
         /// __m256d _mm256_permutevar_pd (__m256d a, __m256i b)
         ///   VPERMILPD ymm, ymm, ymm/m256
         /// </summary>
-        public static Vector256<double> PermuteVar(Vector256<double> left, Vector256<double> mask) => PermuteVar(left, mask);
+        public static Vector256<double> PermuteVar(Vector256<double> left, Vector256<long> control) => PermuteVar(left, control);
 
         /// <summary>
         /// __m256 _mm256_rcp_ps (__m256 a)
diff --git a/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx2.PlatformNotSupported.cs b/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx2.PlatformNotSupported.cs
index 75177a558308..ee07f0928fc2 100644
--- a/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx2.PlatformNotSupported.cs
+++ b/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx2.PlatformNotSupported.cs
@@ -1278,17 +1278,17 @@ internal Avx2() { }
         /// __m256i _mm256_permutevar8x32_epi32 (__m256i a, __m256i idx)
         ///   VPERMD ymm, ymm/m256, imm8
         /// </summary>
-        public static Vector256<int> PermuteVar8x32(Vector256<int> left, Vector256<int> mask) { throw new PlatformNotSupportedException(); }
+        public static Vector256<int> PermuteVar8x32(Vector256<int> left, Vector256<int> control) { throw new PlatformNotSupportedException(); }
         /// <summary>
         /// __m256i _mm256_permutevar8x32_epi32 (__m256i a, __m256i idx)
         ///   VPERMD ymm, ymm/m256, imm8
         /// </summary>
-        public static Vector256<uint> PermuteVar8x32(Vector256<uint> left, Vector256<uint> mask) { throw new PlatformNotSupportedException(); }
+        public static Vector256<uint> PermuteVar8x32(Vector256<uint> left, Vector256<uint> control) { throw new PlatformNotSupportedException(); }
         /// <summary>
         /// __m256 _mm256_permutevar8x32_ps (__m256 a, __m256i idx)
         ///   VPERMPS ymm, ymm/m256, imm8
         /// </summary>
-        public static Vector256<float> PermuteVar8x32(Vector256<float> left, Vector256<float> mask) { throw new PlatformNotSupportedException(); }
+        public static Vector256<float> PermuteVar8x32(Vector256<float> left, Vector256<int> control) { throw new PlatformNotSupportedException(); }
 
         /// <summary>
         /// __m256i _mm256_sll_epi16 (__m256i a, __m128i count)
diff --git a/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx2.cs b/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx2.cs
index 64406b4e128e..1f92cbf23869 100644
--- a/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx2.cs
+++ b/src/Common/src/CoreLib/System/Runtime/Intrinsics/X86/Avx2.cs
@@ -1284,17 +1284,17 @@ public static Vector256<T> BroadcastScalarToVector256<T>(Vector128<T> value) whe
         /// __m256i _mm256_permutevar8x32_epi32 (__m256i a, __m256i idx)
         ///   VPERMD ymm, ymm/m256, imm8
         /// </summary>
-        public static Vector256<int> PermuteVar8x32(Vector256<int> left, Vector256<int> mask) => PermuteVar8x32(left, mask);
+        public static Vector256<int> PermuteVar8x32(Vector256<int> left, Vector256<int> control) => PermuteVar8x32(left, control);
         /// <summary>
         /// __m256i _mm256_permutevar8x32_epi32 (__m256i a, __m256i idx)
         ///   VPERMD ymm, ymm/m256, imm8
         /// </summary>
-        public static Vector256<uint> PermuteVar8x32(Vector256<uint> left, Vector256<uint> mask) => PermuteVar8x32(left, mask);
+        public static Vector256<uint> PermuteVar8x32(Vector256<uint> left, Vector256<uint> control) => PermuteVar8x32(left, control);
         /// <summary>
         /// __m256 _mm256_permutevar8x32_ps (__m256 a, __m256i idx)
         ///   VPERMPS ymm, ymm/m256, imm8
         /// </summary>
-        public static Vector256<float> PermuteVar8x32(Vector256<float> left, Vector256<float> mask) => PermuteVar8x32(left, mask);
+        public static Vector256<float> PermuteVar8x32(Vector256<float> left, Vector256<int> control) => PermuteVar8x32(left, control);
 
         /// <summary>
         /// __m256i _mm256_sll_epi16 (__m256i a, __m128i count)