diff --git a/Ryujinx.Tests/Cpu/CpuTestSimdImm.cs b/Ryujinx.Tests/Cpu/CpuTestSimdImm.cs
new file mode 100644
index 000000000..bb6e11739
--- /dev/null
+++ b/Ryujinx.Tests/Cpu/CpuTestSimdImm.cs
@@ -0,0 +1,267 @@
+#define SimdImm
+
+using NUnit.Framework;
+
+using System.Collections.Generic;
+using System.Runtime.Intrinsics;
+
+namespace Ryujinx.Tests.Cpu
+{
+    [Category("SimdImm")]
+    public sealed class CpuTestSimdImm : CpuTest
+    {
+#if SimdImm
+
+#region "Helper methods"
+        // abcdefgh -> aaaaaaaabbbbbbbbccccccccddddddddeeeeeeeeffffffffgggggggghhhhhhhh
+        private static ulong ExpandImm8(byte imm8)
+        {
+            ulong imm64 = 0ul;
+
+            for (int i = 0, j = 0; i < 8; i++, j += 8)
+            {
+                if (((imm8 >> i) & 0b1) != 0)
+                {
+                    imm64 |= 0b11111111ul << j;
+                }
+            }
+
+            return imm64;
+        }
+
+        // aaaaaaaabbbbbbbbccccccccddddddddeeeeeeeeffffffffgggggggghhhhhhhh -> abcdefgh
+        private static byte ShrinkImm64(ulong imm64)
+        {
+            byte imm8 = 0;
+
+            for (int i = 0, j = 0; i < 8; i++, j += 8)
+            {
+                if (((imm64 >> j) & 0b11111111ul) != 0ul) // Note: no format check.
+                {
+                    imm8 |= (byte)(0b1 << i);
+                }
+            }
+
+            return imm8;
+        }
+#endregion
+
+#region "ValueSource (Types)"
+        private static IEnumerable<byte> _8BIT_IMM_()
+        {
+            yield return 0x00;
+            yield return 0x7F;
+            yield return 0x80;
+            yield return 0xFF;
+
+            for (int cnt = 1; cnt <= RndCntImm8; cnt++)
+            {
+                byte imm8 = TestContext.CurrentContext.Random.NextByte();
+
+                yield return imm8;
+            }
+        }
+
+        private static IEnumerable<ulong> _64BIT_IMM_()
+        {
+            yield return ExpandImm8(0x00);
+            yield return ExpandImm8(0x7F);
+            yield return ExpandImm8(0x80);
+            yield return ExpandImm8(0xFF);
+
+            for (int cnt = 1; cnt <= RndCntImm64; cnt++)
+            {
+                byte imm8 = TestContext.CurrentContext.Random.NextByte();
+
+                yield return ExpandImm8(imm8);
+            }
+        }
+#endregion
+
+#region "ValueSource (Opcodes)"
+        private static uint[] _Movi_V_8bit_()
+        {
+            return new uint[]
+            {
+                0x0F00E400u // MOVI V0.8B, #0
+            };
+        }
+
+        private static uint[] _Movi_Mvni_V_16bit_shifted_imm_()
+        {
+            return new uint[]
+            {
+                0x0F008400u, // MOVI V0.4H, #0
+                0x2F008400u  // MVNI V0.4H, #0
+            };
+        }
+
+        private static uint[] _Movi_Mvni_V_32bit_shifted_imm_()
+        {
+            return new uint[]
+            {
+                0x0F000400u, // MOVI V0.2S, #0
+                0x2F000400u  // MVNI V0.2S, #0
+            };
+        }
+
+        private static uint[] _Movi_Mvni_V_32bit_shifting_ones_()
+        {
+            return new uint[]
+            {
+                0x0F00C400u, // MOVI V0.2S, #0, MSL #8
+                0x2F00C400u  // MVNI V0.2S, #0, MSL #8
+            };
+        }
+
+        private static uint[] _Movi_V_64bit_scalar_()
+        {
+            return new uint[]
+            {
+                0x2F00E400u // MOVI D0, #0
+            };
+        }
+
+        private static uint[] _Movi_V_64bit_vector_()
+        {
+            return new uint[]
+            {
+                0x6F00E400u // MOVI V0.2D, #0
+            };
+        }
+#endregion
+
+        private const int RndCntImm8  = 2;
+        private const int RndCntImm64 = 2;
+
+        [Test, Pairwise]
+        public void Movi_V_8bit([ValueSource("_Movi_V_8bit_")] uint opcodes,
+                                [Values(0u)] uint rd,
+                                [ValueSource("_8BIT_IMM_")] byte imm8,
+                                [Values(0b0u, 0b1u)] uint q) // <8B, 16B>
+        {
+            uint abc   = (imm8 & 0xE0u) >> 5;
+            uint defgh = (imm8 & 0x1Fu);
+
+            opcodes |= ((rd & 31) << 0);
+            opcodes |= (abc << 16) | (defgh << 5);
+            opcodes |= ((q & 1) << 30);
+
+            ulong z = TestContext.CurrentContext.Random.NextULong();
+            Vector128<float> v0 = MakeVectorE1(q == 0u ? z : 0ul);
+
+            SingleOpcode(opcodes, v0: v0);
+
+            CompareAgainstUnicorn();
+        }
+
+        [Test, Pairwise]
+        public void Movi_Mvni_V_16bit_shifted_imm([ValueSource("_Movi_Mvni_V_16bit_shifted_imm_")] uint opcodes,
+                                                  [Values(0u)] uint rd,
+                                                  [ValueSource("_8BIT_IMM_")] byte imm8,
+                                                  [Values(0b0u, 0b1u)] uint amount, // <0, 8>
+                                                  [Values(0b0u, 0b1u)] uint q)      // <4H, 8H>
+        {
+            uint abc   = (imm8 & 0xE0u) >> 5;
+            uint defgh = (imm8 & 0x1Fu);
+
+            opcodes |= ((rd & 31) << 0);
+            opcodes |= (abc << 16) | (defgh << 5);
+            opcodes |= ((amount & 1) << 13);
+            opcodes |= ((q & 1) << 30);
+
+            ulong z = TestContext.CurrentContext.Random.NextULong();
+            Vector128<float> v0 = MakeVectorE1(q == 0u ? z : 0ul);
+
+            SingleOpcode(opcodes, v0: v0);
+
+            CompareAgainstUnicorn();
+        }
+
+        [Test, Pairwise]
+        public void Movi_Mvni_V_32bit_shifted_imm([ValueSource("_Movi_Mvni_V_32bit_shifted_imm_")] uint opcodes,
+                                                  [Values(0u)] uint rd,
+                                                  [ValueSource("_8BIT_IMM_")] byte imm8,
+                                                  [Values(0b00u, 0b01u, 0b10u, 0b11u)] uint amount, // <0, 8, 16, 24>
+                                                  [Values(0b0u, 0b1u)] uint q)                      // <2S, 4S>
+        {
+            uint abc   = (imm8 & 0xE0u) >> 5;
+            uint defgh = (imm8 & 0x1Fu);
+
+            opcodes |= ((rd & 31) << 0);
+            opcodes |= (abc << 16) | (defgh << 5);
+            opcodes |= ((amount & 3) << 13);
+            opcodes |= ((q & 1) << 30);
+
+            ulong z = TestContext.CurrentContext.Random.NextULong();
+            Vector128<float> v0 = MakeVectorE1(q == 0u ? z : 0ul);
+
+            SingleOpcode(opcodes, v0: v0);
+
+            CompareAgainstUnicorn();
+        }
+
+        [Test, Pairwise]
+        public void Movi_Mvni_V_32bit_shifting_ones([ValueSource("_Movi_Mvni_V_32bit_shifting_ones_")] uint opcodes,
+                                                    [Values(0u)] uint rd,
+                                                    [ValueSource("_8BIT_IMM_")] byte imm8,
+                                                    [Values(0b0u, 0b1u)] uint amount, // <8, 16>
+                                                    [Values(0b0u, 0b1u)] uint q)      // <2S, 4S>
+        {
+            uint abc   = (imm8 & 0xE0u) >> 5;
+            uint defgh = (imm8 & 0x1Fu);
+
+            opcodes |= ((rd & 31) << 0);
+            opcodes |= (abc << 16) | (defgh << 5);
+            opcodes |= ((amount & 1) << 12);
+            opcodes |= ((q & 1) << 30);
+
+            ulong z = TestContext.CurrentContext.Random.NextULong();
+            Vector128<float> v0 = MakeVectorE1(q == 0u ? z : 0ul);
+
+            SingleOpcode(opcodes, v0: v0);
+
+            CompareAgainstUnicorn();
+        }
+
+        [Test, Pairwise]
+        public void Movi_V_64bit_scalar([ValueSource("_Movi_V_64bit_scalar_")] uint opcodes,
+                                        [Values(0u)] uint rd,
+                                        [ValueSource("_64BIT_IMM_")] ulong imm)
+        {
+            byte imm8 = ShrinkImm64(imm);
+
+            uint abc   = (imm8 & 0xE0u) >> 5;
+            uint defgh = (imm8 & 0x1Fu);
+
+            opcodes |= ((rd & 31) << 0);
+            opcodes |= (abc << 16) | (defgh << 5);
+
+            ulong z = TestContext.CurrentContext.Random.NextULong();
+            Vector128<float> v0 = MakeVectorE1(z);
+
+            SingleOpcode(opcodes, v0: v0);
+
+            CompareAgainstUnicorn();
+        }
+
+        [Test, Pairwise]
+        public void Movi_V_64bit_vector([ValueSource("_Movi_V_64bit_vector_")] uint opcodes,
+                                        [Values(0u)] uint rd,
+                                        [ValueSource("_64BIT_IMM_")] ulong imm)
+        {
+            byte imm8 = ShrinkImm64(imm);
+
+            uint abc   = (imm8 & 0xE0u) >> 5;
+            uint defgh = (imm8 & 0x1Fu);
+
+            opcodes |= ((rd & 31) << 0);
+            opcodes |= (abc << 16) | (defgh << 5);
+
+            SingleOpcode(opcodes);
+
+            CompareAgainstUnicorn();
+        }
+#endif
+    }
+}