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Update the vector types to support having char as the element type #128116

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Update the vector types to support having char as the element type #128116

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a811923
Have the Vector types support char on the managed side
tannergooding May 12, 2026
a072454
Have the Vector types support char in RyuJIT
tannergooding May 13, 2026
7806b8d
Have the Vector types support char in Mono
tannergooding May 13, 2026
7fc7448
Add tests covering char for the vector types
tannergooding May 13, 2026
1df7629
Responding to PR feedback
tannergooding May 13, 2026
54b2f98
Remove a test that was checking Vector<char> was unsupported
tannergooding May 13, 2026
d06fd39
Fixup some test templates to work with char
tannergooding May 14, 2026
fe59aea
Fix test templates to work with char as a vector element type
tannergooding May 14, 2026
70ff44e
Ensure mono-llvm handles char as a simd element type
tannergooding May 15, 2026
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10 changes: 6 additions & 4 deletions src/coreclr/jit/importercalls.cpp
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Expand Up @@ -3176,6 +3176,7 @@ GenTree* Compiler::impIntrinsic(CORINFO_CLASS_HANDLE clsHnd,

switch (simdBaseJitType)
{
case CORINFO_TYPE_CHAR:
case CORINFO_TYPE_BYTE:
case CORINFO_TYPE_UBYTE:
case CORINFO_TYPE_SHORT:
Expand All @@ -3184,10 +3185,10 @@ GenTree* Compiler::impIntrinsic(CORINFO_CLASS_HANDLE clsHnd,
case CORINFO_TYPE_UINT:
case CORINFO_TYPE_LONG:
case CORINFO_TYPE_ULONG:
case CORINFO_TYPE_FLOAT:
case CORINFO_TYPE_DOUBLE:
case CORINFO_TYPE_NATIVEINT:
case CORINFO_TYPE_NATIVEUINT:
case CORINFO_TYPE_FLOAT:
case CORINFO_TYPE_DOUBLE:
{
return gtNewIconNode(true);
}
Expand Down Expand Up @@ -3217,6 +3218,7 @@ GenTree* Compiler::impIntrinsic(CORINFO_CLASS_HANDLE clsHnd,

switch (simdBaseJitType)
{
case CORINFO_TYPE_CHAR:
case CORINFO_TYPE_BYTE:
case CORINFO_TYPE_UBYTE:
case CORINFO_TYPE_SHORT:
Expand All @@ -3225,10 +3227,10 @@ GenTree* Compiler::impIntrinsic(CORINFO_CLASS_HANDLE clsHnd,
case CORINFO_TYPE_UINT:
case CORINFO_TYPE_LONG:
case CORINFO_TYPE_ULONG:
case CORINFO_TYPE_FLOAT:
case CORINFO_TYPE_DOUBLE:
case CORINFO_TYPE_NATIVEINT:
case CORINFO_TYPE_NATIVEUINT:
case CORINFO_TYPE_FLOAT:
case CORINFO_TYPE_DOUBLE:
{
var_types simdBaseType = JitType2PreciseVarType(simdBaseJitType);
unsigned elementSize = genTypeSize(simdBaseType);
Expand Down
1 change: 1 addition & 0 deletions src/coreclr/tools/Common/TypeSystem/Common/TypeDesc.cs
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Expand Up @@ -208,6 +208,7 @@ public bool IsPrimitiveNumeric
{
switch (GetTypeFlags(TypeFlags.CategoryMask))
{
case TypeFlags.Char:
case TypeFlags.SByte:
case TypeFlags.Byte:
case TypeFlags.Int16:
Expand Down
3 changes: 3 additions & 0 deletions src/coreclr/vm/jitinterface.cpp
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Expand Up @@ -4102,6 +4102,9 @@ CorInfoType CEEInfo::getTypeForPrimitiveNumericClass(
CorElementType ty = th.GetSignatureCorElementType();
switch (ty)
{
case ELEMENT_TYPE_CHAR:
result = CORINFO_TYPE_CHAR;
break;
case ELEMENT_TYPE_I1:
result = CORINFO_TYPE_BYTE;
break;
Expand Down
230 changes: 117 additions & 113 deletions src/libraries/System.Numerics.Vectors/ref/System.Numerics.Vectors.cs
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122 changes: 46 additions & 76 deletions src/libraries/System.Private.CoreLib/src/System/Numerics/Vector.cs
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Expand Up @@ -110,11 +110,7 @@ public static Vector<T> NegativeOne
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Vector<T> Abs<T>(Vector<T> value)
{
if ((typeof(T) == typeof(byte))
|| (typeof(T) == typeof(ushort))
|| (typeof(T) == typeof(uint))
|| (typeof(T) == typeof(ulong))
|| (typeof(T) == typeof(nuint)))
if (Scalar<T>.IsUnsigned)
{
return value;
}
Expand Down Expand Up @@ -239,6 +235,14 @@ public static Vector<TTo> As<TFrom, TTo>(this Vector<TFrom> vector)
[Intrinsic]
public static Vector<byte> AsVectorByte<T>(Vector<T> value) => value.As<T, byte>();

/// <summary>Reinterprets a <see cref="Vector{T}" /> as a new <see langword="Vector&lt;Char&gt;" />.</summary>
/// <typeparam name="T">The type of the input vector.</typeparam>
/// <param name="value">The vector to reinterpret.</param>
/// <returns><paramref name="value" /> reinterpreted as a new <see langword="Vector&lt;Char&gt;" />.</returns>
/// <exception cref="NotSupportedException">The type of <paramref name="value" /> (<typeparamref name="T" />) is not supported.</exception>
[Intrinsic]
public static Vector<char> AsVectorChar<T>(Vector<T> value) => value.As<T, char>();

/// <summary>Reinterprets a <see cref="Vector{T}" /> as a new <see langword="Vector&lt;Double&gt;" />.</summary>
/// <typeparam name="T">The type of the input vector.</typeparam>
/// <param name="value">The vector to reinterpret.</param>
Expand Down Expand Up @@ -355,20 +359,7 @@ public static Vector<TTo> As<TFrom, TTo>(this Vector<TFrom> vector)
[MethodImpl(MethodImplOptions.AggressiveInlining)]
internal static Vector<T> Ceiling<T>(Vector<T> vector)
{
if ((typeof(T) == typeof(byte))
|| (typeof(T) == typeof(short))
|| (typeof(T) == typeof(int))
|| (typeof(T) == typeof(long))
|| (typeof(T) == typeof(nint))
|| (typeof(T) == typeof(nuint))
|| (typeof(T) == typeof(sbyte))
|| (typeof(T) == typeof(ushort))
|| (typeof(T) == typeof(uint))
|| (typeof(T) == typeof(ulong)))
{
return vector;
}
else
if (Scalar<T>.IsFloatingPoint)
{
Unsafe.SkipInit(out Vector<T> result);

Expand All @@ -380,6 +371,10 @@ internal static Vector<T> Ceiling<T>(Vector<T> vector)

return result;
}
else
{
return vector;
}
}

/// <summary>Computes the ceiling of each element in a vector.</summary>
Expand Down Expand Up @@ -737,11 +732,7 @@ public static Vector<float> Cos(Vector<float> vector)
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Vector<T> CopySign<T>(Vector<T> value, Vector<T> sign)
{
if ((typeof(T) == typeof(byte))
|| (typeof(T) == typeof(ushort))
|| (typeof(T) == typeof(uint))
|| (typeof(T) == typeof(ulong))
|| (typeof(T) == typeof(nuint)))
if (Scalar<T>.IsUnsigned)
{
return value;
}
Expand Down Expand Up @@ -1072,20 +1063,7 @@ public static Vector<float> Exp(Vector<float> vector)
[MethodImpl(MethodImplOptions.AggressiveInlining)]
internal static Vector<T> Floor<T>(Vector<T> vector)
{
if ((typeof(T) == typeof(byte))
|| (typeof(T) == typeof(short))
|| (typeof(T) == typeof(int))
|| (typeof(T) == typeof(long))
|| (typeof(T) == typeof(nint))
|| (typeof(T) == typeof(nuint))
|| (typeof(T) == typeof(sbyte))
|| (typeof(T) == typeof(ushort))
|| (typeof(T) == typeof(uint))
|| (typeof(T) == typeof(ulong)))
{
return vector;
}
else
if (Scalar<T>.IsFloatingPoint)
{
Unsafe.SkipInit(out Vector<T> result);

Expand All @@ -1097,6 +1075,10 @@ internal static Vector<T> Floor<T>(Vector<T> vector)

return result;
}
else
{
return vector;
}
}

/// <summary>Computes the floor of each element in a vector.</summary>
Expand Down Expand Up @@ -1534,11 +1516,7 @@ public static Vector<T> IsNaN<T>(Vector<T> vector)
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Vector<T> IsNegative<T>(Vector<T> vector)
{
if ((typeof(T) == typeof(byte))
|| (typeof(T) == typeof(ushort))
|| (typeof(T) == typeof(uint))
|| (typeof(T) == typeof(ulong))
|| (typeof(T) == typeof(nuint)))
if (Scalar<T>.IsUnsigned)
{
return Vector<T>.Zero;
}
Expand Down Expand Up @@ -1609,11 +1587,7 @@ public static Vector<T> IsOddInteger<T>(Vector<T> vector)
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Vector<T> IsPositive<T>(Vector<T> vector)
{
if ((typeof(T) == typeof(byte))
|| (typeof(T) == typeof(ushort))
|| (typeof(T) == typeof(uint))
|| (typeof(T) == typeof(ulong))
|| (typeof(T) == typeof(nuint)))
if (Scalar<T>.IsUnsigned)
{
return Vector<T>.AllBitsSet;
}
Expand Down Expand Up @@ -2611,20 +2585,7 @@ public static Vector<float> RadiansToDegrees(Vector<float> radians)
[MethodImpl(MethodImplOptions.AggressiveInlining)]
internal static Vector<T> Round<T>(Vector<T> vector)
{
if ((typeof(T) == typeof(byte))
|| (typeof(T) == typeof(short))
|| (typeof(T) == typeof(int))
|| (typeof(T) == typeof(long))
|| (typeof(T) == typeof(nint))
|| (typeof(T) == typeof(nuint))
|| (typeof(T) == typeof(sbyte))
|| (typeof(T) == typeof(ushort))
|| (typeof(T) == typeof(uint))
|| (typeof(T) == typeof(ulong)))
{
return vector;
}
else
if (Scalar<T>.IsFloatingPoint)
{
Unsafe.SkipInit(out Vector<T> result);

Expand All @@ -2636,6 +2597,10 @@ internal static Vector<T> Round<T>(Vector<T> vector)

return result;
}
else
{
return vector;
}
}

/// <inheritdoc cref="Vector128.Round(Vector128{double})" />
Expand All @@ -2661,6 +2626,13 @@ internal static Vector<T> Round<T>(Vector<T> vector)
[Intrinsic]
public static Vector<byte> ShiftLeft(Vector<byte> value, int shiftCount) => value << shiftCount;

/// <summary>Shifts each element of a vector left by the specified amount.</summary>
/// <param name="value">The vector whose elements are to be shifted.</param>
/// <param name="shiftCount">The number of bits by which to shift each element.</param>
/// <returns>A vector whose elements where shifted left by <paramref name="shiftCount" />.</returns>
[Intrinsic]
public static Vector<char> ShiftLeft(Vector<char> value, int shiftCount) => value << shiftCount;

/// <summary>Shifts each element of a vector left by the specified amount.</summary>
/// <param name="value">The vector whose elements are to be shifted.</param>
/// <param name="shiftCount">The number of bits by which to shift each element.</param>
Expand Down Expand Up @@ -2808,6 +2780,13 @@ internal static Vector<ulong> ShiftLeft(Vector<ulong> vector, Vector<ulong> shif
[Intrinsic]
public static Vector<byte> ShiftRightLogical(Vector<byte> value, int shiftCount) => value >>> shiftCount;

/// <summary>Shifts (unsigned) each element of a vector right by the specified amount.</summary>
/// <param name="value">The vector whose elements are to be shifted.</param>
/// <param name="shiftCount">The number of bits by which to shift each element.</param>
/// <returns>A vector whose elements where shifted right by <paramref name="shiftCount" />.</returns>
[Intrinsic]
public static Vector<char> ShiftRightLogical(Vector<char> value, int shiftCount) => value >>> shiftCount;

/// <summary>Shifts (unsigned) each element of a vector right by the specified amount.</summary>
/// <param name="value">The vector whose elements are to be shifted.</param>
/// <param name="shiftCount">The number of bits by which to shift each element.</param>
Expand Down Expand Up @@ -3110,20 +3089,7 @@ public static T ToScalar<T>(this Vector<T> vector)
[MethodImpl(MethodImplOptions.AggressiveInlining)]
internal static Vector<T> Truncate<T>(Vector<T> vector)
{
if ((typeof(T) == typeof(byte))
|| (typeof(T) == typeof(short))
|| (typeof(T) == typeof(int))
|| (typeof(T) == typeof(long))
|| (typeof(T) == typeof(nint))
|| (typeof(T) == typeof(nuint))
|| (typeof(T) == typeof(sbyte))
|| (typeof(T) == typeof(ushort))
|| (typeof(T) == typeof(uint))
|| (typeof(T) == typeof(ulong)))
{
return vector;
}
else
if (Scalar<T>.IsFloatingPoint)
{
Unsafe.SkipInit(out Vector<T> result);

Expand All @@ -3135,6 +3101,10 @@ internal static Vector<T> Truncate<T>(Vector<T> vector)

return result;
}
else
{
return vector;
}
}

/// <inheritdoc cref="Vector128.Truncate(Vector128{double})" />
Expand Down
11 changes: 11 additions & 0 deletions src/libraries/System.Private.CoreLib/src/System/Numerics/VectorDebugView_1.cs
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Expand Up @@ -2,6 +2,7 @@
// The .NET Foundation licenses this file to you under the MIT license.

using System.Runtime.CompilerServices;
using System.Runtime.Intrinsics;

namespace System.Numerics
{
Expand All @@ -25,6 +26,16 @@ public byte[] ByteView
}
}

public char[] CharView
{
get
{
var items = new char[Vector<char>.Count];
Unsafe.WriteUnaligned(ref Unsafe.As<char, byte>(ref items[0]), _value);
return items;
}
}

public double[] DoubleView
{
get
Expand Down
20 changes: 8 additions & 12 deletions src/libraries/System.Private.CoreLib/src/System/Numerics/Vector_1.cs
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Expand Up @@ -170,18 +170,7 @@ public static bool IsSupported
{
[Intrinsic]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get => (typeof(T) == typeof(byte)) ||
(typeof(T) == typeof(double)) ||
(typeof(T) == typeof(short)) ||
(typeof(T) == typeof(int)) ||
(typeof(T) == typeof(long)) ||
(typeof(T) == typeof(nint)) ||
(typeof(T) == typeof(nuint)) ||
(typeof(T) == typeof(sbyte)) ||
(typeof(T) == typeof(float)) ||
(typeof(T) == typeof(ushort)) ||
(typeof(T) == typeof(uint)) ||
(typeof(T) == typeof(ulong));
get => Scalar<T>.IsSupported;
}

/// <summary>Gets a new <see cref="Vector{T}" /> with all elements initialized to one.</summary>
Expand Down Expand Up @@ -368,6 +357,13 @@ public T this[int index]
[Intrinsic]
public static explicit operator Vector<byte>(Vector<T> value) => value.As<T, byte>();

/// <summary>Reinterprets a <see cref="Vector{T}" /> as a new <see langword="Vector&lt;Char&gt;" />.</summary>
/// <param name="value">The vector to reinterpret.</param>
/// <returns><paramref name="value" /> reinterpreted as a new <see langword="Vector&lt;Char&gt;" />.</returns>
/// <exception cref="NotSupportedException">The type of <paramref name="value" /> (<typeparamref name="T" />) is not supported.</exception>
[Intrinsic]
public static explicit operator Vector<char>(Vector<T> value) => value.As<T, char>();

/// <summary>Reinterprets a <see cref="Vector{T}" /> as a new <see langword="Vector&lt;Double&gt;" />.</summary>
/// <param name="value">The vector to reinterpret.</param>
/// <returns><paramref name="value" /> reinterpreted as a new <see langword="Vector&lt;Double&gt;" />.</returns>
Expand Down
1 change: 0 additions & 1 deletion src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/ISimdVector_2.cs
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@@ -1,7 +1,6 @@
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System.Diagnostics.CodeAnalysis;
using System.Numerics;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
Expand Down
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