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Interlocked intrinsic improvements #93821

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merged 2 commits into from
Oct 27, 2023
Merged

Interlocked intrinsic improvements #93821

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d3a7a2f
Interlocked intrinsic improvements
MichalPetryka Oct 21, 2023
4b35a3c
Format
MichalPetryka Oct 21, 2023
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6 changes: 4 additions & 2 deletions src/coreclr/System.Private.CoreLib/src/System/Threading/Interlocked.CoreCLR.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -79,8 +79,9 @@ public static partial class Interlocked
/// <returns>The original value of <paramref name="location1"/>.</returns>
/// <exception cref="NullReferenceException">The address of location1 is a null pointer.</exception>
/// <typeparam name="T">The type to be used for <paramref name="location1"/> and <paramref name="value"/>. This type must be a reference type.</typeparam>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Intrinsic]
[return: NotNullIfNotNull(nameof(location1))]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T Exchange<T>([NotNullIfNotNull(nameof(value))] ref T location1, T value) where T : class? =>
Unsafe.As<T>(Exchange(ref Unsafe.As<T, object?>(ref location1), value));
#endregion
Expand Down Expand Up @@ -134,8 +135,9 @@ public static partial class Interlocked
/// <returns>The original value in <paramref name="location1"/>.</returns>
/// <exception cref="NullReferenceException">The address of <paramref name="location1"/> is a null pointer.</exception>
/// <typeparam name="T">The type to be used for <paramref name="location1"/>, <paramref name="value"/>, and <paramref name="comparand"/>. This type must be a reference type.</typeparam>
[return: NotNullIfNotNull(nameof(location1))]
[Intrinsic]
[return: NotNullIfNotNull(nameof(location1))]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T CompareExchange<T>(ref T location1, T value, T comparand) where T : class? =>
Unsafe.As<T>(CompareExchange(ref Unsafe.As<T, object?>(ref location1), value, comparand));
#endregion
Expand Down
20 changes: 12 additions & 8 deletions src/coreclr/jit/importercalls.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3253,16 +3253,18 @@ GenTree* Compiler::impIntrinsic(GenTree* newobjThis,
case NI_System_Threading_Interlocked_CompareExchange:
{
var_types retType = JITtype2varType(sig->retType);
if ((retType == TYP_LONG) && (TARGET_POINTER_SIZE == 4))
if (genTypeSize(retType) > TARGET_POINTER_SIZE)
{
break;
}
if ((retType == TYP_REF) && impStackTop(1).val->IsIntegralConst(0))

if ((retType == TYP_REF) &&
(impStackTop(1).val->IsIntegralConst(0) || impStackTop(1).val->IsIconHandle(GTF_ICON_OBJ_HDL)))
{
// Intrinsify "object" overload in case of null assignment
// since we don't need the write barrier.
}
else if ((retType != TYP_INT) && (retType != TYP_LONG))
else if (!varTypeIsIntegral(retType))
{
break;
}
Expand All @@ -3273,7 +3275,7 @@ GenTree* Compiler::impIntrinsic(GenTree* newobjThis,
GenTree* op3 = impPopStack().val; // comparand
GenTree* op2 = impPopStack().val; // value
GenTree* op1 = impPopStack().val; // location
retNode = gtNewAtomicNode(GT_CMPXCHG, genActualType(callType), op1, op2, op3);
retNode = gtNewAtomicNode(GT_CMPXCHG, callType, op1, op2, op3);
break;
}

Expand All @@ -3284,17 +3286,19 @@ GenTree* Compiler::impIntrinsic(GenTree* newobjThis,
assert(sig->numArgs == 2);

var_types retType = JITtype2varType(sig->retType);
if ((retType == TYP_LONG) && (TARGET_POINTER_SIZE == 4))
if (genTypeSize(retType) > TARGET_POINTER_SIZE)
{
break;
}
if ((retType == TYP_REF) && impStackTop().val->IsIntegralConst(0))

if ((retType == TYP_REF) &&
(impStackTop().val->IsIntegralConst(0) || impStackTop().val->IsIconHandle(GTF_ICON_OBJ_HDL)))
{
// Intrinsify "object" overload in case of null assignment
// since we don't need the write barrier.
assert(ni == NI_System_Threading_Interlocked_Exchange);
}
else if ((retType != TYP_INT) && (retType != TYP_LONG))
else if (!varTypeIsIntegral(retType))
{
break;
}
Expand All @@ -3308,7 +3312,7 @@ GenTree* Compiler::impIntrinsic(GenTree* newobjThis,
// field_addr (for example)
//
retNode = gtNewAtomicNode(ni == NI_System_Threading_Interlocked_ExchangeAdd ? GT_XADD : GT_XCHG,
genActualType(callType), op1, op2);
callType, op1, op2);
break;
}
#endif // defined(TARGET_XARCH) || defined(TARGET_ARM64) || defined(TARGET_RISCV64)
Expand Down
4 changes: 2 additions & 2 deletions src/coreclr/nativeaot/System.Private.CoreLib/src/System/Threading/Interlocked.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -24,8 +24,8 @@ public static long CompareExchange(ref long location1, long value, long comparan
}

[Intrinsic]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[return: NotNullIfNotNull(nameof(location1))]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T CompareExchange<T>(ref T location1, T value, T comparand) where T : class?
{
return Unsafe.As<T>(RuntimeImports.InterlockedCompareExchange(ref Unsafe.As<T, object?>(ref location1), value, comparand));
Expand Down Expand Up @@ -69,8 +69,8 @@ public static long Exchange(ref long location1, long value)
}

[Intrinsic]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[return: NotNullIfNotNull(nameof(location1))]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T Exchange<T>([NotNullIfNotNull(nameof(value))] ref T location1, T value) where T : class?
{
return Unsafe.As<T>(RuntimeImports.InterlockedExchange(ref Unsafe.As<T, object?>(ref location1), value));
Expand Down
8 changes: 8 additions & 0 deletions src/libraries/System.Private.CoreLib/src/System/Threading/Interlocked.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,7 @@ public static partial class Interlocked
/// <param name="value">The value to which the <paramref name="location1"/> parameter is set.</param>
/// <returns>The original value of <paramref name="location1"/>.</returns>
/// <exception cref="NullReferenceException">The address of location1 is a null pointer.</exception>
[Intrinsic]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[CLSCompliant(false)]
public static uint Exchange(ref uint location1, uint value) =>
Expand All @@ -64,6 +65,7 @@ public static partial class Interlocked
/// <param name="value">The value to which the <paramref name="location1"/> parameter is set.</param>
/// <returns>The original value of <paramref name="location1"/>.</returns>
/// <exception cref="NullReferenceException">The address of location1 is a null pointer.</exception>
[Intrinsic]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[CLSCompliant(false)]
public static ulong Exchange(ref ulong location1, ulong value) =>
Expand Down Expand Up @@ -92,6 +94,7 @@ public static double Exchange(ref double location1, double value)
/// <param name="value">The value to which the <paramref name="location1"/> parameter is set.</param>
/// <returns>The original value of <paramref name="location1"/>.</returns>
/// <exception cref="NullReferenceException">The address of location1 is a null pointer.</exception>
[Intrinsic]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static IntPtr Exchange(ref IntPtr location1, IntPtr value)
{
Expand All @@ -109,6 +112,7 @@ public static IntPtr Exchange(ref IntPtr location1, IntPtr value)
/// <param name="value">The value to which the <paramref name="location1"/> parameter is set.</param>
/// <returns>The original value of <paramref name="location1"/>.</returns>
/// <exception cref="NullReferenceException">The address of location1 is a null pointer.</exception>
[Intrinsic]
[CLSCompliant(false)]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static UIntPtr Exchange(ref UIntPtr location1, UIntPtr value)
Expand All @@ -128,6 +132,7 @@ public static UIntPtr Exchange(ref UIntPtr location1, UIntPtr value)
/// <param name="comparand">The value that is compared to the value at <paramref name="location1"/>.</param>
/// <returns>The original value in <paramref name="location1"/>.</returns>
/// <exception cref="NullReferenceException">The address of <paramref name="location1"/> is a null pointer.</exception>
[Intrinsic]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[CLSCompliant(false)]
public static uint CompareExchange(ref uint location1, uint value, uint comparand) =>
Expand All @@ -139,6 +144,7 @@ public static UIntPtr Exchange(ref UIntPtr location1, UIntPtr value)
/// <param name="comparand">The value that is compared to the value at <paramref name="location1"/>.</param>
/// <returns>The original value in <paramref name="location1"/>.</returns>
/// <exception cref="NullReferenceException">The address of <paramref name="location1"/> is a null pointer.</exception>
[Intrinsic]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[CLSCompliant(false)]
public static ulong CompareExchange(ref ulong location1, ulong value, ulong comparand) =>
Expand Down Expand Up @@ -170,6 +176,7 @@ public static double CompareExchange(ref double location1, double value, double
/// <param name="comparand">The <see cref="IntPtr"/> that is compared to the value at <paramref name="location1"/>.</param>
/// <returns>The original value in <paramref name="location1"/>.</returns>
/// <exception cref="NullReferenceException">The address of <paramref name="location1"/> is a null pointer.</exception>
[Intrinsic]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static IntPtr CompareExchange(ref IntPtr location1, IntPtr value, IntPtr comparand)
{
Expand All @@ -188,6 +195,7 @@ public static IntPtr CompareExchange(ref IntPtr location1, IntPtr value, IntPtr
/// <param name="comparand">The <see cref="UIntPtr"/> that is compared to the value at <paramref name="location1"/>.</param>
/// <returns>The original value in <paramref name="location1"/>.</returns>
/// <exception cref="NullReferenceException">The address of <paramref name="location1"/> is a null pointer.</exception>
[Intrinsic]
[CLSCompliant(false)]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static UIntPtr CompareExchange(ref UIntPtr location1, UIntPtr value, UIntPtr comparand)
Expand Down
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