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CPU (A64): Add FP16/FP32 fast paths (F16C Intrinsics) for Fcvt_S, Fcvtl_V & Fcvtn_V Instructions. Now HardwareCapabilities uses CpuId. (#1650)

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* net5.0

* CPU (A64): Add FP16/FP32 fast paths (F16C Intrinsics) for Fcvt_S, Fcvtl_V & Fcvtn_V Instructions. Switch to .NET 5.0.

Nits.

Tests performed successfully in both debug and release mode (for all instructions involved).

* Address comment.

* Update appveyor.yml

* Revert "Update appveyor.yml"

This reverts commit 27cdd59e8b90e227e6924d9c162af26c00a89013.

* Remove Assembler CpuId.

* Update appveyor.yml

* Address comment.
This commit is contained in:
LDj3SNuD 2020-11-18 19:35:54 +01:00 • committed by GitHub
parent eafee34fee
commit 0679084f11
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9 changed files with 136 additions and 62 deletions
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62
ARMeilleure/CodeGen/X86/HardwareCapabilities.cs
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@ -1,20 +1,60 @@
using System;
using System.Runtime.Intrinsics.X86;
namespace ARMeilleure.CodeGen.X86
{
static class HardwareCapabilities
{
public static bool SupportsSse => Sse.IsSupported;
public static bool SupportsSse2 => Sse2.IsSupported;
public static bool SupportsSse3 => Sse3.IsSupported;
public static bool SupportsSsse3 => Ssse3.IsSupported;
public static bool SupportsSse41 => Sse41.IsSupported;
public static bool SupportsSse42 => Sse42.IsSupported;
public static bool SupportsPclmulqdq => Pclmulqdq.IsSupported;
public static bool SupportsFma => Fma.IsSupported;
public static bool SupportsPopcnt => Popcnt.IsSupported;
public static bool SupportsAesni => Aes.IsSupported;
public static bool SupportsAvx => Avx.IsSupported;
static HardwareCapabilities()
{
if (!X86Base.IsSupported)
{
return;
}
(_, _, int ecx, int edx) = X86Base.CpuId(0x00000001, 0x00000000);
FeatureInfoEdx = (FeatureFlagsEdx)edx;
FeatureInfoEcx = (FeatureFlagsEcx)ecx;
}
[Flags]
public enum FeatureFlagsEdx
{
Sse = 1 << 25,
Sse2 = 1 << 26
}
[Flags]
public enum FeatureFlagsEcx
{
Sse3 = 1 << 0,
Pclmulqdq = 1 << 1,
Ssse3 = 1 << 9,
Fma = 1 << 12,
Sse41 = 1 << 19,
Sse42 = 1 << 20,
Popcnt = 1 << 23,
Aes = 1 << 25,
Avx = 1 << 28,
F16c = 1 << 29
}
public static FeatureFlagsEdx FeatureInfoEdx { get; }
public static FeatureFlagsEcx FeatureInfoEcx { get; }
public static bool SupportsSse => FeatureInfoEdx.HasFlag(FeatureFlagsEdx.Sse);
public static bool SupportsSse2 => FeatureInfoEdx.HasFlag(FeatureFlagsEdx.Sse2);
public static bool SupportsSse3 => FeatureInfoEcx.HasFlag(FeatureFlagsEcx.Sse3);
public static bool SupportsPclmulqdq => FeatureInfoEcx.HasFlag(FeatureFlagsEcx.Pclmulqdq);
public static bool SupportsSsse3 => FeatureInfoEcx.HasFlag(FeatureFlagsEcx.Ssse3);
public static bool SupportsFma => FeatureInfoEcx.HasFlag(FeatureFlagsEcx.Fma);
public static bool SupportsSse41 => FeatureInfoEcx.HasFlag(FeatureFlagsEcx.Sse41);
public static bool SupportsSse42 => FeatureInfoEcx.HasFlag(FeatureFlagsEcx.Sse42);
public static bool SupportsPopcnt => FeatureInfoEcx.HasFlag(FeatureFlagsEcx.Popcnt);
public static bool SupportsAesni => FeatureInfoEcx.HasFlag(FeatureFlagsEcx.Aes);
public static bool SupportsAvx => FeatureInfoEcx.HasFlag(FeatureFlagsEcx.Avx);
public static bool SupportsF16c => FeatureInfoEcx.HasFlag(FeatureFlagsEcx.F16c);
public static bool ForceLegacySse { get; set; }