Ryujinx/ARMeilleure/CodeGen/X86/HardwareCapabilities.cs
Wunk 45ce540b9b
ARMeilleure: Add gfni acceleration (#3669)
* ARMeilleure: Add `GFNI` detection

This is intended for utilizing the `gf2p8affineqb` instruction

* ARMeilleure: Add `gf2p8affineqb`

Not using the VEX or EVEX-form of this instruction is intentional. There
are `GFNI`-chips that do not support AVX(so no VEX encoding) such as
Tremont(Lakefield) chips as well as Jasper Lake.

13df339fe7/GenuineIntel/GenuineIntel00806A1_Lakefield_LC_InstLatX64.txt (L1297-L1299)

13df339fe7/GenuineIntel/GenuineIntel00906C0_JasperLake_InstLatX64.txt (L1252-L1254)

* ARMeilleure: Add `gfni` acceleration of `Rbit_V`

Passes all `Rbit_V*` unit tests on my `i9-11900k`

* ARMeilleure: Add `gfni` acceleration of `S{l,r}i_V`

Also added a fast-path for when the shift amount is greater than the
size of the element.

* ARMeilleure: Add `gfni` acceleration of `Shl_V` and `Sshr_V`

* ARMeilleure: Increment InternalVersion

* ARMeilleure: Fix Intrinsic and Assembler Table alignment

`gf2p8affineqb` is the longest instruction name I know of. It shouldn't
get any wider than this.

* ARMeilleure: Remove SSE2+SHA requirement for GFNI

* ARMeilleure Add `X86GetGf2p8LogicalShiftLeft`

Used to generate GF(2^8) 8x8 bit-matrices for bit-shifting for the `gf2p8affineqb` instruction.

* ARMeilleure: Append `FeatureInfo7Ecx` to `FeatureInfo`
2022-10-02 11:17:19 +02:00

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3.2 KiB
C#

using System;
using System.Runtime.Intrinsics.X86;
namespace ARMeilleure.CodeGen.X86
{
static class HardwareCapabilities
{
static HardwareCapabilities()
{
if (!X86Base.IsSupported)
{
return;
}
(int maxNum, _, _, _) = X86Base.CpuId(0x00000000, 0x00000000);
(_, _, int ecx1, int edx1) = X86Base.CpuId(0x00000001, 0x00000000);
FeatureInfo1Edx = (FeatureFlags1Edx)edx1;
FeatureInfo1Ecx = (FeatureFlags1Ecx)ecx1;
if (maxNum >= 7)
{
(_, int ebx7, int ecx7, _) = X86Base.CpuId(0x00000007, 0x00000000);
FeatureInfo7Ebx = (FeatureFlags7Ebx)ebx7;
FeatureInfo7Ecx = (FeatureFlags7Ecx)ecx7;
}
}
[Flags]
public enum FeatureFlags1Edx
{
Sse = 1 << 25,
Sse2 = 1 << 26
}
[Flags]
public enum FeatureFlags1Ecx
{
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
}
[Flags]
public enum FeatureFlags7Ebx
{
Avx2 = 1 << 5,
Sha = 1 << 29
}
[Flags]
public enum FeatureFlags7Ecx
{
Gfni = 1 << 8,
}
public static FeatureFlags1Edx FeatureInfo1Edx { get; }
public static FeatureFlags1Ecx FeatureInfo1Ecx { get; }
public static FeatureFlags7Ebx FeatureInfo7Ebx { get; } = 0;
public static FeatureFlags7Ecx FeatureInfo7Ecx { get; } = 0;
public static bool SupportsSse => FeatureInfo1Edx.HasFlag(FeatureFlags1Edx.Sse);
public static bool SupportsSse2 => FeatureInfo1Edx.HasFlag(FeatureFlags1Edx.Sse2);
public static bool SupportsSse3 => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Sse3);
public static bool SupportsPclmulqdq => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Pclmulqdq);
public static bool SupportsSsse3 => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Ssse3);
public static bool SupportsFma => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Fma);
public static bool SupportsSse41 => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Sse41);
public static bool SupportsSse42 => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Sse42);
public static bool SupportsPopcnt => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Popcnt);
public static bool SupportsAesni => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Aes);
public static bool SupportsAvx => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.Avx);
public static bool SupportsAvx2 => FeatureInfo7Ebx.HasFlag(FeatureFlags7Ebx.Avx2) && SupportsAvx;
public static bool SupportsF16c => FeatureInfo1Ecx.HasFlag(FeatureFlags1Ecx.F16c);
public static bool SupportsSha => FeatureInfo7Ebx.HasFlag(FeatureFlags7Ebx.Sha);
public static bool SupportsGfni => FeatureInfo7Ecx.HasFlag(FeatureFlags7Ecx.Gfni);
public static bool ForceLegacySse { get; set; }
public static bool SupportsVexEncoding => SupportsAvx && !ForceLegacySse;
}
}