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ARMeilleure: Add gfni acceleration (#3669)

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* 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`
This commit is contained in:
Wunk 2022-10-02 02:17:19 -07:00 committed by GitHub
parent 96bf7f8522
commit 45ce540b9b
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GPG Key ID: 4AEE18F83AFDEB23
10 changed files with 589 additions and 409 deletions
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1
ARMeilleure/CodeGen/X86/AssemblerTable.cs
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@ -113,6 +113,7 @@ namespace ARMeilleure.CodeGen.X86
Add(X86Instruction.Divps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5e, InstructionFlags.Vex));
Add(X86Instruction.Divsd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5e, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Divss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5e, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Gf2p8affineqb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3ace, InstructionFlags.Prefix66));
Add(X86Instruction.Haddpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f7c, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Haddps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f7c, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Idiv, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x070000f7, InstructionFlags.None));

11
ARMeilleure/CodeGen/X86/HardwareCapabilities.cs
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@ -20,8 +20,9 @@ namespace ARMeilleure.CodeGen.X86
if (maxNum >= 7)
{
(_, int ebx7, _, _) = X86Base.CpuId(0x00000007, 0x00000000);
(_, int ebx7, int ecx7, _) = X86Base.CpuId(0x00000007, 0x00000000);
FeatureInfo7Ebx = (FeatureFlags7Ebx)ebx7;
FeatureInfo7Ecx = (FeatureFlags7Ecx)ecx7;
}
}
@ -54,9 +55,16 @@ namespace ARMeilleure.CodeGen.X86
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);
@ -72,6 +80,7 @@ namespace ARMeilleure.CodeGen.X86
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; }

1
ARMeilleure/CodeGen/X86/IntrinsicTable.cs
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@ -58,6 +58,7 @@ namespace ARMeilleure.CodeGen.X86
Add(Intrinsic.X86Divps, new IntrinsicInfo(X86Instruction.Divps, IntrinsicType.Binary));
Add(Intrinsic.X86Divsd, new IntrinsicInfo(X86Instruction.Divsd, IntrinsicType.Binary));
Add(Intrinsic.X86Divss, new IntrinsicInfo(X86Instruction.Divss, IntrinsicType.Binary));
Add(Intrinsic.X86Gf2p8affineqb, new IntrinsicInfo(X86Instruction.Gf2p8affineqb, IntrinsicType.TernaryImm));
Add(Intrinsic.X86Haddpd, new IntrinsicInfo(X86Instruction.Haddpd, IntrinsicType.Binary));
Add(Intrinsic.X86Haddps, new IntrinsicInfo(X86Instruction.Haddps, IntrinsicType.Binary));
Add(Intrinsic.X86Insertps, new IntrinsicInfo(X86Instruction.Insertps, IntrinsicType.TernaryImm));

1
ARMeilleure/CodeGen/X86/X86Instruction.cs
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@ -54,6 +54,7 @@ namespace ARMeilleure.CodeGen.X86
Divps,
Divsd,
Divss,
Gf2p8affineqb,
Haddpd,
Haddps,
Idiv,

15
ARMeilleure/Instructions/InstEmitSimdHelper.cs
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@ -243,6 +243,21 @@ namespace ARMeilleure.Instructions
throw new ArgumentException($"Invalid rounding mode \"{roundMode}\".");
}
public static ulong X86GetGf2p8LogicalShiftLeft(int shift)
{
ulong identity =
(0b00000001UL << 56) |
(0b00000010UL << 48) |
(0b00000100UL << 40) |
(0b00001000UL << 32) |
(0b00010000UL << 24) |
(0b00100000UL << 16) |
(0b01000000UL << 8) |
(0b10000000UL << 0);
return shift >= 0 ? identity >> (shift * 8) : identity << (-shift * 8);
}
public static Operand EmitCountSetBits8(ArmEmitterContext context, Operand op) // "size" is 8 (SIMD&FP Inst.).
{
Debug.Assert(op.Type == OperandType.I32 || op.Type == OperandType.I64);

27
ARMeilleure/Instructions/InstEmitSimdLogical.cs
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@ -336,8 +336,32 @@ namespace ARMeilleure.Instructions
{
OpCodeSimd op = (OpCodeSimd)context.CurrOp;
Operand res = context.VectorZero();
if (Optimizations.UseGfni)
{
const long bitMatrix =
(0b10000000L << 56) |
(0b01000000L << 48) |
(0b00100000L << 40) |
(0b00010000L << 32) |
(0b00001000L << 24) |
(0b00000100L << 16) |
(0b00000010L << 8) |
(0b00000001L << 0);
Operand vBitMatrix = X86GetAllElements(context, bitMatrix);
Operand res = context.AddIntrinsic(Intrinsic.X86Gf2p8affineqb, GetVec(op.Rn), vBitMatrix, Const(0));
if (op.RegisterSize == RegisterSize.Simd64)
{
res = context.VectorZeroUpper64(res);
}
context.Copy(GetVec(op.Rd), res);
}
else
{
Operand res = context.VectorZero();
int elems = op.RegisterSize == RegisterSize.Simd128 ? 16 : 8;
for (int index = 0; index < elems; index++)
@ -351,6 +375,7 @@ namespace ARMeilleure.Instructions
context.Copy(GetVec(op.Rd), res);
}
}
private static Operand EmitReverseBits8Op(ArmEmitterContext context, Operand op)
{

134
ARMeilleure/Instructions/InstEmitSimdShift.cs
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@ -88,8 +88,35 @@ namespace ARMeilleure.Instructions
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
int shift = GetImmShl(op);
int eSize = 8 << op.Size;
if (Optimizations.UseSse2 && op.Size > 0)
if (shift >= eSize)
{
if ((op.RegisterSize == RegisterSize.Simd64))
{
Operand res = context.VectorZeroUpper64(GetVec(op.Rd));
context.Copy(GetVec(op.Rd), res);
}
}
else if (Optimizations.UseGfni && op.Size == 0)
{
Operand n = GetVec(op.Rn);
ulong bitMatrix = X86GetGf2p8LogicalShiftLeft(shift);
Operand vBitMatrix = X86GetElements(context, bitMatrix, bitMatrix);
Operand res = context.AddIntrinsic(Intrinsic.X86Gf2p8affineqb, n, vBitMatrix, Const(0));
if (op.RegisterSize == RegisterSize.Simd64)
{
res = context.VectorZeroUpper64(res);
}
context.Copy(GetVec(op.Rd), res);
}
else if (Optimizations.UseSse2 && op.Size > 0)
{
Operand n = GetVec(op.Rn);
@ -396,10 +423,40 @@ namespace ARMeilleure.Instructions
{
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
if (Optimizations.UseSse2 && op.Size > 0 && op.Size < 3)
{
int shift = GetImmShr(op);
if (Optimizations.UseGfni && op.Size == 0)
{
Operand n = GetVec(op.Rn);
ulong bitMatrix;
if (shift < 8)
{
bitMatrix = X86GetGf2p8LogicalShiftLeft(-shift);
// Extend sign-bit
bitMatrix |= 0x8080808080808080UL >> (64 - shift * 8);
}
else
{
// Replicate sign-bit into all bits
bitMatrix = 0x8080808080808080UL;
}
Operand vBitMatrix = X86GetElements(context, bitMatrix, bitMatrix);
Operand res = context.AddIntrinsic(Intrinsic.X86Gf2p8affineqb, n, vBitMatrix, Const(0));
if (op.RegisterSize == RegisterSize.Simd64)
{
res = context.VectorZeroUpper64(res);
}
context.Copy(GetVec(op.Rd), res);
}
else if (Optimizations.UseSse2 && op.Size > 0 && op.Size < 3)
{
Operand n = GetVec(op.Rn);
Intrinsic sraInst = X86PsraInstruction[op.Size];
@ -929,10 +986,44 @@ namespace ARMeilleure.Instructions
OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
int shift = GetImmShl(op);
int eSize = 8 << op.Size;
ulong mask = shift != 0 ? ulong.MaxValue >> (64 - shift) : 0UL;
if (Optimizations.UseSse2 && op.Size > 0)
if (shift >= eSize)
{
if ((op.RegisterSize == RegisterSize.Simd64) || scalar)
{
Operand res = context.VectorZeroUpper64(GetVec(op.Rd));
context.Copy(GetVec(op.Rd), res);
}
}
else if (Optimizations.UseGfni && op.Size == 0)
{
Operand d = GetVec(op.Rd);
Operand n = GetVec(op.Rn);
ulong bitMatrix = X86GetGf2p8LogicalShiftLeft(shift);
Operand vBitMatrix = X86GetElements(context, bitMatrix, bitMatrix);
Operand nShifted = context.AddIntrinsic(Intrinsic.X86Gf2p8affineqb, n, vBitMatrix, Const(0));
Operand dMask = X86GetAllElements(context, (long)mask * _masks_SliSri[op.Size]);
Operand dMasked = context.AddIntrinsic(Intrinsic.X86Pand, d, dMask);
Operand res = context.AddIntrinsic(Intrinsic.X86Por, nShifted, dMasked);
if ((op.RegisterSize == RegisterSize.Simd64) || scalar)
{
res = context.VectorZeroUpper64(res);
}
context.Copy(d, res);
}
else if (Optimizations.UseSse2 && op.Size > 0)
{
Operand d = GetVec(op.Rd);
Operand n = GetVec(op.Rn);
@ -988,7 +1079,40 @@ namespace ARMeilleure.Instructions
ulong mask = (ulong.MaxValue << (eSize - shift)) & (ulong.MaxValue >> (64 - eSize));
if (Optimizations.UseSse2 && op.Size > 0)
if (shift >= eSize)
{
if ((op.RegisterSize == RegisterSize.Simd64) || scalar)
{
Operand res = context.VectorZeroUpper64(GetVec(op.Rd));
context.Copy(GetVec(op.Rd), res);
}
}
else if (Optimizations.UseGfni && op.Size == 0)
{
Operand d = GetVec(op.Rd);
Operand n = GetVec(op.Rn);
ulong bitMatrix = X86GetGf2p8LogicalShiftLeft(-shift);
Operand vBitMatrix = X86GetElements(context, bitMatrix, bitMatrix);
Operand nShifted = context.AddIntrinsic(Intrinsic.X86Gf2p8affineqb, n, vBitMatrix, Const(0));
Operand dMask = X86GetAllElements(context, (long)mask * _masks_SliSri[op.Size]);
Operand dMasked = context.AddIntrinsic(Intrinsic.X86Pand, d, dMask);
Operand res = context.AddIntrinsic(Intrinsic.X86Por, nShifted, dMasked);
if ((op.RegisterSize == RegisterSize.Simd64) || scalar)
{
res = context.VectorZeroUpper64(res);
}
context.Copy(d, res);
}
else if (Optimizations.UseSse2 && op.Size > 0)
{
Operand d = GetVec(op.Rd);
Operand n = GetVec(op.Rn);

1
ARMeilleure/IntermediateRepresentation/Intrinsic.cs
View File

@ -47,6 +47,7 @@ namespace ARMeilleure.IntermediateRepresentation
X86Divps,
X86Divsd,
X86Divss,
X86Gf2p8affineqb,
X86Haddpd,
X86Haddps,
X86Insertps,

2
ARMeilleure/Optimizations.cs
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@ -22,6 +22,7 @@ namespace ARMeilleure
public static bool UseAesniIfAvailable { get; set; } = true;
public static bool UsePclmulqdqIfAvailable { get; set; } = true;
public static bool UseShaIfAvailable { get; set; } = true;
public static bool UseGfniIfAvailable { get; set; } = true;
public static bool ForceLegacySse
{
@ -42,5 +43,6 @@ namespace ARMeilleure
internal static bool UseAesni => UseAesniIfAvailable && HardwareCapabilities.SupportsAesni;
internal static bool UsePclmulqdq => UsePclmulqdqIfAvailable && HardwareCapabilities.SupportsPclmulqdq;
internal static bool UseSha => UseShaIfAvailable && HardwareCapabilities.SupportsSha;
internal static bool UseGfni => UseGfniIfAvailable && HardwareCapabilities.SupportsGfni;
}
}

11
ARMeilleure/Translation/PTC/Ptc.cs
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@ -27,7 +27,7 @@ namespace ARMeilleure.Translation.PTC
private const string OuterHeaderMagicString = "PTCohd\0\0";
private const string InnerHeaderMagicString = "PTCihd\0\0";
private const uint InternalVersion = 3703; //! To be incremented manually for each change to the ARMeilleure project.
private const uint InternalVersion = 3710; //! To be incremented manually for each change to the ARMeilleure project.
private const string ActualDir = "0";
private const string BackupDir = "1";
@ -951,7 +951,8 @@ namespace ARMeilleure.Translation.PTC
return new FeatureInfo(
(uint)HardwareCapabilities.FeatureInfo1Ecx,
(uint)HardwareCapabilities.FeatureInfo1Edx,
(uint)HardwareCapabilities.FeatureInfo7Ebx);
(uint)HardwareCapabilities.FeatureInfo7Ebx,
(uint)HardwareCapabilities.FeatureInfo7Ecx);
}
private static byte GetMemoryManagerMode()
@ -971,7 +972,7 @@ namespace ARMeilleure.Translation.PTC
return osPlatform;
}
[StructLayout(LayoutKind.Sequential, Pack = 1/*, Size = 54*/)]
[StructLayout(LayoutKind.Sequential, Pack = 1/*, Size = 58*/)]
private struct OuterHeader
{
public ulong Magic;
@ -1002,8 +1003,8 @@ namespace ARMeilleure.Translation.PTC
}
}
[StructLayout(LayoutKind.Sequential, Pack = 1/*, Size = 12*/)]
private record struct FeatureInfo(uint FeatureInfo0, uint FeatureInfo1, uint FeatureInfo2);
[StructLayout(LayoutKind.Sequential, Pack = 1/*, Size = 16*/)]
private record struct FeatureInfo(uint FeatureInfo0, uint FeatureInfo1, uint FeatureInfo2, uint FeatureInfo3);
[StructLayout(LayoutKind.Sequential, Pack = 1/*, Size = 128*/)]
private struct InnerHeader