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CPU (A64): Add Pmull_V Inst. with Clmul fast path for the "1/2D -> 1Q" variant & Sse fast path and slow path for both the "8/16B -> 8H" and "1/2D -> 1Q" variants; with Test. (#1817)

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* Add Pmull_V Sse fast path only, both "8/16B -> 8H" and "1/2D -> 1Q" variants; with Test.

* Add Clmul fast path for the 128 bits variant.

* Small optimisation (save 60 instructions) for the Sse fast path about the 128 bits variant.

* Add slow path, both variants. Fix V128 Shl/Shr when shift = 0.

* A32: Add Vmull_I P64 variant (slow path); not tested.

* A32: Add Vmull_I_P8_P64 Test and fix P64 variant.
This commit is contained in:
LDj3SNuD 2021-01-04 23:45:54 +01:00 committed by GitHub
parent a03ab0c4a0
commit 430ba6da65
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GPG Key ID: 4AEE18F83AFDEB23
11 changed files with 264 additions and 25 deletions
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4
ARMeilleure/Decoders/OpCodeTable.cs
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@ -413,6 +413,8 @@ namespace ARMeilleure.Decoders
SetA64("0x001110101xxxxx000111xxxxxxxxxx", InstName.Orr_V, InstEmit.Orr_V, OpCodeSimdReg.Create);
SetA64("0x00111100000xxx0xx101xxxxxxxxxx", InstName.Orr_Vi, InstEmit.Orr_Vi, OpCodeSimdImm.Create);
SetA64("0x00111100000xxx10x101xxxxxxxxxx", InstName.Orr_Vi, InstEmit.Orr_Vi, OpCodeSimdImm.Create);
SetA64("0x001110001xxxxx111000xxxxxxxxxx", InstName.Pmull_V, InstEmit.Pmull_V, OpCodeSimdReg.Create);
SetA64("0x001110111xxxxx111000xxxxxxxxxx", InstName.Pmull_V, InstEmit.Pmull_V, OpCodeSimdReg.Create);
SetA64("0x101110<<1xxxxx010000xxxxxxxxxx", InstName.Raddhn_V, InstEmit.Raddhn_V, OpCodeSimdReg.Create);
SetA64("0x10111001100000010110xxxxxxxxxx", InstName.Rbit_V, InstEmit.Rbit_V, OpCodeSimd.Create);
SetA64("0x00111000100000000110xxxxxxxxxx", InstName.Rev16_V, InstEmit.Rev16_V, OpCodeSimd.Create);
@ -886,7 +888,7 @@ namespace ARMeilleure.Decoders
SetA32("111100110x00xxxxxxxx1101xxx1xxxx", InstName.Vmul, InstEmit32.Vmul_V, OpCode32SimdReg.Create);
SetA32("1111001x1x<<xxxxxxx01010x1x0xxxx", InstName.Vmull, InstEmit32.Vmull_1, OpCode32SimdRegElemLong.Create);
SetA32("1111001x1x<<xxxxxxx01100x0x0xxxx", InstName.Vmull, InstEmit32.Vmull_I, OpCode32SimdRegLong.Create);
SetA32("111100101x00xxxxxxx01110x0x0xxxx", InstName.Vmull, InstEmit32.Vmull_I, OpCode32SimdRegLong.Create); // Polynomial
SetA32("111100101xx0xxxxxxx01110x0x0xxxx", InstName.Vmull, InstEmit32.Vmull_I, OpCode32SimdRegLong.Create); // P8/P64
SetA32("111100111x110000xxxx01011xx0xxxx", InstName.Vmvn, InstEmit32.Vmvn_I, OpCode32SimdBinary.Create);
SetA32("1111001x1x000xxxxxxx0xx00x11xxxx", InstName.Vmvn, InstEmit32.Vmvn_II, OpCode32SimdImm.Create); // D/Q vector I32.
SetA32("1111001x1x000xxxxxxx10x00x11xxxx", InstName.Vmvn, InstEmit32.Vmvn_II, OpCode32SimdImm.Create);

125
ARMeilleure/Instructions/InstEmitSimdArithmetic.cs
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@ -10,6 +10,7 @@ using System.Diagnostics;
using static ARMeilleure.Instructions.InstEmitHelper;
using static ARMeilleure.Instructions.InstEmitSimdHelper;
using static ARMeilleure.Instructions.InstEmitSimdHelper32;
using static ARMeilleure.IntermediateRepresentation.OperandHelper;
namespace ARMeilleure.Instructions
@ -1928,6 +1929,112 @@ namespace ARMeilleure.Instructions
}
}
public static void Pmull_V(ArmEmitterContext context)
{
OpCodeSimdReg op = (OpCodeSimdReg)context.CurrOp;
if (Optimizations.UsePclmulqdq && op.Size == 3)
{
Operand n = GetVec(op.Rn);
Operand m = GetVec(op.Rm);
int imm8 = op.RegisterSize == RegisterSize.Simd64 ? 0b0000_0000 : 0b0001_0001;
Operand res = context.AddIntrinsic(Intrinsic.X86Pclmulqdq, n, m, Const(imm8));
context.Copy(GetVec(op.Rd), res);
}
else if (Optimizations.UseSse41)
{
Operand n = GetVec(op.Rn);
Operand m = GetVec(op.Rm);
if (op.RegisterSize == RegisterSize.Simd64)
{
n = context.VectorZeroUpper64(n);
m = context.VectorZeroUpper64(m);
}
else /* if (op.RegisterSize == RegisterSize.Simd128) */
{
n = context.AddIntrinsic(Intrinsic.X86Psrldq, n, Const(8));
m = context.AddIntrinsic(Intrinsic.X86Psrldq, m, Const(8));
}
Operand res = context.VectorZero();
if (op.Size == 0)
{
n = context.AddIntrinsic(Intrinsic.X86Pmovzxbw, n);
m = context.AddIntrinsic(Intrinsic.X86Pmovzxbw, m);
for (int i = 0; i < 8; i++)
{
Operand mask = context.AddIntrinsic(Intrinsic.X86Psllw, n, Const(15 - i));
mask = context.AddIntrinsic(Intrinsic.X86Psraw, mask, Const(15));
Operand tmp = context.AddIntrinsic(Intrinsic.X86Psllw, m, Const(i));
tmp = context.AddIntrinsic(Intrinsic.X86Pand, tmp, mask);
res = context.AddIntrinsic(Intrinsic.X86Pxor, res, tmp);
}
}
else /* if (op.Size == 3) */
{
Operand zero = context.VectorZero();
for (int i = 0; i < 64; i++)
{
Operand mask = context.AddIntrinsic(Intrinsic.X86Movlhps, n, n);
mask = context.AddIntrinsic(Intrinsic.X86Psllq, mask, Const(63 - i));
mask = context.AddIntrinsic(Intrinsic.X86Psrlq, mask, Const(63));
mask = context.AddIntrinsic(Intrinsic.X86Psubq, zero, mask);
Operand tmp = EmitSse2Sll_128(context, m, i);
tmp = context.AddIntrinsic(Intrinsic.X86Pand, tmp, mask);
res = context.AddIntrinsic(Intrinsic.X86Pxor, res, tmp);
}
}
context.Copy(GetVec(op.Rd), res);
}
else
{
Operand n = GetVec(op.Rn);
Operand m = GetVec(op.Rm);
Operand res;
if (op.Size == 0)
{
res = context.VectorZero();
int part = op.RegisterSize == RegisterSize.Simd64 ? 0 : 8;
for (int index = 0; index < 8; index++)
{
Operand ne = context.VectorExtract8(n, part + index);
Operand me = context.VectorExtract8(m, part + index);
Operand de = EmitPolynomialMultiply(context, ne, me, 8);
res = EmitVectorInsert(context, res, de, index, 1);
}
}
else /* if (op.Size == 3) */
{
int part = op.RegisterSize == RegisterSize.Simd64 ? 0 : 1;
Operand ne = context.VectorExtract(OperandType.I64, n, part);
Operand me = context.VectorExtract(OperandType.I64, m, part);
res = context.Call(typeof(SoftFallback).GetMethod(nameof(SoftFallback.PolynomialMult64_128)), ne, me);
}
context.Copy(GetVec(op.Rd), res);
}
}
public static void Raddhn_V(ArmEmitterContext context)
{
EmitHighNarrow(context, (op1, op2) => context.Add(op1, op2), round: true);
@ -3690,5 +3797,23 @@ namespace ARMeilleure.Instructions
context.Copy(GetVec(op.Rd), res);
}
private static Operand EmitSse2Sll_128(ArmEmitterContext context, Operand op, int shift)
{
// The upper part of op is assumed to be zero.
Debug.Assert(shift >= 0 && shift < 64);
if (shift == 0)
{
return op;
}
Operand high = context.AddIntrinsic(Intrinsic.X86Pslldq, op, Const(8));
high = context.AddIntrinsic(Intrinsic.X86Psrlq, high, Const(64 - shift));
Operand low = context.AddIntrinsic(Intrinsic.X86Psllq, op, Const(shift));
return context.AddIntrinsic(Intrinsic.X86Por, high, low);
}
}
}

34
ARMeilleure/Instructions/InstEmitSimdArithmetic32.cs
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@ -919,9 +919,21 @@ namespace ARMeilleure.Instructions
OpCode32SimdRegLong op = (OpCode32SimdRegLong)context.CurrOp;
if (op.Polynomial)
{
if (op.Size == 0) // P8
{
EmitVectorBinaryLongOpI32(context, (op1, op2) => EmitPolynomialMultiply(context, op1, op2, 8 << op.Size), false);
}
else /* if (op.Size == 2) // P64 */
{
Operand ne = context.VectorExtract(OperandType.I64, GetVec(op.Qn), op.Vn & 1);
Operand me = context.VectorExtract(OperandType.I64, GetVec(op.Qm), op.Vm & 1);
Operand res = context.Call(typeof(SoftFallback).GetMethod(nameof(SoftFallback.PolynomialMult64_128)), ne, me);
context.Copy(GetVecA32(op.Qd), res);
}
}
else
{
EmitVectorBinaryLongOpI32(context, (op1, op2) => context.Multiply(op1, op2), !op.U);
@ -1366,27 +1378,5 @@ namespace ARMeilleure.Instructions
EmitVectorBinaryOpSimd32(context, genericEmit);
}
}
private static Operand EmitPolynomialMultiply(ArmEmitterContext context, Operand op1, Operand op2, int eSize)
{
Debug.Assert(eSize <= 32);
Operand result = eSize == 32 ? Const(0L) : Const(0);
if (eSize == 32)
{
op1 = context.ZeroExtend32(OperandType.I64, op1);
op2 = context.ZeroExtend32(OperandType.I64, op2);
}
for (int i = 0; i < eSize; i++)
{
Operand mask = context.BitwiseAnd(op1, Const(op1.Type, 1L << i));
result = context.BitwiseExclusiveOr(result, context.Multiply(op2, mask));
}
return result;
}
}
}

22
ARMeilleure/Instructions/InstEmitSimdHelper32.cs
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@ -1167,5 +1167,27 @@ namespace ARMeilleure.Instructions
return res;
}
public static Operand EmitPolynomialMultiply(ArmEmitterContext context, Operand op1, Operand op2, int eSize)
{
Debug.Assert(eSize <= 32);
Operand result = eSize == 32 ? Const(0L) : Const(0);
if (eSize == 32)
{
op1 = context.ZeroExtend32(OperandType.I64, op1);
op2 = context.ZeroExtend32(OperandType.I64, op2);
}
for (int i = 0; i < eSize; i++)
{
Operand mask = context.BitwiseAnd(op1, Const(op1.Type, 1L << i));
result = context.BitwiseExclusiveOr(result, context.Multiply(op2, mask));
}
return result;
}
}
}

1
ARMeilleure/Instructions/InstName.cs
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@ -296,6 +296,7 @@ namespace ARMeilleure.Instructions
Orn_V,
Orr_V,
Orr_Vi,
Pmull_V,
Raddhn_V,
Rbit_V,
Rev16_V,

17
ARMeilleure/Instructions/SoftFallback.cs
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@ -1260,5 +1260,22 @@ namespace ARMeilleure.Instructions
: (uint)(value >> 32);
}
#endregion
public static V128 PolynomialMult64_128(ulong op1, ulong op2)
{
V128 result = V128.Zero;
V128 op2_128 = new V128(op2, 0);
for (int i = 0; i < 64; i++)
{
if (((op1 >> i) & 1) == 1)
{
result ^= op2_128 << i;
}
}
return result;
}
}
}

10
ARMeilleure/State/V128.cs
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@ -189,6 +189,11 @@ namespace ARMeilleure.State
/// </remarks>
public static V128 operator <<(V128 x, int shift)
{
if (shift == 0)
{
return new V128(x._e0, x._e1);
}
ulong shiftOut = x._e0 >> (64 - shift);
return new V128(x._e0 << shift, (x._e1 << shift) | shiftOut);
@ -205,6 +210,11 @@ namespace ARMeilleure.State
/// </remarks>
public static V128 operator >>(V128 x, int shift)
{
if (shift == 0)
{
return new V128(x._e0, x._e1);
}
ulong shiftOut = x._e1 & ((1UL << shift) - 1);
return new V128((x._e0 >> shift) | (shiftOut << (64 - shift)), x._e1 >> shift);

1
ARMeilleure/Translation/Delegates.cs
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@ -171,6 +171,7 @@ namespace ARMeilleure.Translation
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.HashUpper)));
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.InverseMixColumns)));
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.MixColumns)));
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.PolynomialMult64_128)));
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.Round)));
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.RoundF)));
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.SatF32ToS32)));

2
ARMeilleure/Translation/PTC/Ptc.cs
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@ -22,7 +22,7 @@ namespace ARMeilleure.Translation.PTC
{
private const string HeaderMagic = "PTChd";
private const int InternalVersion = 1814; //! To be incremented manually for each change to the ARMeilleure project.
private const int InternalVersion = 1817; //! To be incremented manually for each change to the ARMeilleure project.
private const string ActualDir = "0";
private const string BackupDir = "1";

34
Ryujinx.Tests/Cpu/CpuTestSimdReg.cs
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@ -60,6 +60,13 @@ namespace Ryujinx.Tests.Cpu
0x8080808080808080ul, 0xFFFFFFFFFFFFFFFFul };
}
private static ulong[] _8B1D_()
{
return new ulong[] { 0x0000000000000000ul, 0x7F7F7F7F7F7F7F7Ful,
0x8080808080808080ul, 0x7FFFFFFFFFFFFFFFul,
0x8000000000000000ul, 0xFFFFFFFFFFFFFFFFul };
}
private static ulong[] _8B4H2S_()
{
return new ulong[] { 0x0000000000000000ul, 0x7F7F7F7F7F7F7F7Ful,
@ -1977,6 +1984,33 @@ namespace Ryujinx.Tests.Cpu
CompareAgainstUnicorn();
}
[Test, Pairwise, Description("PMULL{2} <Vd>.<Ta>, <Vn>.<Tb>, <Vm>.<Tb>")]
public void Pmull_V([Values(0u)] uint rd,
[Values(1u, 0u)] uint rn,
[Values(2u, 0u)] uint rm,
[ValueSource(nameof(_8B1D_))] [Random(RndCnt)] ulong z0,
[ValueSource(nameof(_8B1D_))] [Random(RndCnt)] ulong z1,
[ValueSource(nameof(_8B1D_))] [Random(RndCnt)] ulong a0,
[ValueSource(nameof(_8B1D_))] [Random(RndCnt)] ulong a1,
[ValueSource(nameof(_8B1D_))] [Random(RndCnt)] ulong b0,
[ValueSource(nameof(_8B1D_))] [Random(RndCnt)] ulong b1,
[Values(0b00u, 0b11u)] uint size, // Q0: <8B, 1D> => <8H, 1Q>
[Values(0b0u, 0b1u)] uint q) // Q1: <16B, 2D> => <8H, 1Q>
{
uint opcode = 0x0E20E000; // PMULL V0.8H, V0.8B, V0.8B
opcode |= ((rm & 31) << 16) | ((rn & 31) << 5) | ((rd & 31) << 0);
opcode |= ((size & 3) << 22);
opcode |= ((q & 1) << 30);
V128 v0 = MakeVectorE0E1(z0, z1);
V128 v1 = MakeVectorE0E1(a0, a1);
V128 v2 = MakeVectorE0E1(b0, b1);
SingleOpcode(opcode, v0: v0, v1: v1, v2: v2);
CompareAgainstUnicorn();
}
[Test, Pairwise, Description("RADDHN{2} <Vd>.<Tb>, <Vn>.<Ta>, <Vm>.<Ta>")]
public void Raddhn_V_8H8B_4S4H_2D2S([Values(0u)] uint rd,
[Values(1u, 0u)] uint rn,

37
Ryujinx.Tests/Cpu/CpuTestSimdReg32.cs
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@ -100,6 +100,13 @@ namespace Ryujinx.Tests.Cpu
#endregion
#region "ValueSource (Types)"
private static ulong[] _8B1D_()
{
return new ulong[] { 0x0000000000000000ul, 0x7F7F7F7F7F7F7F7Ful,
0x8080808080808080ul, 0x7FFFFFFFFFFFFFFFul,
0x8000000000000000ul, 0xFFFFFFFFFFFFFFFFul };
}
private static ulong[] _8B4H2S1D_()
{
return new ulong[] { 0x0000000000000000ul, 0x7F7F7F7F7F7F7F7Ful,
@ -530,6 +537,36 @@ namespace Ryujinx.Tests.Cpu
CompareAgainstUnicorn();
}
[Test, Pairwise, Description("VMULL.<P8, P64> <Qd>, <Dn>, <Dm>")]
public void Vmull_I_P8_P64([Values(0u, 1u)] uint rd,
[Values(0u, 1u)] uint rn,
[Values(0u, 1u)] uint rm,
[ValueSource(nameof(_8B1D_))] [Random(RndCnt)] ulong d0,
[ValueSource(nameof(_8B1D_))] [Random(RndCnt)] ulong d1,
[Values(0u/*, 2u*/)] uint size) // <P8, P64>
{
/*if (size == 2u)
{
Assert.Ignore("Ryujinx.Tests.Unicorn.UnicornException : Invalid instruction (UC_ERR_INSN_INVALID)");
}*/
uint opcode = 0xf2800e00u; // VMULL.P8 Q0, D0, D0
rd >>= 1; rd <<= 1;
opcode |= (((rd & 0x10) << 18) | (rd & 0xf) << 12);
opcode |= (((rn & 0x10) << 3) | (rn & 0xf) << 16);
opcode |= (((rm & 0x10) << 1) | (rm & 0xf) << 0);
opcode |= (size & 0x3) << 20;
V128 v0 = MakeVectorE0E1(d0, d1);
SingleOpcode(opcode, v0: v0);
CompareAgainstUnicorn();
}
[Test, Pairwise, Description("VSHL.<size> {<Vd>}, <Vm>, <Vn>")]
public void Vshl([Values(0u)] uint rd,
[Values(1u, 0u)] uint rn,