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Add FMAXP and FMINP (Vector) instructions on the CPU (#412)

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* Add FMAXP and FMINP (Vector) instructions on the CPU

* Address PR feedback
This commit is contained in:
gdkchan 2018-09-22 17:26:18 -03:00 committed by GitHub
parent a76660eac5
commit 54ed9096bd
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 183 additions and 158 deletions
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2
ChocolArm64/AOpCodeTable.cs
View file

@ -278,10 +278,12 @@ namespace ChocolArm64
SetA64("0>0011100<1xxxxx111101xxxxxxxxxx", AInstEmit.Fmax_V, typeof(AOpCodeSimdReg));
SetA64("000111100x1xxxxx011010xxxxxxxxxx", AInstEmit.Fmaxnm_S, typeof(AOpCodeSimdReg));
SetA64("0>0011100<1xxxxx110001xxxxxxxxxx", AInstEmit.Fmaxnm_V, typeof(AOpCodeSimdReg));
SetA64("0>1011100<1xxxxx111101xxxxxxxxxx", AInstEmit.Fmaxp_V, typeof(AOpCodeSimdReg));
SetA64("000111100x1xxxxx010110xxxxxxxxxx", AInstEmit.Fmin_S, typeof(AOpCodeSimdReg));
SetA64("0>0011101<1xxxxx111101xxxxxxxxxx", AInstEmit.Fmin_V, typeof(AOpCodeSimdReg));
SetA64("000111100x1xxxxx011110xxxxxxxxxx", AInstEmit.Fminnm_S, typeof(AOpCodeSimdReg));
SetA64("0>0011101<1xxxxx110001xxxxxxxxxx", AInstEmit.Fminnm_V, typeof(AOpCodeSimdReg));
SetA64("0>1011101<1xxxxx111101xxxxxxxxxx", AInstEmit.Fminp_V, typeof(AOpCodeSimdReg));
SetA64("010111111<<xxxxx0001x0xxxxxxxxxx", AInstEmit.Fmla_Se, typeof(AOpCodeSimdRegElemF));
SetA64("0>0011100<1xxxxx110011xxxxxxxxxx", AInstEmit.Fmla_V, typeof(AOpCodeSimdReg));
SetA64("0x0011111<<xxxxx0001x0xxxxxxxxxx", AInstEmit.Fmla_Ve, typeof(AOpCodeSimdRegElemF));

303
ChocolArm64/Instruction/AInstEmitSimdArithmetic.cs
View file

@ -145,136 +145,6 @@ namespace ChocolArm64.Instruction
}
}
private static void EmitAbs(AILEmitterCtx Context)
{
AILLabel LblTrue = new AILLabel();
Context.Emit(OpCodes.Dup);
Context.Emit(OpCodes.Ldc_I4_0);
Context.Emit(OpCodes.Bge_S, LblTrue);
Context.Emit(OpCodes.Neg);
Context.MarkLabel(LblTrue);
}
private static void EmitAddLongPairwise(AILEmitterCtx Context, bool Signed, bool Accumulate)
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
int Words = Op.GetBitsCount() >> 4;
int Pairs = Words >> Op.Size;
for (int Index = 0; Index < Pairs; Index++)
{
int Idx = Index << 1;
EmitVectorExtract(Context, Op.Rn, Idx, Op.Size, Signed);
EmitVectorExtract(Context, Op.Rn, Idx + 1, Op.Size, Signed);
Context.Emit(OpCodes.Add);
if (Accumulate)
{
EmitVectorExtract(Context, Op.Rd, Index, Op.Size + 1, Signed);
Context.Emit(OpCodes.Add);
}
EmitVectorInsertTmp(Context, Index, Op.Size + 1);
}
Context.EmitLdvectmp();
Context.EmitStvec(Op.Rd);
if (Op.RegisterSize == ARegisterSize.SIMD64)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
private static void EmitDoublingMultiplyHighHalf(AILEmitterCtx Context, bool Round)
{
AOpCodeSimdReg Op = (AOpCodeSimdReg)Context.CurrOp;
int ESize = 8 << Op.Size;
Context.Emit(OpCodes.Mul);
if (!Round)
{
Context.EmitAsr(ESize - 1);
}
else
{
long RoundConst = 1L << (ESize - 1);
AILLabel LblTrue = new AILLabel();
Context.EmitLsl(1);
Context.EmitLdc_I8(RoundConst);
Context.Emit(OpCodes.Add);
Context.EmitAsr(ESize);
Context.Emit(OpCodes.Dup);
Context.EmitLdc_I8((long)int.MinValue);
Context.Emit(OpCodes.Bne_Un_S, LblTrue);
Context.Emit(OpCodes.Neg);
Context.MarkLabel(LblTrue);
}
}
private static void EmitHighNarrow(AILEmitterCtx Context, Action Emit, bool Round)
{
AOpCodeSimdReg Op = (AOpCodeSimdReg)Context.CurrOp;
int Elems = 8 >> Op.Size;
int ESize = 8 << Op.Size;
int Part = Op.RegisterSize == ARegisterSize.SIMD128 ? Elems : 0;
long RoundConst = 1L << (ESize - 1);
if (Part != 0)
{
Context.EmitLdvec(Op.Rd);
Context.EmitStvectmp();
}
for (int Index = 0; Index < Elems; Index++)
{
EmitVectorExtractZx(Context, Op.Rn, Index, Op.Size + 1);
EmitVectorExtractZx(Context, Op.Rm, Index, Op.Size + 1);
Emit();
if (Round)
{
Context.EmitLdc_I8(RoundConst);
Context.Emit(OpCodes.Add);
}
Context.EmitLsr(ESize);
EmitVectorInsertTmp(Context, Part + Index, Op.Size);
}
Context.EmitLdvectmp();
Context.EmitStvec(Op.Rd);
if (Part == 0)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
public static void Fabd_S(AILEmitterCtx Context)
{
EmitScalarBinaryOpF(Context, () =>
@ -341,34 +211,7 @@ namespace ChocolArm64.Instruction
public static void Faddp_V(AILEmitterCtx Context)
{
AOpCodeSimdReg Op = (AOpCodeSimdReg)Context.CurrOp;
int SizeF = Op.Size & 1;
int Bytes = Op.GetBitsCount() >> 3;
int Elems = Bytes >> SizeF + 2;
int Half = Elems >> 1;
for (int Index = 0; Index < Elems; Index++)
{
int Elem = (Index & (Half - 1)) << 1;
EmitVectorExtractF(Context, Index < Half ? Op.Rn : Op.Rm, Elem + 0, SizeF);
EmitVectorExtractF(Context, Index < Half ? Op.Rn : Op.Rm, Elem + 1, SizeF);
Context.Emit(OpCodes.Add);
EmitVectorInsertTmpF(Context, Index, SizeF);
}
Context.EmitLdvectmp();
Context.EmitStvec(Op.Rd);
if (Op.RegisterSize == ARegisterSize.SIMD64)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
EmitVectorPairwiseOpF(Context, () => Context.Emit(OpCodes.Add));
}
public static void Fdiv_S(AILEmitterCtx Context)
@ -436,6 +279,11 @@ namespace ChocolArm64.Instruction
});
}
public static void Fmaxp_V(AILEmitterCtx Context)
{
EmitVectorPairwiseOpF(Context, () => EmitBinarySoftFloatCall(Context, nameof(ASoftFloat.Max)));
}
public static void Fmin_S(AILEmitterCtx Context)
{
EmitScalarBinaryOpF(Context, () =>
@ -468,6 +316,11 @@ namespace ChocolArm64.Instruction
});
}
public static void Fminp_V(AILEmitterCtx Context)
{
EmitVectorPairwiseOpF(Context, () => EmitBinarySoftFloatCall(Context, nameof(ASoftFloat.Min)));
}
public static void Fmla_Se(AILEmitterCtx Context)
{
EmitScalarTernaryOpByElemF(Context, () =>
@ -1278,6 +1131,7 @@ namespace ChocolArm64.Instruction
EmitVectorTernaryOpZx(Context, () =>
{
Context.Emit(OpCodes.Sub);
EmitAbs(Context);
Context.Emit(OpCodes.Add);
@ -1289,6 +1143,7 @@ namespace ChocolArm64.Instruction
EmitVectorWidenRnRmTernaryOpZx(Context, () =>
{
Context.Emit(OpCodes.Sub);
EmitAbs(Context);
Context.Emit(OpCodes.Add);
@ -1300,6 +1155,7 @@ namespace ChocolArm64.Instruction
EmitVectorBinaryOpZx(Context, () =>
{
Context.Emit(OpCodes.Sub);
EmitAbs(Context);
});
}
@ -1309,6 +1165,7 @@ namespace ChocolArm64.Instruction
EmitVectorWidenRnRmBinaryOpZx(Context, () =>
{
Context.Emit(OpCodes.Sub);
EmitAbs(Context);
});
}
@ -1496,5 +1353,135 @@ namespace ChocolArm64.Instruction
{
EmitVectorWidenRmBinaryOpZx(Context, () => Context.Emit(OpCodes.Sub));
}
private static void EmitAbs(AILEmitterCtx Context)
{
AILLabel LblTrue = new AILLabel();
Context.Emit(OpCodes.Dup);
Context.Emit(OpCodes.Ldc_I4_0);
Context.Emit(OpCodes.Bge_S, LblTrue);
Context.Emit(OpCodes.Neg);
Context.MarkLabel(LblTrue);
}
private static void EmitAddLongPairwise(AILEmitterCtx Context, bool Signed, bool Accumulate)
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
int Words = Op.GetBitsCount() >> 4;
int Pairs = Words >> Op.Size;
for (int Index = 0; Index < Pairs; Index++)
{
int Idx = Index << 1;
EmitVectorExtract(Context, Op.Rn, Idx, Op.Size, Signed);
EmitVectorExtract(Context, Op.Rn, Idx + 1, Op.Size, Signed);
Context.Emit(OpCodes.Add);
if (Accumulate)
{
EmitVectorExtract(Context, Op.Rd, Index, Op.Size + 1, Signed);
Context.Emit(OpCodes.Add);
}
EmitVectorInsertTmp(Context, Index, Op.Size + 1);
}
Context.EmitLdvectmp();
Context.EmitStvec(Op.Rd);
if (Op.RegisterSize == ARegisterSize.SIMD64)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
private static void EmitDoublingMultiplyHighHalf(AILEmitterCtx Context, bool Round)
{
AOpCodeSimdReg Op = (AOpCodeSimdReg)Context.CurrOp;
int ESize = 8 << Op.Size;
Context.Emit(OpCodes.Mul);
if (!Round)
{
Context.EmitAsr(ESize - 1);
}
else
{
long RoundConst = 1L << (ESize - 1);
AILLabel LblTrue = new AILLabel();
Context.EmitLsl(1);
Context.EmitLdc_I8(RoundConst);
Context.Emit(OpCodes.Add);
Context.EmitAsr(ESize);
Context.Emit(OpCodes.Dup);
Context.EmitLdc_I8((long)int.MinValue);
Context.Emit(OpCodes.Bne_Un_S, LblTrue);
Context.Emit(OpCodes.Neg);
Context.MarkLabel(LblTrue);
}
}
private static void EmitHighNarrow(AILEmitterCtx Context, Action Emit, bool Round)
{
AOpCodeSimdReg Op = (AOpCodeSimdReg)Context.CurrOp;
int Elems = 8 >> Op.Size;
int ESize = 8 << Op.Size;
int Part = Op.RegisterSize == ARegisterSize.SIMD128 ? Elems : 0;
long RoundConst = 1L << (ESize - 1);
if (Part != 0)
{
Context.EmitLdvec(Op.Rd);
Context.EmitStvectmp();
}
for (int Index = 0; Index < Elems; Index++)
{
EmitVectorExtractZx(Context, Op.Rn, Index, Op.Size + 1);
EmitVectorExtractZx(Context, Op.Rm, Index, Op.Size + 1);
Emit();
if (Round)
{
Context.EmitLdc_I8(RoundConst);
Context.Emit(OpCodes.Add);
}
Context.EmitLsr(ESize);
EmitVectorInsertTmp(Context, Part + Index, Op.Size);
}
Context.EmitLdvectmp();
Context.EmitStvec(Op.Rd);
if (Part == 0)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
}
}

36
ChocolArm64/Instruction/AInstEmitSimdHelper.cs
View file

@ -813,6 +813,42 @@ namespace ChocolArm64.Instruction
}
}
public static void EmitVectorPairwiseOpF(AILEmitterCtx Context, Action Emit)
{
AOpCodeSimdReg Op = (AOpCodeSimdReg)Context.CurrOp;
int SizeF = Op.Size & 1;
int Words = Op.GetBitsCount() >> 4;
int Pairs = Words >> SizeF + 2;
for (int Index = 0; Index < Pairs; Index++)
{
int Idx = Index << 1;
EmitVectorExtractF(Context, Op.Rn, Idx, SizeF);
EmitVectorExtractF(Context, Op.Rn, Idx + 1, SizeF);
Emit();
EmitVectorExtractF(Context, Op.Rm, Idx, SizeF);
EmitVectorExtractF(Context, Op.Rm, Idx + 1, SizeF);
Emit();
EmitVectorInsertTmpF(Context, Pairs + Index, SizeF);
EmitVectorInsertTmpF(Context, Index, SizeF);
}
Context.EmitLdvectmp();
Context.EmitStvec(Op.Rd);
if (Op.RegisterSize == ARegisterSize.SIMD64)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
[Flags]
public enum SaturatingFlags
{