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Update AInstEmitSimdShift.cs

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LDj3SNuD 2018-09-09 14:14:07 +02:00 • committed by GitHub
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commit c3f7b914fc
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1 changed files with 188 additions and 55 deletions
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243
ChocolArm64/Instruction/AInstEmitSimdShift.cs
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@ -10,6 +10,11 @@ namespace ChocolArm64.Instruction
{
static partial class AInstEmit
{
public static void Rshrn_V(AILEmitterCtx Context)
{
EmitVectorShrImmNarrowOpZx(Context, Round: true);
}
public static void Shl_S(AILEmitterCtx Context)
{
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp;
@ -45,9 +50,7 @@ namespace ChocolArm64.Instruction
public static void Shrn_V(AILEmitterCtx Context)
{
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp;
EmitVectorShImmNarrowBinaryZx(Context, () => Context.Emit(OpCodes.Shr_Un), GetImmShr(Op));
EmitVectorShrImmNarrowOpZx(Context, Round: false);
}
public static void Sli_V(AILEmitterCtx Context)
@ -85,26 +88,44 @@ namespace ChocolArm64.Instruction
}
}
public static void Sqrshrn_S(AILEmitterCtx Context)
{
EmitRoundShrImmSaturatingNarrowOp(Context, ShrImmSaturatingNarrowFlags.ScalarSxSx);
}
public static void Sqrshrn_V(AILEmitterCtx Context)
{
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp;
EmitRoundShrImmSaturatingNarrowOp(Context, ShrImmSaturatingNarrowFlags.VectorSxSx);
}
int Shift = GetImmShr(Op);
public static void Sqrshrun_S(AILEmitterCtx Context)
{
EmitRoundShrImmSaturatingNarrowOp(Context, ShrImmSaturatingNarrowFlags.ScalarSxZx);
}
long RoundConst = 1L << (Shift - 1);
public static void Sqrshrun_V(AILEmitterCtx Context)
{
EmitRoundShrImmSaturatingNarrowOp(Context, ShrImmSaturatingNarrowFlags.VectorSxZx);
}
Action Emit = () =>
{
Context.EmitLdc_I8(RoundConst);
public static void Sqshrn_S(AILEmitterCtx Context)
{
EmitShrImmSaturatingNarrowOp(Context, ShrImmSaturatingNarrowFlags.ScalarSxSx);
}
Context.Emit(OpCodes.Add);
public static void Sqshrn_V(AILEmitterCtx Context)
{
EmitShrImmSaturatingNarrowOp(Context, ShrImmSaturatingNarrowFlags.VectorSxSx);
}
Context.EmitLdc_I4(Shift);
public static void Sqshrun_S(AILEmitterCtx Context)
{
EmitShrImmSaturatingNarrowOp(Context, ShrImmSaturatingNarrowFlags.ScalarSxZx);
}
Context.Emit(OpCodes.Shr);
};
EmitVectorSaturatingNarrowOpSxSx(Context, Emit);
public static void Sqshrun_V(AILEmitterCtx Context)
{
EmitShrImmSaturatingNarrowOp(Context, ShrImmSaturatingNarrowFlags.VectorSxZx);
}
public static void Srshr_S(AILEmitterCtx Context)
@ -159,6 +180,26 @@ namespace ChocolArm64.Instruction
EmitVectorShrImmOpSx(Context, ShrImmFlags.Accumulate);
}
public static void Uqrshrn_S(AILEmitterCtx Context)
{
EmitRoundShrImmSaturatingNarrowOp(Context, ShrImmSaturatingNarrowFlags.ScalarZxZx);
}
public static void Uqrshrn_V(AILEmitterCtx Context)
{
EmitRoundShrImmSaturatingNarrowOp(Context, ShrImmSaturatingNarrowFlags.VectorZxZx);
}
public static void Uqshrn_S(AILEmitterCtx Context)
{
EmitShrImmSaturatingNarrowOp(Context, ShrImmSaturatingNarrowFlags.ScalarZxZx);
}
public static void Uqshrn_V(AILEmitterCtx Context)
{
EmitShrImmSaturatingNarrowOp(Context, ShrImmSaturatingNarrowFlags.VectorZxZx);
}
public static void Urshr_S(AILEmitterCtx Context)
{
EmitScalarShrImmOpZx(Context, ShrImmFlags.Round);
@ -367,6 +408,138 @@ namespace ChocolArm64.Instruction
}
}
private static void EmitVectorShrImmNarrowOpZx(AILEmitterCtx Context, bool Round)
{
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp;
int Shift = GetImmShr(Op);
long RoundConst = 1L << (Shift - 1);
int Elems = 8 >> Op.Size;
int Part = Op.RegisterSize == ARegisterSize.SIMD128 ? Elems : 0;
if (Part != 0)
{
Context.EmitLdvec(Op.Rd);
Context.EmitStvectmp();
}
for (int Index = 0; Index < Elems; Index++)
{
EmitVectorExtractZx(Context, Op.Rn, Index, Op.Size + 1);
if (Round)
{
Context.EmitLdc_I8(RoundConst);
Context.Emit(OpCodes.Add);
}
Context.EmitLdc_I4(Shift);
Context.Emit(OpCodes.Shr_Un);
EmitVectorInsertTmp(Context, Part + Index, Op.Size);
}
Context.EmitLdvectmp();
Context.EmitStvec(Op.Rd);
if (Part == 0)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
[Flags]
private enum ShrImmSaturatingNarrowFlags
{
Scalar = 1 << 0,
SignedSrc = 1 << 1,
SignedDst = 1 << 2,
Round = 1 << 3,
ScalarSxSx = Scalar | SignedSrc | SignedDst,
ScalarSxZx = Scalar | SignedSrc,
ScalarZxZx = Scalar,
VectorSxSx = SignedSrc | SignedDst,
VectorSxZx = SignedSrc,
VectorZxZx = 0
}
private static void EmitRoundShrImmSaturatingNarrowOp(AILEmitterCtx Context, ShrImmSaturatingNarrowFlags Flags)
{
EmitShrImmSaturatingNarrowOp(Context, ShrImmSaturatingNarrowFlags.Round | Flags);
}
private static void EmitShrImmSaturatingNarrowOp(AILEmitterCtx Context, ShrImmSaturatingNarrowFlags Flags)
{
AOpCodeSimdShImm Op = (AOpCodeSimdShImm)Context.CurrOp;
bool Scalar = (Flags & ShrImmSaturatingNarrowFlags.Scalar) != 0;
bool SignedSrc = (Flags & ShrImmSaturatingNarrowFlags.SignedSrc) != 0;
bool SignedDst = (Flags & ShrImmSaturatingNarrowFlags.SignedDst) != 0;
bool Round = (Flags & ShrImmSaturatingNarrowFlags.Round) != 0;
int Shift = GetImmShr(Op);
long RoundConst = 1L << (Shift - 1);
int Elems = !Scalar ? 8 >> Op.Size : 1;
int Part = !Scalar && (Op.RegisterSize == ARegisterSize.SIMD128) ? Elems : 0;
if (Scalar)
{
EmitVectorZeroLowerTmp(Context);
}
if (Part != 0)
{
Context.EmitLdvec(Op.Rd);
Context.EmitStvectmp();
}
for (int Index = 0; Index < Elems; Index++)
{
EmitVectorExtract(Context, Op.Rn, Index, Op.Size + 1, SignedSrc);
if (Op.Size <= 1 || !Round)
{
if (Round)
{
Context.EmitLdc_I8(RoundConst);
Context.Emit(OpCodes.Add);
}
Context.EmitLdc_I4(Shift);
Context.Emit(SignedSrc ? OpCodes.Shr : OpCodes.Shr_Un);
}
else /* if (Op.Size == 2 && Round) */
{
EmitShrImm_64(Context, SignedSrc, RoundConst, Shift); // Shift <= 32
}
EmitSatQ(Context, Op.Size, SignedSrc, SignedDst);
EmitVectorInsertTmp(Context, Part + Index, Op.Size);
}
Context.EmitLdvectmp();
Context.EmitStvec(Op.Rd);
if (Part == 0)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
// Dst_64 = (Int(Src_64, Signed) + RoundConst) >> Shift;
private static void EmitShrImm_64(
AILEmitterCtx Context,
@ -374,11 +547,6 @@ namespace ChocolArm64.Instruction
long RoundConst,
int Shift)
{
if (((AOpCodeSimd)Context.CurrOp).Size < 3)
{
throw new InvalidOperationException();
}
Context.EmitLdc_I8(RoundConst);
Context.EmitLdc_I4(Shift);
@ -387,41 +555,6 @@ namespace ChocolArm64.Instruction
: nameof(ASoftFallback.UnsignedShrImm_64));
}
private static void EmitVectorShImmNarrowBinarySx(AILEmitterCtx Context, Action Emit, int Imm)
{
EmitVectorShImmNarrowBinaryOp(Context, Emit, Imm, true);
}
private static void EmitVectorShImmNarrowBinaryZx(AILEmitterCtx Context, Action Emit, int Imm)
{
EmitVectorShImmNarrowBinaryOp(Context, Emit, Imm, false);
}
private static void EmitVectorShImmNarrowBinaryOp(AILEmitterCtx Context, Action Emit, int Imm, bool Signed)
{
AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
int Elems = 8 >> Op.Size;
int Part = Op.RegisterSize == ARegisterSize.SIMD128 ? Elems : 0;
for (int Index = 0; Index < Elems; Index++)
{
EmitVectorExtract(Context, Op.Rn, Index, Op.Size + 1, Signed);
Context.EmitLdc_I4(Imm);
Emit();
EmitVectorInsert(Context, Op.Rd, Part + Index, Op.Size);
}
if (Part == 0)
{
EmitVectorZeroUpper(Context, Op.Rd);
}
}
private static void EmitVectorShImmWidenBinarySx(AILEmitterCtx Context, Action Emit, int Imm)
{
EmitVectorShImmWidenBinaryOp(Context, Emit, Imm, true);