Ryujinx/ChocolArm64/Instructions/InstEmitSimdCmp.cs

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using ChocolArm64.Decoders;
using ChocolArm64.State;
using ChocolArm64.Translation;
using System;
using System.Reflection.Emit;
using System.Runtime.Intrinsics.X86;
using static ChocolArm64.Instructions.InstEmitAluHelper;
using static ChocolArm64.Instructions.InstEmitSimdHelper;
namespace ChocolArm64.Instructions
{
static partial class InstEmit
{
public static void Cmeq_S(ILEmitterCtx context)
{
EmitCmp(context, OpCodes.Beq_S, scalar: true);
}
public static void Cmeq_V(ILEmitterCtx context)
{
if (context.CurrOp is OpCodeSimdReg64 op)
{
if (op.Size < 3 && Optimizations.UseSse2)
{
EmitSse2Op(context, nameof(Sse2.CompareEqual));
}
else if (op.Size == 3 && Optimizations.UseSse41)
{
EmitSse41Op(context, nameof(Sse41.CompareEqual));
}
else
{
EmitCmp(context, OpCodes.Beq_S, scalar: false);
}
}
else
{
EmitCmp(context, OpCodes.Beq_S, scalar: false);
}
}
public static void Cmge_S(ILEmitterCtx context)
{
EmitCmp(context, OpCodes.Bge_S, scalar: true);
}
public static void Cmge_V(ILEmitterCtx context)
{
EmitCmp(context, OpCodes.Bge_S, scalar: false);
}
public static void Cmgt_S(ILEmitterCtx context)
{
EmitCmp(context, OpCodes.Bgt_S, scalar: true);
}
public static void Cmgt_V(ILEmitterCtx context)
{
if (context.CurrOp is OpCodeSimdReg64 op)
{
if (op.Size < 3 && Optimizations.UseSse2)
{
EmitSse2Op(context, nameof(Sse2.CompareGreaterThan));
}
else if (op.Size == 3 && Optimizations.UseSse42)
{
EmitSse42Op(context, nameof(Sse42.CompareGreaterThan));
}
else
{
EmitCmp(context, OpCodes.Bgt_S, scalar: false);
}
}
else
{
EmitCmp(context, OpCodes.Bgt_S, scalar: false);
}
}
public static void Cmhi_S(ILEmitterCtx context)
{
EmitCmp(context, OpCodes.Bgt_Un_S, scalar: true);
}
public static void Cmhi_V(ILEmitterCtx context)
{
EmitCmp(context, OpCodes.Bgt_Un_S, scalar: false);
}
public static void Cmhs_S(ILEmitterCtx context)
{
EmitCmp(context, OpCodes.Bge_Un_S, scalar: true);
}
public static void Cmhs_V(ILEmitterCtx context)
{
EmitCmp(context, OpCodes.Bge_Un_S, scalar: false);
}
public static void Cmle_S(ILEmitterCtx context)
{
EmitCmp(context, OpCodes.Ble_S, scalar: true);
}
public static void Cmle_V(ILEmitterCtx context)
{
EmitCmp(context, OpCodes.Ble_S, scalar: false);
}
public static void Cmlt_S(ILEmitterCtx context)
{
EmitCmp(context, OpCodes.Blt_S, scalar: true);
}
public static void Cmlt_V(ILEmitterCtx context)
{
EmitCmp(context, OpCodes.Blt_S, scalar: false);
}
public static void Cmtst_S(ILEmitterCtx context)
{
EmitCmtst(context, scalar: true);
}
public static void Cmtst_V(ILEmitterCtx context)
{
EmitCmtst(context, scalar: false);
}
public static void Fccmp_S(ILEmitterCtx context)
{
OpCodeSimdFcond64 op = (OpCodeSimdFcond64)context.CurrOp;
ILLabel lblTrue = new ILLabel();
ILLabel lblEnd = new ILLabel();
context.EmitCondBranch(lblTrue, op.Cond);
EmitSetNzcv(context, op.Nzcv);
context.Emit(OpCodes.Br, lblEnd);
context.MarkLabel(lblTrue);
Fcmp_S(context);
context.MarkLabel(lblEnd);
}
public static void Fccmpe_S(ILEmitterCtx context)
{
Fccmp_S(context);
}
public static void Fcmeq_S(ILEmitterCtx context)
{
if (context.CurrOp is OpCodeSimdReg64 && Optimizations.UseSse
&& Optimizations.UseSse2)
{
EmitScalarSseOrSse2OpF(context, nameof(Sse.CompareEqualScalar));
}
else
{
EmitScalarFcmp(context, OpCodes.Beq_S);
}
}
public static void Fcmeq_V(ILEmitterCtx context)
{
if (context.CurrOp is OpCodeSimdReg64 && Optimizations.UseSse
&& Optimizations.UseSse2)
{
EmitVectorSseOrSse2OpF(context, nameof(Sse.CompareEqual));
}
else
{
EmitVectorFcmp(context, OpCodes.Beq_S);
}
}
public static void Fcmge_S(ILEmitterCtx context)
{
if (context.CurrOp is OpCodeSimdReg64 && Optimizations.UseSse
&& Optimizations.UseSse2)
{
EmitScalarSseOrSse2OpF(context, nameof(Sse.CompareGreaterThanOrEqualScalar));
}
else
{
EmitScalarFcmp(context, OpCodes.Bge_S);
}
}
public static void Fcmge_V(ILEmitterCtx context)
{
if (context.CurrOp is OpCodeSimdReg64 && Optimizations.UseSse
&& Optimizations.UseSse2)
{
EmitVectorSseOrSse2OpF(context, nameof(Sse.CompareGreaterThanOrEqual));
}
else
{
EmitVectorFcmp(context, OpCodes.Bge_S);
}
}
public static void Fcmgt_S(ILEmitterCtx context)
{
if (context.CurrOp is OpCodeSimdReg64 && Optimizations.UseSse
&& Optimizations.UseSse2)
{
EmitScalarSseOrSse2OpF(context, nameof(Sse.CompareGreaterThanScalar));
}
else
{
EmitScalarFcmp(context, OpCodes.Bgt_S);
}
}
public static void Fcmgt_V(ILEmitterCtx context)
{
if (context.CurrOp is OpCodeSimdReg64 && Optimizations.UseSse
&& Optimizations.UseSse2)
{
EmitVectorSseOrSse2OpF(context, nameof(Sse.CompareGreaterThan));
}
else
{
EmitVectorFcmp(context, OpCodes.Bgt_S);
}
}
public static void Fcmle_S(ILEmitterCtx context)
{
EmitScalarFcmp(context, OpCodes.Ble_S);
}
public static void Fcmle_V(ILEmitterCtx context)
{
EmitVectorFcmp(context, OpCodes.Ble_S);
}
public static void Fcmlt_S(ILEmitterCtx context)
{
EmitScalarFcmp(context, OpCodes.Blt_S);
}
public static void Fcmlt_V(ILEmitterCtx context)
{
EmitVectorFcmp(context, OpCodes.Blt_S);
}
public static void Fcmp_S(ILEmitterCtx context)
{
OpCodeSimdReg64 op = (OpCodeSimdReg64)context.CurrOp;
bool cmpWithZero = !(op is OpCodeSimdFcond64) ? op.Bit3 : false;
//Handle NaN case.
//If any number is NaN, then NZCV = 0011.
if (cmpWithZero)
{
EmitNaNCheck(context, op.Rn);
}
else
{
EmitNaNCheck(context, op.Rn);
EmitNaNCheck(context, op.Rm);
context.Emit(OpCodes.Or);
}
ILLabel lblNaN = new ILLabel();
ILLabel lblEnd = new ILLabel();
context.Emit(OpCodes.Brtrue_S, lblNaN);
void EmitLoadOpers()
{
EmitVectorExtractF(context, op.Rn, 0, op.Size);
if (cmpWithZero)
{
if (op.Size == 0)
{
context.EmitLdc_R4(0f);
}
else /* if (Op.Size == 1) */
{
context.EmitLdc_R8(0d);
}
}
else
{
EmitVectorExtractF(context, op.Rm, 0, op.Size);
}
}
//Z = Rn == Rm
EmitLoadOpers();
context.Emit(OpCodes.Ceq);
context.Emit(OpCodes.Dup);
context.EmitStflg((int)PState.ZBit);
//C = Rn >= Rm
EmitLoadOpers();
context.Emit(OpCodes.Cgt);
context.Emit(OpCodes.Or);
context.EmitStflg((int)PState.CBit);
//N = Rn < Rm
EmitLoadOpers();
context.Emit(OpCodes.Clt);
context.EmitStflg((int)PState.NBit);
//V = 0
context.EmitLdc_I4(0);
context.EmitStflg((int)PState.VBit);
context.Emit(OpCodes.Br_S, lblEnd);
context.MarkLabel(lblNaN);
EmitSetNzcv(context, 0b0011);
context.MarkLabel(lblEnd);
}
public static void Fcmpe_S(ILEmitterCtx context)
{
Fcmp_S(context);
}
private static void EmitNaNCheck(ILEmitterCtx context, int reg)
{
IOpCodeSimd64 op = (IOpCodeSimd64)context.CurrOp;
EmitVectorExtractF(context, reg, 0, op.Size);
if (op.Size == 0)
{
context.EmitCall(typeof(float), nameof(float.IsNaN));
}
else if (op.Size == 1)
{
context.EmitCall(typeof(double), nameof(double.IsNaN));
}
else
{
throw new InvalidOperationException();
}
}
private static void EmitCmp(ILEmitterCtx context, OpCode ilOp, bool scalar)
{
OpCodeSimd64 op = (OpCodeSimd64)context.CurrOp;
int bytes = op.GetBitsCount() >> 3;
int elems = !scalar ? bytes >> op.Size : 1;
ulong szMask = ulong.MaxValue >> (64 - (8 << op.Size));
for (int index = 0; index < elems; index++)
{
EmitVectorExtractSx(context, op.Rn, index, op.Size);
if (op is OpCodeSimdReg64 binOp)
{
EmitVectorExtractSx(context, binOp.Rm, index, op.Size);
}
else
{
context.EmitLdc_I8(0L);
}
ILLabel lblTrue = new ILLabel();
ILLabel lblEnd = new ILLabel();
context.Emit(ilOp, lblTrue);
EmitVectorInsert(context, op.Rd, index, op.Size, 0);
context.Emit(OpCodes.Br_S, lblEnd);
context.MarkLabel(lblTrue);
EmitVectorInsert(context, op.Rd, index, op.Size, (long)szMask);
context.MarkLabel(lblEnd);
}
if ((op.RegisterSize == RegisterSize.Simd64) || scalar)
{
EmitVectorZeroUpper(context, op.Rd);
}
}
private static void EmitCmtst(ILEmitterCtx context, bool scalar)
{
OpCodeSimdReg64 op = (OpCodeSimdReg64)context.CurrOp;
int bytes = op.GetBitsCount() >> 3;
int elems = !scalar ? bytes >> op.Size : 1;
ulong szMask = ulong.MaxValue >> (64 - (8 << op.Size));
for (int index = 0; index < elems; index++)
{
EmitVectorExtractZx(context, op.Rn, index, op.Size);
EmitVectorExtractZx(context, op.Rm, index, op.Size);
ILLabel lblTrue = new ILLabel();
ILLabel lblEnd = new ILLabel();
context.Emit(OpCodes.And);
context.EmitLdc_I8(0L);
context.Emit(OpCodes.Bne_Un_S, lblTrue);
EmitVectorInsert(context, op.Rd, index, op.Size, 0);
context.Emit(OpCodes.Br_S, lblEnd);
context.MarkLabel(lblTrue);
EmitVectorInsert(context, op.Rd, index, op.Size, (long)szMask);
context.MarkLabel(lblEnd);
}
if ((op.RegisterSize == RegisterSize.Simd64) || scalar)
{
EmitVectorZeroUpper(context, op.Rd);
}
}
private static void EmitScalarFcmp(ILEmitterCtx context, OpCode ilOp)
{
EmitFcmp(context, ilOp, 0, scalar: true);
}
private static void EmitVectorFcmp(ILEmitterCtx context, OpCode ilOp)
{
OpCodeSimd64 op = (OpCodeSimd64)context.CurrOp;
int sizeF = op.Size & 1;
int bytes = op.GetBitsCount() >> 3;
int elems = bytes >> sizeF + 2;
for (int index = 0; index < elems; index++)
{
EmitFcmp(context, ilOp, index, scalar: false);
}
if (op.RegisterSize == RegisterSize.Simd64)
{
EmitVectorZeroUpper(context, op.Rd);
}
}
private static void EmitFcmp(ILEmitterCtx context, OpCode ilOp, int index, bool scalar)
{
OpCodeSimd64 op = (OpCodeSimd64)context.CurrOp;
int sizeF = op.Size & 1;
ulong szMask = ulong.MaxValue >> (64 - (32 << sizeF));
EmitVectorExtractF(context, op.Rn, index, sizeF);
if (op is OpCodeSimdReg64 binOp)
{
EmitVectorExtractF(context, binOp.Rm, index, sizeF);
}
else if (sizeF == 0)
{
context.EmitLdc_R4(0f);
}
else /* if (SizeF == 1) */
{
context.EmitLdc_R8(0d);
}
ILLabel lblTrue = new ILLabel();
ILLabel lblEnd = new ILLabel();
context.Emit(ilOp, lblTrue);
if (scalar)
{
EmitVectorZeroAll(context, op.Rd);
}
else
{
EmitVectorInsert(context, op.Rd, index, sizeF + 2, 0);
}
context.Emit(OpCodes.Br_S, lblEnd);
context.MarkLabel(lblTrue);
if (scalar)
{
EmitVectorInsert(context, op.Rd, index, 3, (long)szMask);
EmitVectorZeroUpper(context, op.Rd);
}
else
{
EmitVectorInsert(context, op.Rd, index, sizeF + 2, (long)szMask);
}
context.MarkLabel(lblEnd);
}
}
}