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using ARMeilleure.Decoders;
using ARMeilleure.IntermediateRepresentation;
using ARMeilleure.State;
using ARMeilleure.Translation;
using System;
using static ARMeilleure.Instructions.InstEmitHelper;
using static ARMeilleure.Instructions.InstEmitSimdHelper;
using static ARMeilleure.Instructions.InstEmitSimdHelper32;
using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
namespace ARMeilleure.Instructions
{
using Func2I = Func<Operand, Operand, Operand>;
static partial class InstEmit32
{
public static void Vceq_V(ArmEmitterContext context)
{
if (Optimizations.FastFP && Optimizations.UseSse2)
{
EmitSse2OrAvxCmpOpF32(context, CmpCondition.Equal, false);
}
else
{
EmitCmpOpF32(context, nameof(SoftFloat32.FPCompareEQFpscr), false);
}
}
public static void Vceq_I(ArmEmitterContext context)
{
EmitCmpOpI32(context, context.ICompareEqual, context.ICompareEqual, false, false);
}
public static void Vceq_Z(ArmEmitterContext context)
{
OpCode32Simd op = (OpCode32Simd)context.CurrOp;
if (op.F)
{
if (Optimizations.FastFP && Optimizations.UseSse2)
{
EmitSse2OrAvxCmpOpF32(context, CmpCondition.Equal, true);
}
else
{
EmitCmpOpF32(context, nameof(SoftFloat32.FPCompareEQFpscr), true);
}
}
else
{
EmitCmpOpI32(context, context.ICompareEqual, context.ICompareEqual, true, false);
}
}
public static void Vcge_V(ArmEmitterContext context)
{
if (Optimizations.FastFP && Optimizations.UseAvx)
{
EmitSse2OrAvxCmpOpF32(context, CmpCondition.GreaterThanOrEqual, false);
}
else
{
EmitCmpOpF32(context, nameof(SoftFloat32.FPCompareGEFpscr), false);
}
}
public static void Vcge_I(ArmEmitterContext context)
{
OpCode32SimdReg op = (OpCode32SimdReg)context.CurrOp;
EmitCmpOpI32(context, context.ICompareGreaterOrEqual, context.ICompareGreaterOrEqualUI, false, !op.U);
}
public static void Vcge_Z(ArmEmitterContext context)
{
OpCode32Simd op = (OpCode32Simd)context.CurrOp;
if (op.F)
{
if (Optimizations.FastFP && Optimizations.UseAvx)
{
EmitSse2OrAvxCmpOpF32(context, CmpCondition.GreaterThanOrEqual, true);
}
else
{
EmitCmpOpF32(context, nameof(SoftFloat32.FPCompareGEFpscr), true);
}
}
else
{
EmitCmpOpI32(context, context.ICompareGreaterOrEqual, context.ICompareGreaterOrEqualUI, true, true);
}
}
public static void Vcgt_V(ArmEmitterContext context)
{
if (Optimizations.FastFP && Optimizations.UseAvx)
{
EmitSse2OrAvxCmpOpF32(context, CmpCondition.GreaterThan, false);
}
else
{
EmitCmpOpF32(context, nameof(SoftFloat32.FPCompareGTFpscr), false);
}
}
public static void Vcgt_I(ArmEmitterContext context)
{
OpCode32SimdReg op = (OpCode32SimdReg)context.CurrOp;
EmitCmpOpI32(context, context.ICompareGreater, context.ICompareGreaterUI, false, !op.U);
}
public static void Vcgt_Z(ArmEmitterContext context)
{
OpCode32Simd op = (OpCode32Simd)context.CurrOp;
if (op.F)
{
if (Optimizations.FastFP && Optimizations.UseAvx)
{
EmitSse2OrAvxCmpOpF32(context, CmpCondition.GreaterThan, true);
}
else
{
EmitCmpOpF32(context, nameof(SoftFloat32.FPCompareGTFpscr), true);
}
}
else
{
EmitCmpOpI32(context, context.ICompareGreater, context.ICompareGreaterUI, true, true);
}
}
public static void Vcle_Z(ArmEmitterContext context)
{
OpCode32Simd op = (OpCode32Simd)context.CurrOp;
if (op.F)
{
if (Optimizations.FastFP && Optimizations.UseSse2)
{
EmitSse2OrAvxCmpOpF32(context, CmpCondition.LessThanOrEqual, true);
}
else
{
EmitCmpOpF32(context, nameof(SoftFloat32.FPCompareLEFpscr), true);
}
}
else
{
EmitCmpOpI32(context, context.ICompareLessOrEqual, context.ICompareLessOrEqualUI, true, true);
}
}
public static void Vclt_Z(ArmEmitterContext context)
{
OpCode32Simd op = (OpCode32Simd)context.CurrOp;
if (op.F)
{
if (Optimizations.FastFP && Optimizations.UseSse2)
{
EmitSse2OrAvxCmpOpF32(context, CmpCondition.LessThan, true);
}
else
{
EmitCmpOpF32(context, nameof(SoftFloat32.FPCompareLTFpscr), true);
}
}
else
{
EmitCmpOpI32(context, context.ICompareLess, context.ICompareLessUI, true, true);
}
}
private static void EmitCmpOpF32(ArmEmitterContext context, string name, bool zero)
{
if (zero)
{
EmitVectorUnaryOpF32(context, (m) =>
{
Operand zeroOp = m.Type == OperandType.FP64 ? ConstF(0.0d) : ConstF(0.0f);
return EmitSoftFloatCallDefaultFpscr(context, name, m, zeroOp);
});
}
else
{
EmitVectorBinaryOpF32(context, (n, m) =>
{
return EmitSoftFloatCallDefaultFpscr(context, name, n, m);
});
}
}
private static Operand ZerosOrOnes(ArmEmitterContext context, Operand fromBool, OperandType baseType)
{
var ones = (baseType == OperandType.I64) ? Const(-1L) : Const(-1);
return context.ConditionalSelect(fromBool, ones, Const(baseType, 0L));
}
private static void EmitCmpOpI32(
ArmEmitterContext context,
Func2I signedOp,
Func2I unsignedOp,
bool zero,
bool signed)
{
if (zero)
{
if (signed)
{
EmitVectorUnaryOpSx32(context, (m) =>
{
OperandType type = m.Type;
Operand zeroV = (type == OperandType.I64) ? Const(0L) : Const(0);
return ZerosOrOnes(context, signedOp(m, zeroV), type);
});
}
else
{
EmitVectorUnaryOpZx32(context, (m) =>
{
OperandType type = m.Type;
Operand zeroV = (type == OperandType.I64) ? Const(0L) : Const(0);
return ZerosOrOnes(context, unsignedOp(m, zeroV), type);
});
}
}
else
{
if (signed)
{
EmitVectorBinaryOpSx32(context, (n, m) => ZerosOrOnes(context, signedOp(n, m), n.Type));
}
else
{
EmitVectorBinaryOpZx32(context, (n, m) => ZerosOrOnes(context, unsignedOp(n, m), n.Type));
}
}
}
public static void Vcmp(ArmEmitterContext context)
{
EmitVcmpOrVcmpe(context, false);
}
public static void Vcmpe(ArmEmitterContext context)
{
EmitVcmpOrVcmpe(context, true);
}
private static void EmitVcmpOrVcmpe(ArmEmitterContext context, bool signalNaNs)
{
OpCode32SimdS op = (OpCode32SimdS)context.CurrOp;
bool cmpWithZero = (op.Opc & 2) != 0;
int sizeF = op.Size & 1;
if (Optimizations.FastFP && (signalNaNs ? Optimizations.UseAvx : Optimizations.UseSse2))
{
CmpCondition cmpOrdered = signalNaNs ? CmpCondition.OrderedS : CmpCondition.OrderedQ;
bool doubleSize = sizeF != 0;
int shift = doubleSize ? 1 : 2;
Operand m = GetVecA32(op.Vm >> shift);
Operand n = GetVecA32(op.Vd >> shift);
n = EmitSwapScalar(context, n, op.Vd, doubleSize);
m = cmpWithZero ? context.VectorZero() : EmitSwapScalar(context, m, op.Vm, doubleSize);
Operand lblNaN = Label();
Operand lblEnd = Label();
if (!doubleSize)
{
Operand ordMask = context.AddIntrinsic(Intrinsic.X86Cmpss, n, m, Const((int)cmpOrdered));
Operand isOrdered = context.AddIntrinsicInt(Intrinsic.X86Cvtsi2si, ordMask);
context.BranchIfFalse(lblNaN, isOrdered);
Operand cf = context.AddIntrinsicInt(Intrinsic.X86Comissge, n, m);
Operand zf = context.AddIntrinsicInt(Intrinsic.X86Comisseq, n, m);
Operand nf = context.AddIntrinsicInt(Intrinsic.X86Comisslt, n, m);
SetFpFlag(context, FPState.VFlag, Const(0));
SetFpFlag(context, FPState.CFlag, cf);
SetFpFlag(context, FPState.ZFlag, zf);
SetFpFlag(context, FPState.NFlag, nf);
}
else
{
Operand ordMask = context.AddIntrinsic(Intrinsic.X86Cmpsd, n, m, Const((int)cmpOrdered));
Operand isOrdered = context.AddIntrinsicLong(Intrinsic.X86Cvtsi2si, ordMask);
context.BranchIfFalse(lblNaN, isOrdered);
Operand cf = context.AddIntrinsicInt(Intrinsic.X86Comisdge, n, m);
Operand zf = context.AddIntrinsicInt(Intrinsic.X86Comisdeq, n, m);
Operand nf = context.AddIntrinsicInt(Intrinsic.X86Comisdlt, n, m);
SetFpFlag(context, FPState.VFlag, Const(0));
SetFpFlag(context, FPState.CFlag, cf);
SetFpFlag(context, FPState.ZFlag, zf);
SetFpFlag(context, FPState.NFlag, nf);
}
context.Branch(lblEnd);
context.MarkLabel(lblNaN);
SetFpFlag(context, FPState.VFlag, Const(1));
SetFpFlag(context, FPState.CFlag, Const(1));
SetFpFlag(context, FPState.ZFlag, Const(0));
SetFpFlag(context, FPState.NFlag, Const(0));
context.MarkLabel(lblEnd);
}
else
{
OperandType type = sizeF != 0 ? OperandType.FP64 : OperandType.FP32;
Operand ne = ExtractScalar(context, type, op.Vd);
Operand me;
if (cmpWithZero)
{
me = sizeF == 0 ? ConstF(0f) : ConstF(0d);
}
else
{
me = ExtractScalar(context, type, op.Vm);
}
Operand nzcv = EmitSoftFloatCall(context, nameof(SoftFloat32.FPCompare), ne, me, Const(signalNaNs));
EmitSetFpscrNzcv(context, nzcv);
}
}
private static void EmitSetFpscrNzcv(ArmEmitterContext context, Operand nzcv)
{
Operand Extract(Operand value, int bit)
{
if (bit != 0)
{
value = context.ShiftRightUI(value, Const(bit));
}
value = context.BitwiseAnd(value, Const(1));
return value;
}
SetFpFlag(context, FPState.VFlag, Extract(nzcv, 0));
SetFpFlag(context, FPState.CFlag, Extract(nzcv, 1));
SetFpFlag(context, FPState.ZFlag, Extract(nzcv, 2));
SetFpFlag(context, FPState.NFlag, Extract(nzcv, 3));
}
private static void EmitSse2OrAvxCmpOpF32(ArmEmitterContext context, CmpCondition cond, bool zero)
{
OpCode32Simd op = (OpCode32Simd)context.CurrOp;
int sizeF = op.Size & 1;
Intrinsic inst = (sizeF == 0) ? Intrinsic.X86Cmpps : Intrinsic.X86Cmppd;
if (zero)
{
EmitVectorUnaryOpSimd32(context, (m) =>
{
return context.AddIntrinsic(inst, m, context.VectorZero(), Const((int)cond));
});
}
else
{
EmitVectorBinaryOpSimd32(context, (n, m) =>
{
return context.AddIntrinsic(inst, n, m, Const((int)cond));
});
}
}
}
}
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