5af8ce7c38
* A64: Add fast path for Fcvtas_Gp/S/V, Fcvtau_Gp/S/V and Frinta_S/V instructions; they use "Round to Nearest with Ties to Away" rounding mode not supported in x86. All instructions involved have been tested locally in both release and debug modes, in both lowcq and highcq. The titles Mario Strikers and Super Smash Bros. U. use these instructions intensively. * Update Ptc.cs * A32: Add fast path for Vcvta_RM, Vrinta_RM and Vrinta_V instructions aswell.
644 lines
24 KiB
C#
644 lines
24 KiB
C#
using ARMeilleure.Decoders;
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using ARMeilleure.IntermediateRepresentation;
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using ARMeilleure.State;
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using ARMeilleure.Translation;
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using System;
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using System.Diagnostics;
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using System.Reflection;
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using static ARMeilleure.Instructions.InstEmitHelper;
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using static ARMeilleure.Instructions.InstEmitSimdHelper;
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using static ARMeilleure.Instructions.InstEmitSimdHelper32;
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using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
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namespace ARMeilleure.Instructions
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{
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static partial class InstEmit32
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{
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private static int FlipVdBits(int vd, bool lowBit)
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{
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if (lowBit)
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{
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// Move the low bit to the top.
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return ((vd & 0x1) << 4) | (vd >> 1);
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}
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else
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{
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// Move the high bit to the bottom.
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return ((vd & 0xf) << 1) | (vd >> 4);
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}
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}
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private static Operand EmitSaturateFloatToInt(ArmEmitterContext context, Operand op1, bool unsigned)
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{
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MethodInfo info;
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if (op1.Type == OperandType.FP64)
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{
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info = unsigned
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? typeof(SoftFallback).GetMethod(nameof(SoftFallback.SatF64ToU32))
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: typeof(SoftFallback).GetMethod(nameof(SoftFallback.SatF64ToS32));
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}
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else
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{
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info = unsigned
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? typeof(SoftFallback).GetMethod(nameof(SoftFallback.SatF32ToU32))
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: typeof(SoftFallback).GetMethod(nameof(SoftFallback.SatF32ToS32));
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}
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return context.Call(info, op1);
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}
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public static void Vcvt_V(ArmEmitterContext context)
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{
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OpCode32Simd op = (OpCode32Simd)context.CurrOp;
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bool unsigned = (op.Opc & 1) != 0;
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bool toInteger = (op.Opc & 2) != 0;
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OperandType floatSize = (op.Size == 2) ? OperandType.FP32 : OperandType.FP64;
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if (toInteger)
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{
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if (Optimizations.UseSse41)
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{
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EmitSse41ConvertVector32(context, FPRoundingMode.TowardsZero, !unsigned);
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}
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else
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{
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EmitVectorUnaryOpF32(context, (op1) =>
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{
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return EmitSaturateFloatToInt(context, op1, unsigned);
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});
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}
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}
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else
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{
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if (Optimizations.UseSse2)
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{
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EmitVectorUnaryOpSimd32(context, (n) =>
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{
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if (unsigned)
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{
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Operand mask = X86GetAllElements(context, 0x47800000);
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Operand res = context.AddIntrinsic(Intrinsic.X86Psrld, n, Const(16));
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res = context.AddIntrinsic(Intrinsic.X86Cvtdq2ps, res);
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res = context.AddIntrinsic(Intrinsic.X86Mulps, res, mask);
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Operand res2 = context.AddIntrinsic(Intrinsic.X86Pslld, n, Const(16));
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res2 = context.AddIntrinsic(Intrinsic.X86Psrld, res2, Const(16));
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res2 = context.AddIntrinsic(Intrinsic.X86Cvtdq2ps, res2);
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return context.AddIntrinsic(Intrinsic.X86Addps, res, res2);
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}
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else
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{
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return context.AddIntrinsic(Intrinsic.X86Cvtdq2ps, n);
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}
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});
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}
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else
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{
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if (unsigned)
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{
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EmitVectorUnaryOpZx32(context, (op1) => EmitFPConvert(context, op1, floatSize, false));
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}
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else
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{
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EmitVectorUnaryOpSx32(context, (op1) => EmitFPConvert(context, op1, floatSize, true));
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}
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}
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}
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}
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public static void Vcvt_FD(ArmEmitterContext context)
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{
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OpCode32SimdS op = (OpCode32SimdS)context.CurrOp;
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int vm = op.Vm;
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int vd;
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if (op.Size == 3)
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{
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vd = FlipVdBits(op.Vd, false);
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// Double to single.
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Operand fp = ExtractScalar(context, OperandType.FP64, vm);
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Operand res = context.ConvertToFP(OperandType.FP32, fp);
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InsertScalar(context, vd, res);
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}
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else
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{
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vd = FlipVdBits(op.Vd, true);
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// Single to double.
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Operand fp = ExtractScalar(context, OperandType.FP32, vm);
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Operand res = context.ConvertToFP(OperandType.FP64, fp);
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InsertScalar(context, vd, res);
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}
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}
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// VCVT (floating-point to integer, floating-point) | VCVT (integer to floating-point, floating-point).
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public static void Vcvt_FI(ArmEmitterContext context)
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{
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OpCode32SimdCvtFI op = (OpCode32SimdCvtFI)context.CurrOp;
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bool toInteger = (op.Opc2 & 0b100) != 0;
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OperandType floatSize = op.RegisterSize == RegisterSize.Int64 ? OperandType.FP64 : OperandType.FP32;
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if (toInteger)
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{
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bool unsigned = (op.Opc2 & 1) == 0;
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bool roundWithFpscr = op.Opc != 1;
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if (!roundWithFpscr && Optimizations.UseSse41)
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{
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EmitSse41ConvertInt32(context, FPRoundingMode.TowardsZero, !unsigned);
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}
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else
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{
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Operand toConvert = ExtractScalar(context, floatSize, op.Vm);
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// TODO: Fast Path.
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if (roundWithFpscr)
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{
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toConvert = EmitRoundByRMode(context, toConvert);
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}
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// Round towards zero.
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Operand asInteger = EmitSaturateFloatToInt(context, toConvert, unsigned);
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InsertScalar(context, op.Vd, asInteger);
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}
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}
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else
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{
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bool unsigned = op.Opc == 0;
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Operand toConvert = ExtractScalar(context, OperandType.I32, op.Vm);
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Operand asFloat = EmitFPConvert(context, toConvert, floatSize, !unsigned);
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InsertScalar(context, op.Vd, asFloat);
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}
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}
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private static Operand EmitRoundMathCall(ArmEmitterContext context, MidpointRounding roundMode, Operand n)
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{
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IOpCode32Simd op = (IOpCode32Simd)context.CurrOp;
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string name = nameof(Math.Round);
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MethodInfo info = (op.Size & 1) == 0
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? typeof(MathF).GetMethod(name, new Type[] { typeof(float), typeof(MidpointRounding) })
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: typeof(Math). GetMethod(name, new Type[] { typeof(double), typeof(MidpointRounding) });
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return context.Call(info, n, Const((int)roundMode));
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}
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private static FPRoundingMode RMToRoundMode(int rm)
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{
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FPRoundingMode roundMode;
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switch (rm)
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{
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case 0b00:
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roundMode = FPRoundingMode.ToNearestAway;
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break;
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case 0b01:
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roundMode = FPRoundingMode.ToNearest;
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break;
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case 0b10:
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roundMode = FPRoundingMode.TowardsPlusInfinity;
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break;
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case 0b11:
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roundMode = FPRoundingMode.TowardsMinusInfinity;
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break;
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default:
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throw new ArgumentOutOfRangeException(nameof(rm));
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}
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return roundMode;
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}
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// VCVTA/M/N/P (floating-point).
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public static void Vcvt_RM(ArmEmitterContext context)
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{
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OpCode32SimdCvtFI op = (OpCode32SimdCvtFI)context.CurrOp; // toInteger == true (opCode<18> == 1 => Opc2<2> == 1).
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OperandType floatSize = op.RegisterSize == RegisterSize.Int64 ? OperandType.FP64 : OperandType.FP32;
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bool unsigned = op.Opc == 0;
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int rm = op.Opc2 & 3;
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if (Optimizations.UseSse41)
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{
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EmitSse41ConvertInt32(context, RMToRoundMode(rm), !unsigned);
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}
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else
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{
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Operand toConvert = ExtractScalar(context, floatSize, op.Vm);
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switch (rm)
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{
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case 0b00: // Away
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toConvert = EmitRoundMathCall(context, MidpointRounding.AwayFromZero, toConvert);
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break;
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case 0b01: // Nearest
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toConvert = EmitRoundMathCall(context, MidpointRounding.ToEven, toConvert);
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break;
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case 0b10: // Towards positive infinity
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toConvert = EmitUnaryMathCall(context, nameof(Math.Ceiling), toConvert);
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break;
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case 0b11: // Towards negative infinity
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toConvert = EmitUnaryMathCall(context, nameof(Math.Floor), toConvert);
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break;
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}
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Operand asInteger = EmitSaturateFloatToInt(context, toConvert, unsigned);
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InsertScalar(context, op.Vd, asInteger);
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}
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}
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// VRINTA/M/N/P (floating-point).
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public static void Vrint_RM(ArmEmitterContext context)
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{
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OpCode32SimdS op = (OpCode32SimdS)context.CurrOp;
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OperandType floatSize = op.RegisterSize == RegisterSize.Int64 ? OperandType.FP64 : OperandType.FP32;
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int rm = op.Opc2 & 3;
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if (Optimizations.UseSse41)
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{
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EmitScalarUnaryOpSimd32(context, (m) =>
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{
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FPRoundingMode roundMode = RMToRoundMode(rm);
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if (roundMode != FPRoundingMode.ToNearestAway)
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{
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Intrinsic inst = (op.Size & 1) == 0 ? Intrinsic.X86Roundss : Intrinsic.X86Roundsd;
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return context.AddIntrinsic(inst, m, Const(X86GetRoundControl(roundMode)));
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}
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else
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{
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return EmitSse41RoundToNearestWithTiesToAwayOpF(context, m, scalar: true);
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}
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});
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}
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else
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{
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Operand toConvert = ExtractScalar(context, floatSize, op.Vm);
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switch (rm)
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{
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case 0b00: // Away
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toConvert = EmitRoundMathCall(context, MidpointRounding.AwayFromZero, toConvert);
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break;
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case 0b01: // Nearest
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toConvert = EmitRoundMathCall(context, MidpointRounding.ToEven, toConvert);
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break;
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case 0b10: // Towards positive infinity
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toConvert = EmitUnaryMathCall(context, nameof(Math.Ceiling), toConvert);
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break;
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case 0b11: // Towards negative infinity
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toConvert = EmitUnaryMathCall(context, nameof(Math.Floor), toConvert);
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break;
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}
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InsertScalar(context, op.Vd, toConvert);
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}
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}
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// VRINTA (vector).
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public static void Vrinta_V(ArmEmitterContext context)
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{
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if (Optimizations.UseSse41)
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{
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EmitVectorUnaryOpSimd32(context, (m) =>
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{
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return EmitSse41RoundToNearestWithTiesToAwayOpF(context, m, scalar: false);
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});
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}
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else
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{
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EmitVectorUnaryOpF32(context, (m) => EmitRoundMathCall(context, MidpointRounding.AwayFromZero, m));
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}
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}
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// VRINTM (vector).
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public static void Vrintm_V(ArmEmitterContext context)
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{
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if (Optimizations.UseSse2)
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{
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EmitVectorUnaryOpSimd32(context, (m) =>
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{
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return context.AddIntrinsic(Intrinsic.X86Roundps, m, Const(X86GetRoundControl(FPRoundingMode.TowardsMinusInfinity)));
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});
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}
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else
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{
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EmitVectorUnaryOpF32(context, (m) => EmitUnaryMathCall(context, nameof(Math.Floor), m));
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}
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}
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// VRINTN (vector).
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public static void Vrintn_V(ArmEmitterContext context)
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{
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if (Optimizations.UseSse2)
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{
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EmitVectorUnaryOpSimd32(context, (m) =>
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{
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return context.AddIntrinsic(Intrinsic.X86Roundps, m, Const(X86GetRoundControl(FPRoundingMode.ToNearest)));
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});
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}
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else
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{
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EmitVectorUnaryOpF32(context, (m) => EmitRoundMathCall(context, MidpointRounding.ToEven, m));
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}
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}
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// VRINTP (vector).
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public static void Vrintp_V(ArmEmitterContext context)
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{
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if (Optimizations.UseSse2)
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{
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EmitVectorUnaryOpSimd32(context, (m) =>
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{
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return context.AddIntrinsic(Intrinsic.X86Roundps, m, Const(X86GetRoundControl(FPRoundingMode.TowardsPlusInfinity)));
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});
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}
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else
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{
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EmitVectorUnaryOpF32(context, (m) => EmitUnaryMathCall(context, nameof(Math.Ceiling), m));
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}
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}
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// VRINTZ (floating-point).
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public static void Vrint_Z(ArmEmitterContext context)
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{
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OpCode32SimdS op = (OpCode32SimdS)context.CurrOp;
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if (Optimizations.UseSse2)
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{
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EmitScalarUnaryOpSimd32(context, (m) =>
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{
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Intrinsic inst = (op.Size & 1) == 0 ? Intrinsic.X86Roundss : Intrinsic.X86Roundsd;
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return context.AddIntrinsic(inst, m, Const(X86GetRoundControl(FPRoundingMode.TowardsZero)));
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});
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}
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else
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{
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EmitScalarUnaryOpF32(context, (op1) => EmitUnaryMathCall(context, nameof(Math.Truncate), op1));
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}
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}
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// VRINTX (floating-point).
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public static void Vrintx_S(ArmEmitterContext context)
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{
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EmitScalarUnaryOpF32(context, (op1) =>
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{
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return EmitRoundByRMode(context, op1);
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});
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}
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private static Operand EmitFPConvert(ArmEmitterContext context, Operand value, OperandType type, bool signed)
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{
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Debug.Assert(value.Type == OperandType.I32 || value.Type == OperandType.I64);
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if (signed)
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{
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return context.ConvertToFP(type, value);
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}
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else
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{
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return context.ConvertToFPUI(type, value);
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}
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}
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private static void EmitSse41ConvertInt32(ArmEmitterContext context, FPRoundingMode roundMode, bool signed)
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{
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// A port of the similar round function in InstEmitSimdCvt.
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OpCode32SimdCvtFI op = (OpCode32SimdCvtFI)context.CurrOp;
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bool doubleSize = (op.Size & 1) != 0;
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int shift = doubleSize ? 1 : 2;
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Operand n = GetVecA32(op.Vm >> shift);
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n = EmitSwapScalar(context, n, op.Vm, doubleSize);
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if (!doubleSize)
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{
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Operand nRes = context.AddIntrinsic(Intrinsic.X86Cmpss, n, n, Const((int)CmpCondition.OrderedQ));
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nRes = context.AddIntrinsic(Intrinsic.X86Pand, nRes, n);
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if (roundMode != FPRoundingMode.ToNearestAway)
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{
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nRes = context.AddIntrinsic(Intrinsic.X86Roundss, nRes, Const(X86GetRoundControl(roundMode)));
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}
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else
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{
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nRes = EmitSse41RoundToNearestWithTiesToAwayOpF(context, nRes, scalar: true);
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}
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Operand zero = context.VectorZero();
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Operand nCmp;
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Operand nIntOrLong2 = default;
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if (!signed)
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{
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nCmp = context.AddIntrinsic(Intrinsic.X86Cmpss, nRes, zero, Const((int)CmpCondition.NotLessThanOrEqual));
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nRes = context.AddIntrinsic(Intrinsic.X86Pand, nRes, nCmp);
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}
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int fpMaxVal = 0x4F000000; // 2.14748365E9f (2147483648)
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Operand fpMaxValMask = X86GetScalar(context, fpMaxVal);
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Operand nIntOrLong = context.AddIntrinsicInt(Intrinsic.X86Cvtss2si, nRes);
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if (!signed)
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{
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nRes = context.AddIntrinsic(Intrinsic.X86Subss, nRes, fpMaxValMask);
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nCmp = context.AddIntrinsic(Intrinsic.X86Cmpss, nRes, zero, Const((int)CmpCondition.NotLessThanOrEqual));
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nRes = context.AddIntrinsic(Intrinsic.X86Pand, nRes, nCmp);
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nIntOrLong2 = context.AddIntrinsicInt(Intrinsic.X86Cvtss2si, nRes);
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}
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nRes = context.AddIntrinsic(Intrinsic.X86Cmpss, nRes, fpMaxValMask, Const((int)CmpCondition.NotLessThan));
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Operand nInt = context.AddIntrinsicInt(Intrinsic.X86Cvtsi2si, nRes);
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Operand dRes;
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if (signed)
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{
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dRes = context.BitwiseExclusiveOr(nIntOrLong, nInt);
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}
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else
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{
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dRes = context.BitwiseExclusiveOr(nIntOrLong2, nInt);
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dRes = context.Add(dRes, nIntOrLong);
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}
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InsertScalar(context, op.Vd, dRes);
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}
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else
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{
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Operand nRes = context.AddIntrinsic(Intrinsic.X86Cmpsd, n, n, Const((int)CmpCondition.OrderedQ));
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nRes = context.AddIntrinsic(Intrinsic.X86Pand, nRes, n);
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if (roundMode != FPRoundingMode.ToNearestAway)
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{
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nRes = context.AddIntrinsic(Intrinsic.X86Roundsd, nRes, Const(X86GetRoundControl(roundMode)));
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}
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else
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{
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nRes = EmitSse41RoundToNearestWithTiesToAwayOpF(context, nRes, scalar: true);
|
|
}
|
|
|
|
Operand zero = context.VectorZero();
|
|
|
|
Operand nCmp;
|
|
Operand nIntOrLong2 = default;
|
|
|
|
if (!signed)
|
|
{
|
|
nCmp = context.AddIntrinsic(Intrinsic.X86Cmpsd, nRes, zero, Const((int)CmpCondition.NotLessThanOrEqual));
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Pand, nRes, nCmp);
|
|
}
|
|
|
|
long fpMaxVal = 0x41E0000000000000L; // 2147483648.0000000d (2147483648)
|
|
|
|
Operand fpMaxValMask = X86GetScalar(context, fpMaxVal);
|
|
|
|
Operand nIntOrLong = context.AddIntrinsicInt(Intrinsic.X86Cvtsd2si, nRes);
|
|
|
|
if (!signed)
|
|
{
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Subsd, nRes, fpMaxValMask);
|
|
|
|
nCmp = context.AddIntrinsic(Intrinsic.X86Cmpsd, nRes, zero, Const((int)CmpCondition.NotLessThanOrEqual));
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Pand, nRes, nCmp);
|
|
|
|
nIntOrLong2 = context.AddIntrinsicInt(Intrinsic.X86Cvtsd2si, nRes);
|
|
}
|
|
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Cmpsd, nRes, fpMaxValMask, Const((int)CmpCondition.NotLessThan));
|
|
|
|
Operand nLong = context.AddIntrinsicLong(Intrinsic.X86Cvtsi2si, nRes);
|
|
nLong = context.ConvertI64ToI32(nLong);
|
|
|
|
Operand dRes;
|
|
if (signed)
|
|
{
|
|
dRes = context.BitwiseExclusiveOr(nIntOrLong, nLong);
|
|
}
|
|
else
|
|
{
|
|
dRes = context.BitwiseExclusiveOr(nIntOrLong2, nLong);
|
|
dRes = context.Add(dRes, nIntOrLong);
|
|
}
|
|
|
|
InsertScalar(context, op.Vd, dRes);
|
|
}
|
|
}
|
|
|
|
private static void EmitSse41ConvertVector32(ArmEmitterContext context, FPRoundingMode roundMode, bool signed)
|
|
{
|
|
OpCode32Simd op = (OpCode32Simd)context.CurrOp;
|
|
|
|
EmitVectorUnaryOpSimd32(context, (n) =>
|
|
{
|
|
int sizeF = op.Size & 1;
|
|
|
|
if (sizeF == 0)
|
|
{
|
|
Operand nRes = context.AddIntrinsic(Intrinsic.X86Cmpps, n, n, Const((int)CmpCondition.OrderedQ));
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Pand, nRes, n);
|
|
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Roundps, nRes, Const(X86GetRoundControl(roundMode)));
|
|
|
|
Operand zero = context.VectorZero();
|
|
Operand nCmp;
|
|
if (!signed)
|
|
{
|
|
nCmp = context.AddIntrinsic(Intrinsic.X86Cmpps, nRes, zero, Const((int)CmpCondition.NotLessThanOrEqual));
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Pand, nRes, nCmp);
|
|
}
|
|
|
|
Operand fpMaxValMask = X86GetAllElements(context, 0x4F000000); // 2.14748365E9f (2147483648)
|
|
|
|
Operand nInt = context.AddIntrinsic(Intrinsic.X86Cvtps2dq, nRes);
|
|
Operand nInt2 = default;
|
|
|
|
if (!signed)
|
|
{
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Subps, nRes, fpMaxValMask);
|
|
|
|
nCmp = context.AddIntrinsic(Intrinsic.X86Cmpps, nRes, zero, Const((int)CmpCondition.NotLessThanOrEqual));
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Pand, nRes, nCmp);
|
|
|
|
nInt2 = context.AddIntrinsic(Intrinsic.X86Cvtps2dq, nRes);
|
|
}
|
|
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Cmpps, nRes, fpMaxValMask, Const((int)CmpCondition.NotLessThan));
|
|
|
|
if (signed)
|
|
{
|
|
return context.AddIntrinsic(Intrinsic.X86Pxor, nInt, nRes);
|
|
}
|
|
else
|
|
{
|
|
Operand dRes = context.AddIntrinsic(Intrinsic.X86Pxor, nInt2, nRes);
|
|
return context.AddIntrinsic(Intrinsic.X86Paddd, dRes, nInt);
|
|
}
|
|
}
|
|
else /* if (sizeF == 1) */
|
|
{
|
|
Operand nRes = context.AddIntrinsic(Intrinsic.X86Cmppd, n, n, Const((int)CmpCondition.OrderedQ));
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Pand, nRes, n);
|
|
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Roundpd, nRes, Const(X86GetRoundControl(roundMode)));
|
|
|
|
Operand zero = context.VectorZero();
|
|
Operand nCmp;
|
|
if (!signed)
|
|
{
|
|
nCmp = context.AddIntrinsic(Intrinsic.X86Cmppd, nRes, zero, Const((int)CmpCondition.NotLessThanOrEqual));
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Pand, nRes, nCmp);
|
|
}
|
|
|
|
Operand fpMaxValMask = X86GetAllElements(context, 0x43E0000000000000L); // 9.2233720368547760E18d (9223372036854775808)
|
|
|
|
Operand nLong = InstEmit.EmitSse2CvtDoubleToInt64OpF(context, nRes, false);
|
|
Operand nLong2 = default;
|
|
|
|
if (!signed)
|
|
{
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Subpd, nRes, fpMaxValMask);
|
|
|
|
nCmp = context.AddIntrinsic(Intrinsic.X86Cmppd, nRes, zero, Const((int)CmpCondition.NotLessThanOrEqual));
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Pand, nRes, nCmp);
|
|
|
|
nLong2 = InstEmit.EmitSse2CvtDoubleToInt64OpF(context, nRes, false);
|
|
}
|
|
|
|
nRes = context.AddIntrinsic(Intrinsic.X86Cmppd, nRes, fpMaxValMask, Const((int)CmpCondition.NotLessThan));
|
|
|
|
if (signed)
|
|
{
|
|
return context.AddIntrinsic(Intrinsic.X86Pxor, nLong, nRes);
|
|
}
|
|
else
|
|
{
|
|
Operand dRes = context.AddIntrinsic(Intrinsic.X86Pxor, nLong2, nRes);
|
|
return context.AddIntrinsic(Intrinsic.X86Paddq, dRes, nLong);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
}
|
|
}
|