Mirrors/Ryujinx
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

CPU (A64): Add FP16/FP32 fast paths (F16C Intrinsics) for Fcvt_S, Fcvtl_V & Fcvtn_V Instructions. Switch to .NET 5.0.

Browse source 
Nits.

Tests performed successfully in both debug and release mode (for all instructions involved).
This commit is contained in:
LDj3SNuD 2020-10-30 05:23:25 +01:00
parent c248bf9fb4
commit 961b49e923
6 changed files with 80 additions and 27 deletions
Download patch file Download diff file Expand all files Collapse all files

88
ARMeilleure/Instructions/InstEmitSimdCvt.cs
View file

@ -60,21 +60,48 @@ namespace ARMeilleure.Instructions
}
else if (op.Size == 0 && op.Opc == 3) // Single -> Half.
{
Operand ne = context.VectorExtract(OperandType.FP32, GetVec(op.Rn), 0);
if (Optimizations.UseF16c)
{
Debug.Assert(!Optimizations.ForceLegacySse);
Operand res = context.Call(typeof(SoftFloat32_16).GetMethod(nameof(SoftFloat32_16.FPConvert)), ne);
Operand n = GetVec(op.Rn);
res = context.ZeroExtend16(OperandType.I64, res);
Operand res = context.AddIntrinsic(Intrinsic.X86Vcvtps2ph, n, Const(X86GetRoundControl(FPRoundingMode.ToNearest)));
res = context.AddIntrinsic(Intrinsic.X86Pslldq, res, Const(14)); // VectorZeroUpper112()
res = context.AddIntrinsic(Intrinsic.X86Psrldq, res, Const(14));
context.Copy(GetVec(op.Rd), EmitVectorInsert(context, context.VectorZero(), res, 0, 1));
context.Copy(GetVec(op.Rd), res);
}
else
{
Operand ne = context.VectorExtract(OperandType.FP32, GetVec(op.Rn), 0);
Operand res = context.Call(typeof(SoftFloat32_16).GetMethod(nameof(SoftFloat32_16.FPConvert)), ne);
res = context.ZeroExtend16(OperandType.I64, res);
context.Copy(GetVec(op.Rd), EmitVectorInsert(context, context.VectorZero(), res, 0, 1));
}
}
else if (op.Size == 3 && op.Opc == 0) // Half -> Single.
{
Operand ne = EmitVectorExtractZx(context, op.Rn, 0, 1);
if (Optimizations.UseF16c)
{
Debug.Assert(!Optimizations.ForceLegacySse);
Operand res = context.Call(typeof(SoftFloat16_32).GetMethod(nameof(SoftFloat16_32.FPConvert)), ne);
Operand res = context.AddIntrinsic(Intrinsic.X86Vcvtph2ps, GetVec(op.Rn));
res = context.VectorZeroUpper96(res);
context.Copy(GetVec(op.Rd), context.VectorInsert(context.VectorZero(), res, 0));
context.Copy(GetVec(op.Rd), res);
}
else
{
Operand ne = EmitVectorExtractZx(context, op.Rn, 0, 1);
Operand res = context.Call(typeof(SoftFloat16_32).GetMethod(nameof(SoftFloat16_32.FPConvert)), ne);
context.Copy(GetVec(op.Rd), context.VectorInsert(context.VectorZero(), res, 0));
}
}
else if (op.Size == 1 && op.Opc == 3) // Double -> Half.
{
@ -129,18 +156,20 @@ namespace ARMeilleure.Instructions
if (Optimizations.UseSse2 && sizeF == 1)
{
Operand n = GetVec(op.Rn);
Operand res;
if (op.RegisterSize == RegisterSize.Simd128)
{
res = context.AddIntrinsic(Intrinsic.X86Movhlps, n, n);
}
else
{
res = n;
}
Operand res = op.RegisterSize == RegisterSize.Simd128 ? context.AddIntrinsic(Intrinsic.X86Movhlps, n, n) : n;
res = context.AddIntrinsic(Intrinsic.X86Cvtps2pd, res);
res = context.AddIntrinsic(Intrinsic.X86Cvtps2pd, res);
context.Copy(GetVec(op.Rd), res);
}
else if (Optimizations.UseF16c && sizeF == 0)
{
Debug.Assert(!Optimizations.ForceLegacySse);
Operand n = GetVec(op.Rn);
Operand res = op.RegisterSize == RegisterSize.Simd128 ? context.AddIntrinsic(Intrinsic.X86Movhlps, n, n) : n;
res = context.AddIntrinsic(Intrinsic.X86Vcvtph2ps, res);
context.Copy(GetVec(op.Rd), res);
}
@ -210,17 +239,30 @@ namespace ARMeilleure.Instructions
{
Operand d = GetVec(op.Rd);
Operand res = context.VectorZeroUpper64(d);
Intrinsic movInst = op.RegisterSize == RegisterSize.Simd128 ? Intrinsic.X86Movlhps : Intrinsic.X86Movhlps;
Operand nInt = context.AddIntrinsic(Intrinsic.X86Cvtpd2ps, GetVec(op.Rn));
nInt = context.AddIntrinsic(Intrinsic.X86Movlhps, nInt, nInt);
nInt = context.AddIntrinsic(Intrinsic.X86Movlhps, nInt, nInt);
Operand res = context.VectorZeroUpper64(d);
res = context.AddIntrinsic(movInst, res, nInt);
Intrinsic movInst = op.RegisterSize == RegisterSize.Simd128
? Intrinsic.X86Movlhps
: Intrinsic.X86Movhlps;
context.Copy(d, res);
}
else if (Optimizations.UseF16c && sizeF == 0)
{
Debug.Assert(!Optimizations.ForceLegacySse);
res = context.AddIntrinsic(movInst, res, nInt);
Operand d = GetVec(op.Rd);
Operand n = GetVec(op.Rn);
Intrinsic movInst = op.RegisterSize == RegisterSize.Simd128 ? Intrinsic.X86Movlhps : Intrinsic.X86Movhlps;
Operand nInt = context.AddIntrinsic(Intrinsic.X86Vcvtps2ph, n, Const(X86GetRoundControl(FPRoundingMode.ToNearest)));
nInt = context.AddIntrinsic(Intrinsic.X86Movlhps, nInt, nInt);
Operand res = context.VectorZeroUpper64(d);
res = context.AddIntrinsic(movInst, res, nInt);
context.Copy(d, res);
}