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Add support for guest Fz (Fpcr) mode through host Ftz and Daz (Mxcsr) modes (fast paths). (#1630)

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* Add support for guest Fz (Fpcr) mode through host Ftz and Daz (Mxcsr) modes (fast paths).

* Ptc.InternalVersion = 1630

* Nits.

* Address comments.

* Update Ptc.cs

* Address comment.
This commit is contained in:
LDj3SNuD 2020-12-07 10:37:07 +01:00 • committed by GitHub
parent 668720b088
commit 567ea726e1
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GPG key ID: 4AEE18F83AFDEB23
14 changed files with 221 additions and 27 deletions
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111
ARMeilleure/Instructions/InstEmitSimdArithmetic.cs
View file

@ -380,15 +380,21 @@ namespace ARMeilleure.Instructions
public static void Faddp_V(ArmEmitterContext context)
{
if (Optimizations.FastFP && Optimizations.UseSse2)
if (Optimizations.FastFP && Optimizations.UseSse41)
{
EmitSse2VectorPairwiseOpF(context, (op1, op2) =>
{
IOpCodeSimd op = (IOpCodeSimd)context.CurrOp;
return EmitSse41ProcessNaNsOpF(context, (op1, op2) =>
{
return EmitSseOrAvxHandleFzModeOpF(context, (op1, op2) =>
{
IOpCodeSimd op = (IOpCodeSimd)context.CurrOp;
Intrinsic addInst = (op.Size & 1) == 0 ? Intrinsic.X86Addps : Intrinsic.X86Addpd;
Intrinsic addInst = (op.Size & 1) == 0 ? Intrinsic.X86Addps : Intrinsic.X86Addpd;
return context.AddIntrinsic(addInst, op1, op2);
return context.AddIntrinsic(addInst, op1, op2);
}, scalar: false, op1, op2);
}, scalar: false, op1, op2);
});
}
else
@ -479,7 +485,10 @@ namespace ARMeilleure.Instructions
{
EmitSse41ProcessNaNsOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: true);
return EmitSseOrAvxHandleFzModeOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: true);
}, scalar: true, op1, op2);
}, scalar: true);
}
else
@ -497,7 +506,10 @@ namespace ARMeilleure.Instructions
{
EmitSse41ProcessNaNsOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: true);
return EmitSseOrAvxHandleFzModeOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: true);
}, scalar: false, op1, op2);
}, scalar: false);
}
else
@ -583,7 +595,10 @@ namespace ARMeilleure.Instructions
{
return EmitSse41ProcessNaNsOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: true);
return EmitSseOrAvxHandleFzModeOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: true);
}, scalar: false, op1, op2);
}, scalar: false, op1, op2);
});
}
@ -604,7 +619,10 @@ namespace ARMeilleure.Instructions
{
return EmitSse41ProcessNaNsOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: true);
return EmitSseOrAvxHandleFzModeOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: true);
}, scalar: false, op1, op2);
}, scalar: false, op1, op2);
});
}
@ -623,7 +641,10 @@ namespace ARMeilleure.Instructions
{
EmitSse41ProcessNaNsOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: false);
return EmitSseOrAvxHandleFzModeOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: false);
}, scalar: true, op1, op2);
}, scalar: true);
}
else
@ -641,7 +662,10 @@ namespace ARMeilleure.Instructions
{
EmitSse41ProcessNaNsOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: false);
return EmitSseOrAvxHandleFzModeOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: false);
}, scalar: false, op1, op2);
}, scalar: false);
}
else
@ -727,7 +751,10 @@ namespace ARMeilleure.Instructions
{
return EmitSse41ProcessNaNsOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: false);
return EmitSseOrAvxHandleFzModeOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: false);
}, scalar: false, op1, op2);
}, scalar: false, op1, op2);
});
}
@ -748,7 +775,10 @@ namespace ARMeilleure.Instructions
{
return EmitSse41ProcessNaNsOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: false);
return EmitSseOrAvxHandleFzModeOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: false);
}, scalar: false, op1, op2);
}, scalar: false, op1, op2);
});
}
@ -3360,6 +3390,53 @@ namespace ARMeilleure.Instructions
}
}
public static Operand EmitSseOrAvxHandleFzModeOpF(
ArmEmitterContext context,
Func2I emit,
bool scalar,
Operand n = null,
Operand m = null)
{
Operand nCopy = n ?? context.Copy(GetVec(((OpCodeSimdReg)context.CurrOp).Rn));
Operand mCopy = m ?? context.Copy(GetVec(((OpCodeSimdReg)context.CurrOp).Rm));
EmitSseOrAvxEnterFtzAndDazModesOpF(context, out Operand isTrue);
Operand res = emit(nCopy, mCopy);
EmitSseOrAvxExitFtzAndDazModesOpF(context, isTrue);
if (n != null || m != null)
{
return res;
}
int sizeF = ((IOpCodeSimd)context.CurrOp).Size & 1;
if (sizeF == 0)
{
if (scalar)
{
res = context.VectorZeroUpper96(res);
}
else if (((OpCodeSimdReg)context.CurrOp).RegisterSize == RegisterSize.Simd64)
{
res = context.VectorZeroUpper64(res);
}
}
else /* if (sizeF == 1) */
{
if (scalar)
{
res = context.VectorZeroUpper64(res);
}
}
context.Copy(GetVec(((OpCodeSimdReg)context.CurrOp).Rd), res);
return null;
}
private static Operand EmitSse2VectorMaxMinOpF(ArmEmitterContext context, Operand n, Operand m, bool isMax)
{
IOpCodeSimd op = (IOpCodeSimd)context.CurrOp;
@ -3419,7 +3496,10 @@ namespace ARMeilleure.Instructions
Operand res = EmitSse41ProcessNaNsOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: isMaxNum);
return EmitSseOrAvxHandleFzModeOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: isMaxNum);
}, scalar: scalar, op1, op2);
}, scalar: scalar, nCopy, mCopy);
if (n != null || m != null)
@ -3454,7 +3534,10 @@ namespace ARMeilleure.Instructions
Operand res = EmitSse41ProcessNaNsOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: isMaxNum);
return EmitSseOrAvxHandleFzModeOpF(context, (op1, op2) =>
{
return EmitSse2VectorMaxMinOpF(context, op1, op2, isMax: isMaxNum);
}, scalar: scalar, op1, op2);
}, scalar: scalar, nCopy, mCopy);
if (n != null || m != null)

33
ARMeilleure/Instructions/InstEmitSimdHelper.cs
View file

@ -1189,6 +1189,39 @@ namespace ARMeilleure.Instructions
}
}
[Flags]
public enum Mxcsr
{
Ftz = 1 << 15, // Flush To Zero.
Um = 1 << 11, // Underflow Mask.
Dm = 1 << 8, // Denormal Mask.
Daz = 1 << 6 // Denormals Are Zero.
}
public static void EmitSseOrAvxEnterFtzAndDazModesOpF(ArmEmitterContext context, out Operand isTrue)
{
isTrue = context.Call(typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetFpcrFz)));
Operand lblTrue = Label();
context.BranchIfFalse(lblTrue, isTrue);
context.AddIntrinsicNoRet(Intrinsic.X86Mxcsrmb, Const((int)(Mxcsr.Ftz | Mxcsr.Um | Mxcsr.Dm | Mxcsr.Daz)));
context.MarkLabel(lblTrue);
}
public static void EmitSseOrAvxExitFtzAndDazModesOpF(ArmEmitterContext context, Operand isTrue = null)
{
isTrue ??= context.Call(typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetFpcrFz)));
Operand lblTrue = Label();
context.BranchIfFalse(lblTrue, isTrue);
context.AddIntrinsicNoRet(Intrinsic.X86Mxcsrub, Const((int)(Mxcsr.Ftz | Mxcsr.Daz)));
context.MarkLabel(lblTrue);
}
public enum CmpCondition
{
// Legacy Sse.

11
ARMeilleure/Instructions/NativeInterface.cs
View file

@ -78,6 +78,11 @@ namespace ARMeilleure.Instructions
return (ulong)GetContext().Fpcr;
}
public static bool GetFpcrFz()
{
return (GetContext().Fpcr & FPCR.Fz) != 0;
}
public static ulong GetFpsr()
{
return (ulong)GetContext().Fpsr;
@ -85,7 +90,7 @@ namespace ARMeilleure.Instructions
public static uint GetFpscr()
{
var context = GetContext();
ExecutionContext context = GetContext();
return (uint)(context.Fpsr & FPSR.A32Mask & ~FPSR.Nzcv) |
(uint)(context.Fpcr & FPCR.A32Mask);
@ -143,7 +148,7 @@ namespace ARMeilleure.Instructions
public static void SetFpscr(uint fpscr)
{
var context = GetContext();
ExecutionContext context = GetContext();
context.Fpsr = FPSR.A32Mask & (FPSR)fpscr;
context.Fpcr = FPCR.A32Mask & (FPCR)fpscr;
@ -250,7 +255,7 @@ namespace ARMeilleure.Instructions
{
Statistics.PauseTimer();
var context = GetContext();
ExecutionContext context = GetContext();
context.CheckInterrupt();