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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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14 changed files with 221 additions and 27 deletions
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33
ARMeilleure/Instructions/InstEmitSimdHelper.cs
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@ -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.