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Merge pull request #7063 from lioncash/fifr 

Interpreter: Unset FPSCR.FI and FPSCR.FR for QNaN and infinity input operands
This commit is contained in:
Léo Lam 2018-06-04 20:53:58 +02:00 committed by GitHub
parent 6ce9c96d91 9068109b3e
commit 5f29e891d3
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 42 additions and 42 deletions
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62
Source/Core/Core/PowerPC/Interpreter/Interpreter_FPUtils.h
View File

@ -103,10 +103,9 @@ inline double NI_mul(double a, double b)
if (std::isnan(t))
{
if (Common::IsSNAN(a) || Common::IsSNAN(b))
{
SetFPException(FPSCR_VXSNAN);
FPSCR.ClearFIFR();
}
FPSCR.ClearFIFR();
if (std::isnan(a))
return MakeQuiet(a);
@ -114,7 +113,6 @@ inline double NI_mul(double a, double b)
return MakeQuiet(b);
SetFPException(FPSCR_VXIMZ);
FPSCR.ClearFIFR();
return PPC_NAN;
}
return t;
@ -127,10 +125,9 @@ inline double NI_div(double a, double b)
if (std::isnan(t))
{
if (Common::IsSNAN(a) || Common::IsSNAN(b))
{
SetFPException(FPSCR_VXSNAN);
FPSCR.ClearFIFR();
}
FPSCR.ClearFIFR();
if (std::isnan(a))
return MakeQuiet(a);
@ -142,18 +139,15 @@ inline double NI_div(double a, double b)
if (a == 0.0)
{
SetFPException(FPSCR_VXZDZ);
FPSCR.ClearFIFR();
}
else
{
SetFPException(FPSCR_ZX);
FPSCR.ClearFIFR();
}
}
else if (std::isinf(a) && std::isinf(b))
{
SetFPException(FPSCR_VXIDI);
FPSCR.ClearFIFR();
}
return PPC_NAN;
@ -169,10 +163,9 @@ inline double NI_add(double a, double b)
if (std::isnan(t))
{
if (Common::IsSNAN(a) || Common::IsSNAN(b))
{
SetFPException(FPSCR_VXSNAN);
FPSCR.ClearFIFR();
}
FPSCR.ClearFIFR();
if (std::isnan(a))
return MakeQuiet(a);
@ -180,10 +173,12 @@ inline double NI_add(double a, double b)
return MakeQuiet(b);
SetFPException(FPSCR_VXISI);
FPSCR.ClearFIFR();
return PPC_NAN;
}
if (std::isinf(a) || std::isinf(b))
FPSCR.ClearFIFR();
return t;
}
@ -194,10 +189,9 @@ inline double NI_sub(double a, double b)
if (std::isnan(t))
{
if (Common::IsSNAN(a) || Common::IsSNAN(b))
{
SetFPException(FPSCR_VXSNAN);
FPSCR.ClearFIFR();
}
FPSCR.ClearFIFR();
if (std::isnan(a))
return MakeQuiet(a);
@ -205,10 +199,12 @@ inline double NI_sub(double a, double b)
return MakeQuiet(b);
SetFPException(FPSCR_VXISI);
FPSCR.ClearFIFR();
return PPC_NAN;
}
if (std::isinf(a) || std::isinf(b))
FPSCR.ClearFIFR();
return t;
}
@ -222,10 +218,9 @@ inline double NI_madd(double a, double c, double b)
if (std::isnan(t))
{
if (Common::IsSNAN(a) || Common::IsSNAN(b) || Common::IsSNAN(c))
{
SetFPException(FPSCR_VXSNAN);
FPSCR.ClearFIFR();
}
FPSCR.ClearFIFR();
if (std::isnan(a))
return MakeQuiet(a);
@ -235,7 +230,6 @@ inline double NI_madd(double a, double c, double b)
return MakeQuiet(c);
SetFPException(FPSCR_VXIMZ);
FPSCR.ClearFIFR();
return PPC_NAN;
}
@ -244,19 +238,20 @@ inline double NI_madd(double a, double c, double b)
if (std::isnan(t))
{
if (Common::IsSNAN(b))
{
SetFPException(FPSCR_VXSNAN);
FPSCR.ClearFIFR();
}
FPSCR.ClearFIFR();
if (std::isnan(b))
return MakeQuiet(b);
SetFPException(FPSCR_VXISI);
FPSCR.ClearFIFR();
return PPC_NAN;
}
if (std::isinf(a) || std::isinf(b) || std::isinf(c))
FPSCR.ClearFIFR();
return t;
}
@ -267,10 +262,9 @@ inline double NI_msub(double a, double c, double b)
if (std::isnan(t))
{
if (Common::IsSNAN(a) || Common::IsSNAN(b) || Common::IsSNAN(c))
{
SetFPException(FPSCR_VXSNAN);
FPSCR.ClearFIFR();
}
FPSCR.ClearFIFR();
if (std::isnan(a))
return MakeQuiet(a);
@ -280,7 +274,6 @@ inline double NI_msub(double a, double c, double b)
return MakeQuiet(c);
SetFPException(FPSCR_VXIMZ);
FPSCR.ClearFIFR();
return PPC_NAN;
}
@ -289,19 +282,20 @@ inline double NI_msub(double a, double c, double b)
if (std::isnan(t))
{
if (Common::IsSNAN(b))
{
SetFPException(FPSCR_VXSNAN);
FPSCR.ClearFIFR();
}
FPSCR.ClearFIFR();
if (std::isnan(b))
return MakeQuiet(b);
SetFPException(FPSCR_VXISI);
FPSCR.ClearFIFR();
return PPC_NAN;
}
if (std::isinf(a) || std::isinf(b) || std::isinf(c))
FPSCR.ClearFIFR();
return t;
}

6
Source/Core/Core/PowerPC/Interpreter/Interpreter_FloatingPoint.cpp
View File

@ -409,6 +409,9 @@ void Interpreter::fresx(UGeckoInstruction inst)
}
else
{
if (std::isnan(b) || std::isinf(b))
FPSCR.ClearFIFR();
compute_result(b);
}
@ -452,6 +455,9 @@ void Interpreter::frsqrtex(UGeckoInstruction inst)
}
else
{
if (std::isnan(b) || std::isinf(b))
FPSCR.ClearFIFR();
compute_result(b);
}

16
Source/Core/Core/PowerPC/Interpreter/Interpreter_Paired.cpp
View File

@ -124,11 +124,11 @@ void Interpreter::ps_res(UGeckoInstruction inst)
FPSCR.ClearFIFR();
}
if (Common::IsSNAN(a) || Common::IsSNAN(b))
{
SetFPException(FPSCR_VXSNAN);
if (std::isnan(a) || std::isinf(a) || std::isnan(b) || std::isinf(b))
FPSCR.ClearFIFR();
}
if (Common::IsSNAN(a) || Common::IsSNAN(b))
SetFPException(FPSCR_VXSNAN);
rPS0(inst.FD) = Common::ApproximateReciprocal(a);
rPS1(inst.FD) = Common::ApproximateReciprocal(b);
@ -155,11 +155,11 @@ void Interpreter::ps_rsqrte(UGeckoInstruction inst)
FPSCR.ClearFIFR();
}
if (Common::IsSNAN(ps0) || Common::IsSNAN(ps1))
{
SetFPException(FPSCR_VXSNAN);
if (std::isnan(ps0) || std::isinf(ps0) || std::isnan(ps1) || std::isinf(ps1))
FPSCR.ClearFIFR();
}
if (Common::IsSNAN(ps0) || Common::IsSNAN(ps1))
SetFPException(FPSCR_VXSNAN);
rPS0(inst.FD) = ForceSingle(Common::ApproximateReciprocalSquareRoot(ps0));
rPS1(inst.FD) = ForceSingle(Common::ApproximateReciprocalSquareRoot(ps1));