1 files changed, 42 insertions, 10 deletions
diff --git a/ARMeilleure/Instructions/InstEmitSimdArithmetic.cs b/ARMeilleure/Instructions/InstEmitSimdArithmetic.cs
index a35e28a1..b91c522e 100644
--- a/ARMeilleure/Instructions/InstEmitSimdArithmetic.cs
+++ b/ARMeilleure/Instructions/InstEmitSimdArithmetic.cs
@@ -1617,18 +1617,32 @@ namespace ARMeilleure.Instructions
 
         public static void Frinta_S(ArmEmitterContext context)
         {
-            EmitScalarUnaryOpF(context, (op1) =>
+            if (Optimizations.UseSse41)
             {
-                return EmitRoundMathCall(context, MidpointRounding.AwayFromZero, op1);
-            });
+                EmitSse41ScalarRoundOpF(context, FPRoundingMode.ToNearestAway);
+            }
+            else
+            {
+                EmitScalarUnaryOpF(context, (op1) =>
+                {
+                    return EmitRoundMathCall(context, MidpointRounding.AwayFromZero, op1);
+                });
+            }
         }
 
         public static void Frinta_V(ArmEmitterContext context)
         {
-            EmitVectorUnaryOpF(context, (op1) =>
+            if (Optimizations.UseSse41)
             {
-                return EmitRoundMathCall(context, MidpointRounding.AwayFromZero, op1);
-            });
+                EmitSse41VectorRoundOpF(context, FPRoundingMode.ToNearestAway);
+            }
+            else
+            {
+                EmitVectorUnaryOpF(context, (op1) =>
+                {
+                    return EmitRoundMathCall(context, MidpointRounding.AwayFromZero, op1);
+                });
+            }
         }
 
         public static void Frinti_S(ArmEmitterContext context)
@@ -3516,9 +3530,18 @@ namespace ARMeilleure.Instructions
 
             Operand n = GetVec(op.Rn);
 
-            Intrinsic inst = (op.Size & 1) != 0 ? Intrinsic.X86Roundsd : Intrinsic.X86Roundss;
+            Operand res;
 
-            Operand res = context.AddIntrinsic(inst, n, Const(X86GetRoundControl(roundMode)));
+            if (roundMode != FPRoundingMode.ToNearestAway)
+            {
+                Intrinsic inst = (op.Size & 1) != 0 ? Intrinsic.X86Roundsd : Intrinsic.X86Roundss;
+
+                res = context.AddIntrinsic(inst, n, Const(X86GetRoundControl(roundMode)));
+            }
+            else
+            {
+                res = EmitSse41RoundToNearestWithTiesToAwayOpF(context, n, scalar: true);
+            }
 
             if ((op.Size & 1) != 0)
             {
@@ -3538,9 +3561,18 @@ namespace ARMeilleure.Instructions
 
             Operand n = GetVec(op.Rn);
 
-            Intrinsic inst = (op.Size & 1) != 0 ? Intrinsic.X86Roundpd : Intrinsic.X86Roundps;
+            Operand res;
+
+            if (roundMode != FPRoundingMode.ToNearestAway)
+            {
+                Intrinsic inst = (op.Size & 1) != 0 ? Intrinsic.X86Roundpd : Intrinsic.X86Roundps;
 
-            Operand res = context.AddIntrinsic(inst, n, Const(X86GetRoundControl(roundMode)));
+                res = context.AddIntrinsic(inst, n, Const(X86GetRoundControl(roundMode)));
+            }
+            else
+            {
+                res = EmitSse41RoundToNearestWithTiesToAwayOpF(context, n, scalar: false);
+            }
 
             if (op.RegisterSize == RegisterSize.Simd64)
             {