From 4d69286a9c5af031d4299357e720a967694f265e Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Sun, 11 Sep 2022 12:44:27 -0300
Subject: Implement VRINT (vector) Arm32 NEON instructions (#3691)

---
 ARMeilleure/Decoders/OpCodeTable.cs           |  6 ++-
 ARMeilleure/Instructions/InstEmitSimdCvt32.cs | 54 +++++++++++++++++++++++++++
 ARMeilleure/Instructions/InstName.cs          |  4 ++
 3 files changed, 63 insertions(+), 1 deletion(-)

(limited to 'ARMeilleure')

diff --git a/ARMeilleure/Decoders/OpCodeTable.cs b/ARMeilleure/Decoders/OpCodeTable.cs
index 09df31b0..c5f86712 100644
--- a/ARMeilleure/Decoders/OpCodeTable.cs
+++ b/ARMeilleure/Decoders/OpCodeTable.cs
@@ -791,7 +791,7 @@ namespace ARMeilleure.Decoders
             SetA32("<<<<01101110xxxxxxxxxx000111xxxx", InstName.Uxtb,    InstEmit32.Uxtb,    OpCode32AluUx.Create);
             SetA32("<<<<01101100xxxxxxxxxx000111xxxx", InstName.Uxtb16,  InstEmit32.Uxtb16,  OpCode32AluUx.Create);
             SetA32("<<<<01101111xxxxxxxxxx000111xxxx", InstName.Uxth,    InstEmit32.Uxth,    OpCode32AluUx.Create);
-            
+
             // VFP
             SetVfp("<<<<11101x110000xxxx101x11x0xxxx", InstName.Vabs,   InstEmit32.Vabs_S,   OpCode32SimdS.Create,           OpCode32SimdS.CreateT32);
             SetVfp("<<<<11100x11xxxxxxxx101xx0x0xxxx", InstName.Vadd,   InstEmit32.Vadd_S,   OpCode32SimdRegS.Create,        OpCode32SimdRegS.CreateT32);
@@ -959,6 +959,10 @@ namespace ARMeilleure.Decoders
             SetA32("111100100x00xxxxxxxx1111xxx1xxxx", InstName.Vrecps,      InstEmit32.Vrecps,      OpCode32SimdReg.Create);
             SetA32("111100111x11xx00xxxx000<<xx0xxxx", InstName.Vrev,        InstEmit32.Vrev,        OpCode32SimdRev.Create);
             SetA32("1111001x0x<<xxxxxxxx0001xxx0xxxx", InstName.Vrhadd,      InstEmit32.Vrhadd,      OpCode32SimdReg.Create);
+            SetA32("111100111x111010xxxx01010xx0xxxx", InstName.Vrinta,      InstEmit32.Vrinta_V,    OpCode32SimdCmpZ.Create);
+            SetA32("111100111x111010xxxx01101xx0xxxx", InstName.Vrintm,      InstEmit32.Vrintm_V,    OpCode32SimdCmpZ.Create);
+            SetA32("111100111x111010xxxx01000xx0xxxx", InstName.Vrintn,      InstEmit32.Vrintn_V,    OpCode32SimdCmpZ.Create);
+            SetA32("111100111x111010xxxx01111xx0xxxx", InstName.Vrintp,      InstEmit32.Vrintp_V,    OpCode32SimdCmpZ.Create);
             SetA32("1111001x1x>>>xxxxxxx0010>xx1xxxx", InstName.Vrshr,       InstEmit32.Vrshr,       OpCode32SimdShImm.Create);
             SetA32("111100101x>>>xxxxxxx100001x1xxx0", InstName.Vrshrn,      InstEmit32.Vrshrn,      OpCode32SimdShImmNarrow.Create);
             SetA32("111100111x111011xxxx010x1xx0xxxx", InstName.Vrsqrte,     InstEmit32.Vrsqrte,     OpCode32SimdSqrte.Create);
diff --git a/ARMeilleure/Instructions/InstEmitSimdCvt32.cs b/ARMeilleure/Instructions/InstEmitSimdCvt32.cs
index ec1ead48..b06ddd5e 100644
--- a/ARMeilleure/Instructions/InstEmitSimdCvt32.cs
+++ b/ARMeilleure/Instructions/InstEmitSimdCvt32.cs
@@ -323,6 +323,60 @@ namespace ARMeilleure.Instructions
             }
         }
 
+        // VRINTA (vector).
+        public static void Vrinta_V(ArmEmitterContext context)
+        {
+            EmitVectorUnaryOpF32(context, (m) => EmitRoundMathCall(context, MidpointRounding.AwayFromZero, m));
+        }
+
+        // VRINTM (vector).
+        public static void Vrintm_V(ArmEmitterContext context)
+        {
+            if (Optimizations.UseSse2)
+            {
+                EmitVectorUnaryOpSimd32(context, (m) =>
+                {
+                    return context.AddIntrinsic(Intrinsic.X86Roundps, m, Const(X86GetRoundControl(FPRoundingMode.TowardsMinusInfinity)));
+                });
+            }
+            else
+            {
+                EmitVectorUnaryOpF32(context, (m) => EmitUnaryMathCall(context, nameof(Math.Floor), m));
+            }
+        }
+
+        // VRINTN (vector).
+        public static void Vrintn_V(ArmEmitterContext context)
+        {
+            if (Optimizations.UseSse2)
+            {
+                EmitVectorUnaryOpSimd32(context, (m) =>
+                {
+                    return context.AddIntrinsic(Intrinsic.X86Roundps, m, Const(X86GetRoundControl(FPRoundingMode.ToNearest)));
+                });
+            }
+            else
+            {
+                EmitVectorUnaryOpF32(context, (m) => EmitRoundMathCall(context, MidpointRounding.ToEven, m));
+            }
+        }
+
+        // VRINTP (vector).
+        public static void Vrintp_V(ArmEmitterContext context)
+        {
+            if (Optimizations.UseSse2)
+            {
+                EmitVectorUnaryOpSimd32(context, (m) =>
+                {
+                    return context.AddIntrinsic(Intrinsic.X86Roundps, m, Const(X86GetRoundControl(FPRoundingMode.TowardsPlusInfinity)));
+                });
+            }
+            else
+            {
+                EmitVectorUnaryOpF32(context, (m) => EmitUnaryMathCall(context, nameof(Math.Ceiling), m));
+            }
+        }
+
         // VRINTZ (floating-point).
         public static void Vrint_Z(ArmEmitterContext context)
         {
diff --git a/ARMeilleure/Instructions/InstName.cs b/ARMeilleure/Instructions/InstName.cs
index f2c95ae9..f7022f8e 100644
--- a/ARMeilleure/Instructions/InstName.cs
+++ b/ARMeilleure/Instructions/InstName.cs
@@ -636,6 +636,10 @@ namespace ARMeilleure.Instructions
         Vrev,
         Vrhadd,
         Vrint,
+        Vrinta,
+        Vrintm,
+        Vrintn,
+        Vrintp,
         Vrintx,
         Vrshr,
         Vrshrn,
-- 
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