From 02a6fdcd1369cea926a1ad549ef69dbff60f034a Mon Sep 17 00:00:00 2001
From: LDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com>
Date: Fri, 10 Aug 2018 19:27:15 +0200
Subject: Add Sqdmulh_S, Sqdmulh_V, Sqrdmulh_S, Sqrdmulh_V instructions; add 6
 Tests. Now all saturating methods are on ASoftFallback. (#334)

* Update Instructions.cs

* Update CpuTestSimd.cs

* Update CpuTestSimdReg.cs

* Update AOpCodeTable.cs

* Update AInstEmitSimdArithmetic.cs

* Update AInstEmitSimdHelper.cs

* Update ASoftFallback.cs

* Update CpuTestAlu.cs

* Update CpuTestAluImm.cs

* Update CpuTestAluRs.cs

* Update CpuTestAluRx.cs

* Update CpuTestBfm.cs

* Update CpuTestCcmpImm.cs

* Update CpuTestCcmpReg.cs

* Update CpuTestCsel.cs

* Update CpuTestMov.cs

* Update CpuTestMul.cs

* Update Ryujinx.Tests.csproj

* Update Ryujinx.csproj

* Update Luea.csproj

* Update Ryujinx.ShaderTools.csproj

* Address PR feedback (further tested).

* Address PR feedback.
---
 ChocolArm64/Instruction/AInstEmitSimdArithmetic.cs | 56 ++++++++++++++++++++++
 1 file changed, 56 insertions(+)

(limited to 'ChocolArm64/Instruction/AInstEmitSimdArithmetic.cs')

diff --git a/ChocolArm64/Instruction/AInstEmitSimdArithmetic.cs b/ChocolArm64/Instruction/AInstEmitSimdArithmetic.cs
index 559811d9..02e903f6 100644
--- a/ChocolArm64/Instruction/AInstEmitSimdArithmetic.cs
+++ b/ChocolArm64/Instruction/AInstEmitSimdArithmetic.cs
@@ -158,6 +158,42 @@ namespace ChocolArm64.Instruction
             Context.MarkLabel(LblTrue);
         }
 
+        private static void EmitDoublingMultiplyHighHalf(AILEmitterCtx Context, bool Round)
+        {
+            AOpCodeSimdReg Op = (AOpCodeSimdReg)Context.CurrOp;
+
+            int ESize = 8 << Op.Size;
+
+            Context.Emit(OpCodes.Mul);
+
+            if (!Round)
+            {
+                Context.EmitAsr(ESize - 1);
+            }
+            else
+            {
+                long RoundConst = 1L << (ESize - 1);
+
+                AILLabel LblTrue = new AILLabel();
+
+                Context.EmitLsl(1);
+
+                Context.EmitLdc_I8(RoundConst);
+
+                Context.Emit(OpCodes.Add);
+
+                Context.EmitAsr(ESize);
+
+                Context.Emit(OpCodes.Dup);
+                Context.EmitLdc_I8((long)int.MinValue);
+                Context.Emit(OpCodes.Bne_Un_S, LblTrue);
+
+                Context.Emit(OpCodes.Neg);
+
+                Context.MarkLabel(LblTrue);
+            }
+        }
+
         private static void EmitHighNarrow(AILEmitterCtx Context, Action Emit, bool Round)
         {
             AOpCodeSimdReg Op = (AOpCodeSimdReg)Context.CurrOp;
@@ -1040,6 +1076,16 @@ namespace ChocolArm64.Instruction
             EmitVectorSaturatingBinaryOpSx(Context, SaturatingFlags.Add);
         }
 
+        public static void Sqdmulh_S(AILEmitterCtx Context)
+        {
+            EmitSaturatingBinaryOp(Context, () => EmitDoublingMultiplyHighHalf(Context, Round: false), SaturatingFlags.ScalarSx);
+        }
+
+        public static void Sqdmulh_V(AILEmitterCtx Context)
+        {
+            EmitSaturatingBinaryOp(Context, () => EmitDoublingMultiplyHighHalf(Context, Round: false), SaturatingFlags.VectorSx);
+        }
+
         public static void Sqneg_S(AILEmitterCtx Context)
         {
             EmitScalarSaturatingUnaryOpSx(Context, () => Context.Emit(OpCodes.Neg));
@@ -1050,6 +1096,16 @@ namespace ChocolArm64.Instruction
             EmitVectorSaturatingUnaryOpSx(Context, () => Context.Emit(OpCodes.Neg));
         }
 
+        public static void Sqrdmulh_S(AILEmitterCtx Context)
+        {
+            EmitSaturatingBinaryOp(Context, () => EmitDoublingMultiplyHighHalf(Context, Round: true), SaturatingFlags.ScalarSx);
+        }
+
+        public static void Sqrdmulh_V(AILEmitterCtx Context)
+        {
+            EmitSaturatingBinaryOp(Context, () => EmitDoublingMultiplyHighHalf(Context, Round: true), SaturatingFlags.VectorSx);
+        }
+
         public static void Sqsub_S(AILEmitterCtx Context)
         {
             EmitScalarSaturatingBinaryOpSx(Context, SaturatingFlags.Sub);
-- 
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