Initial work

1 files changed, 0 insertions, 149 deletions

diff --git a/Ryujinx.Graphics/Shader/StructuredIr/AstOptimizer.cs b/Ryujinx.Graphics/Shader/StructuredIr/AstOptimizer.cs
deleted file mode 100644
index 0f5392b7..00000000
--- a/Ryujinx.Graphics/Shader/StructuredIr/AstOptimizer.cs
+++ /dev/null
@@ -1,149 +0,0 @@
-using Ryujinx.Graphics.Shader.IntermediateRepresentation;
-using System.Collections.Generic;
-using System.Linq;
-
-using static Ryujinx.Graphics.Shader.StructuredIr.AstHelper;
-
-namespace Ryujinx.Graphics.Shader.StructuredIr
-{
-    static class AstOptimizer
-    {
-        public static void Optimize(StructuredProgramInfo info)
-        {
-            AstBlock mainBlock = info.MainBlock;
-
-            AstBlockVisitor visitor = new AstBlockVisitor(mainBlock);
-
-            foreach (IAstNode node in visitor.Visit())
-            {
-                if (node is AstAssignment assignment && assignment.Destination is AstOperand propVar)
-                {
-                    bool isWorthPropagating = propVar.Uses.Count == 1 || IsWorthPropagating(assignment.Source);
-
-                    if (propVar.Defs.Count == 1 && isWorthPropagating)
-                    {
-                        PropagateExpression(propVar, assignment.Source);
-                    }
-
-                    if (propVar.Type == OperandType.LocalVariable && propVar.Uses.Count == 0)
-                    {
-                        visitor.Block.Remove(assignment);
-
-                        info.Locals.Remove(propVar);
-                    }
-                }
-            }
-
-            RemoveEmptyBlocks(mainBlock);
-        }
-
-        private static bool IsWorthPropagating(IAstNode source)
-        {
-            if (!(source is AstOperation srcOp))
-            {
-                return false;
-            }
-
-            if (!InstructionInfo.IsUnary(srcOp.Inst))
-            {
-                return false;
-            }
-
-            return srcOp.GetSource(0) is AstOperand || srcOp.Inst == Instruction.Copy;
-        }
-
-        private static void PropagateExpression(AstOperand propVar, IAstNode source)
-        {
-            IAstNode[] uses = propVar.Uses.ToArray();
-
-            foreach (IAstNode useNode in uses)
-            {
-                if (useNode is AstBlock useBlock)
-                {
-                    useBlock.Condition = source;
-                }
-                else if (useNode is AstOperation useOperation)
-                {
-                    for (int srcIndex = 0; srcIndex < useOperation.SourcesCount; srcIndex++)
-                    {
-                        if (useOperation.GetSource(srcIndex) == propVar)
-                        {
-                            useOperation.SetSource(srcIndex, source);
-                        }
-                    }
-                }
-                else if (useNode is AstAssignment useAssignment)
-                {
-                    useAssignment.Source = source;
-                }
-            }
-        }
-
-        private static void RemoveEmptyBlocks(AstBlock mainBlock)
-        {
-            Queue<AstBlock> pending = new Queue<AstBlock>();
-
-            pending.Enqueue(mainBlock);
-
-            while (pending.TryDequeue(out AstBlock block))
-            {
-                foreach (IAstNode node in block)
-                {
-                    if (node is AstBlock childBlock)
-                    {
-                        pending.Enqueue(childBlock);
-                    }
-                }
-
-                AstBlock parent = block.Parent;
-
-                if (parent == null)
-                {
-                    continue;
-                }
-
-                AstBlock nextBlock = Next(block) as AstBlock;
-
-                bool hasElse = nextBlock != null && nextBlock.Type == AstBlockType.Else;
-
-                bool isIf = block.Type == AstBlockType.If;
-
-                if (block.Count == 0)
-                {
-                    if (isIf)
-                    {
-                        if (hasElse)
-                        {
-                            nextBlock.TurnIntoIf(InverseCond(block.Condition));
-                        }
-
-                        parent.Remove(block);
-                    }
-                    else if (block.Type == AstBlockType.Else)
-                    {
-                        parent.Remove(block);
-                    }
-                }
-                else if (isIf && parent.Type == AstBlockType.Else && parent.Count == (hasElse ? 2 : 1))
-                {
-                    AstBlock parentOfParent = parent.Parent;
-
-                    parent.Remove(block);
-
-                    parentOfParent.AddAfter(parent, block);
-
-                    if (hasElse)
-                    {
-                        parent.Remove(nextBlock);
-
-                        parentOfParent.AddAfter(block, nextBlock);
-                    }
-
-                    parentOfParent.Remove(parent);
-
-                    block.TurnIntoElseIf();
-                }
-            }
-        }
-    }
-}
\ No newline at end of file