From 1876b346fea647e8284a66bb6d62c38801035cff Mon Sep 17 00:00:00 2001
From: gdk <gab.dark.100@gmail.com>
Date: Sun, 13 Oct 2019 03:02:07 -0300
Subject: Initial work

---
 .../IntermediateRepresentation/BasicBlock.cs       | 61 ++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 Ryujinx.Graphics.Shader/IntermediateRepresentation/BasicBlock.cs

(limited to 'Ryujinx.Graphics.Shader/IntermediateRepresentation/BasicBlock.cs')

diff --git a/Ryujinx.Graphics.Shader/IntermediateRepresentation/BasicBlock.cs b/Ryujinx.Graphics.Shader/IntermediateRepresentation/BasicBlock.cs
new file mode 100644
index 00000000..94975337
--- /dev/null
+++ b/Ryujinx.Graphics.Shader/IntermediateRepresentation/BasicBlock.cs
@@ -0,0 +1,61 @@
+using System.Collections.Generic;
+
+namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
+{
+    class BasicBlock
+    {
+        public int Index { get; set; }
+
+        public LinkedList<INode> Operations { get; }
+
+        private BasicBlock _next;
+        private BasicBlock _branch;
+
+        public BasicBlock Next
+        {
+            get => _next;
+            set => _next = AddSuccessor(_next, value);
+        }
+
+        public BasicBlock Branch
+        {
+            get => _branch;
+            set => _branch = AddSuccessor(_branch, value);
+        }
+
+        public bool HasBranch => _branch != null;
+
+        public List<BasicBlock> Predecessors { get; }
+
+        public HashSet<BasicBlock> DominanceFrontiers { get; }
+
+        public BasicBlock ImmediateDominator { get; set; }
+
+        public BasicBlock()
+        {
+            Operations = new LinkedList<INode>();
+
+            Predecessors = new List<BasicBlock>();
+
+            DominanceFrontiers = new HashSet<BasicBlock>();
+        }
+
+        public BasicBlock(int index) : this()
+        {
+            Index = index;
+        }
+
+        private BasicBlock AddSuccessor(BasicBlock oldBlock, BasicBlock newBlock)
+        {
+            oldBlock?.Predecessors.Remove(this);
+            newBlock?.Predecessors.Add(this);
+
+            return newBlock;
+        }
+
+        public INode GetLastOp()
+        {
+            return Operations.Last?.Value;
+        }
+    }
+}
\ No newline at end of file
-- 
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