From cee712105850ac3385cd0091a923438167433f9f Mon Sep 17 00:00:00 2001
From: TSR Berry <20988865+TSRBerry@users.noreply.github.com>
Date: Sat, 8 Apr 2023 01:22:00 +0200
Subject: Move solution and projects to src

---
 src/ARMeilleure/Translation/RegisterToLocal.cs | 52 ++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 src/ARMeilleure/Translation/RegisterToLocal.cs

(limited to 'src/ARMeilleure/Translation/RegisterToLocal.cs')

diff --git a/src/ARMeilleure/Translation/RegisterToLocal.cs b/src/ARMeilleure/Translation/RegisterToLocal.cs
new file mode 100644
index 00000000..abb9b373
--- /dev/null
+++ b/src/ARMeilleure/Translation/RegisterToLocal.cs
@@ -0,0 +1,52 @@
+using ARMeilleure.IntermediateRepresentation;
+using System.Collections.Generic;
+
+using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
+
+namespace ARMeilleure.Translation
+{
+    static class RegisterToLocal
+    {
+        public static void Rename(ControlFlowGraph cfg)
+        {
+            Dictionary<Register, Operand> registerToLocalMap = new Dictionary<Register, Operand>();
+
+            Operand GetLocal(Operand op)
+            {
+                Register register = op.GetRegister();
+
+                if (!registerToLocalMap.TryGetValue(register, out Operand local))
+                {
+                    local = Local(op.Type);
+
+                    registerToLocalMap.Add(register, local);
+                }
+
+                return local;
+            }
+
+            for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
+            {
+                for (Operation node = block.Operations.First; node != default; node = node.ListNext)
+                {
+                    Operand dest = node.Destination;
+
+                    if (dest != default && dest.Kind == OperandKind.Register)
+                    {
+                        node.Destination = GetLocal(dest);
+                    }
+
+                    for (int index = 0; index < node.SourcesCount; index++)
+                    {
+                        Operand source = node.GetSource(index);
+
+                        if (source.Kind == OperandKind.Register)
+                        {
+                            node.SetSource(index, GetLocal(source));
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
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