From c200a7b7c668acc733a0c20df865662b86859746 Mon Sep 17 00:00:00 2001
From: riperiperi <rhy3756547@hotmail.com>
Date: Wed, 21 Dec 2022 01:28:18 +0000
Subject: [PATCH] ARMeilleure: Hash _data pointer instead of value for Operand
 (#4156)

I noticed a weirdly high cost for dictionary accesses from MarkLabel etc. Turns out that the hash code was always the same for labels, so the whole point of having a dictionary was missed and it was putting everything in the same bucket. I made it always hash the _data pointer as that's a good source of identifiable and "random" data.
---
 ARMeilleure/IntermediateRepresentation/Operand.cs | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/ARMeilleure/IntermediateRepresentation/Operand.cs b/ARMeilleure/IntermediateRepresentation/Operand.cs
index b3aafa7a..896d3420 100644
--- a/ARMeilleure/IntermediateRepresentation/Operand.cs
+++ b/ARMeilleure/IntermediateRepresentation/Operand.cs
@@ -378,14 +378,7 @@ namespace ARMeilleure.IntermediateRepresentation
 
         public override int GetHashCode()
         {
-            if (Kind == OperandKind.LocalVariable)
-            {
-                return base.GetHashCode();
-            }
-            else
-            {
-                return (int)Value ^ ((int)Kind << 16) ^ ((int)Type << 20);
-            }
+            return ((ulong)_data).GetHashCode();
         }
 
         public bool Equals(Operand operand)