From 27ccb1a68ae4c4b674aab0300f88d98a9dcba7bc Mon Sep 17 00:00:00 2001
From: Antoine Viallon <antoine@lesviallon.fr>
Date: Fri, 5 Jan 2024 23:13:45 +0100
Subject: [PATCH] ir: IRValue: track readers

---
 compiler/ir.py | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/compiler/ir.py b/compiler/ir.py
index 360f2b8..84a5c5d 100644
--- a/compiler/ir.py
+++ b/compiler/ir.py
@@ -43,9 +43,25 @@ class IRNop(IRAction):
 
 
 class IRValue(IRItem, abc.ABC):
+    values: list[IRValue] = []
+
+    def __init__(self, location: SourceLocation):
+        super().__init__(location)
+        self.readers: list[IRAction] = []
+        IRValue.values += [self]
+
+    def __del__(self):
+        IRValue.values.remove(self)
+
     def destination(self) -> IRValue:
         return self
 
+    def __str__(self):
+        return self.codegen()
+
+    def __repr__(self) -> str:
+        return f"{self.codegen()} (readers: {repr(self.readers)})"
+
 
 class IRMove(IRAction):