From 7a29a782f84ebceec0fb5c3d39bb484621831fca Mon Sep 17 00:00:00 2001
From: Andreas Rumpf <rumpf_a@web.de>
Date: Sat, 9 Jul 2022 06:46:05 +0200
Subject: [PATCH] removed caching logic; saves 400MB for an ORC booting
 compiler (#19989)

---
 compiler/injectdestructors.nim | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/compiler/injectdestructors.nim b/compiler/injectdestructors.nim
index 6500c5bc77..867d30d96b 100644
--- a/compiler/injectdestructors.nim
+++ b/compiler/injectdestructors.nim
@@ -80,12 +80,6 @@ import sets, hashes
 
 proc hash(n: PNode): Hash = hash(cast[pointer](n))
 
-proc aliasesCached(cache: var Table[(PNode, PNode), AliasKind], obj, field: PNode): AliasKind =
-  let key = (obj, field)
-  if not cache.hasKey(key):
-    cache[key] = aliases(obj, field)
-  cache[key]
-
 type
   State = ref object
     lastReads: IntSet
@@ -116,9 +110,8 @@ proc mergeStates(a: var State, b: sink State) =
     a.alreadySeen.incl b.alreadySeen
 
 proc computeLastReadsAndFirstWrites(cfg: ControlFlowGraph) =
-  var cache = initTable[(PNode, PNode), AliasKind]()
   template aliasesCached(obj, field: PNode): AliasKind =
-    aliasesCached(cache, obj, field)
+    aliases(obj, field)
 
   var cfg = cfg
   preprocessCfg(cfg)