From 93e4f278a1b68c83944842175ab78b61fe5fb7ca Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Thu, 16 Feb 2023 13:34:32 +0800
Subject: [PATCH] add deprecated warnings for `{.deadcodeelim: on.}` (#21277)

---
 compiler/pragmas.nim | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler/pragmas.nim b/compiler/pragmas.nim
index 92e3d19220..6d953dee7b 100644
--- a/compiler/pragmas.nim
+++ b/compiler/pragmas.nim
@@ -929,7 +929,8 @@ proc singlePragma(c: PContext, sym: PSym, n: PNode, i: var int,
       of wThreadVar:
         noVal(c, it)
         incl(sym.flags, {sfThread, sfGlobal})
-      of wDeadCodeElimUnused: discard  # deprecated, dead code elim always on
+      of wDeadCodeElimUnused:
+        warningDeprecated(c.config, n.info, "'{.deadcodeelim: on.}' is deprecated, now a noop")  # deprecated, dead code elim always on
       of wNoForward: pragmaNoForward(c, it)
       of wReorder: pragmaNoForward(c, it, flag = sfReorder)
       of wMagic: processMagic(c, it, sym)