From e60a7d01a45353fe263b3b5fc55e8904fdb00d69 Mon Sep 17 00:00:00 2001
From: "J. Gareth \"Curious Kit\" Moreton" <gareth@moreton-family.com>
Date: Sat, 4 May 2024 01:27:46 +0100
Subject: [PATCH]   * Inc/Dec nodes converted to Add/Sub now remove     the
 "nf_modify" flag from the destination so     constant propagation works more
 efficiently.

---
 compiler/ninl.pas | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/compiler/ninl.pas b/compiler/ninl.pas
index aae0afb7b8..3981cf8bfc 100644
--- a/compiler/ninl.pas
+++ b/compiler/ninl.pas
@@ -4947,6 +4947,8 @@ implementation
            end;
 
          resultnode := hp.getcopy;
+         { Remove "modify" flag from what will be an assignment destination }
+         Exclude(resultnode.flags, nf_modify);
 
          { avoid type errors from the addn/subn }
          if not is_integer(resultnode.resultdef) then
@@ -4955,7 +4957,7 @@ implementation
              inserttypeconv_internal(hpp,sinttype);
            end;
 
-         { addition/substraction depending on inc/dec }
+         { addition/subtraction depending on inc/dec }
          if inlinenumber = in_inc_x then
            hpp := caddnode.create_internal(addn,hp,hpp)
          else