From 3ac20fd9e48437bf2a051f0992ddd9117c826b3e Mon Sep 17 00:00:00 2001
From: fleroviux <fleroviux@gmail.com>
Date: Fri, 26 Apr 2024 20:35:17 +0200
Subject: [PATCH] Backend\X64: fix broken SUB #1 optimization

---
 src/backend/x86_64/compile_alu.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/backend/x86_64/compile_alu.cpp b/src/backend/x86_64/compile_alu.cpp
index d57bd44..5b42523 100644
--- a/src/backend/x86_64/compile_alu.cpp
+++ b/src/backend/x86_64/compile_alu.cpp
@@ -188,7 +188,7 @@ void X64Backend::CompileSUB(CompileContext const& context, IRSub* op) {
       if (result_reg != lhs_reg) {
         code.mov(result_reg, lhs_reg);
       }
-      if(imm == 1u && update_host_flags) {
+      if(imm == 1u && !update_host_flags) {
         code.dec(result_reg);
       } else {
         code.sub(result_reg, imm);