Backend\X64: fix broken SUB #1 optimization

fleroviux · Apr 26, 2024 · 3ac20fd · 3ac20fd
1 parent e7e0460
commit 3ac20fd
Showing 1 changed file with 1 addition and 1 deletion.
diff --git 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);