diff --git a/bootstrap/repr/main.c b/bootstrap/repr/main.c
index 8736cd7..4b1041b 100644
--- a/bootstrap/repr/main.c
+++ b/bootstrap/repr/main.c
@@ -1,10 +1,10 @@
-#include <stdio.h>
 #include <stdint.h>
+#include <stdio.h>
 
 extern uint64_t add(uint64_t, uint64_t);
 
 int main() {
-  printf("Hello");
-  printf("Hello %lu", add(2, 7));
-  puts("Hello");
+  uint64_t val = add(2, 7);
+  printf("Hello %lu\n", val);
+  return val;
 }
diff --git a/bootstrap/repr/makefile b/bootstrap/repr/makefile
index 3ab941f..7e3d3d9 100644
--- a/bootstrap/repr/makefile
+++ b/bootstrap/repr/makefile
@@ -2,6 +2,7 @@ all: .ty/main.o .ty/integrationc.o .ty/integration.o .ty/repr-37b621cda8f778ea.r
 	cd .ty && objdump -D integrationc.o > integrationc.o.txt
 	cd .ty && objdump -D integration.o > integrationty.o.txt
 	cd .ty && objdump -D repr-37b621cda8f778ea.repr.c0ded12167d2f276-cgu.0.rcgu.o > integrationrs.o.txt
+	cc -o .ty/mainty .ty/integration.o .ty/main.o
 	touch .ty/all
 
 .ty/main.o: main.c
diff --git a/fir/src/lib.rs b/fir/src/lib.rs
index 8ff91f2..177b115 100644
--- a/fir/src/lib.rs
+++ b/fir/src/lib.rs
@@ -44,23 +44,29 @@ impl Fir {
         types: &Vec<TypeTree>,
         oir: &mut Oir,
     ) -> Function {
-        let sig = Signature::new(CallConv::Cold);
+        let sig = Signature::new(CallConv::Fast);
         let name = UserFuncName::user(namespace, index);
         // todo:: types need to be worked out, params and returns defined
         let mut func = Function::with_name_signature(name, sig);
         let mut builder = FunctionBuilder::new(&mut func, ctx);
         let root_block = builder.create_block();
-        // todo:: this is the issue with function arguments not working simple repr add case
-        func_def.args.iter().for_each(|x| {
+        let mut result_sets = vec![];
+        for x in func_def.args.iter() {
             let z = self
                 .recurse(*x, &mut builder, dtbl, scopes, types, oir)
                 .unwrap();
             builder.func.signature.params.push(AbiParam::new(I64));
-            //let res = builder.block_params(root_block)[z.as_u32() as usize];
-        });
-        builder.func.signature.returns.push(AbiParam::new(I64));
+            result_sets.push(z);
+        }
         builder.append_block_params_for_function_params(root_block);
         builder.switch_to_block(root_block);
+
+        for (i, x) in result_sets.iter().enumerate() {
+            let res = builder.block_params(root_block)[i];
+            builder.def_var(*x, res);
+        }
+        builder.func.signature.returns.push(AbiParam::new(I64));
+
         let _result = self.recurse(func_def.block, &mut builder, dtbl, scopes, types, oir);
         builder.seal_block(root_block);
         builder.finalize();
@@ -76,6 +82,7 @@ impl Fir {
         oir: &mut Oir,
     ) -> ResultFir<Variable> {
         let result = self.add_var();
+        builder.declare_var(result, I64);
         self.sym.table.insert(op.ident.clone(), result.as_u32());
         Ok(result)
     }