diff --git a/disasm/src/formatter.rs b/disasm/src/formatter.rs
index aeac339..14d3128 100644
--- a/disasm/src/formatter.rs
+++ b/disasm/src/formatter.rs
@@ -6,25 +6,24 @@ pub struct FormattedIns(pub Ins);
 
 impl Display for FormattedIns {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{}{} ", self.0.op.mnemonic(), self.0.modifiers())?;
-        let fields = self.0.fields();
+        let simple = self.0.clone().simplified();
+        write!(f, "{}{} ", simple.mnemonic, simple.modifiers)?;
         let mut writing_offset = false;
-        for (i, field) in fields.iter().enumerate() {
-            if let Some(argument) = field.argument() {
-                write!(f, "{}", argument)?;
+        for (i, arg) in simple.args.iter().enumerate() {
+            if i > 0 {
+                write!(f, ", ")?;
             }
-            if let offset(_) = field {
+            if let Argument::Offset(_) = arg {
                 write!(f, "(")?;
                 writing_offset = true;
                 continue;
+            } else {
+                write!(f, "{}", arg)?;
             }
             if writing_offset {
                 write!(f, ")")?;
                 writing_offset = false;
             }
-            if i != fields.len() - 1 {
-                write!(f, ", ")?;
-            }
         }
         Ok(())
     }
diff --git a/disasm/src/generated.rs b/disasm/src/generated.rs
index 69b18f0..1231b76 100644
--- a/disasm/src/generated.rs
+++ b/disasm/src/generated.rs
@@ -225,6 +225,7 @@ pub enum Opcode {
     Xori,
     Xoris,
 }
+#[allow(clippy::all)]
 impl Opcode {
     pub(crate) fn _mnemonic(self) -> &'static str {
         match self {
@@ -1165,6 +1166,7 @@ pub enum Field {
     ctr,
     lr,
 }
+#[allow(clippy::all)]
 impl Ins {
     pub(crate) fn _fields(&self) -> Vec<Field> {
         match self.op {
@@ -5272,11 +5274,6 @@ impl Ins {
             }
             _ => {}
         }
-        SimplifiedIns {
-            mnemonic: self.op.mnemonic(),
-            modifiers: self._modifiers(),
-            args: vec![],
-            ins: self,
-        }
+        SimplifiedIns::basic_form(self)
     }
 }
diff --git a/disasm/src/lib.rs b/disasm/src/lib.rs
index a35957e..791cdaa 100644
--- a/disasm/src/lib.rs
+++ b/disasm/src/lib.rs
@@ -345,3 +345,18 @@ impl Display for SimplifiedIns {
         Ok(())
     }
 }
+
+impl SimplifiedIns {
+    pub(crate) fn basic_form(ins: Ins) -> Self {
+        Self {
+            mnemonic: ins.op.mnemonic(),
+            modifiers: ins.modifiers(),
+            args: ins
+                .fields()
+                .iter()
+                .flat_map(|field| field.argument())
+                .collect(),
+            ins,
+        }
+    }
+}
diff --git a/genisa/src/main.rs b/genisa/src/main.rs
index cd71861..8d585a9 100644
--- a/genisa/src/main.rs
+++ b/genisa/src/main.rs
@@ -232,6 +232,7 @@ impl Isa {
                 Illegal = -1,
                 #enum_variants
             }
+            #[allow(clippy::all)]
             impl Opcode {
                 #mnemonic_fn
                 #detect_fn
@@ -328,7 +329,7 @@ impl Isa {
         for simple in &self.mnemonics {
             mnemonics_by_opcode
                 .entry(&simple.opcode)
-                .or_insert_with(|| Vec::new())
+                .or_insert_with(Vec::new)
                 .push(simple)
         }
         // Generate match arms for each opcode.
@@ -444,7 +445,7 @@ impl Isa {
                     for arg in &mnemonic.args {
                         let field = field_by_name
                             .get(arg)
-                            .expect(&format!("field not found: {}", arg));
+                            .unwrap_or_else(|| panic!("field not found: {}", arg));
                         let variant = Ident::new(field.arg.as_ref().unwrap(), Span::call_site());
                         let value = field.express_value_self();
                         args.push(quote!(Argument::#variant(#variant(#value as _)),));
@@ -476,6 +477,7 @@ impl Isa {
         let simplified_ins_match_arms = token_stream!(simplified_ins_match_arms);
         // Generate final fields function.
         let ins_impl = quote! {
+            #[allow(clippy::all)]
             impl Ins {
                 pub(crate) fn _fields(&self) -> Vec<Field> {
                     match self.op {
@@ -513,12 +515,7 @@ impl Isa {
                         #simplified_ins_match_arms
                         _ => {}
                     }
-                    SimplifiedIns {
-                        mnemonic: self.op.mnemonic(),
-                        modifiers: self._modifiers(),
-                        args: vec![],
-                        ins: self,
-                    }
+                    SimplifiedIns::basic_form(self)
                 }
             }
         };
@@ -528,7 +525,7 @@ impl Isa {
 
 /// Converts the given key into an identifier.
 fn to_rust_ident(key: &str) -> TokenTree {
-    TokenTree::Ident(Ident::new(&key.replace(".", "_"), Span::call_site()))
+    TokenTree::Ident(Ident::new(&key.replace('.', "_"), Span::call_site()))
 }
 
 /// Converts the given key into an enum variant key.