diff --git a/src/nouveau/compiler/nak/legalize.rs b/src/nouveau/compiler/nak/legalize.rs
index 585d32d4073..7c020598b01 100644
--- a/src/nouveau/compiler/nak/legalize.rs
+++ b/src/nouveau/compiler/nak/legalize.rs
@@ -292,6 +292,34 @@ pub trait LegalizeBuildHelpers: SSABuilder {
         *src = val.into();
     }
 
+    fn copy_alu_src_if_fabs(&mut self, src: &mut Src, src_type: SrcType) {
+        if src.src_mod.has_fabs() {
+            self.copy_alu_src_and_lower_fmod(src, src_type);
+        }
+    }
+
+    fn copy_alu_src_if_i20_overflow(
+        &mut self,
+        src: &mut Src,
+        reg_file: RegFile,
+        src_type: SrcType,
+    ) {
+        if src.as_imm_not_i20().is_some() {
+            self.copy_alu_src(src, reg_file, src_type);
+        }
+    }
+
+    fn copy_alu_src_if_f20_overflow(
+        &mut self,
+        src: &mut Src,
+        reg_file: RegFile,
+        src_type: SrcType,
+    ) {
+        if src.as_imm_not_f20().is_some() {
+            self.copy_alu_src(src, reg_file, src_type);
+        }
+    }
+
     fn copy_ssa_ref_if_uniform(&mut self, ssa_ref: &mut SSARef) {
         for ssa in &mut ssa_ref[..] {
             if ssa.is_uniform() {
diff --git a/src/nouveau/compiler/nak/sm50.rs b/src/nouveau/compiler/nak/sm50.rs
index 16213009696..4d3a3b47085 100644
--- a/src/nouveau/compiler/nak/sm50.rs
+++ b/src/nouveau/compiler/nak/sm50.rs
@@ -423,38 +423,6 @@ impl SM50Encoder<'_> {
 // Legalization helpers
 //
 
-pub trait SM50LegalizeBuildHelpers: LegalizeBuildHelpers {
-    fn copy_alu_src_if_fabs(&mut self, src: &mut Src, src_type: SrcType) {
-        if src.src_mod.has_fabs() {
-            self.copy_alu_src_and_lower_fmod(src, src_type);
-        }
-    }
-
-    fn copy_alu_src_if_i20_overflow(
-        &mut self,
-        src: &mut Src,
-        reg_file: RegFile,
-        src_type: SrcType,
-    ) {
-        if src.as_imm_not_i20().is_some() {
-            self.copy_alu_src(src, reg_file, src_type);
-        }
-    }
-
-    fn copy_alu_src_if_f20_overflow(
-        &mut self,
-        src: &mut Src,
-        reg_file: RegFile,
-        src_type: SrcType,
-    ) {
-        if src.as_imm_not_f20().is_some() {
-            self.copy_alu_src(src, reg_file, src_type);
-        }
-    }
-}
-
-impl SM50LegalizeBuildHelpers for LegalizeBuilder<'_> {}
-
 /// Helper to legalize extended or external instructions
 ///
 /// These are instructions which reach out external units such as load/store