rename needs_infer to has_infer

compiler/rustc_codegen_llvm/src/callee.rs

@@ -27,7 +27,7 @@ pub fn get_fn<'ll, 'tcx>(cx: &CodegenCx<'ll, 'tcx>, instance: Instance<'tcx>) ->
 
     debug!("get_fn(instance={:?})", instance);
 
-    assert!(!instance.substs.needs_infer());
+    assert!(!instance.substs.has_infer());
     assert!(!instance.substs.has_escaping_bound_vars());
 
     if let Some(&llfn) = cx.instances.borrow().get(&instance) {

compiler/rustc_codegen_llvm/src/mono_item.rs

@@ -48,7 +48,7 @@ impl<'tcx> PreDefineMethods<'tcx> for CodegenCx<'_, 'tcx> {
         visibility: Visibility,
         symbol_name: &str,
     ) {
-        assert!(!instance.substs.needs_infer());
+        assert!(!instance.substs.has_infer());
 
         let fn_abi = self.fn_abi_of_instance(instance, ty::List::empty());
         let lldecl = self.declare_fn(symbol_name, fn_abi);