From 2a31e68ece72eff7be5051506ab69c995d337ace Mon Sep 17 00:00:00 2001
From: Oli Scherer <github333195615777966@oli-obk.de>
Date: Thu, 20 Mar 2025 13:56:42 +0000
Subject: [PATCH] Guard a query invocation out of perf reasons

---
 compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
index 2eaaf127e41ea..3cb0ebe2caa55 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
@@ -1314,8 +1314,10 @@ fn build_generic_type_param_di_nodes<'ll, 'tcx>(
     ty: Ty<'tcx>,
 ) -> SmallVec<Option<&'ll DIType>> {
     if let ty::Adt(def, args) = *ty.kind() {
-        let generics = cx.tcx.generics_of(def.did());
-        return get_template_parameters(cx, generics, args);
+        if args.types().next().is_some() {
+            let generics = cx.tcx.generics_of(def.did());
+            return get_template_parameters(cx, generics, args);
+        }
     }
 
     return smallvec![];