DebugInfo: Consider the type of NTTP when simplifying template names

Since the NTTP may need to be cast to the type when rebuilding the name,
check that the type can be rebuilt when determining whether a template
name can be simplified.

1 files changed, 5 insertions, 0 deletions

diff --git a/cross-project-tests/debuginfo-tests/clang_llvm_roundtrip/simplified_template_names.cpp b/cross-project-tests/debuginfo-tests/clang_llvm_roundtrip/simplified_template_names.cpp
index 9bc14f8ce657..b68d4e8c04b9 100644
--- a/cross-project-tests/debuginfo-tests/clang_llvm_roundtrip/simplified_template_names.cpp
+++ b/cross-project-tests/debuginfo-tests/clang_llvm_roundtrip/simplified_template_names.cpp
@@ -179,6 +179,10 @@ struct t12 {
   t11<LocalEnum, LocalEnum1> v1;
 };
 
+template<decltype(ns::AnonEnum1)>
+void f10() {
+}
+
 int main() {
   struct { } A;
   auto L = []{};
@@ -327,6 +331,7 @@ int main() {
   f1<decltype(fcc)>();
   int fnrt() __attribute__((noreturn));
   f1<decltype(fnrt)>();
+  f10<ns::AnonEnum1>();
 }
 void t8::mem() {
   struct t7 { };