Auto merge of #149450 - Zalathar:rollup-xxu162q, r=Zalathar

Rollup of 3 pull requests

Successful merges:

 - rust-lang/rust#144000 (Add `DefId::parent()` accessor for `rustc_public`)
 - rust-lang/rust#149409 (Test the coexistence of 'stack-protector' and 'safe-stack')
 - rust-lang/rust#149449 (Remove an unnecessary `unwrap` in `rustc_codegen_gcc`)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

src/builder.rs

@@ -503,9 +503,9 @@ fn set_rvalue_location<'a, 'gcc, 'tcx>(
     bx: &mut Builder<'a, 'gcc, 'tcx>,
     rvalue: RValue<'gcc>,
 ) -> RValue<'gcc> {
-    if bx.location.is_some() {
+    if let Some(location) = bx.location {
         #[cfg(feature = "master")]
-        rvalue.set_location(bx.location.unwrap());
+        rvalue.set_location(location);
     }
     rvalue
 }