migrate tests/run-make/llvm-outputs to use rmake.rs

part of #121876

src/tools/run-make-support/src/rustc.rs

@@ -107,6 +107,13 @@ impl Rustc {
         self
     }
 
+    /// Specify path to the output directory. Equivalent to `--out-dir`` in rustc.
+    pub fn out_dir<P: AsRef<Path>>(&mut self, path: P) -> &mut Self {
+        self.cmd.arg("--out-dir");
+        self.cmd.arg(path.as_ref());
+        self
+    }
+
     /// This flag defers LTO optimizations to the linker.
     pub fn linker_plugin_lto(&mut self, option: &str) -> &mut Self {
         self.cmd.arg(format!("-Clinker-plugin-lto={option}"));

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -122,7 +122,6 @@ run-make/link-framework/Makefile
 run-make/link-path-order/Makefile
 run-make/linkage-attr-on-static/Makefile
 run-make/llvm-ident/Makefile
-run-make/llvm-outputs/Makefile
 run-make/long-linker-command-lines-cmd-exe/Makefile
 run-make/long-linker-command-lines/Makefile
 run-make/longjmp-across-rust/Makefile