Rollup merge of #125849 - GuillaumeGomez:migrate-emit-named-files, r=jieyouxu

Migrate `run-make/emit-named-files` to `rmake.rs`

Part of #121876.

r? `@jieyouxu`

Author: workingjubilee

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -37,7 +37,6 @@ run-make/dump-ice-to-disk/Makefile
 run-make/dump-mono-stats/Makefile
 run-make/duplicate-output-flavors/Makefile
 run-make/dylib-chain/Makefile
-run-make/emit-named-files/Makefile
 run-make/emit-path-unhashed/Makefile
 run-make/emit-shared-files/Makefile
 run-make/emit-stack-sizes/Makefile

tests/run-make/emit-named-files/Makefile

@@ -0,0 +1,25 @@
+use std::fs::create_dir;
+use std::path::Path;
+
+use run_make_support::{rustc, tmp_dir};
+
+fn emit_and_check(out_dir: &Path, out_file: &str, format: &str) {
+    let out_file = out_dir.join(out_file);
+    rustc().input("foo.rs").emit(&format!("{format}={}", out_file.display())).run();
+    assert!(out_file.is_file());
+}
+
+fn main() {
+    let out_dir = tmp_dir().join("emit");
+
+    create_dir(&out_dir).unwrap();
+
+    emit_and_check(&out_dir, "libfoo.s", "asm");
+    emit_and_check(&out_dir, "libfoo.bc", "llvm-bc");
+    emit_and_check(&out_dir, "libfoo.ll", "llvm-ir");
+    emit_and_check(&out_dir, "libfoo.o", "obj");
+    emit_and_check(&out_dir, "libfoo.rmeta", "metadata");
+    emit_and_check(&out_dir, "libfoo.rlib", "link");
+    emit_and_check(&out_dir, "libfoo.d", "dep-info");
+    emit_and_check(&out_dir, "libfoo.mir", "mir");
+}