Migrate run-make/llvm-ident to rmake.rs

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -85,7 +85,6 @@ run-make/link-cfg/Makefile
 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/long-linker-command-lines-cmd-exe/Makefile
 run-make/long-linker-command-lines/Makefile
 run-make/longjmp-across-rust/Makefile

tests/run-make/llvm-ident/rmake.rs

@@ -0,0 +1,41 @@
+//@ only-linux
+//@ ignore-cross-compile
+
+use run_make_support::llvm::llvm_bin_dir;
+use run_make_support::{cmd, env_var, llvm_filecheck, read_dir, rustc, source_root};
+
+use std::ffi::OsStr;
+
+fn main() {
+ // `-Ccodegen-units=16 -Copt-level=2` is used here to trigger thin LTO
+ // across codegen units to test deduplication of the named metadata
+ // (see `LLVMRustPrepareThinLTOImport` for details).
+ rustc()
+ .emit("link,obj")
+ .arg("-")
+ .arg("-Csave-temps")
+ .codegen_units(16)
+ .opt_level("2")
+ .target(&env_var("TARGET"))
+ .stdin("fn main(){}")
+ .run();
+
+ // `llvm-dis` is used here since `--emit=llvm-ir` does not emit LLVM IR
+ // for temporary outputs.
+ let mut files = Vec::new();
+ read_dir(".", |path| {
+ if path.is_file() && path.extension().is_some_and(|ext| ext == OsStr::new("bc")) {
+ files.push(path.to_path_buf());
+ }
+ });
+ cmd(llvm_bin_dir().join("llvm-dis")).args(&files).run();
+
+ // Check LLVM IR files (including temporary outputs) have `!llvm.ident`
+ // named metadata, reusing the related codegen test.
+ let llvm_ident_path = source_root().join("tests/codegen/llvm-ident.rs");
+ read_dir(".", |path| {
+ if path.is_file() && path.extension().is_some_and(|ext| ext == OsStr::new("ll")) {
+ llvm_filecheck().input_file(path).arg(&llvm_ident_path).run();
+ }
+ });
+}