(wip) Migrate branch-protection-check-IBT to rmake

Author: Rejyr

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -1,6 +1,5 @@
 run-make/archive-duplicate-names/Makefile
 run-make/atomic-lock-free/Makefile
-run-make/branch-protection-check-IBT/Makefile
 run-make/c-dynamic-dylib/Makefile
 run-make/c-dynamic-rlib/Makefile
 run-make/c-static-dylib/Makefile

tests/run-make/branch-protection-check-IBT/Makefile

@@ -0,0 +1,27 @@
+// Check for GNU Property Note
+
+// How to run this
+// python3 x.py test --target x86_64-unknown-linux-gnu  tests/run-make/branch-protection-check-IBT/
+
+//@ only-x86_64
+
+use run_make_support::llvm_readobj;
+use run_make_support::rustc;
+use run_make_support::{cwd, env_var, llvm_components_contain};
+
+fn main() {
+    if !llvm_components_contain("x86") {
+        return;
+    }
+
+    rustc()
+        .input("main.rs")
+        .target("x86_64-unknown-linux-gnu")
+        .arg("-Zcf-protection=branch")
+        .arg(format!("-L{}", cwd().display()))
+        .arg("-Clink-args=-nostartfiles")
+        .arg("-Csave-temps")
+        .run();
+
+    llvm_readobj().notes().input("main").run().assert_stdout_contains(".note.gnu.property");
+}