Rollup merge of #126880 - Rejyr:migrate-rmake-vw, r=Kobzol

Migrate `volatile-intrinsics`, `weird-output-filenames`, `wasm-override-linker`, `wasm-exceptions-nostd` to `rmake`

Also refactors `wasm-abi` and `compressed-debuginfo`.

Part of #121876.

r? ``@jieyouxu``

try-job: x86_64-gnu-debug
try-job: dist-various-2

Author: GuillaumeGomez

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -175,8 +175,4 @@ run-make/track-pgo-dep-info/Makefile
 run-make/translation/Makefile
 run-make/type-mismatch-same-crate-name/Makefile
 run-make/unstable-flag-required/Makefile
-run-make/volatile-intrinsics/Makefile
-run-make/wasm-exceptions-nostd/Makefile
-run-make/wasm-override-linker/Makefile
-run-make/weird-output-filenames/Makefile
 run-make/x86_64-fortanix-unknown-sgx-lvi/Makefile

tests/run-make/compressed-debuginfo/rmake.rs

@@ -5,7 +5,7 @@
 
 // FIXME: This test isn't comprehensive and isn't covering all possible combinations.
 
-use run_make_support::{assert_contains, cmd, run_in_tmpdir, rustc};
+use run_make_support::{assert_contains, cmd, llvm_readobj, run_in_tmpdir, rustc};
 
 fn check_compression(compression: &str, to_find: &str) {
     run_in_tmpdir(|| {
@@ -19,8 +19,7 @@ fn check_compression(compression: &str, to_find: &str) {
             .run();
         let stderr = out.stderr_utf8();
         if stderr.is_empty() {
-            // FIXME: `readelf` might need to be replaced with `llvm-readelf`.
-            cmd("readelf").arg("-t").arg("foo.o").run().assert_stdout_contains(to_find);
+            llvm_readobj().arg("-t").arg("foo.o").run().assert_stdout_contains(to_find);
         } else {
             assert_contains(
                 &stderr,

tests/run-make/volatile-intrinsics/Makefile

@@ -0,0 +1,18 @@
+//@ ignore-cross-compile
+
+use run_make_support::fs_wrapper::read;
+use run_make_support::{assert_contains, run, rustc};
+
+fn main() {
+    // The tests must pass...
+    rustc().input("main.rs").run();
+    run("main");
+
+    // ... and the loads/stores must not be optimized out.
+    rustc().input("main.rs").emit("llvm-ir").run();
+
+    let raw_llvm_ir = read("main.ll");
+    let llvm_ir = String::from_utf8_lossy(&raw_llvm_ir);
+    assert_contains(&llvm_ir, "load volatile");
+    assert_contains(&llvm_ir, "store volatile");
+}

tests/run-make/volatile-intrinsics/rmake.rs

@@ -1,9 +1,8 @@
 //@ only-wasm32-wasip1
 //@ needs-wasmtime
 
-use run_make_support::rustc;
+use run_make_support::{cmd, rustc};
 use std::path::Path;
-use std::process::Command;
 
 fn main() {
     rustc().input("foo.rs").target("wasm32-wasip1").run();
@@ -19,14 +18,12 @@ fn main() {
 }
 
 fn run(file: &Path, method: &str, expected_output: &str) {
-    let output = Command::new("wasmtime")
+    cmd("wasmtime")
         .arg("run")
         .arg("--preload=host=host.wat")
         .arg("--invoke")
         .arg(method)
         .arg(file)
-        .output()
-        .unwrap();
-    assert!(output.status.success());
-    assert_eq!(expected_output, String::from_utf8_lossy(&output.stdout));
+        .run()
+        .assert_stdout_equals(expected_output);
 }

tests/run-make/wasm-abi/rmake.rs

@@ -0,0 +1,18 @@
+//@ only-wasm32-bare
+
+use std::path::Path;
+
+use run_make_support::{cmd, env_var, rustc};
+
+fn main() {
+    // Add a few command line args to make exceptions work
+    rustc()
+        .input(Path::new("src").join("lib.rs"))
+        .target("wasm32-unknown-unknown")
+        .panic("unwind")
+        .arg("-Cllvm-args=-wasm-enable-eh")
+        .arg("-Ctarget-feature=+exception-handling")
+        .run();
+
+    cmd(&env_var("NODE")).arg("verify.mjs").arg("lib.wasm").run();
+}

tests/run-make/wasm-exceptions-nostd/Makefile

@@ -17,8 +17,8 @@ fn panic_handler(info: &core::panic::PanicInfo<'_>) -> ! {
     use alloc::boxed::Box;
     use alloc::string::ToString;
 
-    let msg = info.message().map(|msg| msg.to_string()).unwrap_or("(no message)".to_string());
-    let exception = Box::new(msg.to_string());
+    let msg = info.message().to_string();
+    let exception = Box::new(msg);
     unsafe {
         let exception_raw = Box::into_raw(exception);
         wasm_throw(exception_raw as *mut u8);

tests/run-make/wasm-exceptions-nostd/rmake.rs

@@ -0,0 +1,17 @@
+// How to run this
+// $ RUSTBUILD_FORCE_CLANG_BASED_TESTS=1 ./x.py test tests/run-make/wasm-override-linker/
+
+//@ needs-force-clang-based-tests
+
+use run_make_support::{env_var, rustc, target};
+
+fn main() {
+    if matches!(target().as_str(), "wasm32-unknown-unknown" | "wasm64-unknown-unknown") {
+        rustc()
+            .input("foo.rs")
+            .crate_type("cdylib")
+            .target(&target())
+            .linker(&env_var("CLANG"))
+            .run();
+    }
+}