Add rlib size benchmarks (#9005)

cli/bench/main.rs

@@ -169,6 +169,28 @@ fn run_exec_time(deno_exe: &PathBuf, target_dir: &PathBuf) -> Result<Value> {
   Ok(Value::Object(results))
 }
 
+fn rlib_size(target_dir: &std::path::Path, prefix: &str) -> u64 {
+  let mut size = 0;
+  let mut seen = std::collections::HashSet::new();
+  for entry in std::fs::read_dir(target_dir.join("deps")).unwrap() {
+    let entry = entry.unwrap();
+    let os_str = entry.file_name();
+    let name = os_str.to_str().unwrap();
+    if name.starts_with(prefix) && name.ends_with(".rlib") {
+      let start = name.split('-').next().unwrap().to_string();
+      if seen.contains(&start) {
+        println!("skip {}", name);
+      } else {
+        seen.insert(start);
+        size += entry.metadata().unwrap().len();
+        println!("check size {} {}", name, size);
+      }
+    }
+  }
+  assert!(size > 0);
+  size
+}
+
 const BINARY_TARGET_FILES: &[&str] =
   &["CLI_SNAPSHOT.bin", "COMPILER_SNAPSHOT.bin"];
 fn get_binary_sizes(target_dir: &PathBuf) -> Result<Value> {
@@ -180,6 +202,18 @@ fn get_binary_sizes(target_dir: &PathBuf) -> Result<Value> {
     Value::Number(Number::from(test_util::deno_exe_path().metadata()?.len())),
   );
 
+  // add up size for everything in target/release/deps/libswc*
+  let swc_size = rlib_size(&target_dir, "libswc");
+  println!("swc {} bytes", swc_size);
+  sizes.insert("swc_rlib".to_string(), Value::Number(swc_size.into()));
+
+  let rusty_v8_size = rlib_size(&target_dir, "librusty_v8");
+  println!("rusty_v8 {} bytes", rusty_v8_size);
+  sizes.insert(
+    "rusty_v8_rlib".to_string(),
+    Value::Number(rusty_v8_size.into()),
+  );
+
   // Because cargo's OUT_DIR is not predictable, search the build tree for
   // snapshot related files.
   for file in walkdir::WalkDir::new(target_dir) {
@@ -386,6 +420,9 @@ fn main() -> Result<()> {
 
   let mut new_data: Map<String, Value> = Map::new();
 
+  new_data.insert("binary_size".to_string(), get_binary_sizes(&target_dir)?);
+  new_data.insert("bundle_size".to_string(), bundle_benchmark(&deno_exe)?);
+
   new_data.insert(
     "created_at".to_string(),
     Value::String(
@@ -416,9 +453,6 @@ fn main() -> Result<()> {
     run_exec_time(&deno_exe, &target_dir)?,
   );
 
-  new_data.insert("binary_size".to_string(), get_binary_sizes(&target_dir)?);
-  new_data.insert("bundle_size".to_string(), bundle_benchmark(&deno_exe)?);
-
   // Cannot run throughput benchmark on windows because they don't have nc or
   // pipe.
   if cfg!(not(target_os = "windows")) {