dbg

swc-project · Apr 4, 2023 · e3428b2 · e3428b2
1 parent 4e6a451
commit e3428b2
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Showing 3 changed files with 12 additions and 1 deletion.
diff --git a/crates/swc_ecma_minifier/src/compress/optimize/mod.rs b/crates/swc_ecma_minifier/src/compress/optimize/mod.rs
@@ -67,6 +67,7 @@ pub(super) fn optimizer<'a, M>(
 where
     M: Mode,
 {
+    dbg!(&*data);
     assert!(
         options.top_retain.iter().all(|s| s.trim() != ""),
         "top_retain should not contain empty string"

diff --git a/crates/swc_ecma_minifier/src/compress/optimize/sequences.rs b/crates/swc_ecma_minifier/src/compress/optimize/sequences.rs
@@ -2274,6 +2274,7 @@ where
                     Mergable::Var(a) => {
                         if self.options.unused {
                             if let Some(usage) = self.data.vars.get(&left_id.to_id()) {
+                                dbg!(usage);
                                 // We are eliminating one usage, so we use 1 instead of
                                 // 0
                                 if !$force_drop && usage.usage_count == 1 && usage.assign_count == 0

diff --git a/crates/swc_ecma_minifier/src/program_data.rs b/crates/swc_ecma_minifier/src/program_data.rs
@@ -21,6 +21,7 @@ use swc_ecma_usage_analyzer::{
     marks::Marks,
 };
 use swc_ecma_visit::VisitWith;
+use tracing::debug;
 
 pub(crate) fn analyze<N>(n: &N, _module_info: &ModuleInfo, marks: Option<Marks>) -> ProgramData
 where
@@ -593,14 +594,18 @@ impl ProgramData {
 
 impl ProgramData {
     fn report(&mut self, i: Id, ctx: Ctx, is_modify: bool, dejavu: &mut AHashSet<Id>) {
-        // trace!("report({}{:?})", i.0, i.1);
+        debug!("report({}{:?}, is_modify = {:?})", i.0, i.1, is_modify);
 
         let is_first = dejavu.is_empty();
 
         if !dejavu.insert(i.clone()) {
             return;
         }
 
+        dbg!("no dejavu");
+        dbg!(is_first);
+        dbg!(self.vars.get(&i));
+
         let inited = self.initialized_vars.contains(&i);
 
         let e = self.vars.entry(i.clone()).or_insert_with(|| {
@@ -614,6 +619,7 @@ impl ProgramData {
                 ..Default::default()
             }
         });
+        dbg!(&*e);
 
         e.inline_prevented |= ctx.inline_prevented;
 
@@ -634,6 +640,8 @@ impl ProgramData {
         e.executed_multiple_time |= ctx.executed_multiple_time;
         e.used_in_cond |= ctx.in_cond;
 
+        dbg!(is_modify, ctx.is_exact_reassignment);
+
         if is_modify && ctx.is_exact_reassignment {
             if is_first {
                 e.assign_count += 1;
@@ -664,6 +672,7 @@ impl ProgramData {
             }
 
             e.usage_count += 1;
+            dbg!(&e.usage_count);
         }
     }
 }