Fix a compilation error in debug mode

rust-lang · Oct 15, 2020 · 1c272b1 · 1c272b1
1 parent 7045b10
commit 1c272b1
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Showing 2 changed files with 5 additions and 2 deletions.
diff --git a/src/optimize/mod.rs b/src/optimize/mod.rs
@@ -19,7 +19,7 @@ pub(crate) fn optimize_function<'tcx>(
     if tcx.sess.opts.optimize == rustc_session::config::OptLevel::No {
         return; // FIXME classify optimizations over opt levels
     }
-    self::stack2reg::optimize_function(ctx);
+    self::stack2reg::optimize_function(ctx, clif_comments);
     crate::pretty_clif::write_clif_file(tcx, "stack2reg", None, instance, &ctx, &*clif_comments);
     crate::base::verify_func(tcx, &*clif_comments, &ctx.func);
 }
diff --git a/src/optimize/stack2reg.rs b/src/optimize/stack2reg.rs
@@ -182,7 +182,10 @@ impl<'a> OptimizeContext<'a> {
     }
 }
 
-pub(super) fn optimize_function(ctx: &mut Context) {
+pub(super) fn optimize_function(
+    ctx: &mut Context,
+    #[cfg_attr(not(debug_assertions), allow(unused_variables))] clif_comments: &mut crate::pretty_clif::CommentWriter,
+) {
     combine_stack_addr_with_load_store(&mut ctx.func);
 
     let mut opt_ctx = OptimizeContext::for_context(ctx);