Print block param names in asm comment (Shopify/zjit#93)

Author: k0kubun

zjit/src/codegen.rs

@@ -136,7 +136,7 @@ fn gen_function(cb: &mut CodeBlock, iseq: IseqPtr, function: &Function) -> Optio
     let reverse_post_order = function.rpo();
     for &block_id in reverse_post_order.iter() {
         let block = function.block(block_id);
-        asm_comment!(asm, "Block: {block_id}");
+        asm_comment!(asm, "Block: {block_id}({})", block.params().map(|param| format!("{param}")).collect::<Vec<_>>().join(", "));
 
         // Write a label to jump to the basic block
         let label = jit.get_label(&mut asm, block_id);