Avoid cloning a jump argument vector to the heap.

2017-09-01 10:16:30 -07:00
parent 28779dc7e4
commit 9d2fbdae62
1 changed files with 1 additions and 1 deletions
--- a/lib/wasm/src/code_translator.rs
+++ b/lib/wasm/src/code_translator.rs
@@ -562,7 +562,7 @@ fn translate_operator(
                let default_ebb = control_stack[control_stack.len() - 1 - (default as usize)]
                    .br_destination();
                builder.ins().jump(default_ebb, jump_args.as_slice());
-                stack.extend(jump_args.clone());
+                stack.extend_from_slice(&jump_args);
                for (depth, dest_ebb) in dest_ebbs {
                    builder.switch_to_block(dest_ebb, &[]);
                    builder.seal_block(dest_ebb);