Refs: #750
Ex.
class Foo extends Bar { /* no construct() */ }Emits:
/* super */
emit_op(s, OP_scope_get_var);
emit_atom(s, JS_ATOM_this_active_func);
emit_u16(s, 0);
emit_op(s, OP_get_super);
emit_op(s, OP_scope_get_var);
emit_atom(s, JS_ATOM_new_target);
emit_u16(s, 0);
emit_op(s, OP_array_from);
emit_u16(s, 0);
emit_op(s, OP_push_i32);
emit_u32(s, 0);
/* arguments */
emit_op(s, OP_scope_get_var);
emit_atom(s, JS_ATOM_arguments);
emit_u16(s, 0);
emit_op(s, OP_append);
/* drop the index */
emit_op(s, OP_drop);
emit_op(s, OP_apply);
emit_u16(s, 1);
/* set the 'this' value */
emit_op(s, OP_dup);
emit_op(s, OP_scope_put_var_init);
emit_atom(s, JS_ATOM_this);
emit_u16(s, 0);
emit_class_field_init(s);https://github.com/quickjs-ng/quickjs/blob/4b9d0ebdba3ace6b7f6de21c3e3806ab4055bd7e/quickjs.c#L21898-L21938
Pretty bulky and inefficient (splatting arguments, doing js_function_apply, etc.) Probably better handled through a dedicated opcode.
Affects WBT benchmarks like babylon that create tons of such objects.
Refs: #750
Ex.
Emits:
https://github.com/quickjs-ng/quickjs/blob/4b9d0ebdba3ace6b7f6de21c3e3806ab4055bd7e/quickjs.c#L21898-L21938
Pretty bulky and inefficient (splatting
arguments, doing js_function_apply, etc.) Probably better handled through a dedicated opcode.Affects WBT benchmarks like babylon that create tons of such objects.