pub const Decl = struct
pub const Decl = struct { instructions: std.MultiArrayList(Inst), body: std.ArrayList(Ref), arena: std.heap.ArenaAllocator.State, pub fn deinit(decl: *Decl, gpa: Allocator) void { decl.instructions.deinit(gpa); decl.body.deinit(gpa); decl.arena.promote(gpa).deinit(); } }