src/all_types.hpp              | 10 +++++
 src/codegen.cpp                |  2 +
 src/ir.cpp                     | 75 ++++++++++++++++++++++++++++++++
 src/ir_print.cpp               | 13 ++++++
 test/stage1/behavior/union.zig | 37 +++++++++++++++-
 5 files changed, 136 insertions(+), 1 deletion(-)