src/Air.zig                    |  14 +-
 src/Liveness.zig               |   1 +
 src/Module.zig                 | 107 ++++++++++-
 src/Sema.zig                   | 320 ++++++++++++++++++++++++++------
 src/codegen.zig                |   9 +
 src/codegen/c.zig              |  16 ++
 src/codegen/llvm.zig           |  80 +++++++-
 src/print_air.zig              |   1 +
 src/type.zig                   | 170 +++++++++--------
 test/behavior/union.zig        |  12 ++
 test/behavior/union_stage1.zig |   7 -
 11 files changed, 576 insertions(+), 161 deletions(-)