src/Air.zig | 4 ++ src/Liveness.zig | 1 + src/Sema.zig | 93 ++++++++++++++++++++++++++++++-- src/arch/aarch64/CodeGen.zig | 7 +++ src/arch/arm/CodeGen.zig | 7 +++ src/arch/riscv64/CodeGen.zig | 7 +++ src/arch/x86_64/CodeGen.zig | 10 ++++ src/codegen/c.zig | 32 ++++++++++- src/codegen/llvm.zig | 40 +++++++++++++- src/codegen/wasm.zig | 8 +++ src/print_air.zig | 1 + test/behavior/optional.zig | 30 +++++++++++ test/behavior/optional_stage1.zig | 30 ----------- 13 files changed, 231 insertions(+), 39 deletions(-)