lib/std/zig/Zir.zig                    |  32 +++
 src/Compilation.zig                    |  26 +-
 src/InternPool.zig                     |  75 +++++-
 src/Sema.zig                           | 425 ++++++++++++++++----------------
 src/Zcu.zig                            | 238 ++++++++++++++++--
 src/Zcu/PerThread.zig                  | 258 ++++++++++++++-----
 src/codegen/llvm.zig                   |  12 +-
 test/incremental/change_panic_handler  |  74 ++++++
 test/incremental/temporary_parse_error |  18 ++
 9 files changed, 839 insertions(+), 319 deletions(-)