nir/range-analysis: Add a lot more assertions about the contents of tables

v2: Update several of the comments.  Drop some redundant uses of
ASSERT_UNION_OF_OTHERS_MATCHES_UNKNOWN_*_SOURCE source.  Suggested by
Caio.

Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Suggested-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
1 file changed