stage2: implement generic function memoization

Module has a new field `monomorphed_funcs` which stores the set of
`*Module.Fn` objects which are generic function instantiations.
The hash is based on hashes of comptime values of parameters known to be
comptime based on an explicit comptime keyword or must-be-comptime
type expressions that can be evaluated without performing monomorphization.
This allows function calls to be semantically analyzed cheaply for
generic functions which are already instantiated.

The table is updated with a single `getOrPutAdapted` in the semantic
analysis of `call` instructions, by pre-allocating the `Fn` object and
passing it to the child `Sema`.

0 files changed, 0 insertions, 0 deletions