refactor(tvix/eval): builtins now contain closures r/5040

For some upcoming builtins (notably, import) we need to capture
arguments in the builtin's implementation.

To allow this, we can no longer use function pointers for builtins,
but must use a reference-counted closure object instead.

Unfortunately this adds an extra pointer operation to every builtin
call. We should benchmark this later against having a split builtin
representation.

Change-Id: I109d98d0e25998870542f47573eb1ec2e546f2a2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6856
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>

0 files changed, 0 insertions, 0 deletions