Auto merge of #86674 - Aaron1011:new-querify-limits, r=michaelwoerister

Query-ify global limit attribute handling

Currently, we read various 'global limits' from inner attributes the crate root (`recursion_limit`, `move_size_limit`, `type_length_limit`, `const_eval_limit`). These limits are then stored in `Sessions`, allowing them to be access from a `TyCtxt` without registering a dependency on the crate root attributes.

This PR moves the calculation of these global limits behind queries, so that we properly track dependencies on crate root attributes. During the setup of macro expansion (before we've created a `TyCtxt`), we need to access the recursion limit, which is now done by directly calling into the code shared by the normal query implementations.
This commit is contained in:
bors
2021-07-05 16:30:53 +00:00
31 changed files with 173 additions and 91 deletions

View File

@@ -206,8 +206,9 @@ impl<'tcx> TyCtxt<'tcx> {
mut ty: Ty<'tcx>,
normalize: impl Fn(Ty<'tcx>) -> Ty<'tcx>,
) -> Ty<'tcx> {
let recursion_limit = self.recursion_limit();
for iteration in 0.. {
if !self.sess.recursion_limit().value_within_limit(iteration) {
if !recursion_limit.value_within_limit(iteration) {
return self.ty_error_with_message(
DUMMY_SP,
&format!("reached the recursion limit finding the struct tail for {}", ty),