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use TypingEnv when no infcx is available

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the behavior of the type system not only depends on the current
assumptions, but also the currentnphase of the compiler. This is
mostly necessary as we need to decide whether and how to reveal
opaque types. We track this via the `TypingMode`.
This commit is contained in:
lcnr
2024-11-15 13:53:31 +01:00
parent bf6adec108
commit 9cba14b95b
240 changed files with 1739 additions and 1340 deletions
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9
compiler/rustc_symbol_mangling/src/v0.rs
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@@ -26,7 +26,7 @@ pub(super) fn mangle<'tcx>(
) -> String {
let def_id = instance.def_id();
// FIXME(eddyb) this should ideally not be needed.
let args = tcx.normalize_erasing_regions(ty::ParamEnv::reveal_all(), instance.args);
let args = tcx.normalize_erasing_regions(ty::TypingEnv::fully_monomorphized(), instance.args);
let prefix = "_R";
let mut cx: SymbolMangler<'_> = SymbolMangler {
@@ -237,15 +237,16 @@ impl<'tcx> Printer<'tcx> for SymbolMangler<'tcx> {
if !args.is_empty() {
param_env = EarlyBinder::bind(param_env).instantiate(self.tcx, args);
}
let typing_env = ty::TypingEnv { typing_mode: ty::TypingMode::PostAnalysis, param_env };
match &mut impl_trait_ref {
Some(impl_trait_ref) => {
assert_eq!(impl_trait_ref.self_ty(), self_ty);
*impl_trait_ref = self.tcx.normalize_erasing_regions(param_env, *impl_trait_ref);
*impl_trait_ref = self.tcx.normalize_erasing_regions(typing_env, *impl_trait_ref);
self_ty = impl_trait_ref.self_ty();
}
None => {
self_ty = self.tcx.normalize_erasing_regions(param_env, self_ty);
self_ty = self.tcx.normalize_erasing_regions(typing_env, self_ty);
}
}
@@ -591,7 +592,7 @@ impl<'tcx> Printer<'tcx> for SymbolMangler<'tcx> {
ct_ty.print(self)?;
let mut bits = ct
.try_to_bits(self.tcx, ty::ParamEnv::reveal_all())
.try_to_bits(self.tcx, ty::TypingEnv::fully_monomorphized())
.expect("expected const to be monomorphic");
// Negative integer values are mangled using `n` as a "sign prefix".