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Remove unnecessary DefineOpaqueTypes::Bubble from codegen

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This commit is contained in:
Michael Goulet 2023-06-23 21:50:44 +00:00
parent 983f6b9787
commit 75a8f68183
1 changed files with 2 additions and 13 deletions
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15
compiler/rustc_traits/src/codegen.rs
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@ -5,7 +5,7 @@
use rustc_infer::infer::TyCtxtInferExt;
use rustc_infer::traits::{FulfillmentErrorCode, TraitEngineExt as _};
use rustc_middle::traits::{CodegenObligationError, DefiningAnchor};
use rustc_middle::traits::CodegenObligationError;
use rustc_middle::ty::{self, TyCtxt};
use rustc_trait_selection::traits::error_reporting::TypeErrCtxtExt;
use rustc_trait_selection::traits::{
@ -29,13 +29,7 @@ pub fn codegen_select_candidate<'tcx>(
// Do the initial selection for the obligation. This yields the
// shallow result we are looking for -- that is, what specific impl.
let infcx = tcx
.infer_ctxt()
.ignoring_regions()
.with_opaque_type_inference(DefiningAnchor::Bubble)
.build();
//~^ HACK `Bubble` is required for
// this test to pass: type-alias-impl-trait/assoc-projection-ice.rs
let infcx = tcx.infer_ctxt().ignoring_regions().build();
let mut selcx = SelectionContext::new(&infcx);
let obligation_cause = ObligationCause::dummy();
@ -79,10 +73,5 @@ pub fn codegen_select_candidate<'tcx>(
let impl_source = infcx.resolve_vars_if_possible(impl_source);
let impl_source = infcx.tcx.erase_regions(impl_source);
// Opaque types may have gotten their hidden types constrained, but we can ignore them safely
// as they will get constrained elsewhere, too.
// (ouz-a) This is required for `type-alias-impl-trait/assoc-projection-ice.rs` to pass
let _ = infcx.take_opaque_types();
Ok(&*tcx.arena.alloc(impl_source))
}