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Consider a goal as NOT changed if its response is identity modulo regions

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This commit is contained in:
Michael Goulet 2023-07-27 04:00:18 +00:00
parent 99f60ec411
commit 1ffc6ca9a5
3 changed files with 34 additions and 2 deletions
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2
compiler/rustc_trait_selection/src/solve/eval_ctxt.rs
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@ -344,7 +344,7 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> {
Ok(response) => response,
};
let has_changed = !canonical_response.value.var_values.is_identity()
let has_changed = !canonical_response.value.var_values.is_identity_modulo_regions()
|| !canonical_response.value.external_constraints.opaque_types.is_empty();
let (certainty, nested_goals) = match self.instantiate_and_apply_query_response(
goal.param_env,