Finalize repeat expr inference behaviour with inferred repeat counts I believe this should be the last change of how repeat exprs are handled before it's finished for `generic_arg_infer`. Assuming we don't wind up deciding to replace this all with a new predicate kind :) This PR has three actual changes: - Always defer the checks to end of typeck even when generic arg infer is not enabled (needs an FCP) - Properly handle element exprs that are constants when the repeat count is inferred - "Isolate" each repeat expr check so that inference constraints from `Copy` goals dont affect other repeat expr checks resulting in weird order-dependent inference The commit history and tests should be relatively helpful for understanding this PR's impl. r? compiler-errors |
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