Use GenericSignature::getSubstitutions() in AttributeChecker::visitSpecializeAttr()
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…ecializeAttr. Rather than implement an ad hoc version of GenericSignature::getSubstitutions(), walk the requirements enough to check the validity of the @_specialize attribute and then use GenericSignature::getSubstitutions() to actually form the resulting substitutions. One less place in the code where we depend on witness markers.
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@swift-ci please smoke test and merge |
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Rather than implement an ad hoc version of
GenericSignature::getSubstitutions(), walk the requirements enough tocheck the validity of the
@_specializeattribute and then useGenericSignature::getSubstitutions()to actually form the resultingsubstitutions.
One less place in the code where we depend on witness markers.