swift234

SIL: Lower the context generic params for a SILDeclRef independent of its type.

Instead of relying on type lowering to produce a contextualized SILFunctionType from which we can borrow context generic params, add a getConstantContextGenericParams that grabs the generic param list for a SILDeclRef independent of the function type, severing another dependency on SILFunctionType's context params.

Swift SVN r13743