ghc-8.4.3: The GHC API

Safe HaskellNone
LanguageHaskell2010

OptCoercion

Synopsis

Documentation

optCoercion :: TCvSubst -> Coercion -> NormalCo Source #

optCoercion applies a substitution to a coercion, *and* optimises it to reduce its size

checkAxInstCo :: Coercion -> Maybe CoAxBranch Source #

Check to make sure that an AxInstCo is internally consistent. Returns the conflicting branch, if it exists See Note [Conflict checking with AxiomInstCo]