add filterUnreachable to the Reg pipeline

src/Juvix/Compiler/Asm/Pipeline.hs

@@ -15,7 +15,7 @@ import Juvix.Compiler.Pipeline.EntryPoint
 -- | Perform transformations on JuvixAsm necessary before the translation to
 -- JuvixReg
 toReg' :: (Members '[Error AsmError, Reader Options] r) => InfoTable -> Sem r InfoTable
-toReg' = validate >=> computeStackUsage >=> computePrealloc
+toReg' = validate >=> filterUnreachable >=> computeStackUsage >=> computePrealloc
 
 toReg :: (Members '[Error JuvixError, Reader EntryPoint] r) => InfoTable -> Sem r InfoTable
 toReg = mapReader fromEntryPoint . mapError (JuvixError @AsmError) . toReg'