Add a suppression flag to stop Typeable bindings being emitted with -ddump-simpl

When reading core output, it is very distracting to always have to wade through a large number of bindings generated by Typeable. In most cases I don't care about any of these so it would be easier if there was some way to stop them being printed or being generated in the first place.

Trac metadata

Trac field	Value
Version	8.0.1
Type	Task
TypeOfFailure	OtherFailure
Priority	low
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture

changed weight to 3

added Ttask Trac import labels

You could probably filter them out by name pretty easily. Just add a special case to the HsBind and Bind Outputable instances with an associated DynFlag. I'm not sure whether you really want to stop emitting them entirely; afterall, then some programs would fail to compile.

added newcomer label

added Plow label

added Typeable label

This was addressed in !1646 (closed).

closed