GitLab

This makes sure that join points are fully specialised in loops which are
marked as ForceSpecConstr.

Now, -ddump-rule-firings only shows the names of the rules that fired (it would
show "before" and "after" with -dverbose-core2core previously) and
-ddump-rule-rewrites always shows the "before" and "after" bits, even without
-dverbose-core2core.

This patch removes the Lint test, and comments why

See Note [WildCard binders] in SimplEnv.  Spotted by Roman.

This was causing Trac #4524, by optimising
     (e |> co)  to   e
on the LHS of a rule.  Result, the template variable
'co' wasn't bound any more.

Now that substition doesn't optimise, it seems sensible to call
simpleOptExpr rather than substExpr when substituting in the
RHS of rules.  Not a big deal either way.

They are no longer right, as we have Haskell' generating new Haskell
standards.

I ran across this bug and took the time to fix it, closing
a long time due TODO in InteractiveEval.hs

Instead of looking around to find the enclosing declaration
of a tick, this patch makes use of the information already collected during the
coverage desugaring phase

rather then the bootstrapping compiler. This fixes problems where the
bootstrapping compiler dynamically links against libraries not on the
target machine.

Still TODO: Add the other relaxation (#1060) and update the alternative
layout rule to use the extension.