Retain InlinePragInfo on wrappers

For some reason, when doing the worker/wrapper split, we transferred the
InlinePragInfo from the original function, but expunging it from the wrapper.
This meant, for example, that a NOINLINE function would have its wrapper
inlined, which isn't sensible.

For a change, fixing a bug involves only deleting code!

diff --git a/compiler/stranal/WorkWrap.lhs b/compiler/stranal/WorkWrap.lhs
index d964026..1010699 100644 (file)
--- a/compiler/stranal/WorkWrap.lhs
+++ b/compiler/stranal/WorkWrap.lhs
@@ -256,14 +256,19 @@ splitFun fn_id fn_info wrap_dmds res_info inline_prag rhs
        work_rhs = work_fn rhs
        work_id  = mkWorkerId work_uniq fn_id (exprType work_rhs) 
                        `setInlinePragma` inline_prag
+                               -- Any inline pragma (which sets when inlining is active) 
+                               -- on the original function is duplicated on the worker and wrapper
+                               -- It *matters* that the pragma stays on the wrapper
+                               -- It seems sensible to have it on the worker too, although we
+                               -- can't think of a compelling reason. (In ptic, INLINE things are 
+                               -- not w/wd)
                        `setIdNewStrictness` StrictSig (mkTopDmdType work_demands work_res_info)
                                -- Even though we may not be at top level, 
                                -- it's ok to give it an empty DmdEnv
 
        wrap_rhs = wrap_fn work_id
        wrap_id  = fn_id `setIdWorkerInfo` HasWorker work_id arity
-                        `setInlinePragma` AlwaysActive -- Zap any inline pragma;
-                                                       -- Put it on the worker instead
+
     in
     returnUs ([(work_id, work_rhs), (wrap_id, wrap_rhs)])
        -- Worker first, because wrapper mentions it