projects
/
ghc-hetmet.git
/ blobdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
|
commitdiff
|
tree
raw
|
inline
| side by side
Make recursion and RULES interact better
[ghc-hetmet.git]
/
compiler
/
main
/
TidyPgm.lhs
diff --git
a/compiler/main/TidyPgm.lhs
b/compiler/main/TidyPgm.lhs
index
4e01fd3
..
aee6743
100644
(file)
--- a/
compiler/main/TidyPgm.lhs
+++ b/
compiler/main/TidyPgm.lhs
@@
-451,9
+451,10
@@
addExternal (id,rhs) needed
= extendVarEnv (foldVarSet add_occ needed new_needed_ids)
id show_unfold
where
= extendVarEnv (foldVarSet add_occ needed new_needed_ids)
id show_unfold
where
- add_occ id needed = extendVarEnv needed id False
+ add_occ id needed | id `elemVarEnv` needed = needed
+ | otherwise = extendVarEnv needed id False
-- "False" because we don't know we need the Id's unfolding
-- "False" because we don't know we need the Id's unfolding
- -- We'll override it later when we find the binding site
+ -- Don't override existing bindings; we might have already set it to True
new_needed_ids = worker_ids `unionVarSet`
unfold_ids `unionVarSet`
new_needed_ids = worker_ids `unionVarSet`
unfold_ids `unionVarSet`