#6099: filepath library a lot bigger in 7.4.2 RC 1
---------------------------------+------------------------------------------
Reporter: igloo | Owner: pcapriotti
Type: bug | Status: new
Priority: highest | Milestone: 7.4.2
Component: Compiler | Version: 7.4.2-rc1
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: None/Unknown
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
---------------------------------+------------------------------------------
Comment(by pcapriotti):
Replying to [comment:4 simonpj]:
> and that this inlining (plus three other fns) led to '''doubling''' the
size of the binary?
Actually, the whole `splitDrive` function is being inlined (and it wasn't
in 7.4.1).
> Do you know why it makes such a big difference? Are there a '''lot'''
of calls to `readDriveLetter`?
There are quite a few calls to `splitDrive`, which is rather large.
> Can you make a small test case that demonstrates the unwanted inlining?
(I assume inlining is happening that does not give a big pay-off.)
I attached a slimmed-down version of `System.FilePath.Internal` which
shows the doubling in binary size.
> I don't want people to have to add pragmas to suppress code bloat that
gives no useful performance benefit.
Sure, the patch wasn't meant as a solution, just a demonstration of the
problem.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6099#comment:5>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
_______________________________________________
Glasgow-haskell-bugs mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
