[GHC] #14001: Inlining does not work between modules
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Thu Jul 20 23:04:39 UTC 2017
#14001: Inlining does not work between modules
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Reporter: danilo2 | Owner: (none)
Type: bug | Status: new
Priority: high | Milestone:
Component: Compiler | Version: 8.0.2
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture:
| Unknown/Multiple
Type of failure: None/Unknown | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s):
Wiki Page: |
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Comment (by simonpj):
I'm confused. In Matthew's repro case,
* Function `(.)` is defined in module `A` and not exported.
* So far as I can see, it is inlined at all its call sites in `A`.
* The comment says that adding a bang to one of `(.)`'s arguments makes a
big perf difference. That does not sound like a bug to me.
Can someone explain what the problem is?
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14001#comment:7>
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