#4428: Local functions lose their unfoldings
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Reporter: rl | Owner:
Type: bug | Status: merge
Priority: normal | Milestone: 7.0.2
Component: Compiler | Version: 7.1
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: Runtime performance bug
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Comment(by simonpj):
Replying to [comment:10 rl]:
> The previous behaviour was what I meant with "the rhs it would have
right before phase 0". So this ''has'' changed. It's a pity, actually, I
found the previous semantics much cleaner.
Lets just deal with this first. When I said that the change was
"invisible" I meant that it had no observable effect. The only difference
(I believe) is that if you say `INLINE[n]` then the rhs-to-be-inlined gets
optimised with phase=n (only). I suppose that potentially might save a bit
of work at the inline site. Is that what you mean?
I don't understand what you mean by the previous semantics being much
cleaner. The semantics hasn't changed, I believe. Do you think it has?
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4428#comment:11>
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