#5715: Inliner fails to inline a function, causing 20x slowdown
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Reporter: bos | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.2.1
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: Runtime performance bug
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Comment(by bos):
I'll see if I can repro this on HEAD.
If I don't write that peculiar definitional form of `uniformR`, then
`uniformR` (and presumably `uniformRange`) is never inlined, so the
difference between the two instances in the report above is indeed
significant.
I'll see if I can find a smaller repro with HEAD.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5715#comment:2>
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