#3123: make INLINE work for recursive definitions (generalized loop peeling/loop
unrolling)
---------------------------------+------------------------------------------
Reporter: claus | Owner:
Type: feature request | Status: new
Priority: normal | Milestone: 6.12 branch
Component: Compiler | Version: 6.11
Severity: normal | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Os: Unknown/Multiple
Architecture: Unknown/Multiple |
---------------------------------+------------------------------------------
Comment (by batterseapower):
Implemented as a compiler plugin (http://github.com/batterseapower/unroll-
plugin/tree/master). Has some unfortunate limitations:
* Annotations can only occur on top level things, so we can't unroll
local definitions
* Ugly annotation syntax :-)
* If your functions require dictionaries, the annotated functions
sometimes don't 'look' recursive before the simplifier / specialiser has
had a go at them, because they call directly into a recursive worker.
Workaround: always give your functions monomorphic types! I've tried to
avoid this by simplifying a bit before we hit the unroller, though.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3123#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
