#7192: Bug in -fregs-graph with -fnew-codegen
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Reporter: simonmar | Owner: benl
Type: bug | Status: new
Priority: highest | Milestone: 7.8.1
Component: Compiler | Version: 7.7
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: None/Unknown
Difficulty: Unknown | Testcase:
Blockedby: | Blocking: 4258
Related: |
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Comment(by simonmar):
Aha! You're absolutely right, it's a bug, sorry about that. I'm
validating a fix right now. I don't seem to be able to reproduce the
original problem, but I've definitely fixed the missing `R1` dependency.
I still think we need to look at the graph-colouring allocator though,
because I think it is interacting badly with the code generated by the new
code generator. The code I've seen doesn't look great. I'm leaving it
turned off for the time being, and I'll make a separate ticket.
If you could verify that you don't see the wrong answers any more after my
patch, that would be great. Patch coming shortly...
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7192#comment:9>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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