#5422: Panic when using lots of registers in cmm code
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Reporter: pumpkin | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.2.1 | Keywords:
Testcase: | Blockedby:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Comment(by pumpkin):
This bug is caused by the fact that baseRegOffset in CgUtils.hs has a
bunch of hard-coded pattern matches up to 10 on VanillaReg, and panics if
those aren't enough. I guess 10 registers are good enough for everyone?
Using statically computed offsets into the StgRegTable seems unfortunate
here, but I don't know how it works well enough to have any better ideas
:/
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5422#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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