#2790: Use -fregs-graph by default
---------------------------------+------------------------------------------
Reporter: igloo | Owner: benl
Type: task | Status: assigned
Priority: high | Milestone: 6.12.1
Component: Compiler | Version: 6.8.3
Severity: normal | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Os: Unknown/Multiple
Architecture: Unknown/Multiple |
---------------------------------+------------------------------------------
Comment (by Roel van Dijk):
I'll comment on this ticket since all related tickets refer to this one.
When building the [http://hackage.haskell.org/package/encoding-0.6.2
encoding-0.6.2] package with library profiling enabled GHC panics on the
rather large (1010547 bytes) file
[http://hackage.haskell.org/packages/archive/encoding/0.6.2/doc/html/Data-
Encoding-GB18030.html Data.Encoding.GB18030] which is a Chinese character
encoding.
GHC panics with both the linear allocator and the graph colouring one.
With linear allocator:
{{{
[40 of 65] Compiling Data.Encoding.GB18030 (
dist/build/Data/Encoding/GB18030.hs, dist/build/Data/Encoding/GB18030.p_o
)
ghc: panic! (the 'impossible' happened)
(GHC version 6.10.4 for i386-unknown-linux):
RegAllocLinear.getStackSlotFor: out of stack slots, try -fregs-
graph
}}}
With register graph colouring:
{{{
[40 of 65] Compiling Data.Encoding.GB18030 (
dist/build/Data/Encoding/GB18030.hs, dist/build/Data/Encoding/GB18030.p_o
)
ghc: panic! (the 'impossible' happened)
(GHC version 6.10.4 for i386-unknown-linux):
regSpill: out of spill slots!
regs to spill = 800
slots left = 677
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2790#comment:12>
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
