#3170: -fregs-graph: GraphOps.coalesceNodes: can't coalesce the same node.
-------------------------------+--------------------------------------------
Reporter: igloo | Owner:
Type: bug | Status: new
Priority: high | Milestone: 6.12.1
Component: Compiler | Version: 6.10.2
Severity: normal | Keywords:
Difficulty: Unknown | Testcase:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
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If `-fregs-graph` is used then the build fails when compiling
`PrimOps.cmm`:
{{{
$ /home/ian/ghc/darcs/ghc/ghc/stage1-inplace/ghc -Werror -H64m -O0 -fasm
-optc-O2 -I../includes -I. -Iparallel -Ism -Ieventlog -DCOMPILING_RTS
-package-name rts -static -I../gmp/gmpbuild -I../libffi/build/include -I.
-dcmm-lint -c PrimOps.cmm -o PrimOps.o -fregs-graph
ghc: panic! (the 'impossible' happened)
(GHC version 6.11.20090409 for x86_64-unknown-linux):
GraphOps.coalesceNodes: can't coalesce the same node.
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
}}}
This blocks #2790.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3170>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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