#15013: Building nofib using llvm and HEAD fails -------------------------------------+------------------------------------- Reporter: AndreasK | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.4.2 Component: Compiler | Version: (LLVM) | Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Compile-time Unknown/Multiple | crash or panic Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- {{{ == make all ; in /home/Andi/ghc_head/nofib/shootout/pidigits ------------------------------------------------------------------------ HC = /home/Andi/ghc_head/inplace/bin/ghc-stage2 HC_OPTS = -O2 -Rghc-timing -H32m -hisuf hi -fllvm -rtsopts -O2 RUNTEST_OPTS = -ghc-timing ==nofib== pidigits: time to compile Main follows... /home/Andi/ghc_head/inplace/bin/ghc-stage2 -O2 -Rghc-timing -H32m -hisuf hi -fllvm -rtsopts -O2 -c Main.hs -o Main.o ghc-stage2.exe: panic! (the 'impossible' happened) (GHC version 8.5.20180401 for x86_64-unknown-mingw32): Each block should be reachable from only one ProcPoint Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug <<ghc: 506688344 bytes, 156 GCs, 7738569/16639872 avg/max bytes residency (5 samples), 37M in use, 0.000 INIT (0.000 elapsed), 0.344 MUT (0.333 elapsed), 0.062 GC (0.112 elapsed) :ghc>> make[1]: *** [../../mk/suffix.mk:23: Main.o] Error 1 Failed making all in pidigits: 1 make: *** [../mk/ghc-recurse.mk:69: all] Error 1 $ opt --version LLVM (http://llvm.org/): LLVM version 5.0.1 Optimized build. Default target: x86_64-w64-windows-gnu Host CPU: skylake }}} This is on commit 8b823f270e53627ddca1a993c05f1ab556742d96 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15013> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler