After applying the patch from !15423, the build on 32-bit PowerPC almost succeeds, but eventually fails with: ``` dpkg-buildpackage: error: debian/rules binary-arch subprocess failed with exit status 2 (sid_powerpc-dchroot)glaubitz@perotto:~/ghc3/ghc-9.10.3$ _build/stage0/bin/ghc -Wall -Wcompat -hisuf hi -osuf o -hcsuf hc -static -hide-all-packages -no-user-package-db '-package-env -' '-package-db _build/stage1/inplace/package.conf.d' '-this-unit-id ghc-9.10.3-inplace' '-this-package-name ghc' '-package-id array-0.5.8.0-inplace' '-package-id base-4.20.2.0-inplace' '-package-id binary-0.8.9.3-inplace' '-package-id bytestring-0.12.2.0-inplace' '-package-id containers-0.7-inplace' '-package-id deepseq-1.5.0.0-inplace' '-package-id directory-1.3.8.5-inplace' '-package-id exceptions-0.10.9-inplace' '-package-id filepath-1.5.4.0-inplace' '-package-id ghc-boot-9.10.3-inplace' '-package-id ghc-heap-9.10.3-inplace' '-package-id ghci-9.10.3-inplace' '-package-id hpc-0.7.0.2-inplace' '-package-id process-1.6.26.1-inplace' '-package-id semaphore-compat-1.0.0-inplace' '-package-id stm-2.5.3.1-inplace' '-package-id template-haskell-2.22.0.0-inplace' '-package-id time-1.12.2-inplace' '-package-id transformers-0.6.1.1-inplace' '-package-id unix-2.8.7.0-inplace' -i -i/home/glaubitz/ghc3/ghc-9.10.3/_build/stage1/compiler/build -i/home/glaubitz/ghc3/ghc-9.10.3/_build/stage1/compiler/build/autogen -i/home/glaubitz/ghc3/ghc-9.10.3/compiler -Irts/include -I_build/stage1/compiler/build -I_build/stage1/compiler/build/. -Icompiler/. -I/home/glaubitz/ghc3/ghc-9.10.3/libraries/process/include -I/home/glaubitz/ghc3/ghc-9.10.3/_build/stage1/libraries/process/build/include -I/home/glaubitz/ghc3/ghc-9.10.3/libraries/directory -I/home/glaubitz/ghc3/ghc-9.10.3/_build/stage1/libraries/directory/build -I/home/glaubitz/ghc3/ghc-9.10.3/libraries/unix/include -I/home/glaubitz/ghc3/ghc-9.10.3/_build/stage1/libraries/unix/build/include -I/home/glaubitz/ghc3/ghc-9.10.3/libraries/time/lib/include -I/home/glaubitz/ghc3/ghc-9.10.3/_build/stage1/libraries/time/build/lib/include -I/home/glaubitz/ghc3/ghc-9.10.3/libraries/containers/containers/include -I/home/glaubitz/ghc3/ghc-9.10.3/_build/stage1/libraries/containers/containers/build/include -I/home/glaubitz/ghc3/ghc-9.10.3/libraries/bytestring/include -I/home/glaubitz/ghc3/ghc-9.10.3/_build/stage1/libraries/bytestring/build/include -I/home/glaubitz/ghc3/ghc-9.10.3/libraries/ghc-internal/include -I/home/glaubitz/ghc3/ghc-9.10.3/_build/stage1/libraries/ghc-internal/build/include -I/home/glaubitz/ghc3/ghc-9.10.3/libraries/ghc-bignum/include/ -I/home/glaubitz/ghc3/ghc-9.10.3/_build/stage1/libraries/ghc-bignum/build/include/ -I/home/glaubitz/ghc3/ghc-9.10.3/rts/include -I/home/glaubitz/ghc3/ghc-9.10.3/_build/stage1/rts/build/include -optP-include -optP_build/stage1/compiler/build/autogen/cabal_macros.h -optP-DHAVE_INTERNAL_INTERPRETER -optP-DCAN_LOAD_DLL -outputdir _build/stage1/compiler/build -fdiagnostics-color=always -Wall -Wno-name-shadowing -Wnoncanonical-monad-instances -Wnoncanonical-monoid-instances -XGHC2021 -XNoImplicitPrelude -XMonoLocalBinds -no-global-package-db -package-db=/home/glaubitz/ghc3/ghc-9.10.3/_build/stage1/inplace/package.conf.d -ghcversion-file=rts/include/ghcversion.h -ghcversion-file=rts/include/ghcversion.h -Wnoncanonical-monad-instances -optc-Wno-error=inline -c compiler/GHC/StgToCmm/Ticky.hs -o _build/stage1/compiler/build/GHC/StgToCmm/Ticky.o -fsplit-sections -O -H64m -O2 -haddock -optc--param -optcggc-min-expand=10 -optc-O3 -optc-no-integrated-cpp -haddock -Winvalid-haddock -Wno-deprecated-flags -Wcpp-undef -Wno-deprecations ghc: panic! (the 'impossible' happened) GHC version 9.10.3: iselExpr64(powerpc) _skUd::I64 - 14 :: W64 Call stack: CallStack (from HasCallStack): callStackDoc, called at compiler/GHC/Utils/Panic.hs:190:37 in ghc:GHC.Utils.Panic pprPanic, called at compiler/GHC/CmmToAsm/PPC/CodeGen.hs:396:6 in ghc:GHC.CmmToAsm.PPC.CodeGen CallStack (from HasCallStack): panic, called at compiler/GHC/Utils/Error.hs:507:29 in ghc:GHC.Utils.Error Please report this as a GHC bug: https://www.haskell.org/ghc/reportabug (sid_powerpc-dchroot)glaubitz@perotto:~/ghc3/ghc-9.10.3$ ``` Attaching the out of `-ddump-cmm` and `-ddump-asm-native`. [iselExpr64-cmm-dump.txt](/uploads/39f50e24dedd06c5d8a256238e7f7047/iselExpr64-cmm-dump.txt) [iselExpr64-asm-dump.txt](/uploads/1acbdd9c33c055cd055837735d2927f9/iselExpr64-asm-dump.txt)