Add missing constant folding and optimisation for unsigned division Noticed by Denys Rtveliashvili <rtvd@mac.com>, see #4004
Add missing constant folding and optimisation for unsigned division
Noticed by Denys Rtveliashvili <rtvd@mac.com>, see #4004

mcmaniac/ghc,vTurbine/ghc,ryantm/ghc,sgillespie/ghc,sgillespie/ghc,nomeata/ghc,nkaretnikov/ghc,siddhanathan/ghc,frantisekfarka/ghc-dsi,vikraman/ghc,christiaanb/ghc,forked-upstream-packages-for-ghcjs/ghc,GaloisInc/halvm-ghc,siddhanathan/ghc,ml9951/ghc,tibbe/ghc,nkaretnikov/ghc,mcmaniac/ghc,lukexi/ghc-7.8-arm64,urbanslug/ghc,green-haskell/ghc,acowley/ghc,urbanslug/ghc,mcschroeder/ghc,sgillespie/ghc,vikraman/ghc,gcampax/ghc,mfine/ghc,olsner/ghc,ezyang/ghc,mettekou/ghc,acowley/ghc,sdiehl/ghc,ghc-android/ghc,shlevy/ghc,urbanslug/ghc,ezyang/ghc,ezyang/ghc,hferreiro/replay,snoyberg/ghc,tjakway/ghcjvm,bitemyapp/ghc,mettekou/ghc,lukexi/ghc,wxwxwwxxx/ghc,mcschroeder/ghc,acowley/ghc,wxwxwwxxx/ghc,green-haskell/ghc,vikraman/ghc,lukexi/ghc,ml9951/ghc,tibbe/ghc,forked-upstream-packages-for-ghcjs/ghc,sdiehl/ghc,GaloisInc/halvm-ghc,sgillespie/ghc,fmthoma/ghc,elieux/ghc,wxwxwwxxx/ghc,mcschroeder/ghc,vikraman/ghc,lukexi/ghc-7.8-arm64,nathyong/microghc-ghc,ekmett/ghc,nomeata/ghc,gcampax/ghc,frantisekfarka/ghc-dsi,TomMD/ghc,ekmett/ghc,sdiehl/ghc,wxwxwwxxx/ghc,tjakway/ghcjvm,forked-upstream-packages-for-ghcjs/ghc,holzensp/ghc,acowley/ghc,elieux/ghc,gcampax/ghc,ekmett/ghc,da-x/ghc,oldmanmike/ghc,bitemyapp/ghc,ghc-android/ghc,da-x/ghc,shlevy/ghc,ekmett/ghc,snoyberg/ghc,mcmaniac/ghc,hferreiro/replay,tibbe/ghc,acowley/ghc,anton-dessiatov/ghc,tibbe/ghc,hferreiro/replay,TomMD/ghc,AlexanderPankiv/ghc,ghc-android/ghc,gridaphobe/ghc,GaloisInc/halvm-ghc,elieux/ghc,mettekou/ghc,christiaanb/ghc,nushio3/ghc,vikraman/ghc,TomMD/ghc,TomMD/ghc,olsner/ghc,da-x/ghc,olsner/ghc,siddhanathan/ghc,christiaanb/ghc,sdiehl/ghc,nomeata/ghc,mcschroeder/ghc,vTurbine/ghc,forked-upstream-packages-for-ghcjs/ghc,nathyong/microghc-ghc,mfine/ghc,da-x/ghc,gcampax/ghc,gridaphobe/ghc,frantisekfarka/ghc-dsi,gridaphobe/ghc,nushio3/ghc,shlevy/ghc,olsner/ghc,christiaanb/ghc,gridaphobe/ghc,tibbe/ghc,oldmanmike/ghc,sgillespie/ghc,wxwxwwxxx/ghc,bitemyapp/ghc,jstolarek/ghc,gcampax/ghc,lukexi/ghc-7.8-arm64,urbanslug/ghc,snoyberg/ghc,TomMD/ghc,ryantm/ghc,holzensp/ghc,holzensp/ghc,mfine/ghc,ml9951/ghc,anton-dessiatov/ghc,mettekou/ghc,mcschroeder/ghc,vTurbine/ghc,gcampax/ghc,spacekitteh/smcghc,hferreiro/replay,shlevy/ghc,urbanslug/ghc,spacekitteh/smcghc,sgillespie/ghc,ml9951/ghc,wxwxwwxxx/ghc,green-haskell/ghc,vTurbine/ghc,tjakway/ghcjvm,fmthoma/ghc,gridaphobe/ghc,jstolarek/ghc,jstolarek/ghc,fmthoma/ghc,lukexi/ghc,siddhanathan/ghc,oldmanmike/ghc,frantisekfarka/ghc-dsi,sdiehl/ghc,lukexi/ghc-7.8-arm64,vTurbine/ghc,da-x/ghc,olsner/ghc,nomeata/ghc,nathyong/microghc-ghc,GaloisInc/halvm-ghc,green-haskell/ghc,acowley/ghc,ryantm/ghc,bitemyapp/ghc,snoyberg/ghc,hferreiro/replay,elieux/ghc,ghc-android/ghc,ezyang/ghc,nathyong/microghc-ghc,christiaanb/ghc,AlexanderPankiv/ghc,urbanslug/ghc,ezyang/ghc,GaloisInc/halvm-ghc,elieux/ghc,tjakway/ghcjvm,anton-dessiatov/ghc,fmthoma/ghc,ml9951/ghc,vikraman/ghc,GaloisInc/halvm-ghc,sgillespie/ghc,mfine/ghc,TomMD/ghc,mettekou/ghc,AlexanderPankiv/ghc,nushio3/ghc,gridaphobe/ghc,anton-dessiatov/ghc,shlevy/ghc,fmthoma/ghc,christiaanb/ghc,mettekou/ghc,AlexanderPankiv/ghc,forked-upstream-packages-for-ghcjs/ghc,snoyberg/ghc,nushio3/ghc,nomeata/ghc,ml9951/ghc,hferreiro/replay,ilyasergey/GHC-XAppFix,nathyong/microghc-ghc,oldmanmike/ghc,elieux/ghc,mcmaniac/ghc,TomMD/ghc,oldmanmike/ghc,nushio3/ghc,lukexi/ghc-7.8-arm64,nkaretnikov/ghc,vikraman/ghc,GaloisInc/halvm-ghc,ilyasergey/GHC-XAppFix,nushio3/ghc,siddhanathan/ghc,sdiehl/ghc,fmthoma/ghc,oldmanmike/ghc,green-haskell/ghc,siddhanathan/ghc,ghc-android/ghc,anton-dessiatov/ghc,jstolarek/ghc,forked-upstream-packages-for-ghcjs/ghc,nushio3/ghc,acowley/ghc,tjakway/ghcjvm,gcampax/ghc,ryantm/ghc,tjakway/ghcjvm,christiaanb/ghc,ml9951/ghc,mfine/ghc,spacekitteh/smcghc,siddhanathan/ghc,lukexi/ghc,spacekitteh/smcghc,sdiehl/ghc,fmthoma/ghc,anton-dessiatov/ghc,ryantm/ghc,nathyong/microghc-ghc,oldmanmike/ghc,mcschroeder/ghc,da-x/ghc,ghc-android/ghc,olsner/ghc,mfine/ghc,snoyberg/ghc,wxwxwwxxx/ghc,ekmett/ghc,shlevy/ghc,urbanslug/ghc,holzensp/ghc,ml9951/ghc,spacekitteh/smcghc,ghc-android/ghc,ilyasergey/GHC-XAppFix,tjakway/ghcjvm,nkaretnikov/ghc,gridaphobe/ghc,mfine/ghc,nkaretnikov/ghc,olsner/ghc,nathyong/microghc-ghc,mettekou/ghc,nkaretnikov/ghc,vTurbine/ghc,elieux/ghc,AlexanderPankiv/ghc,hferreiro/replay,da-x/ghc,AlexanderPankiv/ghc,nkaretnikov/ghc,ezyang/ghc,snoyberg/ghc,holzensp/ghc,lukexi/ghc,ilyasergey/GHC-XAppFix,mcmaniac/ghc,AlexanderPankiv/ghc,bitemyapp/ghc,shlevy/ghc,mcschroeder/ghc,jstolarek/ghc,forked-upstream-packages-for-ghcjs/ghc,vTurbine/ghc,anton-dessiatov/ghc,frantisekfarka/ghc-dsi,ezyang/ghc