Get correct options when calling 'clang' inplace of 'as' (#5903)
Get correct options when calling 'clang' inplace of 'as' (#5903)

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