Add -Odph
Add -Odph

This is the optimisation level recommended when compiling DPH programs. At the
moment, it is equivalent to -O2 -fno-method-sharing -fdicts-cheap
-fmax-simplifier-iterations20 -fno-spec-constr-threshold.

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