Save and restore registers across calls to unlockClosure.
Save and restore registers across calls to unlockClosure.

We may not assume that registers are saved across calls to unlockClosure because
it could call a C function on some platforms.

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