Do not run the compiler again for every case in futhark-bench.
Do not run the compiler again for every case in futhark-bench.

diku-dk/futhark,ihc/futhark,diku-dk/futhark,HIPERFIT/futhark,diku-dk/futhark,ihc/futhark,CulpaBS/wbBach,HIPERFIT/futhark,mrakgr/futhark,mrakgr/futhark,ihc/futhark,HIPERFIT/futhark,diku-dk/futhark,diku-dk/futhark,mrakgr/futhark