Perform CSE on expressions producing non-unique arrays.
Perform CSE on expressions producing non-unique arrays.

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