No need to use FreeVarSubsts in MemoryBlockMerging anymore.
No need to use FreeVarSubsts in MemoryBlockMerging anymore.

HIPERFIT/futhark,HIPERFIT/futhark,diku-dk/futhark,ihc/futhark,ihc/futhark,diku-dk/futhark,ihc/futhark,diku-dk/futhark,diku-dk/futhark,HIPERFIT/futhark,diku-dk/futhark