Hi,
I applied a patch before to keep ssa_name information in struct iv.  Seems
this function somehow slipped away.
Will apply it to trunk.

Thanks,
bin

2015-06-26  Bin Cheng  <bin.cheng@arm.com>

	* tree-ssa-loop-ivopts.c (record_sub_use): Don't reset ssa_name
	field in struct iv.