re PR tree-optimization/28887 (rejects valid code (bitfields and loops) with -O1 -fprefetch-loop-arrays)

2006-09-17  Zdenek Dvorak <dvorakz@suse.cz>

	PR tree-optimization/28887
	* tree-ssa-loop-prefetch.c (analyze_ref): Strip nonaddressable
	component parts from the reference.
	(gather_memory_references_ref): Record the reference without the
	nonaddressable component parts.

	* gcc.dg/prefetch-loop-arrays-1.c: New test case.

From-SVN: r117012