2017-03-03  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/79803
	* tree-ssa-loop-prefetch.c (tree_ssa_prefetch_arrays): Remove
	assert.
	(pass_loop_prefetch::execute): Disabled optimization if an
	assumption about L1 cache size is not met.
2017-03-03  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/79803
	* gcc.dg/tree-ssa/pr79803.c: New test.

From-SVN: r245869