tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Do not disable peeling...

tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Do not disable peeling when we version for aliasing.

2013-05-10  Richard Biener  <rguenther@suse.de>

	* tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Do not
	disable peeling when we version for aliasing.
	(vector_alignment_reachable_p): Honor explicit user alignment.
	(vect_supportable_dr_alignment): Likewise.
	* tree-vect-loop-manip.c (vect_can_advance_ivs_p): Use
	STMT_VINFO_LOOP_PHI_EVOLUTION_PART instead of recomputing it.
	* tree-vect-loop.c (vect_transform_loop): First apply versioning,
	then peeling to arrange for the cost-model check to come first.

	* gcc.target/i386/avx256-unaligned-load-2.c: Make well-defined.
	* gcc.target/i386/l_fma_double_1.c: Adjust.
	* gcc.target/i386/l_fma_double_2.c: Likewise.
	* gcc.target/i386/l_fma_double_3.c: Likewise.
	* gcc.target/i386/l_fma_double_4.c: Likewise.
	* gcc.target/i386/l_fma_double_5.c: Likewise.
	* gcc.target/i386/l_fma_double_6.c: Likewise.
	* gcc.target/i386/l_fma_float_1.c: Likewise.
	* gcc.target/i386/l_fma_float_2.c: Likewise.
	* gcc.target/i386/l_fma_float_3.c: Likewise.
	* gcc.target/i386/l_fma_float_4.c: Likewise.
	* gcc.target/i386/l_fma_float_5.c: Likewise.
	* gcc.target/i386/l_fma_float_6.c: Likewise.

From-SVN: r198767