gcc/ChangeLog

	* tree-vectorizer.c (new_loop_vec_info): Initialize new 
	field.
	(destroy_loop_vec_info): Add call to VEC_free.
	* tree-vectorizer.h (may_alias_ddrs): Define.
	(LOOP_VINFO_MAY_ALIAS_DDRS): Define.
	* tree-vect-analyze.c (vect_analyze_data_ref_dependence):
	Change reporting to dump.
	(vect_is_duplicate_ddr): New.
	(vect_mark_for_runtime_alias_test): New.
	(vect_analyze_data_ref_dependences) Add call to
	vect_mark_for_runtime_alias_test.
	(vect_enhance_data_refs_alignment): Define local variable
	vect_versioning_for_alias_required, don't perform
	peeling for alignment if versioning for alias is
	required.
	(vect_enhance_data_refs_alignment): Use
	PARAM_VECT_MAX_VERSION_FOR_ALIGNMENT_CHECKS instead of
	PARAM_VECT_MAX_VERSION_CHECKS.
	* tree-vect-transform.c
	(vect_create_cond_for_alias_checks): New.
	(vect_transform_loop): Add call to
	vect_create_cond_for_alias_checks.
	(vect_vfa_segment_size): New.
	* params.def (PARAM_VECT_MAX_VERSION_FOR_ALIGNMENT_CHECKS):
	Rename.
	(PARAM_VECT_MAX_VERSION_FOR_ALIAS_CHECKS): Define.
	* gcc/doc/invoke.texi
	(vect-max-version-for-alignment-checks): Document.
	(vect-max-version-for-alias-checks): Document.
	(vect-max-version-checks): Remove.
     
gcc/testsuite/ChangeLog

	* gcc.dg/vect/vect-vfa-01.c: New.
	* gcc.dg/vect/vect-vfa-02.c: New.
	* gcc.dg/vect/vect-vfa-03.c: New.
	* gcc.dg/vect/vect-vfa-04.c: New.
	* gcc.dg/vect/vect-102a.c, gcc.dg/vect/vect-51.c,
	gcc.dg/vect/pr29145.c, gcc.dg/vect/vect-43.c,
	gcc.dg/vect/vect-61.c, gcc.dg/vect/vect-53.c,
	gcc.dg/vect/vect-45.c, gcc.dg/vect/vect-101.c,
	gcc.dg/vect/vect-37.c, gcc.dg/vect/vect-79.c,
	gcc.dg/vect/vect-102.c, gcc.dg/vect/vect-dv-2.c,
	gcc.dg/vect/vect-57.c, gcc.dg/vect/vect-49.c,
	gfortran.dg/vect/pr19049.f90: Rename to start with
	prefix no-vfa-.
	* gcc.dg/vect/vect.exp: Disable versioning for alias
	when test starts with no-vfa-.
	* gfortran.dg/vect/vect.exp: Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@127559 138bc75d-0d04-0410-961f-82ee72b054a4

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