r121026 - in /trunk/gcc: ChangeLog testsuite/Ch...

[irar at gcc dot gnu dot org]

Author: irar
Date: Sun Jan 21 09:22:56 2007
New Revision: 121026

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=121026
Log:
	* tree-vectorizer.h (struct _stmt_vec_info): Add new field
	read_write_dep and macros for its access.
	* tree-vectorizer.c (new_stmt_vec_info): Initialize the new field.
	* tree-vect-analyze.c (vect_analyze_data_ref_dependence): Remove
	argument, call vect_check_interleaving for every independent pair of
	data-refs. Mark loads that access the same memory location as a store
	in the loop.
	(vect_check_dependences): Remove.
	(vect_analyze_data_ref_dependences): Remove  vect_check_dependences
	call, fix the call to vect_analyze_data_ref_dependence.
	(vect_analyze_data_ref_access): For statements that access the same
	data-ref, check that they are not stores; for loads, check that there
	is no store that access the same location.


Added:
    trunk/gcc/testsuite/gcc.dg/vect/vect-strided-same-dr.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-analyze.c
    trunk/gcc/tree-vectorizer.c
    trunk/gcc/tree-vectorizer.h