2014-02-21 Richard Biener <rguenther@suse.de>
commita8cf7702cb82312e61c45744d402be05174dddb9
authorrguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Fri, 21 Feb 2014 13:18:54 +0000 (21 13:18 +0000)
committerrguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Fri, 21 Feb 2014 13:18:54 +0000 (21 13:18 +0000)
tree1e75ea5d008d884d77d7e4d771c8dff421db6753
parentc8a9710d42bcc14cea1e626582cb36a1f128c22f
2014-02-21  Richard Biener  <rguenther@suse.de>

PR tree-optimization/60276
* tree-vectorizer.h (struct _stmt_vec_info): Add min_neg_dist field.
(STMT_VINFO_MIN_NEG_DIST): New macro.
* tree-vect-data-refs.c (vect_analyze_data_ref_dependence): Record
STMT_VINFO_MIN_NEG_DIST.
* tree-vect-stmts.c (vectorizable_load): Verify if assumptions
made for negative dependence distances still hold.

* gcc.dg/vect/pr60276.c: New testcase.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@207992 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog
gcc/testsuite/ChangeLog
gcc/testsuite/gcc.dg/vect/pr60276.c [new file with mode: 0644]
gcc/tree-vect-data-refs.c
gcc/tree-vect-stmts.c
gcc/tree-vectorizer.h