diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-05-23 09:46:18 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-05-23 09:46:18 +0000 |
| commit | a38db81cf6c0cf691cde1e7f8c746a924a38fa1b (patch) | |
| tree | 5b8e0030d481ca0c60b78591fd6c31ea9c778ce8 /gcc/tree-vect-data-refs.c | |
| parent | 00dc003762c18d20d455aca4e8736057dcd9ba22 (diff) | |
| download | gcc-a38db81cf6c0cf691cde1e7f8c746a924a38fa1b.tar.gz | |
2014-05-23 Richard Biener <rguenther@suse.de>
Backport from mainline
2013-08-30 Richard Biener <rguenther@suse.de>
PR tree-optimization/58228
* tree-vect-data-refs.c (vect_analyze_data_ref_access): Do not
allow invariant loads in nested loop vectorization.
* gcc.dg/torture/pr58228.c: New testcase.
2013-09-26 Richard Biener <rguenther@suse.de>
PR tree-optimization/58539
* tree-vect-loop.c (vect_create_epilog_for_reduction): Honor
the fact that debug statements are not taking part in loop-closed
SSA construction.
* gcc.dg/torture/pr58539.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_7-branch@210847 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-vect-data-refs.c')
| -rw-r--r-- | gcc/tree-vect-data-refs.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index 0faf1a93c9d..07253ec011d 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -2332,6 +2332,12 @@ vect_analyze_data_ref_access (struct data_reference *dr) if (loop_vinfo && dr_step == 0) { GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt)) = NULL; + if (nested_in_vect_loop_p (loop, stmt)) + { + if (vect_print_dump_info (REPORT_DETAILS)) + fprintf (vect_dump, "zero step in inner loop of nest"); + return false; + } return DR_IS_READ (dr); } |