diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-08-04 18:35:20 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-08-04 18:35:20 +0000 |
| commit | 0cfdcbde72ceea7dec504f270427cb3550674694 (patch) | |
| tree | 55b52bec69bc8c8d01185d71e8d9fad6eb7e5930 /gcc/tree-ssa-loop-ivopts.c | |
| parent | dd7d1eeb56a38857423c6d830b4c3cce82c8f3a7 (diff) | |
| download | gcc-0cfdcbde72ceea7dec504f270427cb3550674694.tar.gz | |
2008-08-04 Richard Guenther <rguenther@suse.de>
* tree-ssa-loop-ivopts.c (add_iv_value_candidates): Also add
the candidate with the stripped base if that base is different
from the original base even for offset zero.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@138647 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-loop-ivopts.c')
| -rw-r--r-- | gcc/tree-ssa-loop-ivopts.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c index c314da49f94..1a1e58b1a81 100644 --- a/gcc/tree-ssa-loop-ivopts.c +++ b/gcc/tree-ssa-loop-ivopts.c @@ -2275,9 +2275,11 @@ add_iv_value_candidates (struct ivopts_data *data, add_candidate (data, build_int_cst (basetype, 0), iv->step, true, use); - /* Third, try removing the constant offset. */ + /* Third, try removing the constant offset. Make sure to even + add a candidate for &a[0] vs. (T *)&a. */ base = strip_offset (iv->base, &offset); - if (offset) + if (offset + || base != iv->base) add_candidate (data, base, iv->step, false, use); } |