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| author | Richard Guenther <rguenther@suse.de> | 2008-08-04 18:35:20 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2008-08-04 18:35:20 +0000 |
| commit | 7eeef08ed83f2bd341dc420adc6402199ccbdd7d (patch) | |
| tree | 55b52bec69bc8c8d01185d71e8d9fad6eb7e5930 /gcc/tree-ssa-loop-ivopts.c | |
| parent | 8f45dcf8be0e2bc9c91674d89636a1abe3f6bc92 (diff) | |
| download | gcc-7eeef08ed83f2bd341dc420adc6402199ccbdd7d.zip gcc-7eeef08ed83f2bd341dc420adc6402199ccbdd7d.tar.gz gcc-7eeef08ed83f2bd341dc420adc6402199ccbdd7d.tar.bz2 | |
tree-ssa-loop-ivopts.c (add_iv_value_candidates): Also add the candidate with the stripped base if...
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.
From-SVN: r138647
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 c314da4..1a1e58b 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); } |