diff options
| author | Ira Rosen <irar@il.ibm.com> | 2008-09-21 08:36:07 +0000 |
|---|---|---|
| committer | Ira Rosen <irar@gcc.gnu.org> | 2008-09-21 08:36:07 +0000 |
| commit | 5abf386014d3f91ce41b3a946857587082a014b4 (patch) | |
| tree | dfb8bc780e774f94dbfe1e833a45241769136ada /gcc/tree-vect-transform.c | |
| parent | ce00be9ede1903cd30d8ea2431ff984288ac9eb0 (diff) | |
| download | gcc-5abf386014d3f91ce41b3a946857587082a014b4.zip gcc-5abf386014d3f91ce41b3a946857587082a014b4.tar.gz gcc-5abf386014d3f91ce41b3a946857587082a014b4.tar.bz2 | |
re PR tree-optimization/37539 (Hang for -O3)
PR tree-optimization/37539
* tree-vect-transform.c (vect_transform_strided_load): Save vector
statement in related statement field only for the first load of the
group of loads with the same data reference.
From-SVN: r140522
Diffstat (limited to 'gcc/tree-vect-transform.c')
| -rw-r--r-- | gcc/tree-vect-transform.c | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/gcc/tree-vect-transform.c b/gcc/tree-vect-transform.c index 06d6791..4965da4 100644 --- a/gcc/tree-vect-transform.c +++ b/gcc/tree-vect-transform.c @@ -5947,17 +5947,24 @@ vect_transform_strided_load (gimple stmt, VEC(tree,heap) *dr_chain, int size, STMT_VINFO_VEC_STMT (vinfo_for_stmt (next_stmt)) = new_stmt; else { - gimple prev_stmt = - STMT_VINFO_VEC_STMT (vinfo_for_stmt (next_stmt)); - gimple rel_stmt = - STMT_VINFO_RELATED_STMT (vinfo_for_stmt (prev_stmt)); - while (rel_stmt) - { - prev_stmt = rel_stmt; - rel_stmt = STMT_VINFO_RELATED_STMT (vinfo_for_stmt (rel_stmt)); - } - STMT_VINFO_RELATED_STMT (vinfo_for_stmt (prev_stmt)) = new_stmt; + if (!DR_GROUP_SAME_DR_STMT (vinfo_for_stmt (next_stmt))) + { + gimple prev_stmt = + STMT_VINFO_VEC_STMT (vinfo_for_stmt (next_stmt)); + gimple rel_stmt = + STMT_VINFO_RELATED_STMT (vinfo_for_stmt (prev_stmt)); + while (rel_stmt) + { + prev_stmt = rel_stmt; + rel_stmt = + STMT_VINFO_RELATED_STMT (vinfo_for_stmt (rel_stmt)); + } + + STMT_VINFO_RELATED_STMT (vinfo_for_stmt (prev_stmt)) = + new_stmt; + } } + next_stmt = DR_GROUP_NEXT_DR (vinfo_for_stmt (next_stmt)); gap_count = 1; /* If NEXT_STMT accesses the same DR as the previous statement, |