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| author | Bin Cheng <bin.cheng@arm.com> | 2017-06-07 10:56:54 +0000 |
|---|---|---|
| committer | Bin Cheng <amker@gcc.gnu.org> | 2017-06-07 10:56:54 +0000 |
| commit | 704c28eeebfa5fc3fb555eb980f149ca76a8b948 (patch) | |
| tree | 41d76aa330fbf57d65b3adc3737650006fbd3a4c /gcc/tree-vect-loop-manip.c | |
| parent | 7078979b291419f353804cc32ecfdb22367b6e0d (diff) | |
| download | gcc-704c28eeebfa5fc3fb555eb980f149ca76a8b948.zip gcc-704c28eeebfa5fc3fb555eb980f149ca76a8b948.tar.gz gcc-704c28eeebfa5fc3fb555eb980f149ca76a8b948.tar.bz2 | |
tree-vect-loop-manip.c (vect_do_peeling): Don't skip vector loop if versioning is required.
* tree-vect-loop-manip.c (vect_do_peeling): Don't skip vector loop
if versioning is required.
* tree-vect-loop.c (vect_analyze_loop_2): Merge niter check for loop
peeling with the check for versioning.
From-SVN: r248959
Diffstat (limited to 'gcc/tree-vect-loop-manip.c')
| -rw-r--r-- | gcc/tree-vect-loop-manip.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/gcc/tree-vect-loop-manip.c b/gcc/tree-vect-loop-manip.c index 0156c97..d60b84e 100644 --- a/gcc/tree-vect-loop-manip.c +++ b/gcc/tree-vect-loop-manip.c @@ -1691,9 +1691,11 @@ vect_do_peeling (loop_vec_info loop_vinfo, tree niters, tree nitersm1, /* Prolog loop may be skipped. */ bool skip_prolog = (prolog_peeling != 0); - /* Skip to epilog if scalar loop may be preferred. It's only used when - we peel for epilog loop. */ - bool skip_vector = (!LOOP_VINFO_NITERS_KNOWN_P (loop_vinfo)); + /* Skip to epilog if scalar loop may be preferred. It's only needed + when we peel for epilog loop and when it hasn't been checked with + loop versioning. */ + bool skip_vector = (!LOOP_VINFO_NITERS_KNOWN_P (loop_vinfo) + && !LOOP_REQUIRES_VERSIONING (loop_vinfo)); /* Epilog loop must be executed if the number of iterations for epilog loop is known at compile time, otherwise we need to add a check at the end of vector loop and skip to the end of epilog loop. */ |