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| author | Ilya Enkovich <ilya.enkovich@intel.com> | 2016-04-29 13:27:24 +0000 |
|---|---|---|
| committer | Ilya Enkovich <ienkovich@gcc.gnu.org> | 2016-04-29 13:27:24 +0000 |
| commit | cca535a4c158308a7a3a6486b6b66efb576da585 (patch) | |
| tree | d784c314f3a6795ebd3163ce9db4f9afa2d8ecd5 /gcc/tree-vect-loop.c | |
| parent | 2fff3db89fa064071835924a7a9e1751a0b383fa (diff) | |
| download | gcc-cca535a4c158308a7a3a6486b6b66efb576da585.zip gcc-cca535a4c158308a7a3a6486b6b66efb576da585.tar.gz gcc-cca535a4c158308a7a3a6486b6b66efb576da585.tar.bz2 | |
tree-vect-loop.c (vect_transform_loop): Fix nb_iterations_upper_bound computation for vectorized loop.
gcc/
* tree-vect-loop.c (vect_transform_loop): Fix
nb_iterations_upper_bound computation for vectorized loop.
gcc/testsuite/
* gcc.target/i386/vect-unpack-2.c (avx512bw_test): Avoid
optimization of vector loop.
* gcc.target/i386/vect-unpack-3.c: New test.
* gcc.dg/vect/vect-nb-iter-ub-1.c: New test.
* gcc.dg/vect/vect-nb-iter-ub-2.c: New test.
* gcc.dg/vect/vect-nb-iter-ub-3.c: New test.
From-SVN: r235639
Diffstat (limited to 'gcc/tree-vect-loop.c')
| -rw-r--r-- | gcc/tree-vect-loop.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index d813b86..da98211 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -6921,11 +6921,13 @@ vect_transform_loop (loop_vec_info loop_vinfo) /* Reduce loop iterations by the vectorization factor. */ scale_loop_profile (loop, GCOV_COMPUTE_SCALE (1, vectorization_factor), expected_iterations / vectorization_factor); - loop->nb_iterations_upper_bound - = wi::udiv_floor (loop->nb_iterations_upper_bound, vectorization_factor); if (LOOP_VINFO_PEELING_FOR_GAPS (loop_vinfo) && loop->nb_iterations_upper_bound != 0) loop->nb_iterations_upper_bound = loop->nb_iterations_upper_bound - 1; + loop->nb_iterations_upper_bound + = wi::udiv_floor (loop->nb_iterations_upper_bound + 1, + vectorization_factor) - 1; + if (loop->any_estimate) { loop->nb_iterations_estimate |