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| author | Richard Sandiford <richard.sandiford@arm.com> | 2019-11-16 11:40:22 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2019-11-16 11:40:22 +0000 |
| commit | e9acf80c96d681917d930869b7cbfb7d2fa54d51 (patch) | |
| tree | 0ccbb5b5dbff8afd58730f89b2eaa07d16f54ac5 /gcc/tree-loop-distribution.c | |
| parent | 97602450b04e94aff034381bf6ee4236b95727ed (diff) | |
| download | gcc-e9acf80c96d681917d930869b7cbfb7d2fa54d51.zip gcc-e9acf80c96d681917d930869b7cbfb7d2fa54d51.tar.gz gcc-e9acf80c96d681917d930869b7cbfb7d2fa54d51.tar.bz2 | |
Add flags to dr_with_seg_len_pair_t
This patch adds a bunch of flags to dr_with_seg_len_pair_t,
for use by later patches. The update to tree-loop-distribution.c
is conservatively correct, but might be tweakable later.
2019-11-16 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* tree-data-ref.h (DR_ALIAS_RAW, DR_ALIAS_WAR, DR_ALIAS_WAW)
(DR_ALIAS_ARBITRARY, DR_ALIAS_SWAPPED, DR_ALIAS_UNSWAPPED): New flags.
(dr_with_seg_len_pair_t::sequencing): New enum.
(dr_with_seg_len_pair_t::flags): New member variable.
(dr_with_seg_len_pair_t::dr_with_seg_len_pair_t): Take a sequencing
parameter and initialize the flags member variable.
* tree-loop-distribution.c (compute_alias_check_pairs): Update
call accordingly.
* tree-vect-data-refs.c (vect_prune_runtime_alias_test_list): Likewise.
Ensure the two data references in an alias pair are in statement
order, if there is a defined order.
* tree-data-ref.c (prune_runtime_alias_test_list): Use
DR_ALIAS_SWAPPED and DR_ALIAS_UNSWAPPED to record whether we've
swapped the references in a dr_with_seg_len_pair_t. OR together
the flags when merging two dr_with_seg_len_pair_ts. After merging,
try to restore the original dr_with_seg_len order, updating the
flags if that fails.
From-SVN: r278350
Diffstat (limited to 'gcc/tree-loop-distribution.c')
| -rw-r--r-- | gcc/tree-loop-distribution.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/tree-loop-distribution.c b/gcc/tree-loop-distribution.c index 29f8eab..28eeeb9 100644 --- a/gcc/tree-loop-distribution.c +++ b/gcc/tree-loop-distribution.c @@ -2476,7 +2476,9 @@ compute_alias_check_pairs (class loop *loop, vec<ddr_p> *alias_ddrs, dr_with_seg_len_pair_t dr_with_seg_len_pair (dr_with_seg_len (dr_a, seg_length_a, access_size_a, align_a), - dr_with_seg_len (dr_b, seg_length_b, access_size_b, align_b)); + dr_with_seg_len (dr_b, seg_length_b, access_size_b, align_b), + /* ??? Would WELL_ORDERED be safe? */ + dr_with_seg_len_pair_t::REORDERED); comp_alias_pairs->safe_push (dr_with_seg_len_pair); } |