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| author | Richard Sandiford <richard.sandiford@arm.com> | 2020-01-10 14:56:20 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2020-01-10 14:56:20 +0000 |
| commit | ac190fcea1bebf87a2c8c3963548a0e5272c42ec (patch) | |
| tree | 0652422c6b4fa21ff8ff9b88f65df7593d91e028 | |
| parent | 2fb672a2574004a1e77c8ba83af539673f5cf659 (diff) | |
| download | gcc-ac190fcea1bebf87a2c8c3963548a0e5272c42ec.tar.gz | |
Fix gather/scatter check when updating a vector epilogue loop
update_epilogue_loop_vinfo applies SSA renmaing to the DR_REF of a
gather or scatter, so that vect_check_gather_scatter continues to work.
However, we sometimes also rely on vect_check_gather_scatter when
using gathers and scatters to implement strided accesses.
This showed up on existing tests when testing with fixed-length
-msve-vector-bits=128.
2020-01-10 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* tree-vect-loop.c (update_epilogue_loop_vinfo): Update DR_REF
for any type of gather or scatter, including strided accesses.
From-SVN: r280111
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-vect-loop.c | 2 |
2 files changed, 6 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f8298abebd7..28564f723e1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2020-01-10 Richard Sandiford <richard.sandiford@arm.com> + + * tree-vect-loop.c (update_epilogue_loop_vinfo): Update DR_REF + for any type of gather or scatter, including strided accesses. + 2020-01-10 Andre Vieira <andre.simoesdiasvieira@arm.com> * tree-vectorizer.h (get_dr_vinfo_offset): Add missing function diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index 596eafc2d3f..1fa3ba6d932 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -8451,7 +8451,7 @@ update_epilogue_loop_vinfo (class loop *epilogue, tree advance) updated offset we set using ADVANCE. Instead we have to make sure the reference in the data references point to the corresponding copy of the original in the epilogue. */ - if (STMT_VINFO_GATHER_SCATTER_P (stmt_vinfo)) + if (STMT_VINFO_MEMORY_ACCESS_TYPE (stmt_vinfo) == VMAT_GATHER_SCATTER) { DR_REF (dr) = simplify_replace_tree (DR_REF (dr), NULL_TREE, NULL_TREE, |