diff options
| author | Richard Sandiford <richard.sandiford@arm.com> | 2016-07-06 08:16:53 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2016-07-06 08:16:53 +0000 |
| commit | 62da9e14ce5b670bf40a91f1dc9473579a2d5549 (patch) | |
| tree | f64f6affdc9e9aa406115967f1fe3db21b1b124c /gcc/tree-vectorizer.h | |
| parent | 2de001eed013bb666f832694bc75b8f055ffdc76 (diff) | |
| download | gcc-62da9e14ce5b670bf40a91f1dc9473579a2d5549.zip gcc-62da9e14ce5b670bf40a91f1dc9473579a2d5549.tar.gz gcc-62da9e14ce5b670bf40a91f1dc9473579a2d5549.tar.bz2 | |
[7/7] Add negative and zero strides to vect_memory_access_type
This patch uses the vect_memory_access_type from patch 6 to represent
the effect of a negative contiguous stride or a zero stride. The latter
is valid only for loads.
Tested on aarch64-linux-gnu and x86_64-linux-gnu.
gcc/
* tree-vectorizer.h (vect_memory_access_type): Add
VMAT_INVARIANT, VMAT_CONTIGUOUS_DOWN and VMAT_CONTIGUOUS_REVERSED.
* tree-vect-stmts.c (compare_step_with_zero): New function.
(perm_mask_for_reverse): Move further up file.
(get_group_load_store_type): Stick to VMAT_ELEMENTWISE if the
step is negative.
(get_negative_load_store_type): New function.
(get_load_store_type): Call it. Add an ncopies argument.
(vectorizable_mask_load_store): Update call accordingly and
remove tests for negative steps.
(vectorizable_store, vectorizable_load): Likewise. Handle new
memory_access_types.
From-SVN: r238039
Diffstat (limited to 'gcc/tree-vectorizer.h')
| -rw-r--r-- | gcc/tree-vectorizer.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/tree-vectorizer.h b/gcc/tree-vectorizer.h index ef69b7e..2cfb72a 100644 --- a/gcc/tree-vectorizer.h +++ b/gcc/tree-vectorizer.h @@ -484,14 +484,26 @@ enum slp_vect_type { /* Describes how we're going to vectorize an individual load or store, or a group of loads or stores. */ enum vect_memory_access_type { + /* An access to an invariant address. This is used only for loads. */ + VMAT_INVARIANT, + /* A simple contiguous access. */ VMAT_CONTIGUOUS, + /* A contiguous access that goes down in memory rather than up, + with no additional permutation. This is used only for stores + of invariants. */ + VMAT_CONTIGUOUS_DOWN, + /* A simple contiguous access in which the elements need to be permuted after loading or before storing. Only used for loop vectorization; SLP uses separate permutes. */ VMAT_CONTIGUOUS_PERMUTE, + /* A simple contiguous access in which the elements need to be reversed + after loading or before storing. */ + VMAT_CONTIGUOUS_REVERSE, + /* An access that uses IFN_LOAD_LANES or IFN_STORE_LANES. */ VMAT_LOAD_STORE_LANES, |