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| author | Kewen Lin <linkw@gcc.gnu.org> | 2020-06-03 17:15:14 +0800 |
|---|---|---|
| committer | Kewen Lin <linkw@linux.ibm.com> | 2020-06-11 03:26:42 -0500 |
| commit | 042f4082979aa22e08c008ed4c5b4bab3915a9c2 (patch) | |
| tree | a5de78d0a2e113b7c07db9bd5912d66c0da75edd /gcc/tree-vectorizer.h | |
| parent | 8ff57396d6dea4976b05902919070aa0e562354d (diff) | |
| download | gcc-042f4082979aa22e08c008ed4c5b4bab3915a9c2.zip gcc-042f4082979aa22e08c008ed4c5b4bab3915a9c2.tar.gz gcc-042f4082979aa22e08c008ed4c5b4bab3915a9c2.tar.bz2 | |
vect: Rename can_fully_mask_p to can_use_partial_vectors_p
Power supports vector memory access with length (in bytes) instructions.
Like existing fully masking for SVE, it is another approach to vectorize
the loop using partially-populated vectors.
As Richard Sandiford pointed out, we should extend the existing flag
can_fully_mask_p to be more generic, to indicate whether we have
any chances with partial vectors for this loop. So this patch
is to rename this flag to can_use_partial_vectors_p to be more
meaningful, also rename the macro LOOP_VINFO_CAN_FULLY_MASK_P
to LOOP_VINFO_CAN_USE_PARTIAL_VECTORS_P.
Bootstrapped/regtested on aarch64-linux-gnu.
gcc/ChangeLog:
* tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Rename
can_fully_mask_p to can_use_partial_vectors_p.
(vect_analyze_loop_2): Rename LOOP_VINFO_CAN_FULLY_MASK_P to
LOOP_VINFO_CAN_USE_PARTIAL_VECTORS_P. Rename saved_can_fully_mask_p
to saved_can_use_partial_vectors_p.
(vectorizable_reduction): Rename LOOP_VINFO_CAN_FULLY_MASK_P to
LOOP_VINFO_CAN_USE_PARTIAL_VECTORS_P.
(vectorizable_live_operation): Likewise.
* tree-vect-stmts.c (permute_vec_elements): Likewise.
(check_load_store_masking): Likewise.
(vectorizable_operation): Likewise.
(vectorizable_store): Likewise.
(vectorizable_load): Likewise.
(vectorizable_condition): Likewise.
* tree-vectorizer.h (LOOP_VINFO_CAN_FULLY_MASK_P): Renamed to ...
(LOOP_VINFO_CAN_USE_PARTIAL_VECTORS_P): ... this.
(_loop_vec_info): Rename can_fully_mask_p to can_use_partial_vectors_p.
Diffstat (limited to 'gcc/tree-vectorizer.h')
| -rw-r--r-- | gcc/tree-vectorizer.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/gcc/tree-vectorizer.h b/gcc/tree-vectorizer.h index 14f68f7..c459280 100644 --- a/gcc/tree-vectorizer.h +++ b/gcc/tree-vectorizer.h @@ -631,8 +631,11 @@ public: /* Is the loop vectorizable? */ bool vectorizable; - /* Records whether we still have the option of using a fully-masked loop. */ - bool can_fully_mask_p; + /* Records whether we still have the option of vectorizing this loop + using partially-populated vectors; in other words, whether it is + still possible for one iteration of the vector loop to handle + fewer than VF scalars. */ + bool can_use_partial_vectors_p; /* True if have decided to use a fully-masked loop. */ bool fully_masked_p; @@ -698,7 +701,7 @@ public: #define LOOP_VINFO_COST_MODEL_THRESHOLD(L) (L)->th #define LOOP_VINFO_VERSIONING_THRESHOLD(L) (L)->versioning_threshold #define LOOP_VINFO_VECTORIZABLE_P(L) (L)->vectorizable -#define LOOP_VINFO_CAN_FULLY_MASK_P(L) (L)->can_fully_mask_p +#define LOOP_VINFO_CAN_USE_PARTIAL_VECTORS_P(L) (L)->can_use_partial_vectors_p #define LOOP_VINFO_FULLY_MASKED_P(L) (L)->fully_masked_p #define LOOP_VINFO_VECT_FACTOR(L) (L)->vectorization_factor #define LOOP_VINFO_MAX_VECT_FACTOR(L) (L)->max_vectorization_factor |