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| author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-09-14 16:30:36 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-09-14 16:30:36 +0000 |
| commit | e8f142e28262a5048c6f40f4bfb6a612d3da55f0 (patch) | |
| tree | be4373fc3725870e0d59bf2eddb56c9874962e4d /gcc/tree-vectorizer.h | |
| parent | dccf43aed37281a7bb91a7984a75470ad62eb0f1 (diff) | |
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Add a vect_get_num_copies helper routine
This patch adds a vectoriser helper routine to calculate how
many copies of a vector statement we need. At present this
is always:
LOOP_VINFO_VECT_FACTOR (loop_vinfo) / TYPE_VECTOR_SUBPARTS (vectype)
but later patches add other cases. Another benefit of using
a helper routine is that it can assert that the division is
exact (which it must be).
2017-09-14 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* tree-vectorizer.h (vect_get_num_copies): New function.
* tree-vect-data-refs.c (vect_get_data_access_cost): Use it.
* tree-vect-loop.c (vectorizable_reduction): Likewise.
(vectorizable_induction): Likewise.
(vectorizable_live_operation): Likewise.
* tree-vect-stmts.c (vectorizable_mask_load_store): Likewise.
(vectorizable_bswap): Likewise.
(vectorizable_call): Likewise.
(vectorizable_conversion): Likewise.
(vectorizable_assignment): Likewise.
(vectorizable_shift): Likewise.
(vectorizable_operation): Likewise.
(vectorizable_store): Likewise.
(vectorizable_load): Likewise.
(vectorizable_condition): Likewise.
(vectorizable_comparison): Likewise.
(vect_analyze_stmt): Pass the slp node to vectorizable_live_operation.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r252764
Diffstat (limited to 'gcc/tree-vectorizer.h')
| -rw-r--r-- | gcc/tree-vectorizer.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/tree-vectorizer.h b/gcc/tree-vectorizer.h index 7ed0078..6efcd51 100644 --- a/gcc/tree-vectorizer.h +++ b/gcc/tree-vectorizer.h @@ -1076,6 +1076,20 @@ unlimited_cost_model (loop_p loop) return (flag_vect_cost_model == VECT_COST_MODEL_UNLIMITED); } +/* Return the number of copies needed for loop vectorization when + a statement operates on vectors of type VECTYPE. This is the + vectorization factor divided by the number of elements in + VECTYPE and is always known at compile time. */ + +static inline unsigned int +vect_get_num_copies (loop_vec_info loop_vinfo, tree vectype) +{ + gcc_checking_assert (LOOP_VINFO_VECT_FACTOR (loop_vinfo) + % TYPE_VECTOR_SUBPARTS (vectype) == 0); + return (LOOP_VINFO_VECT_FACTOR (loop_vinfo) + / TYPE_VECTOR_SUBPARTS (vectype)); +} + /* Source location */ extern source_location vect_location; |