diff options
Diffstat (limited to 'gcc/tree-vectorizer.h')
| -rw-r--r-- | gcc/tree-vectorizer.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/gcc/tree-vectorizer.h b/gcc/tree-vectorizer.h index 5d273ca..06224f9 100644 --- a/gcc/tree-vectorizer.h +++ b/gcc/tree-vectorizer.h @@ -790,7 +790,11 @@ STMT_VINFO_BB_VINFO (stmt_vec_info stmt_vinfo) #define STMT_SLP_TYPE(S) (S)->slp_type struct dataref_aux { + /* The misalignment in bytes of the reference, or -1 if not known. */ int misalignment; + /* The byte alignment that we'd ideally like the reference to have, + and the value that misalignment is measured against. */ + int target_alignment; /* If true the alignment of base_decl needs to be increased. */ bool base_misaligned; tree base_decl; @@ -1037,7 +1041,11 @@ dr_misalignment (struct data_reference *dr) #define SET_DR_MISALIGNMENT(DR, VAL) set_dr_misalignment (DR, VAL) #define DR_MISALIGNMENT_UNKNOWN (-1) -/* Return TRUE if the data access is aligned, and FALSE otherwise. */ +/* Only defined once DR_MISALIGNMENT is defined. */ +#define DR_TARGET_ALIGNMENT(DR) DR_VECT_AUX (DR)->target_alignment + +/* Return true if data access DR is aligned to its target alignment + (which may be less than a full vector). */ static inline bool aligned_access_p (struct data_reference *data_ref_info) @@ -1054,6 +1062,19 @@ known_alignment_for_access_p (struct data_reference *data_ref_info) return (DR_MISALIGNMENT (data_ref_info) != DR_MISALIGNMENT_UNKNOWN); } +/* Return the minimum alignment in bytes that the vectorized version + of DR is guaranteed to have. */ + +static inline unsigned int +vect_known_alignment_in_bytes (struct data_reference *dr) +{ + if (DR_MISALIGNMENT (dr) == DR_MISALIGNMENT_UNKNOWN) + return TYPE_ALIGN_UNIT (TREE_TYPE (DR_REF (dr))); + if (DR_MISALIGNMENT (dr) == 0) + return DR_TARGET_ALIGNMENT (dr); + return DR_MISALIGNMENT (dr) & -DR_MISALIGNMENT (dr); +} + /* Return the behavior of DR with respect to the vectorization context (which for outer loop vectorization might not be the behavior recorded in DR itself). */ |