/* Vectorizer
- Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Free Software Foundation, Inc.
Contributed by Dorit Naishlos <dorit@il.ibm.com>
|| ((D) == vect_double_reduction_def) \
|| ((D) == vect_nested_cycle))
-/* Define verbosity levels. */
-enum verbosity_levels {
- REPORT_NONE,
- REPORT_VECTORIZED_LOCATIONS,
- REPORT_UNVECTORIZED_LOCATIONS,
- REPORT_COST,
- REPORT_ALIGNMENT,
- REPORT_DR_DETAILS,
- REPORT_BAD_FORM_LOOPS,
- REPORT_OUTER_LOOPS,
- REPORT_SLP,
- REPORT_DETAILS,
- /* New verbosity levels should be added before this one. */
- MAX_VERBOSITY_LEVEL
-};
-
/************************************************************************
SLP
************************************************************************/
+typedef void *slp_void_p;
+DEF_VEC_P (slp_void_p);
+DEF_VEC_ALLOC_P (slp_void_p, heap);
-/* A computation tree of an SLP instance. Each node corresponds to a group of
+/* A computation tree of an SLP instance. Each node corresponds to a group of
stmts to be packed in a SIMD stmt. */
typedef struct _slp_tree {
- /* Only binary and unary operations are supported. LEFT child corresponds to
- the first operand and RIGHT child to the second if the operation is
- binary. */
- struct _slp_tree *left;
- struct _slp_tree *right;
+ /* Nodes that contain def-stmts of this node statements operands. */
+ VEC (slp_void_p, heap) *children;
/* A group of scalar stmts to be vectorized together. */
VEC (gimple, heap) *stmts;
/* Vectorized stmt/s. */
#define SLP_INSTANCE_LOADS(S) (S)->loads
#define SLP_INSTANCE_FIRST_LOAD_STMT(S) (S)->first_load
-#define SLP_TREE_LEFT(S) (S)->left
-#define SLP_TREE_RIGHT(S) (S)->right
+#define SLP_TREE_CHILDREN(S) (S)->children
#define SLP_TREE_SCALAR_STMTS(S) (S)->stmts
#define SLP_TREE_VEC_STMTS(S) (S)->vec_stmts
#define SLP_TREE_NUMBER_OF_VEC_STMTS(S) (S)->vec_stmts_size
#define SLP_TREE_OUTSIDE_OF_LOOP_COST(S) (S)->cost.outside_of_loop
#define SLP_TREE_INSIDE_OF_LOOP_COST(S) (S)->cost.inside_of_loop
+/* This structure is used in creation of an SLP tree. Each instance
+ corresponds to the same operand in a group of scalar stmts in an SLP
+ node. */
+typedef struct _slp_oprnd_info
+{
+ /* Def-stmts for the operands. */
+ VEC (gimple, heap) *def_stmts;
+ /* Information about the first statement, its vector def-type, type, the
+ operand itself in case it's constant, and an indication if it's a pattern
+ stmt. */
+ enum vect_def_type first_dt;
+ tree first_def_type;
+ tree first_const_oprnd;
+ bool first_pattern;
+} *slp_oprnd_info;
+
+DEF_VEC_P(slp_oprnd_info);
+DEF_VEC_ALLOC_P(slp_oprnd_info, heap);
+
typedef struct _vect_peel_info
{
/* The mask used to check the alignment of pointers or arrays. */
int ptr_mask;
+ /* The loop nest in which the data dependences are computed. */
+ VEC (loop_p, heap) *loop_nest;
+
/* All data references in the loop. */
VEC (data_reference_p, heap) *datarefs;
/* Reduction cycles detected in the loop. Used in loop-aware SLP. */
VEC (gimple, heap) *reductions;
+ /* All reduction chains in the loop, represented by the first
+ stmt in the chain. */
+ VEC (gimple, heap) *reduction_chains;
+
/* Hash table used to choose the best peeling option. */
htab_t peeling_htab;
+ /* When we have strided data accesses with gaps, we may introduce invalid
+ memory accesses. We peel the last iteration of the loop to prevent
+ this. */
+ bool peeling_for_gaps;
+
} *loop_vec_info;
/* Access Functions. */
#define LOOP_VINFO_VECTORIZABLE_P(L) (L)->vectorizable
#define LOOP_VINFO_VECT_FACTOR(L) (L)->vectorization_factor
#define LOOP_VINFO_PTR_MASK(L) (L)->ptr_mask
+#define LOOP_VINFO_LOOP_NEST(L) (L)->loop_nest
#define LOOP_VINFO_DATAREFS(L) (L)->datarefs
#define LOOP_VINFO_DDRS(L) (L)->ddrs
#define LOOP_VINFO_INT_NITERS(L) (TREE_INT_CST_LOW ((L)->num_iters))
#define LOOP_VINFO_SLP_INSTANCES(L) (L)->slp_instances
#define LOOP_VINFO_SLP_UNROLLING_FACTOR(L) (L)->slp_unrolling_factor
#define LOOP_VINFO_REDUCTIONS(L) (L)->reductions
+#define LOOP_VINFO_REDUCTION_CHAINS(L) (L)->reduction_chains
#define LOOP_VINFO_PEELING_HTAB(L) (L)->peeling_htab
+#define LOOP_VINFO_PEELING_FOR_GAPS(L) (L)->peeling_for_gaps
#define LOOP_REQUIRES_VERSIONING_FOR_ALIGNMENT(L) \
VEC_length (gimple, (L)->may_misalign_stmts) > 0
tree dr_step;
tree dr_aligned_to;
+ /* For loop PHI nodes, the evolution part of it. This makes sure
+ this information is still available in vect_update_ivs_after_vectorizer
+ where we may not be able to re-analyze the PHI nodes evolution as
+ peeling for the prologue loop can make it unanalyzable. The evolution
+ part is still correct though. */
+ tree loop_phi_evolution_part;
+
/* Used for various bookkeeping purposes, generally holding a pointer to
some other stmt S that is in some way "related" to this stmt.
Current use of this field is:
pattern). */
gimple related_stmt;
+ /* Used to keep a sequence of def stmts of a pattern stmt if such exists. */
+ gimple_seq pattern_def_seq;
+
/* List of datarefs that are known to have the same alignment as the dataref
of this stmt. */
VEC(dr_p,heap) *same_align_refs;
/* Whether the stmt is SLPed, loop-based vectorized, or both. */
enum slp_vect_type slp_type;
- /* Interleaving info. */
- /* First data-ref in the interleaving group. */
- gimple first_dr;
- /* Pointer to the next data-ref in the group. */
- gimple next_dr;
- /* In case that two or more stmts share data-ref, this is the pointer to the
- previously detected stmt with the same dr. */
+ /* Interleaving and reduction chains info. */
+ /* First element in the group. */
+ gimple first_element;
+ /* Pointer to the next element in the group. */
+ gimple next_element;
+ /* For data-refs, in case that two or more stmts share data-ref, this is the
+ pointer to the previously detected stmt with the same dr. */
gimple same_dr_stmt;
- /* The size of the interleaving group. */
+ /* The size of the group. */
unsigned int size;
/* For stores, number of stores from this group seen. We vectorize the last
one. */
/* Is this statement vectorizable or should it be skipped in (partial)
vectorization. */
bool vectorizable;
+
+ /* For loads only, true if this is a gather load. */
+ bool gather_p;
} *stmt_vec_info;
/* Access Functions. */
#define STMT_VINFO_VEC_STMT(S) (S)->vectorized_stmt
#define STMT_VINFO_VECTORIZABLE(S) (S)->vectorizable
#define STMT_VINFO_DATA_REF(S) (S)->data_ref_info
+#define STMT_VINFO_GATHER_P(S) (S)->gather_p
#define STMT_VINFO_DR_BASE_ADDRESS(S) (S)->dr_base_address
#define STMT_VINFO_DR_INIT(S) (S)->dr_init
#define STMT_VINFO_IN_PATTERN_P(S) (S)->in_pattern_p
#define STMT_VINFO_RELATED_STMT(S) (S)->related_stmt
+#define STMT_VINFO_PATTERN_DEF_SEQ(S) (S)->pattern_def_seq
#define STMT_VINFO_SAME_ALIGN_REFS(S) (S)->same_align_refs
#define STMT_VINFO_DEF_TYPE(S) (S)->def_type
-#define STMT_VINFO_DR_GROUP_FIRST_DR(S) (S)->first_dr
-#define STMT_VINFO_DR_GROUP_NEXT_DR(S) (S)->next_dr
-#define STMT_VINFO_DR_GROUP_SIZE(S) (S)->size
-#define STMT_VINFO_DR_GROUP_STORE_COUNT(S) (S)->store_count
-#define STMT_VINFO_DR_GROUP_GAP(S) (S)->gap
-#define STMT_VINFO_DR_GROUP_SAME_DR_STMT(S)(S)->same_dr_stmt
-#define STMT_VINFO_DR_GROUP_READ_WRITE_DEPENDENCE(S) (S)->read_write_dep
-#define STMT_VINFO_STRIDED_ACCESS(S) ((S)->first_dr != NULL)
-
-#define DR_GROUP_FIRST_DR(S) (S)->first_dr
-#define DR_GROUP_NEXT_DR(S) (S)->next_dr
-#define DR_GROUP_SIZE(S) (S)->size
-#define DR_GROUP_STORE_COUNT(S) (S)->store_count
-#define DR_GROUP_GAP(S) (S)->gap
-#define DR_GROUP_SAME_DR_STMT(S) (S)->same_dr_stmt
-#define DR_GROUP_READ_WRITE_DEPENDENCE(S) (S)->read_write_dep
+#define STMT_VINFO_GROUP_FIRST_ELEMENT(S) (S)->first_element
+#define STMT_VINFO_GROUP_NEXT_ELEMENT(S) (S)->next_element
+#define STMT_VINFO_GROUP_SIZE(S) (S)->size
+#define STMT_VINFO_GROUP_STORE_COUNT(S) (S)->store_count
+#define STMT_VINFO_GROUP_GAP(S) (S)->gap
+#define STMT_VINFO_GROUP_SAME_DR_STMT(S) (S)->same_dr_stmt
+#define STMT_VINFO_GROUP_READ_WRITE_DEPENDENCE(S) (S)->read_write_dep
+#define STMT_VINFO_STRIDED_ACCESS(S) ((S)->first_element != NULL && (S)->data_ref_info)
+#define STMT_VINFO_LOOP_PHI_EVOLUTION_PART(S) (S)->loop_phi_evolution_part
+
+#define GROUP_FIRST_ELEMENT(S) (S)->first_element
+#define GROUP_NEXT_ELEMENT(S) (S)->next_element
+#define GROUP_SIZE(S) (S)->size
+#define GROUP_STORE_COUNT(S) (S)->store_count
+#define GROUP_GAP(S) (S)->gap
+#define GROUP_SAME_DR_STMT(S) (S)->same_dr_stmt
+#define GROUP_READ_WRITE_DEPENDENCE(S) (S)->read_write_dep
#define STMT_VINFO_RELEVANT_P(S) ((S)->relevant != vect_unused_in_scope)
#define STMT_VINFO_OUTSIDE_OF_LOOP_COST(S) (S)->cost.outside_of_loop
extern unsigned int current_vector_size;
extern tree get_vectype_for_scalar_type (tree);
extern tree get_same_sized_vectype (tree, tree);
-extern bool vect_is_simple_use (tree, loop_vec_info, bb_vec_info, gimple *,
+extern bool vect_is_simple_use (tree, gimple, loop_vec_info,
+ bb_vec_info, gimple *,
tree *, enum vect_def_type *);
-extern bool vect_is_simple_use_1 (tree, loop_vec_info, bb_vec_info, gimple *,
+extern bool vect_is_simple_use_1 (tree, gimple, loop_vec_info,
+ bb_vec_info, gimple *,
tree *, enum vect_def_type *, tree *);
extern bool supportable_widening_operation (enum tree_code, gimple, tree, tree,
tree *, tree *, enum tree_code *,
extern tree vectorizable_function (gimple, tree, tree);
extern void vect_model_simple_cost (stmt_vec_info, int, enum vect_def_type *,
slp_tree);
-extern void vect_model_store_cost (stmt_vec_info, int, enum vect_def_type,
- slp_tree);
-extern void vect_model_load_cost (stmt_vec_info, int, slp_tree);
+extern void vect_model_store_cost (stmt_vec_info, int, bool,
+ enum vect_def_type, slp_tree);
+extern void vect_model_load_cost (stmt_vec_info, int, bool, slp_tree);
extern void vect_finish_stmt_generation (gimple, gimple,
gimple_stmt_iterator *);
extern bool vect_mark_stmts_to_be_vectorized (loop_vec_info);
extern void vect_remove_stores (gimple);
extern bool vect_analyze_stmt (gimple, bool *, slp_tree);
extern bool vectorizable_condition (gimple, gimple_stmt_iterator *, gimple *,
- tree, int);
+ tree, int, slp_tree);
extern void vect_get_load_cost (struct data_reference *, int, bool,
unsigned int *, unsigned int *);
extern void vect_get_store_cost (struct data_reference *, int, unsigned int *);
+extern bool vect_supportable_shift (enum tree_code, tree);
+extern void vect_get_vec_defs (tree, tree, gimple, VEC (tree, heap) **,
+ VEC (tree, heap) **, slp_tree, int);
+extern tree vect_gen_perm_mask (tree, unsigned char *);
/* In tree-vect-data-refs.c. */
extern bool vect_can_force_dr_alignment_p (const_tree, unsigned int);
extern tree vect_get_smallest_scalar_type (gimple, HOST_WIDE_INT *,
HOST_WIDE_INT *);
extern bool vect_analyze_data_ref_dependences (loop_vec_info, bb_vec_info,
- int *, bool *);
+ int *);
extern bool vect_enhance_data_refs_alignment (loop_vec_info);
extern bool vect_analyze_data_refs_alignment (loop_vec_info, bb_vec_info);
extern bool vect_verify_datarefs_alignment (loop_vec_info, bb_vec_info);
extern bool vect_analyze_data_ref_accesses (loop_vec_info, bb_vec_info);
extern bool vect_prune_runtime_alias_test_list (loop_vec_info);
+extern tree vect_check_gather (gimple, loop_vec_info, tree *, tree *,
+ int *);
extern bool vect_analyze_data_refs (loop_vec_info, bb_vec_info, int *);
-extern tree vect_create_data_ref_ptr (gimple, struct loop *, tree, tree *,
- gimple *, bool, bool *);
+extern tree vect_create_data_ref_ptr (gimple, tree, struct loop *, tree,
+ tree *, gimple_stmt_iterator *,
+ gimple *, bool, bool *);
extern tree bump_vector_ptr (tree, gimple, gimple_stmt_iterator *, gimple, tree);
extern tree vect_create_destination_var (tree, tree);
-extern bool vect_strided_store_supported (tree);
-extern bool vect_strided_load_supported (tree);
-extern bool vect_permute_store_chain (VEC(tree,heap) *,unsigned int, gimple,
+extern bool vect_strided_store_supported (tree, unsigned HOST_WIDE_INT);
+extern bool vect_store_lanes_supported (tree, unsigned HOST_WIDE_INT);
+extern bool vect_strided_load_supported (tree, unsigned HOST_WIDE_INT);
+extern bool vect_load_lanes_supported (tree, unsigned HOST_WIDE_INT);
+extern void vect_permute_store_chain (VEC(tree,heap) *,unsigned int, gimple,
gimple_stmt_iterator *, VEC(tree,heap) **);
extern tree vect_setup_realignment (gimple, gimple_stmt_iterator *, tree *,
enum dr_alignment_support, tree,
struct loop **);
-extern bool vect_permute_load_chain (VEC(tree,heap) *,unsigned int, gimple,
- gimple_stmt_iterator *, VEC(tree,heap) **);
-extern bool vect_transform_strided_load (gimple, VEC(tree,heap) *, int,
+extern void vect_transform_strided_load (gimple, VEC(tree,heap) *, int,
gimple_stmt_iterator *);
+extern void vect_record_strided_load_vectors (gimple, VEC(tree,heap) *);
extern int vect_get_place_in_interleaving_chain (gimple, gimple);
extern tree vect_get_new_vect_var (tree, enum vect_var_kind, const char *);
extern tree vect_create_addr_base_for_vector_ref (gimple, gimple_seq *,
extern tree get_initial_def_for_reduction (gimple, tree, tree *);
extern int vect_min_worthwhile_factor (enum tree_code);
extern int vect_get_known_peeling_cost (loop_vec_info, int, int *, int);
-extern int vect_get_single_scalar_iteraion_cost (loop_vec_info);
+extern int vect_get_single_scalar_iteration_cost (loop_vec_info);
/* In tree-vect-slp.c. */
extern void vect_free_slp_instance (slp_instance);
extern bool vect_schedule_slp (loop_vec_info, bb_vec_info);
extern void vect_update_slp_costs_according_to_vf (loop_vec_info);
extern bool vect_analyze_slp (loop_vec_info, bb_vec_info);
-extern void vect_make_slp_decision (loop_vec_info);
+extern bool vect_make_slp_decision (loop_vec_info);
extern void vect_detect_hybrid_slp (loop_vec_info);
-extern void vect_get_slp_defs (tree, tree, slp_tree, VEC (tree,heap) **,
- VEC (tree,heap) **, int);
+extern void vect_get_slp_defs (VEC (tree, heap) *, slp_tree,
+ VEC (slp_void_p, heap) **, int);
+
extern LOC find_bb_location (basic_block);
extern bb_vec_info vect_slp_analyze_bb (basic_block);
extern void vect_slp_transform_bb (basic_block);
/* Pattern recognition functions.
Additional pattern recognition functions can (and will) be added
in the future. */
-typedef gimple (* vect_recog_func_ptr) (gimple, tree *, tree *);
-#define NUM_PATTERNS 4
+typedef gimple (* vect_recog_func_ptr) (VEC (gimple, heap) **, tree *, tree *);
+#define NUM_PATTERNS 10
void vect_pattern_recog (loop_vec_info);
/* In tree-vectorizer.c. */
unsigned vectorize_loops (void);
/* Vectorization debug information */
-extern bool vect_print_dump_info (enum verbosity_levels);
+extern bool vect_print_dump_info (enum vect_verbosity_levels);
#endif /* GCC_TREE_VECTORIZER_H */
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