+2017-07-03 Richard Sandiford <richard.sandiford@linaro.org>
+
+ * tree-vectorizer.h (_stmt_vec_info): Replace individual dr_*
+ fields with dr_wrt_vec_loop.
+ (STMT_VINFO_DR_BASE_ADDRESS, STMT_VINFO_DR_INIT, STMT_VINFO_DR_OFFSET)
+ (STMT_VINFO_DR_STEP, STMT_VINFO_DR_ALIGNED_TO): Update accordingly.
+ (STMT_VINFO_DR_WRT_VEC_LOOP): New macro.
+ (vect_dr_behavior): New function.
+ (vect_create_addr_base_for_vector_ref): Remove loop parameter.
+ * tree-vect-data-refs.c (vect_compute_data_ref_alignment): Use
+ vect_dr_behavior. Use a step_preserves_misalignment_p boolean to
+ track whether the step preserves the misalignment.
+ (vect_create_addr_base_for_vector_ref): Remove loop parameter.
+ Use vect_dr_behavior.
+ (vect_setup_realignment): Update call accordingly.
+ (vect_create_data_ref_ptr): Likewise. Use vect_dr_behavior.
+ * tree-vect-loop-manip.c (vect_gen_prolog_loop_niters): Update
+ call to vect_create_addr_base_for_vector_ref.
+ (vect_create_cond_for_align_checks): Likewise.
+ * tree-vect-patterns.c (vect_recog_bool_pattern): Copy
+ STMT_VINFO_DR_WRT_VEC_LOOP as a block.
+ (vect_recog_mask_conversion_pattern): Likewise.
+ * tree-vect-stmts.c (compare_step_with_zero): Use vect_dr_behavior.
+ (new_stmt_vec_info): Remove redundant zeroing.
+
2017-07-02 Richard Earnshaw <rearnsha@arm.com>
* common/config/arm/arm-common.c (arm_be8_option): New function.
loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
struct loop *loop = NULL;
tree ref = DR_REF (dr);
- tree vectype;
- tree base, base_addr;
- tree misalign = NULL_TREE;
- tree aligned_to;
- tree step;
+ tree vectype = STMT_VINFO_VECTYPE (stmt_info);
+ tree base;
unsigned HOST_WIDE_INT alignment;
if (dump_enabled_p ())
/* Initialize misalignment to unknown. */
SET_DR_MISALIGNMENT (dr, DR_MISALIGNMENT_UNKNOWN);
- if (tree_fits_shwi_p (DR_STEP (dr)))
- misalign = DR_INIT (dr);
- aligned_to = DR_ALIGNED_TO (dr);
- base_addr = DR_BASE_ADDRESS (dr);
- vectype = STMT_VINFO_VECTYPE (stmt_info);
+ innermost_loop_behavior *drb = vect_dr_behavior (dr);
+ bool step_preserves_misalignment_p;
+
+ /* No step for BB vectorization. */
+ if (!loop)
+ {
+ gcc_assert (integer_zerop (drb->step));
+ step_preserves_misalignment_p = true;
+ }
/* In case the dataref is in an inner-loop of the loop that is being
vectorized (LOOP), we use the base and misalignment information
stays the same throughout the execution of the inner-loop, which is why
we have to check that the stride of the dataref in the inner-loop evenly
divides by the vector size. */
- if (loop && nested_in_vect_loop_p (loop, stmt))
+ else if (nested_in_vect_loop_p (loop, stmt))
{
tree step = DR_STEP (dr);
+ step_preserves_misalignment_p
+ = (tree_fits_shwi_p (step)
+ && tree_to_shwi (step) % GET_MODE_SIZE (TYPE_MODE (vectype)) == 0);
- if (tree_fits_shwi_p (step)
- && tree_to_shwi (step) % GET_MODE_SIZE (TYPE_MODE (vectype)) == 0)
- {
- if (dump_enabled_p ())
- dump_printf_loc (MSG_NOTE, vect_location,
- "inner step divides the vector-size.\n");
- misalign = STMT_VINFO_DR_INIT (stmt_info);
- aligned_to = STMT_VINFO_DR_ALIGNED_TO (stmt_info);
- base_addr = STMT_VINFO_DR_BASE_ADDRESS (stmt_info);
- }
- else
+ if (dump_enabled_p ())
{
- if (dump_enabled_p ())
+ if (step_preserves_misalignment_p)
+ dump_printf_loc (MSG_NOTE, vect_location,
+ "inner step divides the vector-size.\n");
+ else
dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
- "inner step doesn't divide the vector-size.\n");
- misalign = NULL_TREE;
+ "inner step doesn't divide the vector-size.\n");
}
}
else
{
tree step = DR_STEP (dr);
- unsigned vf = loop ? LOOP_VINFO_VECT_FACTOR (loop_vinfo) : 1;
+ unsigned vf = LOOP_VINFO_VECT_FACTOR (loop_vinfo);
+ step_preserves_misalignment_p
+ = (tree_fits_shwi_p (step)
+ && ((tree_to_shwi (step) * vf)
+ % GET_MODE_SIZE (TYPE_MODE (vectype)) == 0));
- if (tree_fits_shwi_p (step)
- && ((tree_to_shwi (step) * vf)
- % GET_MODE_SIZE (TYPE_MODE (vectype)) != 0))
- {
- if (dump_enabled_p ())
- dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
- "step doesn't divide the vector-size.\n");
- misalign = NULL_TREE;
- }
+ if (!step_preserves_misalignment_p && dump_enabled_p ())
+ dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
+ "step doesn't divide the vector-size.\n");
}
+ tree base_addr = drb->base_address;
/* To look at alignment of the base we have to preserve an inner MEM_REF
as that carries alignment information of the actual access. */
alignment = TYPE_ALIGN_UNIT (vectype);
- if ((compare_tree_int (aligned_to, alignment) < 0)
- || !misalign)
+ if ((compare_tree_int (drb->aligned_to, alignment) < 0)
+ || !step_preserves_misalignment_p)
{
if (dump_enabled_p ())
{
DR_VECT_AUX (dr)->base_element_aligned = true;
}
- if (loop && nested_in_vect_loop_p (loop, stmt))
- step = STMT_VINFO_DR_STEP (stmt_info);
- else
- step = DR_STEP (dr);
/* If this is a backward running DR then first access in the larger
vectype actually is N-1 elements before the address in the DR.
Adjust misalign accordingly. */
- if (tree_int_cst_sgn (step) < 0)
+ tree misalign = drb->init;
+ if (tree_int_cst_sgn (drb->step) < 0)
{
tree offset = ssize_int (TYPE_VECTOR_SUBPARTS (vectype) - 1);
/* DR_STEP(dr) is the same as -TYPE_SIZE of the scalar type,
otherwise we wouldn't be here. */
- offset = fold_build2 (MULT_EXPR, ssizetype, offset, step);
+ offset = fold_build2 (MULT_EXPR, ssizetype, offset, drb->step);
/* PLUS because STEP was negative. */
misalign = size_binop (PLUS_EXPR, misalign, offset);
}
vect_create_addr_base_for_vector_ref (gimple *stmt,
gimple_seq *new_stmt_list,
tree offset,
- struct loop *loop,
tree byte_offset)
{
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
struct data_reference *dr = STMT_VINFO_DATA_REF (stmt_info);
- tree data_ref_base;
const char *base_name;
tree addr_base;
tree dest;
gimple_seq seq = NULL;
- tree base_offset;
- tree init;
tree vect_ptr_type;
tree step = TYPE_SIZE_UNIT (TREE_TYPE (DR_REF (dr)));
loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
+ innermost_loop_behavior *drb = vect_dr_behavior (dr);
- if (loop_vinfo && loop && loop != (gimple_bb (stmt))->loop_father)
- {
- struct loop *outer_loop = LOOP_VINFO_LOOP (loop_vinfo);
-
- gcc_assert (nested_in_vect_loop_p (outer_loop, stmt));
-
- data_ref_base = unshare_expr (STMT_VINFO_DR_BASE_ADDRESS (stmt_info));
- base_offset = unshare_expr (STMT_VINFO_DR_OFFSET (stmt_info));
- init = unshare_expr (STMT_VINFO_DR_INIT (stmt_info));
- }
- else
- {
- data_ref_base = unshare_expr (DR_BASE_ADDRESS (dr));
- base_offset = unshare_expr (DR_OFFSET (dr));
- init = unshare_expr (DR_INIT (dr));
- }
+ tree data_ref_base = unshare_expr (drb->base_address);
+ tree base_offset = unshare_expr (drb->offset);
+ tree init = unshare_expr (drb->init);
if (loop_vinfo)
base_name = get_name (data_ref_base);
/* Check the step (evolution) of the load in LOOP, and record
whether it's invariant. */
- if (nested_in_vect_loop)
- step = STMT_VINFO_DR_STEP (stmt_info);
- else
- step = DR_STEP (STMT_VINFO_DATA_REF (stmt_info));
-
+ step = vect_dr_behavior (dr)->step;
if (integer_zerop (step))
*inv_p = true;
else
/* Create: (&(base[init_val+offset]+byte_offset) in the loop preheader. */
new_temp = vect_create_addr_base_for_vector_ref (stmt, &new_stmt_list,
- offset, loop, byte_offset);
+ offset, byte_offset);
if (new_stmt_list)
{
if (pe)
{
/* Generate the INIT_ADDR computation outside LOOP. */
init_addr = vect_create_addr_base_for_vector_ref (stmt, &stmts,
- NULL_TREE, loop);
+ NULL_TREE);
if (loop)
{
pe = loop_preheader_edge (loop);
basic_block bb, int *bound)
{
struct data_reference *dr = LOOP_VINFO_UNALIGNED_DR (loop_vinfo);
- struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
tree var;
tree niters_type = TREE_TYPE (LOOP_VINFO_NITERS (loop_vinfo));
gimple_seq stmts = NULL, new_stmts = NULL;
tree offset = negative
? size_int (-TYPE_VECTOR_SUBPARTS (vectype) + 1) : size_zero_node;
tree start_addr = vect_create_addr_base_for_vector_ref (dr_stmt,
- &stmts, offset, loop);
+ &stmts, offset);
tree type = unsigned_type_for (TREE_TYPE (start_addr));
tree vectype_align_minus_1 = build_int_cst (type, vectype_align - 1);
HOST_WIDE_INT elem_size =
tree *cond_expr,
gimple_seq *cond_expr_stmt_list)
{
- struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
vec<gimple *> may_misalign_stmts
= LOOP_VINFO_MAY_MISALIGN_STMTS (loop_vinfo);
gimple *ref_stmt;
/* create: addr_tmp = (int)(address_of_first_vector) */
addr_base =
vect_create_addr_base_for_vector_ref (ref_stmt, &new_stmt_list,
- offset, loop);
+ offset);
if (new_stmt_list != NULL)
gimple_seq_add_seq (cond_expr_stmt_list, new_stmt_list);
set_vinfo_for_stmt (pattern_stmt, pattern_stmt_info);
STMT_VINFO_DATA_REF (pattern_stmt_info)
= STMT_VINFO_DATA_REF (stmt_vinfo);
- STMT_VINFO_DR_BASE_ADDRESS (pattern_stmt_info)
- = STMT_VINFO_DR_BASE_ADDRESS (stmt_vinfo);
- STMT_VINFO_DR_INIT (pattern_stmt_info) = STMT_VINFO_DR_INIT (stmt_vinfo);
- STMT_VINFO_DR_OFFSET (pattern_stmt_info)
- = STMT_VINFO_DR_OFFSET (stmt_vinfo);
- STMT_VINFO_DR_STEP (pattern_stmt_info) = STMT_VINFO_DR_STEP (stmt_vinfo);
- STMT_VINFO_DR_ALIGNED_TO (pattern_stmt_info)
- = STMT_VINFO_DR_ALIGNED_TO (stmt_vinfo);
+ STMT_VINFO_DR_WRT_VEC_LOOP (pattern_stmt_info)
+ = STMT_VINFO_DR_WRT_VEC_LOOP (stmt_vinfo);
DR_STMT (STMT_VINFO_DATA_REF (stmt_vinfo)) = pattern_stmt;
*type_out = vectype;
*type_in = vectype;
set_vinfo_for_stmt (pattern_stmt, pattern_stmt_info);
STMT_VINFO_DATA_REF (pattern_stmt_info)
= STMT_VINFO_DATA_REF (stmt_vinfo);
- STMT_VINFO_DR_BASE_ADDRESS (pattern_stmt_info)
- = STMT_VINFO_DR_BASE_ADDRESS (stmt_vinfo);
- STMT_VINFO_DR_INIT (pattern_stmt_info) = STMT_VINFO_DR_INIT (stmt_vinfo);
- STMT_VINFO_DR_OFFSET (pattern_stmt_info)
- = STMT_VINFO_DR_OFFSET (stmt_vinfo);
- STMT_VINFO_DR_STEP (pattern_stmt_info) = STMT_VINFO_DR_STEP (stmt_vinfo);
- STMT_VINFO_DR_ALIGNED_TO (pattern_stmt_info)
- = STMT_VINFO_DR_ALIGNED_TO (stmt_vinfo);
+ STMT_VINFO_DR_WRT_VEC_LOOP (pattern_stmt_info)
+ = STMT_VINFO_DR_WRT_VEC_LOOP (stmt_vinfo);
DR_STMT (STMT_VINFO_DATA_REF (stmt_vinfo)) = pattern_stmt;
*type_out = vectype1;
compare_step_with_zero (gimple *stmt)
{
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
- loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
- tree step;
- if (loop_vinfo && nested_in_vect_loop_p (LOOP_VINFO_LOOP (loop_vinfo), stmt))
- step = STMT_VINFO_DR_STEP (stmt_info);
- else
- step = DR_STEP (STMT_VINFO_DATA_REF (stmt_info));
- return tree_int_cst_compare (step, size_zero_node);
+ data_reference *dr = STMT_VINFO_DATA_REF (stmt_info);
+ return tree_int_cst_compare (vect_dr_behavior (dr)->step,
+ size_zero_node);
}
/* If the target supports a permute mask that reverses the elements in
STMT_VINFO_VEC_REDUCTION_TYPE (res) = TREE_CODE_REDUCTION;
STMT_VINFO_VEC_CONST_COND_REDUC_CODE (res) = ERROR_MARK;
- STMT_VINFO_DR_BASE_ADDRESS (res) = NULL;
- STMT_VINFO_DR_OFFSET (res) = NULL;
- STMT_VINFO_DR_INIT (res) = NULL;
- STMT_VINFO_DR_STEP (res) = NULL;
- STMT_VINFO_DR_ALIGNED_TO (res) = NULL;
-
if (gimple_code (stmt) == GIMPLE_PHI
&& is_loop_header_bb_p (gimple_bb (stmt)))
STMT_VINFO_DEF_TYPE (res) = vect_unknown_def_type;
/* Information about the data-ref relative to this loop
nest (the loop that is being considered for vectorization). */
- tree dr_base_address;
- tree dr_init;
- tree dr_offset;
- tree dr_step;
- tree dr_aligned_to;
+ innermost_loop_behavior dr_wrt_vec_loop;
/* For loop PHI nodes, the base and evolution part of it. This makes sure
this information is still available in vect_update_ivs_after_vectorizer
#define STMT_VINFO_VEC_REDUCTION_TYPE(S) (S)->v_reduc_type
#define STMT_VINFO_VEC_CONST_COND_REDUC_CODE(S) (S)->const_cond_reduc_code
-#define STMT_VINFO_DR_BASE_ADDRESS(S) (S)->dr_base_address
-#define STMT_VINFO_DR_INIT(S) (S)->dr_init
-#define STMT_VINFO_DR_OFFSET(S) (S)->dr_offset
-#define STMT_VINFO_DR_STEP(S) (S)->dr_step
-#define STMT_VINFO_DR_ALIGNED_TO(S) (S)->dr_aligned_to
+#define STMT_VINFO_DR_WRT_VEC_LOOP(S) (S)->dr_wrt_vec_loop
+#define STMT_VINFO_DR_BASE_ADDRESS(S) (S)->dr_wrt_vec_loop.base_address
+#define STMT_VINFO_DR_INIT(S) (S)->dr_wrt_vec_loop.init
+#define STMT_VINFO_DR_OFFSET(S) (S)->dr_wrt_vec_loop.offset
+#define STMT_VINFO_DR_STEP(S) (S)->dr_wrt_vec_loop.step
+#define STMT_VINFO_DR_ALIGNED_TO(S) (S)->dr_wrt_vec_loop.aligned_to
#define STMT_VINFO_IN_PATTERN_P(S) (S)->in_pattern_p
#define STMT_VINFO_RELATED_STMT(S) (S)->related_stmt
return (DR_MISALIGNMENT (data_ref_info) != DR_MISALIGNMENT_UNKNOWN);
}
+/* 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). */
+
+static inline innermost_loop_behavior *
+vect_dr_behavior (data_reference *dr)
+{
+ gimple *stmt = DR_STMT (dr);
+ stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
+ loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
+ if (loop_vinfo == NULL
+ || !nested_in_vect_loop_p (LOOP_VINFO_LOOP (loop_vinfo), stmt))
+ return &DR_INNERMOST (dr);
+ else
+ return &STMT_VINFO_DR_WRT_VEC_LOOP (stmt_info);
+}
/* Return true if the vect cost model is unlimited. */
static inline bool
extern tree vect_get_new_ssa_name (tree, enum vect_var_kind,
const char * = NULL);
extern tree vect_create_addr_base_for_vector_ref (gimple *, gimple_seq *,
- tree, struct loop *,
- tree = NULL_TREE);
+ tree, tree = NULL_TREE);
/* In tree-vect-loop.c. */
/* FORNOW: Used in tree-parloops.c. */
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