/* Vectorizer
- Copyright (C) 2003-2013 Free Software Foundation, Inc.
+ Copyright (C) 2003-2015 Free Software Foundation, Inc.
Contributed by Dorit Naishlos <dorit@il.ibm.com>
This file is part of GCC.
#include "coretypes.h"
#include "dumpfile.h"
#include "tm.h"
-#include "ggc.h"
+#include "alias.h"
+#include "symtab.h"
#include "tree.h"
+#include "fold-const.h"
+#include "stor-layout.h"
#include "tree-pretty-print.h"
+#include "predict.h"
+#include "hard-reg-set.h"
+#include "function.h"
+#include "dominance.h"
+#include "cfg.h"
+#include "basic-block.h"
+#include "tree-ssa-alias.h"
+#include "internal-fn.h"
+#include "gimple-expr.h"
#include "gimple.h"
#include "gimple-iterator.h"
#include "gimple-walk.h"
#include "tree-phinodes.h"
#include "ssa-iterators.h"
#include "tree-ssa-loop-manip.h"
+#include "tree-cfg.h"
#include "cfgloop.h"
#include "tree-vectorizer.h"
#include "tree-pass.h"
-#include "hash-table.h"
#include "tree-ssa-propagate.h"
#include "dbgcnt.h"
+#include "gimple-fold.h"
+#include "tree-scalar-evolution.h"
+
/* Loop or bb location. */
-LOC vect_location;
+source_location vect_location;
/* Vector mapping GIMPLE stmt to stmt_vec_info. */
vec<vec_void_p> stmt_vec_info_vec;
\f
/* For mapping simduid to vectorization factor. */
-struct simduid_to_vf : typed_free_remove<simduid_to_vf>
+struct simduid_to_vf : free_ptr_hash<simduid_to_vf>
{
unsigned int simduid;
int vf;
/* hash_table support. */
- typedef simduid_to_vf value_type;
- typedef simduid_to_vf compare_type;
- static inline hashval_t hash (const value_type *);
- static inline int equal (const value_type *, const compare_type *);
+ static inline hashval_t hash (const simduid_to_vf *);
+ static inline int equal (const simduid_to_vf *, const simduid_to_vf *);
};
inline hashval_t
-simduid_to_vf::hash (const value_type *p)
+simduid_to_vf::hash (const simduid_to_vf *p)
{
return p->simduid;
}
inline int
-simduid_to_vf::equal (const value_type *p1, const value_type *p2)
+simduid_to_vf::equal (const simduid_to_vf *p1, const simduid_to_vf *p2)
{
return p1->simduid == p2->simduid;
}
This hash maps from the OMP simd array (D.1737[]) to DECL_UID of
simduid.0. */
-struct simd_array_to_simduid : typed_free_remove<simd_array_to_simduid>
+struct simd_array_to_simduid : free_ptr_hash<simd_array_to_simduid>
{
tree decl;
unsigned int simduid;
/* hash_table support. */
- typedef simd_array_to_simduid value_type;
- typedef simd_array_to_simduid compare_type;
- static inline hashval_t hash (const value_type *);
- static inline int equal (const value_type *, const compare_type *);
+ static inline hashval_t hash (const simd_array_to_simduid *);
+ static inline int equal (const simd_array_to_simduid *,
+ const simd_array_to_simduid *);
};
inline hashval_t
-simd_array_to_simduid::hash (const value_type *p)
+simd_array_to_simduid::hash (const simd_array_to_simduid *p)
{
return DECL_UID (p->decl);
}
inline int
-simd_array_to_simduid::equal (const value_type *p1, const value_type *p2)
+simd_array_to_simduid::equal (const simd_array_to_simduid *p1,
+ const simd_array_to_simduid *p2)
{
return p1->decl == p2->decl;
}
into their corresponding constants. */
static void
-adjust_simduid_builtins (hash_table <simduid_to_vf> &htab)
+adjust_simduid_builtins (hash_table<simduid_to_vf> *htab)
{
basic_block bb;
- FOR_EACH_BB (bb)
+ FOR_EACH_BB_FN (bb, cfun)
{
gimple_stmt_iterator i;
gcc_assert (TREE_CODE (arg) == SSA_NAME);
simduid_to_vf *p = NULL, data;
data.simduid = DECL_UID (SSA_NAME_VAR (arg));
- if (htab.is_created ())
- p = htab.find (&data);
- if (p)
- vf = p->vf;
+ if (htab)
+ {
+ p = htab->find (&data);
+ if (p)
+ vf = p->vf;
+ }
switch (ifn)
{
case IFN_GOMP_SIMD_VF:
struct note_simd_array_uses_struct
{
- hash_table <simd_array_to_simduid> *htab;
+ hash_table<simd_array_to_simduid> **htab;
unsigned int simduid;
};
&& DECL_CONTEXT (*tp) == current_function_decl)
{
simd_array_to_simduid data;
- if (!ns->htab->is_created ())
- ns->htab->create (15);
+ if (!*ns->htab)
+ *ns->htab = new hash_table<simd_array_to_simduid> (15);
data.decl = *tp;
data.simduid = ns->simduid;
- simd_array_to_simduid **slot = ns->htab->find_slot (&data, INSERT);
+ simd_array_to_simduid **slot = (*ns->htab)->find_slot (&data, INSERT);
if (*slot == NULL)
{
simd_array_to_simduid *p = XNEW (simd_array_to_simduid);
simduid. */
static void
-note_simd_array_uses (hash_table <simd_array_to_simduid> *htab)
+note_simd_array_uses (hash_table<simd_array_to_simduid> **htab)
{
basic_block bb;
gimple_stmt_iterator gsi;
wi.info = &ns;
ns.htab = htab;
- FOR_EACH_BB (bb)
+ FOR_EACH_BB_FN (bb, cfun)
for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
{
gimple stmt = gsi_stmt (gsi);
walk_gimple_op (use_stmt, note_simd_array_uses_cb, &wi);
}
}
+
+/* Shrink arrays with "omp simd array" attribute to the corresponding
+ vectorization factor. */
+
+static void
+shrink_simd_arrays
+ (hash_table<simd_array_to_simduid> *simd_array_to_simduid_htab,
+ hash_table<simduid_to_vf> *simduid_to_vf_htab)
+{
+ for (hash_table<simd_array_to_simduid>::iterator iter
+ = simd_array_to_simduid_htab->begin ();
+ iter != simd_array_to_simduid_htab->end (); ++iter)
+ if ((*iter)->simduid != -1U)
+ {
+ tree decl = (*iter)->decl;
+ int vf = 1;
+ if (simduid_to_vf_htab)
+ {
+ simduid_to_vf *p = NULL, data;
+ data.simduid = (*iter)->simduid;
+ p = simduid_to_vf_htab->find (&data);
+ if (p)
+ vf = p->vf;
+ }
+ tree atype
+ = build_array_type_nelts (TREE_TYPE (TREE_TYPE (decl)), vf);
+ TREE_TYPE (decl) = atype;
+ relayout_decl (decl);
+ }
+
+ delete simd_array_to_simduid_htab;
+}
\f
/* A helper function to free data refs. */
}
+/* If LOOP has been versioned during ifcvt, return the internal call
+ guarding it. */
+
+static gimple
+vect_loop_vectorized_call (struct loop *loop)
+{
+ basic_block bb = loop_preheader_edge (loop)->src;
+ gimple g;
+ do
+ {
+ g = last_stmt (bb);
+ if (g)
+ break;
+ if (!single_pred_p (bb))
+ break;
+ bb = single_pred (bb);
+ }
+ while (1);
+ if (g && gimple_code (g) == GIMPLE_COND)
+ {
+ gimple_stmt_iterator gsi = gsi_for_stmt (g);
+ gsi_prev (&gsi);
+ if (!gsi_end_p (gsi))
+ {
+ g = gsi_stmt (gsi);
+ if (is_gimple_call (g)
+ && gimple_call_internal_p (g)
+ && gimple_call_internal_fn (g) == IFN_LOOP_VECTORIZED
+ && (tree_to_shwi (gimple_call_arg (g, 0)) == loop->num
+ || tree_to_shwi (gimple_call_arg (g, 1)) == loop->num))
+ return g;
+ }
+ }
+ return NULL;
+}
+
+/* Fold LOOP_VECTORIZED internal call G to VALUE and
+ update any immediate uses of it's LHS. */
+
+static void
+fold_loop_vectorized_call (gimple g, tree value)
+{
+ tree lhs = gimple_call_lhs (g);
+ use_operand_p use_p;
+ imm_use_iterator iter;
+ gimple use_stmt;
+ gimple_stmt_iterator gsi = gsi_for_stmt (g);
+
+ update_call_from_tree (&gsi, value);
+ FOR_EACH_IMM_USE_STMT (use_stmt, iter, lhs)
+ {
+ FOR_EACH_IMM_USE_ON_STMT (use_p, iter)
+ SET_USE (use_p, value);
+ update_stmt (use_stmt);
+ }
+}
+/* Set the uids of all the statements in basic blocks inside loop
+ represented by LOOP_VINFO. LOOP_VECTORIZED_CALL is the internal
+ call guarding the loop which has been if converted. */
+static void
+set_uid_loop_bbs (loop_vec_info loop_vinfo, gimple loop_vectorized_call)
+{
+ tree arg = gimple_call_arg (loop_vectorized_call, 1);
+ basic_block *bbs;
+ unsigned int i;
+ struct loop *scalar_loop = get_loop (cfun, tree_to_shwi (arg));
+
+ LOOP_VINFO_SCALAR_LOOP (loop_vinfo) = scalar_loop;
+ gcc_checking_assert (vect_loop_vectorized_call
+ (LOOP_VINFO_SCALAR_LOOP (loop_vinfo))
+ == loop_vectorized_call);
+ bbs = get_loop_body (scalar_loop);
+ for (i = 0; i < scalar_loop->num_nodes; i++)
+ {
+ basic_block bb = bbs[i];
+ gimple_stmt_iterator gsi;
+ for (gsi = gsi_start_phis (bb); !gsi_end_p (gsi); gsi_next (&gsi))
+ {
+ gimple phi = gsi_stmt (gsi);
+ gimple_set_uid (phi, 0);
+ }
+ for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
+ {
+ gimple stmt = gsi_stmt (gsi);
+ gimple_set_uid (stmt, 0);
+ }
+ }
+ free (bbs);
+}
+
/* Function vectorize_loops.
Entry point to loop vectorization phase. */
unsigned int i;
unsigned int num_vectorized_loops = 0;
unsigned int vect_loops_num;
- loop_iterator li;
struct loop *loop;
- hash_table <simduid_to_vf> simduid_to_vf_htab;
- hash_table <simd_array_to_simduid> simd_array_to_simduid_htab;
+ hash_table<simduid_to_vf> *simduid_to_vf_htab = NULL;
+ hash_table<simd_array_to_simduid> *simd_array_to_simduid_htab = NULL;
+ bool any_ifcvt_loops = false;
+ unsigned ret = 0;
vect_loops_num = number_of_loops (cfun);
/* Bail out if there are no loops. */
if (vect_loops_num <= 1)
- {
- if (cfun->has_simduid_loops)
- adjust_simduid_builtins (simduid_to_vf_htab);
- return 0;
- }
+ return 0;
if (cfun->has_simduid_loops)
note_simd_array_uses (&simd_array_to_simduid_htab);
/* If some loop was duplicated, it gets bigger number
than all previously defined loops. This fact allows us to run
only over initial loops skipping newly generated ones. */
- FOR_EACH_LOOP (li, loop, 0)
- if ((flag_tree_loop_vectorize && optimize_loop_nest_for_speed_p (loop))
- || loop->force_vect)
+ FOR_EACH_LOOP (loop, 0)
+ if (loop->dont_vectorize)
+ any_ifcvt_loops = true;
+ else if ((flag_tree_loop_vectorize
+ && optimize_loop_nest_for_speed_p (loop))
+ || loop->force_vectorize)
{
loop_vec_info loop_vinfo;
vect_location = find_loop_location (loop);
- if (LOCATION_LOCUS (vect_location) != UNKNOWN_LOC
+ if (LOCATION_LOCUS (vect_location) != UNKNOWN_LOCATION
&& dump_enabled_p ())
dump_printf (MSG_NOTE, "\nAnalyzing loop at %s:%d\n",
- LOC_FILE (vect_location), LOC_LINE (vect_location));
+ LOCATION_FILE (vect_location),
+ LOCATION_LINE (vect_location));
loop_vinfo = vect_analyze_loop (loop);
loop->aux = loop_vinfo;
if (!dbg_cnt (vect_loop))
break;
- if (LOCATION_LOCUS (vect_location) != UNKNOWN_LOC
+ gimple loop_vectorized_call = vect_loop_vectorized_call (loop);
+ if (loop_vectorized_call)
+ set_uid_loop_bbs (loop_vinfo, loop_vectorized_call);
+ if (LOCATION_LOCUS (vect_location) != UNKNOWN_LOCATION
&& dump_enabled_p ())
dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, vect_location,
"loop vectorized\n");
num_vectorized_loops++;
/* Now that the loop has been vectorized, allow it to be unrolled
etc. */
- loop->force_vect = false;
+ loop->force_vectorize = false;
if (loop->simduid)
{
simduid_to_vf *simduid_to_vf_data = XNEW (simduid_to_vf);
- if (!simduid_to_vf_htab.is_created ())
- simduid_to_vf_htab.create (15);
+ if (!simduid_to_vf_htab)
+ simduid_to_vf_htab = new hash_table<simduid_to_vf> (15);
simduid_to_vf_data->simduid = DECL_UID (loop->simduid);
simduid_to_vf_data->vf = loop_vinfo->vectorization_factor;
- *simduid_to_vf_htab.find_slot (simduid_to_vf_data, INSERT)
+ *simduid_to_vf_htab->find_slot (simduid_to_vf_data, INSERT)
= simduid_to_vf_data;
}
+
+ if (loop_vectorized_call)
+ {
+ fold_loop_vectorized_call (loop_vectorized_call, boolean_true_node);
+ ret |= TODO_cleanup_cfg;
+ }
}
- vect_location = UNKNOWN_LOC;
+ vect_location = UNKNOWN_LOCATION;
statistics_counter_event (cfun, "Vectorized loops", num_vectorized_loops);
if (dump_enabled_p ()
/* ----------- Finalize. ----------- */
+ if (any_ifcvt_loops)
+ for (i = 1; i < vect_loops_num; i++)
+ {
+ loop = get_loop (cfun, i);
+ if (loop && loop->dont_vectorize)
+ {
+ gimple g = vect_loop_vectorized_call (loop);
+ if (g)
+ {
+ fold_loop_vectorized_call (g, boolean_false_node);
+ ret |= TODO_cleanup_cfg;
+ }
+ }
+ }
+
for (i = 1; i < vect_loops_num; i++)
{
loop_vec_info loop_vinfo;
/* Shrink any "omp array simd" temporary arrays to the
actual vectorization factors. */
- if (simd_array_to_simduid_htab.is_created ())
- {
- for (hash_table <simd_array_to_simduid>::iterator iter
- = simd_array_to_simduid_htab.begin ();
- iter != simd_array_to_simduid_htab.end (); ++iter)
- if ((*iter).simduid != -1U)
- {
- tree decl = (*iter).decl;
- int vf = 1;
- if (simduid_to_vf_htab.is_created ())
- {
- simduid_to_vf *p = NULL, data;
- data.simduid = (*iter).simduid;
- p = simduid_to_vf_htab.find (&data);
- if (p)
- vf = p->vf;
- }
- tree atype
- = build_array_type_nelts (TREE_TYPE (TREE_TYPE (decl)), vf);
- TREE_TYPE (decl) = atype;
- relayout_decl (decl);
- }
-
- simd_array_to_simduid_htab.dispose ();
- }
- if (simduid_to_vf_htab.is_created ())
- simduid_to_vf_htab.dispose ();
+ if (simd_array_to_simduid_htab)
+ shrink_simd_arrays (simd_array_to_simduid_htab, simduid_to_vf_htab);
+ delete simduid_to_vf_htab;
+ cfun->has_simduid_loops = false;
if (num_vectorized_loops > 0)
{
return TODO_cleanup_cfg;
}
- return 0;
+ return ret;
}
-/* Entry point to basic block SLP phase. */
+/* Entry point to the simduid cleanup pass. */
-static unsigned int
-execute_vect_slp (void)
+namespace {
+
+const pass_data pass_data_simduid_cleanup =
{
- basic_block bb;
+ GIMPLE_PASS, /* type */
+ "simduid", /* name */
+ OPTGROUP_NONE, /* optinfo_flags */
+ TV_NONE, /* tv_id */
+ ( PROP_ssa | PROP_cfg ), /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ 0, /* todo_flags_finish */
+};
- init_stmt_vec_info_vec ();
+class pass_simduid_cleanup : public gimple_opt_pass
+{
+public:
+ pass_simduid_cleanup (gcc::context *ctxt)
+ : gimple_opt_pass (pass_data_simduid_cleanup, ctxt)
+ {}
- FOR_EACH_BB (bb)
- {
- vect_location = find_bb_location (bb);
+ /* opt_pass methods: */
+ opt_pass * clone () { return new pass_simduid_cleanup (m_ctxt); }
+ virtual bool gate (function *fun) { return fun->has_simduid_loops; }
+ virtual unsigned int execute (function *);
- if (vect_slp_analyze_bb (bb))
- {
- if (!dbg_cnt (vect_slp))
- break;
+}; // class pass_simduid_cleanup
- vect_slp_transform_bb (bb);
- if (dump_enabled_p ())
- dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, vect_location,
- "basic block vectorized\n");
- }
- }
+unsigned int
+pass_simduid_cleanup::execute (function *fun)
+{
+ hash_table<simd_array_to_simduid> *simd_array_to_simduid_htab = NULL;
- free_stmt_vec_info_vec ();
+ note_simd_array_uses (&simd_array_to_simduid_htab);
+
+ /* Fold IFN_GOMP_SIMD_{VF,LANE,LAST_LANE} builtins. */
+ adjust_simduid_builtins (NULL);
+
+ /* Shrink any "omp array simd" temporary arrays to the
+ actual vectorization factors. */
+ if (simd_array_to_simduid_htab)
+ shrink_simd_arrays (simd_array_to_simduid_htab, NULL);
+ fun->has_simduid_loops = false;
return 0;
}
-static bool
-gate_vect_slp (void)
+} // anon namespace
+
+gimple_opt_pass *
+make_pass_simduid_cleanup (gcc::context *ctxt)
{
- return flag_tree_slp_vectorize != 0;
+ return new pass_simduid_cleanup (ctxt);
}
+
+/* Entry point to basic block SLP phase. */
+
namespace {
const pass_data pass_data_slp_vectorize =
GIMPLE_PASS, /* type */
"slp", /* name */
OPTGROUP_LOOP | OPTGROUP_VEC, /* optinfo_flags */
- true, /* has_gate */
- true, /* has_execute */
TV_TREE_SLP_VECTORIZATION, /* tv_id */
( PROP_ssa | PROP_cfg ), /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
- ( TODO_verify_ssa | TODO_update_ssa
- | TODO_verify_stmts ), /* todo_flags_finish */
+ TODO_update_ssa, /* todo_flags_finish */
};
class pass_slp_vectorize : public gimple_opt_pass
{}
/* opt_pass methods: */
- bool gate () { return gate_vect_slp (); }
- unsigned int execute () { return execute_vect_slp (); }
+ opt_pass * clone () { return new pass_slp_vectorize (m_ctxt); }
+ virtual bool gate (function *) { return flag_tree_slp_vectorize != 0; }
+ virtual unsigned int execute (function *);
}; // class pass_slp_vectorize
+unsigned int
+pass_slp_vectorize::execute (function *fun)
+{
+ basic_block bb;
+
+ bool in_loop_pipeline = scev_initialized_p ();
+ if (!in_loop_pipeline)
+ {
+ loop_optimizer_init (LOOPS_NORMAL);
+ scev_initialize ();
+ }
+
+ init_stmt_vec_info_vec ();
+
+ FOR_EACH_BB_FN (bb, fun)
+ {
+ vect_location = find_bb_location (bb);
+
+ if (vect_slp_analyze_bb (bb))
+ {
+ if (!dbg_cnt (vect_slp))
+ break;
+
+ vect_slp_transform_bb (bb);
+ if (dump_enabled_p ())
+ dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, vect_location,
+ "basic block vectorized\n");
+ }
+ }
+
+ free_stmt_vec_info_vec ();
+
+ if (!in_loop_pipeline)
+ {
+ scev_finalize ();
+ loop_optimizer_finalize ();
+ }
+
+ return 0;
+}
+
} // anon namespace
gimple_opt_pass *
static unsigned int
increase_alignment (void)
{
- struct varpool_node *vnode;
+ varpool_node *vnode;
- vect_location = UNKNOWN_LOC;
+ vect_location = UNKNOWN_LOCATION;
/* Increase the alignment of all global arrays for vectorization. */
FOR_EACH_DEFINED_VARIABLE (vnode)
if (vect_can_force_dr_alignment_p (decl, alignment))
{
- DECL_ALIGN (decl) = TYPE_ALIGN (vectype);
- DECL_USER_ALIGN (decl) = 1;
+ vnode->increase_alignment (TYPE_ALIGN (vectype));
dump_printf (MSG_NOTE, "Increasing alignment of decl: ");
dump_generic_expr (MSG_NOTE, TDF_SLIM, decl);
dump_printf (MSG_NOTE, "\n");
}
-static bool
-gate_increase_alignment (void)
-{
- return flag_section_anchors && flag_tree_loop_vectorize;
-}
-
-
namespace {
const pass_data pass_data_ipa_increase_alignment =
SIMPLE_IPA_PASS, /* type */
"increase_alignment", /* name */
OPTGROUP_LOOP | OPTGROUP_VEC, /* optinfo_flags */
- true, /* has_gate */
- true, /* has_execute */
TV_IPA_OPT, /* tv_id */
0, /* properties_required */
0, /* properties_provided */
{}
/* opt_pass methods: */
- bool gate () { return gate_increase_alignment (); }
- unsigned int execute () { return increase_alignment (); }
+ virtual bool gate (function *)
+ {
+ return flag_section_anchors && flag_tree_loop_vectorize;
+ }
+
+ virtual unsigned int execute (function *) { return increase_alignment (); }
}; // class pass_ipa_increase_alignment
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