/* Vectorizer
- Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software
- Foundation, Inc.
- Contributed by Dorit Naishlos <dorit@il.ibm.com>
+ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
+ Contributed by Dorit Naishlos <dorit@il.ibm.com>
This file is part of GCC.
/* Loop and basic block vectorizer.
- This file contains drivers for the three vectorizers:
- (1) loop vectorizer (inter-iteration parallelism),
+ This file contains drivers for the three vectorizers:
+ (1) loop vectorizer (inter-iteration parallelism),
(2) loop-aware SLP (intra-iteration parallelism) (invoked by the loop
vectorizer)
(3) BB vectorizer (out-of-loops), aka SLP
-
+
The rest of the vectorizer's code is organized as follows:
- - tree-vect-loop.c - loop specific parts such as reductions, etc. These are
- used by drivers (1) and (2).
- - tree-vect-loop-manip.c - vectorizer's loop control-flow utilities, used by
- drivers (1) and (2).
- - tree-vect-slp.c - BB vectorization specific analysis and transformation,
+ - tree-vect-loop.c - loop specific parts such as reductions, etc. These are
+ used by drivers (1) and (2).
+ - tree-vect-loop-manip.c - vectorizer's loop control-flow utilities, used by
+ drivers (1) and (2).
+ - tree-vect-slp.c - BB vectorization specific analysis and transformation,
used by drivers (2) and (3).
- tree-vect-stmts.c - statements analysis and transformation (used by all).
- - tree-vect-data-refs.c - vectorizer specific data-refs analysis and
+ - tree-vect-data-refs.c - vectorizer specific data-refs analysis and
manipulations (used by all).
- tree-vect-patterns.c - vectorizable code patterns detector (used by all)
#include "tm.h"
#include "ggc.h"
#include "tree.h"
-#include "diagnostic.h"
+#include "tree-pretty-print.h"
#include "tree-flow.h"
#include "tree-dump.h"
#include "cfgloop.h"
#include "cfglayout.h"
#include "tree-vectorizer.h"
#include "tree-pass.h"
+#include "timevar.h"
/* vect_dump will be set to stderr or dump_file if exist. */
FILE *vect_dump;
-/* vect_verbosity_level set to an invalid value
+/* vect_verbosity_level set to an invalid value
to mark that it's uninitialized. */
-enum verbosity_levels vect_verbosity_level = MAX_VERBOSITY_LEVEL;
-
-/* Loop location. */
-LOC vect_loop_location;
+static enum vect_verbosity_levels vect_verbosity_level = MAX_VERBOSITY_LEVEL;
-/* Bitmap of virtual variables to be renamed. */
-bitmap vect_memsyms_to_rename;
+/* Loop or bb location. */
+LOC vect_location;
/* Vector mapping GIMPLE stmt to stmt_vec_info. */
VEC(vec_void_p,heap) *stmt_vec_info_vec;
\f
-/* Function vect_set_verbosity_level.
-
- Called from toplev.c upon detection of the
- -ftree-vectorizer-verbose=N option. */
-
-void
-vect_set_verbosity_level (const char *val)
-{
- unsigned int vl;
-
- vl = atoi (val);
- if (vl < MAX_VERBOSITY_LEVEL)
- vect_verbosity_level = vl;
- else
- vect_verbosity_level = MAX_VERBOSITY_LEVEL - 1;
-}
-
-
/* Function vect_set_dump_settings.
Fix the verbosity level of the vectorizer if the
print to stderr, otherwise print to the dump file. */
static void
-vect_set_dump_settings (void)
+vect_set_dump_settings (bool slp)
{
vect_dump = dump_file;
/* Check if the verbosity level was defined by the user: */
- if (vect_verbosity_level != MAX_VERBOSITY_LEVEL)
+ if (user_vect_verbosity_level != MAX_VERBOSITY_LEVEL)
{
- /* If there is no dump file, print to stderr. */
- if (!dump_file)
- vect_dump = stderr;
- return;
+ vect_verbosity_level = user_vect_verbosity_level;
+ /* Ignore user defined verbosity if dump flags require higher level of
+ verbosity. */
+ if (dump_file)
+ {
+ if (((dump_flags & TDF_DETAILS)
+ && vect_verbosity_level >= REPORT_DETAILS)
+ || ((dump_flags & TDF_STATS)
+ && vect_verbosity_level >= REPORT_UNVECTORIZED_LOCATIONS))
+ return;
+ }
+ else
+ {
+ /* If there is no dump file, print to stderr in case of loop
+ vectorization. */
+ if (!slp)
+ vect_dump = stderr;
+
+ return;
+ }
}
/* User didn't specify verbosity level: */
if (dump_file && (dump_flags & TDF_DETAILS))
vect_verbosity_level = REPORT_DETAILS;
else if (dump_file && (dump_flags & TDF_STATS))
- vect_verbosity_level = REPORT_UNVECTORIZED_LOOPS;
+ vect_verbosity_level = REPORT_UNVECTORIZED_LOCATIONS;
else
vect_verbosity_level = REPORT_NONE;
For vectorization debug dumps. */
bool
-vect_print_dump_info (enum verbosity_levels vl)
+vect_print_dump_info (enum vect_verbosity_levels vl)
{
if (vl > vect_verbosity_level)
return false;
if (!current_function_decl || !vect_dump)
return false;
- if (vect_loop_location == UNKNOWN_LOC)
+ if (vect_location == UNKNOWN_LOC)
fprintf (vect_dump, "\n%s:%d: note: ",
DECL_SOURCE_FILE (current_function_decl),
DECL_SOURCE_LINE (current_function_decl));
else
- fprintf (vect_dump, "\n%s:%d: note: ",
- LOC_FILE (vect_loop_location), LOC_LINE (vect_loop_location));
+ fprintf (vect_dump, "\n%d: ", LOC_LINE (vect_location));
return true;
}
/* Function vectorize_loops.
-
- Entry Point to loop vectorization phase. */
+
+ Entry point to loop vectorization phase. */
unsigned
vectorize_loops (void)
return 0;
/* Fix the verbosity level if not defined explicitly by the user. */
- vect_set_dump_settings ();
-
- /* Allocate the bitmap that records which virtual variables that
- need to be renamed. */
- vect_memsyms_to_rename = BITMAP_ALLOC (NULL);
+ vect_set_dump_settings (false);
init_stmt_vec_info_vec ();
/* ----------- Analyze loops. ----------- */
- /* If some loop was duplicated, it gets bigger number
- than all previously defined loops. This fact allows us to run
+ /* 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 (optimize_loop_nest_for_speed_p (loop))
{
loop_vec_info loop_vinfo;
- vect_loop_location = find_loop_location (loop);
+ vect_location = find_loop_location (loop);
+ if (vect_location != UNKNOWN_LOC
+ && vect_verbosity_level > REPORT_NONE)
+ fprintf (vect_dump, "\nAnalyzing loop at %s:%d\n",
+ LOC_FILE (vect_location), LOC_LINE (vect_location));
+
loop_vinfo = vect_analyze_loop (loop);
loop->aux = loop_vinfo;
if (!loop_vinfo || !LOOP_VINFO_VECTORIZABLE_P (loop_vinfo))
continue;
+ if (vect_location != UNKNOWN_LOC
+ && vect_verbosity_level > REPORT_NONE)
+ fprintf (vect_dump, "\n\nVectorizing loop at %s:%d\n",
+ LOC_FILE (vect_location), LOC_LINE (vect_location));
+
vect_transform_loop (loop_vinfo);
num_vectorized_loops++;
}
- vect_loop_location = UNKNOWN_LOC;
+
+ vect_location = UNKNOWN_LOC;
statistics_counter_event (cfun, "Vectorized loops", num_vectorized_loops);
- if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS)
- || (vect_print_dump_info (REPORT_VECTORIZED_LOOPS)
- && num_vectorized_loops > 0))
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS)
+ || (num_vectorized_loops > 0
+ && vect_print_dump_info (REPORT_VECTORIZED_LOCATIONS)))
fprintf (vect_dump, "vectorized %u loops in function.\n",
num_vectorized_loops);
/* ----------- Finalize. ----------- */
- BITMAP_FREE (vect_memsyms_to_rename);
+ mark_sym_for_renaming (gimple_vop (cfun));
for (i = 1; i < vect_loops_num; i++)
{
return num_vectorized_loops > 0 ? TODO_cleanup_cfg : 0;
}
-
+
+
+/* Entry point to basic block SLP phase. */
+
+static unsigned int
+execute_vect_slp (void)
+{
+ basic_block bb;
+
+ /* Fix the verbosity level if not defined explicitly by the user. */
+ vect_set_dump_settings (true);
+
+ init_stmt_vec_info_vec ();
+
+ FOR_EACH_BB (bb)
+ {
+ vect_location = find_bb_location (bb);
+
+ if (vect_slp_analyze_bb (bb))
+ {
+ vect_slp_transform_bb (bb);
+
+ if (vect_print_dump_info (REPORT_VECTORIZED_LOCATIONS))
+ fprintf (vect_dump, "basic block vectorized using SLP\n");
+ }
+ }
+
+ free_stmt_vec_info_vec ();
+ return 0;
+}
+
+static bool
+gate_vect_slp (void)
+{
+ /* Apply SLP either if the vectorizer is on and the user didn't specify
+ whether to run SLP or not, or if the SLP flag was set by the user. */
+ return ((flag_tree_vectorize != 0 && flag_tree_slp_vectorize != 0)
+ || flag_tree_slp_vectorize == 1);
+}
+
+struct gimple_opt_pass pass_slp_vectorize =
+{
+ {
+ GIMPLE_PASS,
+ "slp", /* name */
+ gate_vect_slp, /* gate */
+ execute_vect_slp, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ TV_TREE_SLP_VECTORIZATION, /* tv_id */
+ PROP_ssa | PROP_cfg, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ TODO_ggc_collect
+ | TODO_verify_ssa
+ | TODO_update_ssa
+ | TODO_verify_stmts /* todo_flags_finish */
+ }
+};
+
/* Increase alignment of global arrays to improve vectorization potential.
TODO:
vnode = vnode->next_needed)
{
tree vectype, decl = vnode->decl;
+ tree t;
unsigned int alignment;
- if (TREE_CODE (TREE_TYPE (decl)) != ARRAY_TYPE)
+ t = TREE_TYPE(decl);
+ if (TREE_CODE (t) != ARRAY_TYPE)
continue;
- vectype = get_vectype_for_scalar_type (TREE_TYPE (TREE_TYPE (decl)));
+ vectype = get_vectype_for_scalar_type (strip_array_types (t));
if (!vectype)
continue;
alignment = TYPE_ALIGN (vectype);
{
fprintf (dump_file, "Increasing alignment of decl: ");
print_generic_expr (dump_file, decl, TDF_SLIM);
+ fprintf (dump_file, "\n");
}
}
}
NULL, /* sub */
NULL, /* next */
0, /* static_pass_number */
- 0, /* tv_id */
+ TV_IPA_OPT, /* tv_id */
0, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0 /* todo_flags_finish */
}
};
-
-
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