/* Scalar Replacement of Aggregates (SRA) converts some structure
references into scalar references, exposing them to the scalar
optimizers.
- Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
Contributed by Diego Novillo <dnovillo@redhat.com>
This file is part of GCC.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
-#include "errors.h"
#include "ggc.h"
#include "tree.h"
*/
+/* The set of todo flags to return from tree_sra. */
+static unsigned int todoflags;
+
/* The set of aggregate variables that are candidates for scalarization. */
static bitmap sra_candidates;
should happen via memcpy and not per-element. */
bool use_block_copy;
+ /* True if everything under this element has been marked TREE_NO_WARNING. */
+ bool all_no_warning;
+
/* A flag for use with/after random access traversals. */
bool visited;
};
static void dump_sra_elt_name (FILE *, struct sra_elt *);
extern void debug_sra_elt_name (struct sra_elt *);
+/* Forward declarations. */
+static tree generate_element_ref (struct sra_elt *);
\f
/* Return true if DECL is an SRA candidate. */
static bool
is_sra_candidate_decl (tree decl)
{
- return DECL_P (decl) && bitmap_bit_p (sra_candidates, var_ann (decl)->uid);
+ return DECL_P (decl) && bitmap_bit_p (sra_candidates, DECL_UID (decl));
}
/* Return true if TYPE is a scalar type. */
enum tree_code code = TREE_CODE (type);
return (code == INTEGER_TYPE || code == REAL_TYPE || code == VECTOR_TYPE
|| code == ENUMERAL_TYPE || code == BOOLEAN_TYPE
- || code == CHAR_TYPE || code == POINTER_TYPE || code == OFFSET_TYPE
+ || code == POINTER_TYPE || code == OFFSET_TYPE
|| code == REFERENCE_TYPE);
}
instantiated, just that if we decide to break up the type into
separate pieces that it can be done. */
-static bool
-type_can_be_decomposed_p (tree type)
+bool
+sra_type_can_be_decomposed_p (tree type)
{
unsigned int cache = TYPE_UID (TYPE_MAIN_VARIANT (type)) * 2;
tree t;
return false;
/* The type must have a definite nonzero size. */
- if (TYPE_SIZE (type) == NULL || integer_zerop (TYPE_SIZE (type)))
+ if (TYPE_SIZE (type) == NULL || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST
+ || integer_zerop (TYPE_SIZE (type)))
goto fail;
/* The type must be a non-union aggregate. */
}
/* We must be able to decompose the variable's type. */
- if (!type_can_be_decomposed_p (TREE_TYPE (var)))
+ if (!sra_type_can_be_decomposed_p (TREE_TYPE (var)))
{
if (dump_file && (dump_flags & TDF_DETAILS))
{
{
if (is_sra_scalar_type (type))
return true;
- if (!type_can_be_decomposed_p (type))
+ if (!sra_type_can_be_decomposed_p (type))
return false;
switch (TREE_CODE (type))
if (TREE_CODE (child) == PARM_DECL)
{
elt->n_copies = 1;
- bitmap_set_bit (needs_copy_in, var_ann (child)->uid);
+ bitmap_set_bit (needs_copy_in, DECL_UID (child));
}
}
/* Invoked when ELT is required as a unit. Note that ELT might refer to
a leaf node, in which case this is a simple scalar reference. *EXPR_P
points to the location of the expression. IS_OUTPUT is true if this
- is a left-hand-side reference. */
+ is a left-hand-side reference. USE_ALL is true if we saw something we
+ couldn't quite identify and had to force the use of the entire object. */
void (*use) (struct sra_elt *elt, tree *expr_p,
- block_stmt_iterator *bsi, bool is_output);
+ block_stmt_iterator *bsi, bool is_output, bool use_all);
/* Invoked when we have a copy between two scalarizable references. */
void (*copy) (struct sra_elt *lhs_elt, struct sra_elt *rhs_elt,
tree expr = *expr_p;
tree inner = expr;
bool disable_scalarization = false;
+ bool use_all_p = false;
/* We're looking to collect a reference expression between EXPR and INNER,
such that INNER is a scalarizable decl and all other nodes through EXPR
if (disable_scalarization)
elt->cannot_scalarize = true;
else
- fns->use (elt, expr_p, bsi, is_output);
+ fns->use (elt, expr_p, bsi, is_output, use_all_p);
}
return;
goto use_all;
case ARRAY_RANGE_REF:
- /* Similarly, an subrange reference is used to modify indexing. Which
+ /* Similarly, a subrange reference is used to modify indexing. Which
means that the canonical element names that we have won't work. */
goto use_all;
use_all:
expr_p = &TREE_OPERAND (inner, 0);
inner = expr = *expr_p;
+ use_all_p = true;
break;
default:
return;
}
+ /* If the RHS is scalarizable, handle it. There are only two cases. */
+ if (rhs_elt)
+ {
+ if (!rhs_elt->is_scalar)
+ fns->ldst (rhs_elt, lhs, bsi, false);
+ else
+ fns->use (rhs_elt, &TREE_OPERAND (expr, 1), bsi, false, false);
+ }
+
+ /* If it isn't scalarizable, there may be scalarizable variables within, so
+ check for a call or else walk the RHS to see if we need to do any
+ copy-in operations. We need to do it before the LHS is scalarized so
+ that the statements get inserted in the proper place, before any
+ copy-out operations. */
+ else
+ {
+ tree call = get_call_expr_in (rhs);
+ if (call)
+ sra_walk_call_expr (call, bsi, fns);
+ else
+ sra_walk_expr (&TREE_OPERAND (expr, 1), bsi, false, fns);
+ }
+
+ /* Likewise, handle the LHS being scalarizable. We have cases similar
+ to those above, but also want to handle RHS being constant. */
if (lhs_elt)
{
/* If this is an assignment from a constant, or constructor, then
/* Otherwise we're being used in some context that requires the
aggregate to be seen as a whole. Invoke USE. */
else
- fns->use (lhs_elt, &TREE_OPERAND (expr, 0), bsi, true);
- }
- else
- {
- /* LHS_ELT being null only means that the LHS as a whole is not a
- scalarizable reference. There may be occurrences of scalarizable
- variables within, which implies a USE. */
- sra_walk_expr (&TREE_OPERAND (expr, 0), bsi, true, fns);
+ fns->use (lhs_elt, &TREE_OPERAND (expr, 0), bsi, true, false);
}
- /* Likewise for the right-hand side. The only difference here is that
- we don't have to handle constants, and the RHS may be a call. */
- if (rhs_elt)
- {
- if (!rhs_elt->is_scalar)
- fns->ldst (rhs_elt, lhs, bsi, false);
- else
- fns->use (rhs_elt, &TREE_OPERAND (expr, 1), bsi, false);
- }
+ /* Similarly to above, LHS_ELT being null only means that the LHS as a
+ whole is not a scalarizable reference. There may be occurrences of
+ scalarizable variables within, which implies a USE. */
else
- {
- tree call = get_call_expr_in (rhs);
- if (call)
- sra_walk_call_expr (call, bsi, fns);
- else
- sra_walk_expr (&TREE_OPERAND (expr, 1), bsi, false, fns);
- }
+ sra_walk_expr (&TREE_OPERAND (expr, 0), bsi, true, fns);
}
/* Entry point to the walk functions. Search the entire function,
/* If the statement has no virtual operands, then it doesn't
make any structure references that we care about. */
- if (NUM_V_MAY_DEFS (V_MAY_DEF_OPS (ann)) == 0
- && NUM_VUSES (VUSE_OPS (ann)) == 0
- && NUM_V_MUST_DEFS (V_MUST_DEF_OPS (ann)) == 0)
+ if (ZERO_SSA_OPERANDS (stmt, (SSA_OP_VIRTUAL_DEFS | SSA_OP_VUSE)))
continue;
switch (TREE_CODE (stmt))
static bool
find_candidates_for_sra (void)
{
- size_t i;
bool any_set = false;
+ tree var;
+ referenced_var_iterator rvi;
- for (i = 0; i < num_referenced_vars; i++)
+ FOR_EACH_REFERENCED_VAR (var, rvi)
{
- tree var = referenced_var (i);
if (decl_can_be_decomposed_p (var))
{
- bitmap_set_bit (sra_candidates, var_ann (var)->uid);
+ bitmap_set_bit (sra_candidates, DECL_UID (var));
any_set = true;
}
}
static void
scan_use (struct sra_elt *elt, tree *expr_p ATTRIBUTE_UNUSED,
block_stmt_iterator *bsi ATTRIBUTE_UNUSED,
- bool is_output ATTRIBUTE_UNUSED)
+ bool is_output ATTRIBUTE_UNUSED, bool use_all ATTRIBUTE_UNUSED)
{
elt->n_uses += 1;
}
{
build_element_name_1 (elt);
obstack_1grow (&sra_obstack, '\0');
- return obstack_finish (&sra_obstack);
+ return XOBFINISH (&sra_obstack, char *);
}
/* Instantiate an element as an independent variable. */
elt->replacement = var = make_rename_temp (elt->type, "SR");
DECL_SOURCE_LOCATION (var) = DECL_SOURCE_LOCATION (base);
- TREE_NO_WARNING (var) = TREE_NO_WARNING (base);
- DECL_ARTIFICIAL (var) = DECL_ARTIFICIAL (base);
- DECL_IGNORED_P (var) = DECL_IGNORED_P (base);
+ DECL_ARTIFICIAL (var) = 1;
+
+ if (TREE_THIS_VOLATILE (elt->type))
+ {
+ TREE_THIS_VOLATILE (var) = 1;
+ TREE_SIDE_EFFECTS (var) = 1;
+ }
if (DECL_NAME (base) && !DECL_IGNORED_P (base))
{
char *pretty_name = build_element_name (elt);
DECL_NAME (var) = get_identifier (pretty_name);
obstack_free (&sra_obstack, pretty_name);
+
+ SET_DECL_DEBUG_EXPR (var, generate_element_ref (elt));
+ DECL_DEBUG_EXPR_IS_FROM (var) = 1;
+
+ DECL_IGNORED_P (var) = 0;
+ TREE_NO_WARNING (var) = TREE_NO_WARNING (base);
+ }
+ else
+ {
+ DECL_IGNORED_P (var) = 1;
+ /* ??? We can't generate any warning that would be meaningful. */
+ TREE_NO_WARNING (var) = 1;
}
if (dump_file)
fputc ('\n', dump_file);
}
+ /* Disable scalarization of sub-elements */
+ for (c = elt->children; c; c = c->sibling)
+ {
+ c->cannot_scalarize = 1;
+ decide_block_copy (c);
+ }
return false;
}
tree size_tree = TYPE_SIZE_UNIT (elt->type);
bool use_block_copy = true;
+ /* Tradeoffs for COMPLEX types pretty much always make it better
+ to go ahead and split the components. */
+ if (TREE_CODE (elt->type) == COMPLEX_TYPE)
+ use_block_copy = false;
+
/* Don't bother trying to figure out the rest if the structure is
so large we can't do easy arithmetic. This also forces block
copies for variable sized structures. */
- if (host_integerp (size_tree, 1))
+ else if (host_integerp (size_tree, 1))
{
unsigned HOST_WIDE_INT full_size, inst_size = 0;
- unsigned int inst_count;
- unsigned int max_size;
+ unsigned int max_size, max_count, inst_count, full_count;
/* If the sra-max-structure-size parameter is 0, then the
user has not overridden the parameter and we can choose a
max_size = SRA_MAX_STRUCTURE_SIZE
? SRA_MAX_STRUCTURE_SIZE
: MOVE_RATIO * UNITS_PER_WORD;
+ max_count = SRA_MAX_STRUCTURE_COUNT
+ ? SRA_MAX_STRUCTURE_COUNT
+ : MOVE_RATIO;
full_size = tree_low_cst (size_tree, 1);
+ full_count = count_type_elements (elt->type, false);
+ inst_count = sum_instantiated_sizes (elt, &inst_size);
/* ??? What to do here. If there are two fields, and we've only
instantiated one, then instantiating the other is clearly a win.
/* If the structure is small, and we've made copies, go ahead
and instantiate, hoping that the copies will go away. */
if (full_size <= max_size
+ && (full_count - inst_count) <= max_count
&& elt->n_copies > elt->n_uses)
use_block_copy = false;
- else
- {
- inst_count = sum_instantiated_sizes (elt, &inst_size);
-
- if (inst_size * 100 >= full_size * SRA_FIELD_STRUCTURE_RATIO)
- use_block_copy = false;
- }
+ else if (inst_count * 100 >= full_count * SRA_FIELD_STRUCTURE_RATIO
+ && inst_size * 100 >= full_size * SRA_FIELD_STRUCTURE_RATIO)
+ use_block_copy = false;
/* In order to avoid block copy, we have to be able to instantiate
all elements of the type. See if this is possible. */
{
unsigned int i;
bool cleared_any;
- struct bitmap_head_def done_head;
+ bitmap_head done_head;
bitmap_iterator bi;
/* We cannot clear bits from a bitmap we're iterating over,
so save up all the bits to clear until the end. */
- bitmap_initialize (&done_head, 1);
+ bitmap_initialize (&done_head, &bitmap_default_obstack);
cleared_any = false;
EXECUTE_IF_SET_IN_BITMAP (sra_candidates, 0, i, bi)
bitmap_and_compl_into (needs_copy_in, &done_head);
}
bitmap_clear (&done_head);
+
+ if (!bitmap_empty_p (sra_candidates))
+ todoflags |= TODO_update_smt_usage;
+
+ mark_set_for_renaming (sra_candidates);
if (dump_file)
fputc ('\n', dump_file);
renaming. This becomes necessary when we modify all of a non-scalar. */
static void
-mark_all_v_defs (tree stmt)
+mark_all_v_defs_1 (tree stmt)
{
tree sym;
ssa_op_iter iter;
- get_stmt_operands (stmt);
+ update_stmt_if_modified (stmt);
- FOR_EACH_SSA_TREE_OPERAND (sym, stmt, iter, SSA_OP_VIRTUAL_DEFS)
+ FOR_EACH_SSA_TREE_OPERAND (sym, stmt, iter, SSA_OP_ALL_VIRTUALS)
{
if (TREE_CODE (sym) == SSA_NAME)
sym = SSA_NAME_VAR (sym);
- bitmap_set_bit (vars_to_rename, var_ann (sym)->uid);
+ mark_sym_for_renaming (sym);
+ }
+}
+
+
+/* Mark all the variables in virtual operands in all the statements in
+ LIST for renaming. */
+
+static void
+mark_all_v_defs (tree list)
+{
+ if (TREE_CODE (list) != STATEMENT_LIST)
+ mark_all_v_defs_1 (list);
+ else
+ {
+ tree_stmt_iterator i;
+ for (i = tsi_start (list); !tsi_end_p (i); tsi_next (&i))
+ mark_all_v_defs_1 (tsi_stmt (i));
+ }
+}
+
+/* Mark every replacement under ELT with TREE_NO_WARNING. */
+
+static void
+mark_no_warning (struct sra_elt *elt)
+{
+ if (!elt->all_no_warning)
+ {
+ if (elt->replacement)
+ TREE_NO_WARNING (elt->replacement) = 1;
+ else
+ {
+ struct sra_elt *c;
+ for (c = elt->children; c ; c = c->sibling)
+ mark_no_warning (c);
+ }
}
}
if (DECL_FIELD_CONTEXT (field) != TYPE_MAIN_VARIANT (TREE_TYPE (base)))
field = find_compatible_field (TREE_TYPE (base), field);
- return build (COMPONENT_REF, elt->type, base, field, NULL);
+ return build3 (COMPONENT_REF, elt->type, base, field, NULL);
}
case ARRAY_TYPE:
- return build (ARRAY_REF, elt->type, base, elt->element, NULL, NULL);
+ todoflags |= TODO_update_smt_usage;
+ return build4 (ARRAY_REF, elt->type, base, elt->element, NULL, NULL);
case COMPLEX_TYPE:
if (elt->element == integer_zero_node)
- return build (REALPART_EXPR, elt->type, base);
+ return build1 (REALPART_EXPR, elt->type, base);
else
- return build (IMAGPART_EXPR, elt->type, base);
+ return build1 (IMAGPART_EXPR, elt->type, base);
default:
gcc_unreachable ();
struct sra_elt *c;
tree t;
- if (elt->replacement)
+ if (!copy_out && TREE_CODE (expr) == SSA_NAME
+ && TREE_CODE (TREE_TYPE (expr)) == COMPLEX_TYPE)
+ {
+ tree r, i;
+
+ c = lookup_element (elt, integer_zero_node, NULL, NO_INSERT);
+ r = c->replacement;
+ c = lookup_element (elt, integer_one_node, NULL, NO_INSERT);
+ i = c->replacement;
+
+ t = build2 (COMPLEX_EXPR, elt->type, r, i);
+ t = build2 (MODIFY_EXPR, void_type_node, expr, t);
+ SSA_NAME_DEF_STMT (expr) = t;
+ append_to_statement_list (t, list_p);
+ }
+ else if (elt->replacement)
{
if (copy_out)
- t = build (MODIFY_EXPR, void_type_node, elt->replacement, expr);
+ t = build2 (MODIFY_EXPR, void_type_node, elt->replacement, expr);
else
- t = build (MODIFY_EXPR, void_type_node, expr, elt->replacement);
+ t = build2 (MODIFY_EXPR, void_type_node, expr, elt->replacement);
append_to_statement_list (t, list_p);
}
else
gcc_assert (src->replacement);
- t = build (MODIFY_EXPR, void_type_node, dst->replacement,
- src->replacement);
+ t = build2 (MODIFY_EXPR, void_type_node, dst->replacement,
+ src->replacement);
append_to_statement_list (t, list_p);
}
}
gcc_assert (elt->is_scalar);
t = fold_convert (elt->type, integer_zero_node);
- t = build (MODIFY_EXPR, void_type_node, elt->replacement, t);
+ t = build2 (MODIFY_EXPR, void_type_node, elt->replacement, t);
append_to_statement_list (t, list_p);
}
}
static void
generate_one_element_init (tree var, tree init, tree *list_p)
{
- tree stmt;
-
/* The replacement can be almost arbitrarily complex. Gimplify. */
- stmt = build (MODIFY_EXPR, void_type_node, var, init);
- gimplify_stmt (&stmt);
-
- /* The replacement can expose previously unreferenced variables. */
- if (TREE_CODE (stmt) == STATEMENT_LIST)
- {
- tree_stmt_iterator i;
- for (i = tsi_start (stmt); !tsi_end_p (i); tsi_next (&i))
- find_new_referenced_vars (tsi_stmt_ptr (i));
- }
- else
- find_new_referenced_vars (&stmt);
-
- append_to_statement_list (stmt, list_p);
+ tree stmt = build2 (MODIFY_EXPR, void_type_node, var, init);
+ gimplify_and_add (stmt, list_p);
}
/* Generate a set of assignment statements in *LIST_P to set all instantiated
handle. */
static bool
-generate_element_init (struct sra_elt *elt, tree init, tree *list_p)
+generate_element_init_1 (struct sra_elt *elt, tree init, tree *list_p)
{
bool result = true;
enum tree_code init_code;
struct sra_elt *sub;
tree t;
+ unsigned HOST_WIDE_INT idx;
+ tree value, purpose;
/* We can be passed DECL_INITIAL of a static variable. It might have a
conversion, which we strip off here. */
else
t = (init_code == COMPLEX_EXPR
? TREE_OPERAND (init, 1) : TREE_IMAGPART (init));
- result &= generate_element_init (sub, t, list_p);
+ result &= generate_element_init_1 (sub, t, list_p);
}
break;
case CONSTRUCTOR:
- for (t = CONSTRUCTOR_ELTS (init); t ; t = TREE_CHAIN (t))
+ FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (init), idx, purpose, value)
{
- sub = lookup_element (elt, TREE_PURPOSE (t), NULL, NO_INSERT);
- if (sub == NULL)
- continue;
- result &= generate_element_init (sub, TREE_VALUE (t), list_p);
+ if (TREE_CODE (purpose) == RANGE_EXPR)
+ {
+ tree lower = TREE_OPERAND (purpose, 0);
+ tree upper = TREE_OPERAND (purpose, 1);
+
+ while (1)
+ {
+ sub = lookup_element (elt, lower, NULL, NO_INSERT);
+ if (sub != NULL)
+ result &= generate_element_init_1 (sub, value, list_p);
+ if (tree_int_cst_equal (lower, upper))
+ break;
+ lower = int_const_binop (PLUS_EXPR, lower,
+ integer_one_node, true);
+ }
+ }
+ else
+ {
+ sub = lookup_element (elt, purpose, NULL, NO_INSERT);
+ if (sub != NULL)
+ result &= generate_element_init_1 (sub, value, list_p);
+ }
}
break;
return result;
}
+/* A wrapper function for generate_element_init_1 that handles cleanup after
+ gimplification. */
+
+static bool
+generate_element_init (struct sra_elt *elt, tree init, tree *list_p)
+{
+ bool ret;
+
+ push_gimplify_context ();
+ ret = generate_element_init_1 (elt, init, list_p);
+ pop_gimplify_context (NULL);
+
+ /* The replacement can expose previously unreferenced variables. */
+ if (ret && *list_p)
+ {
+ tree_stmt_iterator i;
+
+ for (i = tsi_start (*list_p); !tsi_end_p (i); tsi_next (&i))
+ find_new_referenced_vars (tsi_stmt_ptr (i));
+ }
+
+ return ret;
+}
+
/* Insert STMT on all the outgoing edges out of BB. Note that if BB
has more than one edge, STMT will be replicated for each edge. Also,
abnormal edges will be ignored. */
/* Helper function to insert LIST before BSI, and set up line number info. */
-static void
+void
sra_insert_before (block_stmt_iterator *bsi, tree list)
{
tree stmt = bsi_stmt (*bsi);
/* Similarly, but insert after BSI. Handles insertion onto edges as well. */
-static void
+void
sra_insert_after (block_stmt_iterator *bsi, tree list)
{
tree stmt = bsi_stmt (*bsi);
sra_replace (block_stmt_iterator *bsi, tree list)
{
sra_insert_before (bsi, list);
- bsi_remove (bsi);
+ bsi_remove (bsi, false);
if (bsi_end_p (*bsi))
*bsi = bsi_last (bsi->bb);
else
static void
scalarize_use (struct sra_elt *elt, tree *expr_p, block_stmt_iterator *bsi,
- bool is_output)
+ bool is_output, bool use_all)
{
tree list = NULL, stmt = bsi_stmt (*bsi);
if (is_output)
mark_all_v_defs (stmt);
*expr_p = elt->replacement;
- modify_stmt (stmt);
+ update_stmt (stmt);
}
else
{
generate_copy_inout (elt, is_output, generate_element_ref (elt), &list);
if (list == NULL)
return;
- mark_all_v_defs (expr_first (list));
+ mark_all_v_defs (list);
if (is_output)
sra_insert_after (bsi, list);
else
- sra_insert_before (bsi, list);
+ {
+ sra_insert_before (bsi, list);
+ if (use_all)
+ mark_no_warning (elt);
+ }
}
}
TREE_OPERAND (stmt, 0) = lhs_elt->replacement;
TREE_OPERAND (stmt, 1) = rhs_elt->replacement;
- modify_stmt (stmt);
+ update_stmt (stmt);
}
else if (lhs_elt->use_block_copy || rhs_elt->use_block_copy)
{
generate_element_ref (rhs_elt), &list);
if (list)
{
- mark_all_v_defs (expr_first (list));
+ mark_all_v_defs (list);
sra_insert_before (bsi, list);
}
generate_copy_inout (lhs_elt, true,
generate_element_ref (lhs_elt), &list);
if (list)
- sra_insert_after (bsi, list);
+ {
+ mark_all_v_defs (list);
+ sra_insert_after (bsi, list);
+ }
}
else
{
list = NULL;
generate_element_copy (lhs_elt, rhs_elt, &list);
gcc_assert (list);
+ mark_all_v_defs (list);
sra_replace (bsi, list);
}
}
/* Generate initialization statements for all members extant in the RHS. */
if (rhs)
{
- push_gimplify_context ();
+ /* Unshare the expression just in case this is from a decl's initial. */
+ rhs = unshare_expr (rhs);
result = generate_element_init (lhs_elt, rhs, &list);
- pop_gimplify_context (NULL);
}
/* CONSTRUCTOR is defined such that any member not mentioned is assigned
exposes constants to later optimizations. */
if (list)
{
- mark_all_v_defs (expr_first (list));
+ mark_all_v_defs (list);
sra_insert_after (bsi, list);
}
}
replaces the original structure assignment. */
gcc_assert (list);
mark_all_v_defs (bsi_stmt (*bsi));
+ mark_all_v_defs (list);
sra_replace (bsi, list);
}
}
{
/* Since ELT is not fully instantiated, we have to leave the
block copy in place. Treat this as a USE. */
- scalarize_use (elt, NULL, bsi, is_output);
+ scalarize_use (elt, NULL, bsi, is_output, false);
}
else
{
mark_all_v_defs (stmt);
generate_copy_inout (elt, is_output, other, &list);
+ mark_all_v_defs (list);
gcc_assert (list);
/* Preserve EH semantics. */
}
if (list)
- insert_edge_copies (list, ENTRY_BLOCK_PTR);
+ {
+ insert_edge_copies (list, ENTRY_BLOCK_PTR);
+ mark_all_v_defs (list);
+ }
}
/* Entry point to phase 4. Update the function to match replacements. */
fputc ('\n', stderr);
}
+void
+sra_init_cache (void)
+{
+ if (sra_type_decomp_cache)
+ return;
+
+ sra_type_decomp_cache = BITMAP_ALLOC (NULL);
+ sra_type_inst_cache = BITMAP_ALLOC (NULL);
+}
+
/* Main entry point. */
-static void
+static unsigned int
tree_sra (void)
{
/* Initialize local variables. */
+ todoflags = 0;
gcc_obstack_init (&sra_obstack);
- sra_candidates = BITMAP_XMALLOC ();
- needs_copy_in = BITMAP_XMALLOC ();
- sra_type_decomp_cache = BITMAP_XMALLOC ();
- sra_type_inst_cache = BITMAP_XMALLOC ();
+ sra_candidates = BITMAP_ALLOC (NULL);
+ needs_copy_in = BITMAP_ALLOC (NULL);
+ sra_init_cache ();
sra_map = htab_create (101, sra_elt_hash, sra_elt_eq, NULL);
/* Scan. If we find anything, instantiate and scalarize. */
/* Free allocated memory. */
htab_delete (sra_map);
sra_map = NULL;
- BITMAP_XFREE (sra_candidates);
- BITMAP_XFREE (needs_copy_in);
- BITMAP_XFREE (sra_type_decomp_cache);
- BITMAP_XFREE (sra_type_inst_cache);
+ BITMAP_FREE (sra_candidates);
+ BITMAP_FREE (needs_copy_in);
+ BITMAP_FREE (sra_type_decomp_cache);
+ BITMAP_FREE (sra_type_inst_cache);
obstack_free (&sra_obstack, NULL);
+ return todoflags;
}
static bool
TV_TREE_SRA, /* tv_id */
PROP_cfg | PROP_ssa | PROP_alias, /* properties_required */
0, /* properties_provided */
- 0, /* properties_destroyed */
+ PROP_smt_usage, /* properties_destroyed */
0, /* todo_flags_start */
- TODO_dump_func | TODO_rename_vars
- | TODO_ggc_collect | TODO_verify_ssa, /* todo_flags_finish */
+ TODO_dump_func /* todo_flags_finish */
+ | TODO_update_ssa
+ | TODO_ggc_collect | TODO_verify_ssa,
0 /* letter */
};