* gimple-walk.h: New File. Relocate prototypes from gimple.h.
(struct walk_stmt_info): Relocate here from gimple.h.
* gimple-iterator.h: New File. Relocate prototypes from gimple.h.
(struct gimple_stmt_iterator_d): Relocate here from gimple.h.
(gsi_start_1, gsi_none, gsi_start_bb, gsi_last_1, gsi_last_bb,
gsi_end_p, gsi_one_before_end_p, gsi_next, gsi_prev, gsi_stmt,
gsi_after_labels, gsi_next_nondebug, gsi_prev_nondebug,
gsi_start_nondebug_bb, gsi_start_nondebug_after_labels_bb,
gsi_last_nondebug_bb, gsi_bb, gsi_seq): Relocate here from gimple.h.
* gimple.h (struct gimple_stmt_iterator_d): Move to gimple-iterator.h.
(gsi_start_1, gsi_none, gsi_start_bb, gsi_last_1, gsi_last_bb,
gsi_end_p, gsi_one_before_end_p, gsi_next, gsi_prev, gsi_stmt,
gsi_after_labels, gsi_next_nondebug, gsi_prev_nondebug,
gsi_start_nondebug_bb, gsi_start_nondebug_after_labels_bb,
gsi_last_nondebug_bb, gsi_bb, gsi_seq): Move to gimple-iterator.h.
(struct walk_stmt_info): Move to gimple-walk.h.
(gimple_seq_set_location): Move to gimple.c
* gimple-walk.c: New File.
(walk_gimple_seq_mod, walk_gimple_seq, walk_gimple_asm, walk_gimple_op,
walk_gimple_stmt, get_base_loadstore, walk_stmt_load_store_addr_ops,
walk_stmt_load_store_ops): Relocate here from gimple.c.
* gimple-iterator.c: Include gimple-iterator.h.
* gimple.c (walk_gimple_seq_mod, walk_gimple_seq, walk_gimple_asm,
walk_gimple_op, walk_gimple_stmt, get_base_loadstore,
walk_stmt_load_store_addr_ops, walk_stmt_load_store_ops): Move to
gimple-walk.c.
(gimple_seq_set_location): Relocate from gimple.h.
* tree-phinodes.h (set_phi_nodes): Move to tree-phinodes.c.
* tree-phinodes.c (set_phi_nodes): Relocate from tree-phinodes.h.
* gengtype.c (open_base_files): Add gimple-iterator.h to include list.
* Makefile.in (OBJS): Add gimple-walk.o
===================================================================
***************
+ /* Header file for gimple statement walk support.
+ Copyright (C) 2013 Free Software Foundation, Inc.
+
+ This file is part of GCC.
+
+ GCC is free software; you can redistribute it and/or modify it under
+ the terms of the GNU General Public License as published by the Free
+ Software Foundation; either version 3, or (at your option) any later
+ version.
+
+ GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GCC; see the file COPYING3. If not see
+ <http://www.gnu.org/licenses/>. */
+
+ #ifndef GCC_GIMPLE_WALK_H
+ #define GCC_GIMPLE_WALK_H
+
+ /* Convenience routines to walk all statements of a gimple function.
+ Note that this is useful exclusively before the code is converted
+ into SSA form. Once the program is in SSA form, the standard
+ operand interface should be used to analyze/modify statements. */
+ struct walk_stmt_info
+ {
+ /* Points to the current statement being walked. */
+ gimple_stmt_iterator gsi;
+
+ /* Additional data that the callback functions may want to carry
+ through the recursion. */
+ void *info;
+
+ /* Pointer map used to mark visited tree nodes when calling
+ walk_tree on each operand. If set to NULL, duplicate tree nodes
+ will be visited more than once. */
+ struct pointer_set_t *pset;
+
+ /* Operand returned by the callbacks. This is set when calling
+ walk_gimple_seq. If the walk_stmt_fn or walk_tree_fn callback
+ returns non-NULL, this field will contain the tree returned by
+ the last callback. */
+ tree callback_result;
+
+ /* Indicates whether the operand being examined may be replaced
+ with something that matches is_gimple_val (if true) or something
+ slightly more complicated (if false). "Something" technically
+ means the common subset of is_gimple_lvalue and is_gimple_rhs,
+ but we never try to form anything more complicated than that, so
+ we don't bother checking.
+
+ Also note that CALLBACK should update this flag while walking the
+ sub-expressions of a statement. For instance, when walking the
+ statement 'foo (&var)', the flag VAL_ONLY will initially be set
+ to true, however, when walking &var, the operand of that
+ ADDR_EXPR does not need to be a GIMPLE value. */
+ BOOL_BITFIELD val_only : 1;
+
+ /* True if we are currently walking the LHS of an assignment. */
+ BOOL_BITFIELD is_lhs : 1;
+
+ /* Optional. Set to true by the callback functions if they made any
+ changes. */
+ BOOL_BITFIELD changed : 1;
+
+ /* True if we're interested in location information. */
+ BOOL_BITFIELD want_locations : 1;
+
+ /* True if we've removed the statement that was processed. */
+ BOOL_BITFIELD removed_stmt : 1;
+ };
+
+ /* Callback for walk_gimple_stmt. Called for every statement found
+ during traversal. The first argument points to the statement to
+ walk. The second argument is a flag that the callback sets to
+ 'true' if it the callback handled all the operands and
+ sub-statements of the statement (the default value of this flag is
+ 'false'). The third argument is an anonymous pointer to data
+ to be used by the callback. */
+ typedef tree (*walk_stmt_fn) (gimple_stmt_iterator *, bool *,
+ struct walk_stmt_info *);
+
+ extern gimple walk_gimple_seq_mod (gimple_seq *, walk_stmt_fn, walk_tree_fn,
+ struct walk_stmt_info *);
+ extern gimple walk_gimple_seq (gimple_seq, walk_stmt_fn, walk_tree_fn,
+ struct walk_stmt_info *);
+ extern tree walk_gimple_op (gimple, walk_tree_fn, struct walk_stmt_info *);
+ extern tree walk_gimple_stmt (gimple_stmt_iterator *, walk_stmt_fn,
+ walk_tree_fn, struct walk_stmt_info *);
+ extern bool walk_stmt_load_store_addr_ops (gimple, void *,
+ bool (*)(gimple, tree, void *),
+ bool (*)(gimple, tree, void *),
+ bool (*)(gimple, tree, void *));
+ extern bool walk_stmt_load_store_ops (gimple, void *,
+ bool (*)(gimple, tree, void *),
+ bool (*)(gimple, tree, void *));
+ #endif /* GCC_GIMPLE_WALK_H */
===================================================================
***************
+ /* Header file for gimple iterators.
+ Copyright (C) 2013 Free Software Foundation, Inc.
+
+ This file is part of GCC.
+
+ GCC is free software; you can redistribute it and/or modify it under
+ the terms of the GNU General Public License as published by the Free
+ Software Foundation; either version 3, or (at your option) any later
+ version.
+
+ GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GCC; see the file COPYING3. If not see
+ <http://www.gnu.org/licenses/>. */
+
+ #ifndef GCC_GIMPLE_ITERATOR_H
+ #define GCC_GIMPLE_ITERATOR_H
+
+ /* Iterator object for GIMPLE statement sequences. */
+
+ typedef struct gimple_stmt_iterator_d
+ {
+ /* Sequence node holding the current statement. */
+ gimple_seq_node ptr;
+
+ /* Sequence and basic block holding the statement. These fields
+ are necessary to handle edge cases such as when statement is
+ added to an empty basic block or when the last statement of a
+ block/sequence is removed. */
+ gimple_seq *seq;
+ basic_block bb;
+ } gimple_stmt_iterator;
+
+ extern void gsi_insert_seq_before_without_update (gimple_stmt_iterator *,
+ gimple_seq,
+ enum gsi_iterator_update);
+ extern void gsi_insert_seq_before (gimple_stmt_iterator *, gimple_seq,
+ enum gsi_iterator_update);
+ extern void gsi_insert_seq_after_without_update (gimple_stmt_iterator *,
+ gimple_seq,
+ enum gsi_iterator_update);
+ extern void gsi_insert_seq_after (gimple_stmt_iterator *, gimple_seq,
+ enum gsi_iterator_update);
+ extern gimple_seq gsi_split_seq_after (gimple_stmt_iterator);
+ extern void gsi_set_stmt (gimple_stmt_iterator *, gimple);
+ extern void gsi_split_seq_before (gimple_stmt_iterator *, gimple_seq *);
+ extern void gsi_replace (gimple_stmt_iterator *, gimple, bool);
+ extern void gsi_replace_with_seq (gimple_stmt_iterator *, gimple_seq, bool);
+ extern void gsi_insert_before_without_update (gimple_stmt_iterator *, gimple,
+ enum gsi_iterator_update);
+ extern void gsi_insert_before (gimple_stmt_iterator *, gimple,
+ enum gsi_iterator_update);
+ extern void gsi_insert_after_without_update (gimple_stmt_iterator *, gimple,
+ enum gsi_iterator_update);
+ extern void gsi_insert_after (gimple_stmt_iterator *, gimple,
+ enum gsi_iterator_update);
+ extern bool gsi_remove (gimple_stmt_iterator *, bool);
+ extern gimple_stmt_iterator gsi_for_stmt (gimple);
+ extern void gsi_move_after (gimple_stmt_iterator *, gimple_stmt_iterator *);
+ extern void gsi_move_before (gimple_stmt_iterator *, gimple_stmt_iterator *);
+ extern void gsi_move_to_bb_end (gimple_stmt_iterator *, basic_block);
+ extern void gsi_insert_on_edge (edge, gimple);
+ extern void gsi_insert_seq_on_edge (edge, gimple_seq);
+ extern basic_block gsi_insert_on_edge_immediate (edge, gimple);
+ extern basic_block gsi_insert_seq_on_edge_immediate (edge, gimple_seq);
+ extern void gsi_commit_edge_inserts (void);
+ extern void gsi_commit_one_edge_insert (edge, basic_block *);
+ extern gimple_stmt_iterator gsi_start_phis (basic_block);
+
+ /* Return a new iterator pointing to GIMPLE_SEQ's first statement. */
+
+ static inline gimple_stmt_iterator
+ gsi_start_1 (gimple_seq *seq)
+ {
+ gimple_stmt_iterator i;
+
+ i.ptr = gimple_seq_first (*seq);
+ i.seq = seq;
+ i.bb = i.ptr ? gimple_bb (i.ptr) : NULL;
+
+ return i;
+ }
+
+ #define gsi_start(x) gsi_start_1 (&(x))
+
+ static inline gimple_stmt_iterator
+ gsi_none (void)
+ {
+ gimple_stmt_iterator i;
+ i.ptr = NULL;
+ i.seq = NULL;
+ i.bb = NULL;
+ return i;
+ }
+
+ /* Return a new iterator pointing to the first statement in basic block BB. */
+
+ static inline gimple_stmt_iterator
+ gsi_start_bb (basic_block bb)
+ {
+ gimple_stmt_iterator i;
+ gimple_seq *seq;
+
+ seq = bb_seq_addr (bb);
+ i.ptr = gimple_seq_first (*seq);
+ i.seq = seq;
+ i.bb = bb;
+
+ return i;
+ }
+
+ /* Return a new iterator initially pointing to GIMPLE_SEQ's last statement. */
+
+ static inline gimple_stmt_iterator
+ gsi_last_1 (gimple_seq *seq)
+ {
+ gimple_stmt_iterator i;
+
+ i.ptr = gimple_seq_last (*seq);
+ i.seq = seq;
+ i.bb = i.ptr ? gimple_bb (i.ptr) : NULL;
+
+ return i;
+ }
+
+ #define gsi_last(x) gsi_last_1 (&(x))
+
+ /* Return a new iterator pointing to the last statement in basic block BB. */
+
+ static inline gimple_stmt_iterator
+ gsi_last_bb (basic_block bb)
+ {
+ gimple_stmt_iterator i;
+ gimple_seq *seq;
+
+ seq = bb_seq_addr (bb);
+ i.ptr = gimple_seq_last (*seq);
+ i.seq = seq;
+ i.bb = bb;
+
+ return i;
+ }
+
+ /* Return true if I is at the end of its sequence. */
+
+ static inline bool
+ gsi_end_p (gimple_stmt_iterator i)
+ {
+ return i.ptr == NULL;
+ }
+
+ /* Return true if I is one statement before the end of its sequence. */
+
+ static inline bool
+ gsi_one_before_end_p (gimple_stmt_iterator i)
+ {
+ return i.ptr != NULL && i.ptr->gsbase.next == NULL;
+ }
+
+ /* Advance the iterator to the next gimple statement. */
+
+ static inline void
+ gsi_next (gimple_stmt_iterator *i)
+ {
+ i->ptr = i->ptr->gsbase.next;
+ }
+
+ /* Advance the iterator to the previous gimple statement. */
+
+ static inline void
+ gsi_prev (gimple_stmt_iterator *i)
+ {
+ gimple prev = i->ptr->gsbase.prev;
+ if (prev->gsbase.next)
+ i->ptr = prev;
+ else
+ i->ptr = NULL;
+ }
+
+ /* Return the current stmt. */
+
+ static inline gimple
+ gsi_stmt (gimple_stmt_iterator i)
+ {
+ return i.ptr;
+ }
+
+ /* Return a block statement iterator that points to the first non-label
+ statement in block BB. */
+
+ static inline gimple_stmt_iterator
+ gsi_after_labels (basic_block bb)
+ {
+ gimple_stmt_iterator gsi = gsi_start_bb (bb);
+
+ while (!gsi_end_p (gsi) && gimple_code (gsi_stmt (gsi)) == GIMPLE_LABEL)
+ gsi_next (&gsi);
+
+ return gsi;
+ }
+
+ /* Advance the iterator to the next non-debug gimple statement. */
+
+ static inline void
+ gsi_next_nondebug (gimple_stmt_iterator *i)
+ {
+ do
+ {
+ gsi_next (i);
+ }
+ while (!gsi_end_p (*i) && is_gimple_debug (gsi_stmt (*i)));
+ }
+
+ /* Advance the iterator to the next non-debug gimple statement. */
+
+ static inline void
+ gsi_prev_nondebug (gimple_stmt_iterator *i)
+ {
+ do
+ {
+ gsi_prev (i);
+ }
+ while (!gsi_end_p (*i) && is_gimple_debug (gsi_stmt (*i)));
+ }
+
+ /* Return a new iterator pointing to the first non-debug statement in
+ basic block BB. */
+
+ static inline gimple_stmt_iterator
+ gsi_start_nondebug_bb (basic_block bb)
+ {
+ gimple_stmt_iterator i = gsi_start_bb (bb);
+
+ if (!gsi_end_p (i) && is_gimple_debug (gsi_stmt (i)))
+ gsi_next_nondebug (&i);
+
+ return i;
+ }
+
+ /* Return a new iterator pointing to the first non-debug non-label statement in
+ basic block BB. */
+
+ static inline gimple_stmt_iterator
+ gsi_start_nondebug_after_labels_bb (basic_block bb)
+ {
+ gimple_stmt_iterator i = gsi_after_labels (bb);
+
+ if (!gsi_end_p (i) && is_gimple_debug (gsi_stmt (i)))
+ gsi_next_nondebug (&i);
+
+ return i;
+ }
+
+ /* Return a new iterator pointing to the last non-debug statement in
+ basic block BB. */
+
+ static inline gimple_stmt_iterator
+ gsi_last_nondebug_bb (basic_block bb)
+ {
+ gimple_stmt_iterator i = gsi_last_bb (bb);
+
+ if (!gsi_end_p (i) && is_gimple_debug (gsi_stmt (i)))
+ gsi_prev_nondebug (&i);
+
+ return i;
+ }
+
+ /* Return the basic block associated with this iterator. */
+
+ static inline basic_block
+ gsi_bb (gimple_stmt_iterator i)
+ {
+ return i.bb;
+ }
+
+ /* Return the sequence associated with this iterator. */
+
+ static inline gimple_seq
+ gsi_seq (gimple_stmt_iterator i)
+ {
+ return *i.seq;
+ }
+
+ #endif /* GCC_GIMPLE_ITERATOR_H */
===================================================================
*************** enum plf_mask {
GF_PLF_2 = 1 << 1
};
- /* Iterator object for GIMPLE statement sequences. */
-
- struct gimple_stmt_iterator_d
- {
- /* Sequence node holding the current statement. */
- gimple_seq_node ptr;
-
- /* Sequence and basic block holding the statement. These fields
- are necessary to handle edge cases such as when statement is
- added to an empty basic block or when the last statement of a
- block/sequence is removed. */
- gimple_seq *seq;
- basic_block bb;
- };
-
/* Data structure definitions for GIMPLE tuples. NOTE: word markers
are for 64 bit hosts. */
*************** extern bool gimple_compare_field_offset
extern tree gimple_unsigned_type (tree);
extern tree gimple_signed_type (tree);
extern alias_set_type gimple_get_alias_set (tree);
- extern bool walk_stmt_load_store_addr_ops (gimple, void *,
- bool (*)(gimple, tree, void *),
- bool (*)(gimple, tree, void *),
- bool (*)(gimple, tree, void *));
- extern bool walk_stmt_load_store_ops (gimple, void *,
- bool (*)(gimple, tree, void *),
- bool (*)(gimple, tree, void *));
extern bool gimple_ior_addresses_taken (bitmap, gimple);
extern bool gimple_call_builtin_p (gimple, enum built_in_class);
extern bool gimple_call_builtin_p (gimple, enum built_in_function);
*************** gimple_expr_type (const_gimple stmt)
return void_type_node;
}
- /* Return a new iterator pointing to GIMPLE_SEQ's first statement. */
-
- static inline gimple_stmt_iterator
- gsi_start_1 (gimple_seq *seq)
- {
- gimple_stmt_iterator i;
-
- i.ptr = gimple_seq_first (*seq);
- i.seq = seq;
- i.bb = i.ptr ? gimple_bb (i.ptr) : NULL;
-
- return i;
- }
-
- #define gsi_start(x) gsi_start_1 (&(x))
-
- static inline gimple_stmt_iterator
- gsi_none (void)
- {
- gimple_stmt_iterator i;
- i.ptr = NULL;
- i.seq = NULL;
- i.bb = NULL;
- return i;
- }
-
- /* Return a new iterator pointing to the first statement in basic block BB. */
-
- static inline gimple_stmt_iterator
- gsi_start_bb (basic_block bb)
- {
- gimple_stmt_iterator i;
- gimple_seq *seq;
-
- seq = bb_seq_addr (bb);
- i.ptr = gimple_seq_first (*seq);
- i.seq = seq;
- i.bb = bb;
-
- return i;
- }
-
-
- /* Return a new iterator initially pointing to GIMPLE_SEQ's last statement. */
-
- static inline gimple_stmt_iterator
- gsi_last_1 (gimple_seq *seq)
- {
- gimple_stmt_iterator i;
-
- i.ptr = gimple_seq_last (*seq);
- i.seq = seq;
- i.bb = i.ptr ? gimple_bb (i.ptr) : NULL;
-
- return i;
- }
-
- #define gsi_last(x) gsi_last_1 (&(x))
-
- /* Return a new iterator pointing to the last statement in basic block BB. */
-
- static inline gimple_stmt_iterator
- gsi_last_bb (basic_block bb)
- {
- gimple_stmt_iterator i;
- gimple_seq *seq;
-
- seq = bb_seq_addr (bb);
- i.ptr = gimple_seq_last (*seq);
- i.seq = seq;
- i.bb = bb;
-
- return i;
- }
-
-
- /* Return true if I is at the end of its sequence. */
-
- static inline bool
- gsi_end_p (gimple_stmt_iterator i)
- {
- return i.ptr == NULL;
- }
-
-
- /* Return true if I is one statement before the end of its sequence. */
-
- static inline bool
- gsi_one_before_end_p (gimple_stmt_iterator i)
- {
- return i.ptr != NULL && i.ptr->gsbase.next == NULL;
- }
-
-
- /* Advance the iterator to the next gimple statement. */
-
- static inline void
- gsi_next (gimple_stmt_iterator *i)
- {
- i->ptr = i->ptr->gsbase.next;
- }
-
- /* Advance the iterator to the previous gimple statement. */
-
- static inline void
- gsi_prev (gimple_stmt_iterator *i)
- {
- gimple prev = i->ptr->gsbase.prev;
- if (prev->gsbase.next)
- i->ptr = prev;
- else
- i->ptr = NULL;
- }
-
- /* Return the current stmt. */
-
- static inline gimple
- gsi_stmt (gimple_stmt_iterator i)
- {
- return i.ptr;
- }
-
- /* Return a block statement iterator that points to the first non-label
- statement in block BB. */
-
- static inline gimple_stmt_iterator
- gsi_after_labels (basic_block bb)
- {
- gimple_stmt_iterator gsi = gsi_start_bb (bb);
-
- while (!gsi_end_p (gsi) && gimple_code (gsi_stmt (gsi)) == GIMPLE_LABEL)
- gsi_next (&gsi);
-
- return gsi;
- }
-
- /* Advance the iterator to the next non-debug gimple statement. */
-
- static inline void
- gsi_next_nondebug (gimple_stmt_iterator *i)
- {
- do
- {
- gsi_next (i);
- }
- while (!gsi_end_p (*i) && is_gimple_debug (gsi_stmt (*i)));
- }
-
- /* Advance the iterator to the next non-debug gimple statement. */
-
- static inline void
- gsi_prev_nondebug (gimple_stmt_iterator *i)
- {
- do
- {
- gsi_prev (i);
- }
- while (!gsi_end_p (*i) && is_gimple_debug (gsi_stmt (*i)));
- }
-
- /* Return a new iterator pointing to the first non-debug statement in
- basic block BB. */
-
- static inline gimple_stmt_iterator
- gsi_start_nondebug_bb (basic_block bb)
- {
- gimple_stmt_iterator i = gsi_start_bb (bb);
-
- if (!gsi_end_p (i) && is_gimple_debug (gsi_stmt (i)))
- gsi_next_nondebug (&i);
-
- return i;
- }
-
- /* Return a new iterator pointing to the first non-debug non-label statement in
- basic block BB. */
-
- static inline gimple_stmt_iterator
- gsi_start_nondebug_after_labels_bb (basic_block bb)
- {
- gimple_stmt_iterator i = gsi_after_labels (bb);
-
- if (!gsi_end_p (i) && is_gimple_debug (gsi_stmt (i)))
- gsi_next_nondebug (&i);
-
- return i;
- }
-
- /* Return a new iterator pointing to the last non-debug statement in
- basic block BB. */
-
- static inline gimple_stmt_iterator
- gsi_last_nondebug_bb (basic_block bb)
- {
- gimple_stmt_iterator i = gsi_last_bb (bb);
-
- if (!gsi_end_p (i) && is_gimple_debug (gsi_stmt (i)))
- gsi_prev_nondebug (&i);
-
- return i;
- }
-
-
- /* Return the basic block associated with this iterator. */
-
- static inline basic_block
- gsi_bb (gimple_stmt_iterator i)
- {
- return i.bb;
- }
-
-
- /* Return the sequence associated with this iterator. */
-
- static inline gimple_seq
- gsi_seq (gimple_stmt_iterator i)
- {
- return *i.seq;
- }
-
-
enum gsi_iterator_update
{
GSI_NEW_STMT, /* Only valid when single statement is added, move
*************** enum gsi_iterator_update
direction. */
};
- /* In gimple-iterator.c */
- gimple_stmt_iterator gsi_start_phis (basic_block);
- gimple_seq gsi_split_seq_after (gimple_stmt_iterator);
- void gsi_split_seq_before (gimple_stmt_iterator *, gimple_seq *);
- void gsi_set_stmt (gimple_stmt_iterator *, gimple);
- void gsi_replace (gimple_stmt_iterator *, gimple, bool);
- void gsi_replace_with_seq (gimple_stmt_iterator *, gimple_seq, bool);
- void gsi_insert_before (gimple_stmt_iterator *, gimple,
- enum gsi_iterator_update);
- void gsi_insert_before_without_update (gimple_stmt_iterator *, gimple,
- enum gsi_iterator_update);
- void gsi_insert_seq_before (gimple_stmt_iterator *, gimple_seq,
- enum gsi_iterator_update);
- void gsi_insert_seq_before_without_update (gimple_stmt_iterator *, gimple_seq,
- enum gsi_iterator_update);
- void gsi_insert_after (gimple_stmt_iterator *, gimple,
- enum gsi_iterator_update);
- void gsi_insert_after_without_update (gimple_stmt_iterator *, gimple,
- enum gsi_iterator_update);
- void gsi_insert_seq_after (gimple_stmt_iterator *, gimple_seq,
- enum gsi_iterator_update);
- void gsi_insert_seq_after_without_update (gimple_stmt_iterator *, gimple_seq,
- enum gsi_iterator_update);
- bool gsi_remove (gimple_stmt_iterator *, bool);
- gimple_stmt_iterator gsi_for_stmt (gimple);
- void gsi_move_after (gimple_stmt_iterator *, gimple_stmt_iterator *);
- void gsi_move_before (gimple_stmt_iterator *, gimple_stmt_iterator *);
- void gsi_move_to_bb_end (gimple_stmt_iterator *, basic_block);
- void gsi_insert_on_edge (edge, gimple);
- void gsi_insert_seq_on_edge (edge, gimple_seq);
- basic_block gsi_insert_on_edge_immediate (edge, gimple);
- basic_block gsi_insert_seq_on_edge_immediate (edge, gimple_seq);
- void gsi_commit_one_edge_insert (edge, basic_block *);
- void gsi_commit_edge_inserts (void);
gimple gimple_call_copy_skip_args (gimple, bitmap);
- /* Convenience routines to walk all statements of a gimple function.
- Note that this is useful exclusively before the code is converted
- into SSA form. Once the program is in SSA form, the standard
- operand interface should be used to analyze/modify statements. */
- struct walk_stmt_info
- {
- /* Points to the current statement being walked. */
- gimple_stmt_iterator gsi;
-
- /* Additional data that the callback functions may want to carry
- through the recursion. */
- void *info;
-
- /* Pointer map used to mark visited tree nodes when calling
- walk_tree on each operand. If set to NULL, duplicate tree nodes
- will be visited more than once. */
- struct pointer_set_t *pset;
-
- /* Operand returned by the callbacks. This is set when calling
- walk_gimple_seq. If the walk_stmt_fn or walk_tree_fn callback
- returns non-NULL, this field will contain the tree returned by
- the last callback. */
- tree callback_result;
-
- /* Indicates whether the operand being examined may be replaced
- with something that matches is_gimple_val (if true) or something
- slightly more complicated (if false). "Something" technically
- means the common subset of is_gimple_lvalue and is_gimple_rhs,
- but we never try to form anything more complicated than that, so
- we don't bother checking.
-
- Also note that CALLBACK should update this flag while walking the
- sub-expressions of a statement. For instance, when walking the
- statement 'foo (&var)', the flag VAL_ONLY will initially be set
- to true, however, when walking &var, the operand of that
- ADDR_EXPR does not need to be a GIMPLE value. */
- BOOL_BITFIELD val_only : 1;
-
- /* True if we are currently walking the LHS of an assignment. */
- BOOL_BITFIELD is_lhs : 1;
-
- /* Optional. Set to true by the callback functions if they made any
- changes. */
- BOOL_BITFIELD changed : 1;
-
- /* True if we're interested in location information. */
- BOOL_BITFIELD want_locations : 1;
-
- /* True if we've removed the statement that was processed. */
- BOOL_BITFIELD removed_stmt : 1;
- };
-
- /* Callback for walk_gimple_stmt. Called for every statement found
- during traversal. The first argument points to the statement to
- walk. The second argument is a flag that the callback sets to
- 'true' if it the callback handled all the operands and
- sub-statements of the statement (the default value of this flag is
- 'false'). The third argument is an anonymous pointer to data
- to be used by the callback. */
- typedef tree (*walk_stmt_fn) (gimple_stmt_iterator *, bool *,
- struct walk_stmt_info *);
-
- gimple walk_gimple_seq (gimple_seq, walk_stmt_fn, walk_tree_fn,
- struct walk_stmt_info *);
- gimple walk_gimple_seq_mod (gimple_seq *, walk_stmt_fn, walk_tree_fn,
- struct walk_stmt_info *);
- tree walk_gimple_stmt (gimple_stmt_iterator *, walk_stmt_fn, walk_tree_fn,
- struct walk_stmt_info *);
- tree walk_gimple_op (gimple, walk_tree_fn, struct walk_stmt_info *);
-
/* Enum and arrays used for allocation stats. Keep in sync with
gimple.c:gimple_alloc_kind_names. */
enum gimple_alloc_kind
*************** gimple_alloc_kind (enum gimple_code code
extern void dump_gimple_statistics (void);
- /* Set the location of all statements in SEQ to LOC. */
-
- static inline void
- gimple_seq_set_location (gimple_seq seq, location_t loc)
- {
- for (gimple_stmt_iterator i = gsi_start (seq); !gsi_end_p (i); gsi_next (&i))
- gimple_set_location (gsi_stmt (i), loc);
- }
-
/* Return true if a location should not be emitted for this statement
by annotate_all_with_location. */
*************** gimple_set_do_not_emit_location (gimple
extern void sort_case_labels (vec<tree> );
extern void preprocess_case_label_vec_for_gimple (vec<tree> , tree, tree *);
+ extern void gimple_seq_set_location (gimple_seq , location_t);
#endif /* GCC_GIMPLE_H */
===================================================================
***************
+ /* Gimple walk support.
+
+ Copyright (C) 2007-2013 Free Software Foundation, Inc.
+ Contributed by Aldy Hernandez <aldyh@redhat.com>
+
+ This file is part of GCC.
+
+ GCC is free software; you can redistribute it and/or modify it under
+ the terms of the GNU General Public License as published by the Free
+ Software Foundation; either version 3, or (at your option) any later
+ version.
+
+ GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GCC; see the file COPYING3. If not see
+ <http://www.gnu.org/licenses/>. */
+
+ #include "config.h"
+ #include "system.h"
+ #include "coretypes.h"
+ #include "tm.h"
+ #include "tree.h"
+ #include "gimple.h"
+ #include "gimple-iterator.h"
+ #include "gimple-walk.h"
+ #include "gimple-walk.h"
+ #include "demangle.h"
+
+ /* Walk all the statements in the sequence *PSEQ calling walk_gimple_stmt
+ on each one. WI is as in walk_gimple_stmt.
+
+ If walk_gimple_stmt returns non-NULL, the walk is stopped, and the
+ value is stored in WI->CALLBACK_RESULT. Also, the statement that
+ produced the value is returned if this statement has not been
+ removed by a callback (wi->removed_stmt). If the statement has
+ been removed, NULL is returned.
+
+ Otherwise, all the statements are walked and NULL returned. */
+
+ gimple
+ walk_gimple_seq_mod (gimple_seq *pseq, walk_stmt_fn callback_stmt,
+ walk_tree_fn callback_op, struct walk_stmt_info *wi)
+ {
+ gimple_stmt_iterator gsi;
+
+ for (gsi = gsi_start (*pseq); !gsi_end_p (gsi); )
+ {
+ tree ret = walk_gimple_stmt (&gsi, callback_stmt, callback_op, wi);
+ if (ret)
+ {
+ /* If CALLBACK_STMT or CALLBACK_OP return a value, WI must exist
+ to hold it. */
+ gcc_assert (wi);
+ wi->callback_result = ret;
+
+ return wi->removed_stmt ? NULL : gsi_stmt (gsi);
+ }
+
+ if (!wi->removed_stmt)
+ gsi_next (&gsi);
+ }
+
+ if (wi)
+ wi->callback_result = NULL_TREE;
+
+ return NULL;
+ }
+
+
+ /* Like walk_gimple_seq_mod, but ensure that the head of SEQ isn't
+ changed by the callbacks. */
+
+ gimple
+ walk_gimple_seq (gimple_seq seq, walk_stmt_fn callback_stmt,
+ walk_tree_fn callback_op, struct walk_stmt_info *wi)
+ {
+ gimple_seq seq2 = seq;
+ gimple ret = walk_gimple_seq_mod (&seq2, callback_stmt, callback_op, wi);
+ gcc_assert (seq2 == seq);
+ return ret;
+ }
+
+
+ /* Helper function for walk_gimple_stmt. Walk operands of a GIMPLE_ASM. */
+
+ static tree
+ walk_gimple_asm (gimple stmt, walk_tree_fn callback_op,
+ struct walk_stmt_info *wi)
+ {
+ tree ret, op;
+ unsigned noutputs;
+ const char **oconstraints;
+ unsigned i, n;
+ const char *constraint;
+ bool allows_mem, allows_reg, is_inout;
+
+ noutputs = gimple_asm_noutputs (stmt);
+ oconstraints = (const char **) alloca ((noutputs) * sizeof (const char *));
+
+ if (wi)
+ wi->is_lhs = true;
+
+ for (i = 0; i < noutputs; i++)
+ {
+ op = gimple_asm_output_op (stmt, i);
+ constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (op)));
+ oconstraints[i] = constraint;
+ parse_output_constraint (&constraint, i, 0, 0, &allows_mem, &allows_reg,
+ &is_inout);
+ if (wi)
+ wi->val_only = (allows_reg || !allows_mem);
+ ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL);
+ if (ret)
+ return ret;
+ }
+
+ n = gimple_asm_ninputs (stmt);
+ for (i = 0; i < n; i++)
+ {
+ op = gimple_asm_input_op (stmt, i);
+ constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (op)));
+ parse_input_constraint (&constraint, 0, 0, noutputs, 0,
+ oconstraints, &allows_mem, &allows_reg);
+ if (wi)
+ {
+ wi->val_only = (allows_reg || !allows_mem);
+ /* Although input "m" is not really a LHS, we need a lvalue. */
+ wi->is_lhs = !wi->val_only;
+ }
+ ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL);
+ if (ret)
+ return ret;
+ }
+
+ if (wi)
+ {
+ wi->is_lhs = false;
+ wi->val_only = true;
+ }
+
+ n = gimple_asm_nlabels (stmt);
+ for (i = 0; i < n; i++)
+ {
+ op = gimple_asm_label_op (stmt, i);
+ ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL);
+ if (ret)
+ return ret;
+ }
+
+ return NULL_TREE;
+ }
+
+
+ /* Helper function of WALK_GIMPLE_STMT. Walk every tree operand in
+ STMT. CALLBACK_OP and WI are as in WALK_GIMPLE_STMT.
+
+ CALLBACK_OP is called on each operand of STMT via walk_tree.
+ Additional parameters to walk_tree must be stored in WI. For each operand
+ OP, walk_tree is called as:
+
+ walk_tree (&OP, CALLBACK_OP, WI, WI->PSET)
+
+ If CALLBACK_OP returns non-NULL for an operand, the remaining
+ operands are not scanned.
+
+ The return value is that returned by the last call to walk_tree, or
+ NULL_TREE if no CALLBACK_OP is specified. */
+
+ tree
+ walk_gimple_op (gimple stmt, walk_tree_fn callback_op,
+ struct walk_stmt_info *wi)
+ {
+ struct pointer_set_t *pset = (wi) ? wi->pset : NULL;
+ unsigned i;
+ tree ret = NULL_TREE;
+
+ switch (gimple_code (stmt))
+ {
+ case GIMPLE_ASSIGN:
+ /* Walk the RHS operands. If the LHS is of a non-renamable type or
+ is a register variable, we may use a COMPONENT_REF on the RHS. */
+ if (wi)
+ {
+ tree lhs = gimple_assign_lhs (stmt);
+ wi->val_only
+ = (is_gimple_reg_type (TREE_TYPE (lhs)) && !is_gimple_reg (lhs))
+ || gimple_assign_rhs_class (stmt) != GIMPLE_SINGLE_RHS;
+ }
+
+ for (i = 1; i < gimple_num_ops (stmt); i++)
+ {
+ ret = walk_tree (gimple_op_ptr (stmt, i), callback_op, wi,
+ pset);
+ if (ret)
+ return ret;
+ }
+
+ /* Walk the LHS. If the RHS is appropriate for a memory, we
+ may use a COMPONENT_REF on the LHS. */
+ if (wi)
+ {
+ /* If the RHS is of a non-renamable type or is a register variable,
+ we may use a COMPONENT_REF on the LHS. */
+ tree rhs1 = gimple_assign_rhs1 (stmt);
+ wi->val_only
+ = (is_gimple_reg_type (TREE_TYPE (rhs1)) && !is_gimple_reg (rhs1))
+ || gimple_assign_rhs_class (stmt) != GIMPLE_SINGLE_RHS;
+ wi->is_lhs = true;
+ }
+
+ ret = walk_tree (gimple_op_ptr (stmt, 0), callback_op, wi, pset);
+ if (ret)
+ return ret;
+
+ if (wi)
+ {
+ wi->val_only = true;
+ wi->is_lhs = false;
+ }
+ break;
+
+ case GIMPLE_CALL:
+ if (wi)
+ {
+ wi->is_lhs = false;
+ wi->val_only = true;
+ }
+
+ ret = walk_tree (gimple_call_chain_ptr (stmt), callback_op, wi, pset);
+ if (ret)
+ return ret;
+
+ ret = walk_tree (gimple_call_fn_ptr (stmt), callback_op, wi, pset);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < gimple_call_num_args (stmt); i++)
+ {
+ if (wi)
+ wi->val_only
+ = is_gimple_reg_type (TREE_TYPE (gimple_call_arg (stmt, i)));
+ ret = walk_tree (gimple_call_arg_ptr (stmt, i), callback_op, wi,
+ pset);
+ if (ret)
+ return ret;
+ }
+
+ if (gimple_call_lhs (stmt))
+ {
+ if (wi)
+ {
+ wi->is_lhs = true;
+ wi->val_only
+ = is_gimple_reg_type (TREE_TYPE (gimple_call_lhs (stmt)));
+ }
+
+ ret = walk_tree (gimple_call_lhs_ptr (stmt), callback_op, wi, pset);
+ if (ret)
+ return ret;
+ }
+
+ if (wi)
+ {
+ wi->is_lhs = false;
+ wi->val_only = true;
+ }
+ break;
+
+ case GIMPLE_CATCH:
+ ret = walk_tree (gimple_catch_types_ptr (stmt), callback_op, wi,
+ pset);
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_EH_FILTER:
+ ret = walk_tree (gimple_eh_filter_types_ptr (stmt), callback_op, wi,
+ pset);
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_ASM:
+ ret = walk_gimple_asm (stmt, callback_op, wi);
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_OMP_CONTINUE:
+ ret = walk_tree (gimple_omp_continue_control_def_ptr (stmt),
+ callback_op, wi, pset);
+ if (ret)
+ return ret;
+
+ ret = walk_tree (gimple_omp_continue_control_use_ptr (stmt),
+ callback_op, wi, pset);
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_OMP_CRITICAL:
+ ret = walk_tree (gimple_omp_critical_name_ptr (stmt), callback_op, wi,
+ pset);
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_OMP_FOR:
+ ret = walk_tree (gimple_omp_for_clauses_ptr (stmt), callback_op, wi,
+ pset);
+ if (ret)
+ return ret;
+ for (i = 0; i < gimple_omp_for_collapse (stmt); i++)
+ {
+ ret = walk_tree (gimple_omp_for_index_ptr (stmt, i), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ ret = walk_tree (gimple_omp_for_initial_ptr (stmt, i), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ ret = walk_tree (gimple_omp_for_final_ptr (stmt, i), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ ret = walk_tree (gimple_omp_for_incr_ptr (stmt, i), callback_op,
+ wi, pset);
+ }
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_OMP_PARALLEL:
+ ret = walk_tree (gimple_omp_parallel_clauses_ptr (stmt), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ ret = walk_tree (gimple_omp_parallel_child_fn_ptr (stmt), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ ret = walk_tree (gimple_omp_parallel_data_arg_ptr (stmt), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_OMP_TASK:
+ ret = walk_tree (gimple_omp_task_clauses_ptr (stmt), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ ret = walk_tree (gimple_omp_task_child_fn_ptr (stmt), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ ret = walk_tree (gimple_omp_task_data_arg_ptr (stmt), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ ret = walk_tree (gimple_omp_task_copy_fn_ptr (stmt), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ ret = walk_tree (gimple_omp_task_arg_size_ptr (stmt), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ ret = walk_tree (gimple_omp_task_arg_align_ptr (stmt), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_OMP_SECTIONS:
+ ret = walk_tree (gimple_omp_sections_clauses_ptr (stmt), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+
+ ret = walk_tree (gimple_omp_sections_control_ptr (stmt), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+
+ break;
+
+ case GIMPLE_OMP_SINGLE:
+ ret = walk_tree (gimple_omp_single_clauses_ptr (stmt), callback_op, wi,
+ pset);
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_OMP_TARGET:
+ ret = walk_tree (gimple_omp_target_clauses_ptr (stmt), callback_op, wi,
+ pset);
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_OMP_TEAMS:
+ ret = walk_tree (gimple_omp_teams_clauses_ptr (stmt), callback_op, wi,
+ pset);
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_OMP_ATOMIC_LOAD:
+ ret = walk_tree (gimple_omp_atomic_load_lhs_ptr (stmt), callback_op, wi,
+ pset);
+ if (ret)
+ return ret;
+
+ ret = walk_tree (gimple_omp_atomic_load_rhs_ptr (stmt), callback_op, wi,
+ pset);
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_OMP_ATOMIC_STORE:
+ ret = walk_tree (gimple_omp_atomic_store_val_ptr (stmt), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_TRANSACTION:
+ ret = walk_tree (gimple_transaction_label_ptr (stmt), callback_op,
+ wi, pset);
+ if (ret)
+ return ret;
+ break;
+
+ case GIMPLE_OMP_RETURN:
+ ret = walk_tree (gimple_omp_return_lhs_ptr (stmt), callback_op, wi,
+ pset);
+ if (ret)
+ return ret;
+ break;
+
+ /* Tuples that do not have operands. */
+ case GIMPLE_NOP:
+ case GIMPLE_RESX:
+ case GIMPLE_PREDICT:
+ break;
+
+ default:
+ {
+ enum gimple_statement_structure_enum gss;
+ gss = gimple_statement_structure (stmt);
+ if (gss == GSS_WITH_OPS || gss == GSS_WITH_MEM_OPS)
+ for (i = 0; i < gimple_num_ops (stmt); i++)
+ {
+ ret = walk_tree (gimple_op_ptr (stmt, i), callback_op, wi, pset);
+ if (ret)
+ return ret;
+ }
+ }
+ break;
+ }
+
+ return NULL_TREE;
+ }
+
+
+ /* Walk the current statement in GSI (optionally using traversal state
+ stored in WI). If WI is NULL, no state is kept during traversal.
+ The callback CALLBACK_STMT is called. If CALLBACK_STMT indicates
+ that it has handled all the operands of the statement, its return
+ value is returned. Otherwise, the return value from CALLBACK_STMT
+ is discarded and its operands are scanned.
+
+ If CALLBACK_STMT is NULL or it didn't handle the operands,
+ CALLBACK_OP is called on each operand of the statement via
+ walk_gimple_op. If walk_gimple_op returns non-NULL for any
+ operand, the remaining operands are not scanned. In this case, the
+ return value from CALLBACK_OP is returned.
+
+ In any other case, NULL_TREE is returned. */
+
+ tree
+ walk_gimple_stmt (gimple_stmt_iterator *gsi, walk_stmt_fn callback_stmt,
+ walk_tree_fn callback_op, struct walk_stmt_info *wi)
+ {
+ gimple ret;
+ tree tree_ret;
+ gimple stmt = gsi_stmt (*gsi);
+
+ if (wi)
+ {
+ wi->gsi = *gsi;
+ wi->removed_stmt = false;
+
+ if (wi->want_locations && gimple_has_location (stmt))
+ input_location = gimple_location (stmt);
+ }
+
+ ret = NULL;
+
+ /* Invoke the statement callback. Return if the callback handled
+ all of STMT operands by itself. */
+ if (callback_stmt)
+ {
+ bool handled_ops = false;
+ tree_ret = callback_stmt (gsi, &handled_ops, wi);
+ if (handled_ops)
+ return tree_ret;
+
+ /* If CALLBACK_STMT did not handle operands, it should not have
+ a value to return. */
+ gcc_assert (tree_ret == NULL);
+
+ if (wi && wi->removed_stmt)
+ return NULL;
+
+ /* Re-read stmt in case the callback changed it. */
+ stmt = gsi_stmt (*gsi);
+ }
+
+ /* If CALLBACK_OP is defined, invoke it on every operand of STMT. */
+ if (callback_op)
+ {
+ tree_ret = walk_gimple_op (stmt, callback_op, wi);
+ if (tree_ret)
+ return tree_ret;
+ }
+
+ /* If STMT can have statements inside (e.g. GIMPLE_BIND), walk them. */
+ switch (gimple_code (stmt))
+ {
+ case GIMPLE_BIND:
+ ret = walk_gimple_seq_mod (gimple_bind_body_ptr (stmt), callback_stmt,
+ callback_op, wi);
+ if (ret)
+ return wi->callback_result;
+ break;
+
+ case GIMPLE_CATCH:
+ ret = walk_gimple_seq_mod (gimple_catch_handler_ptr (stmt), callback_stmt,
+ callback_op, wi);
+ if (ret)
+ return wi->callback_result;
+ break;
+
+ case GIMPLE_EH_FILTER:
+ ret = walk_gimple_seq_mod (gimple_eh_filter_failure_ptr (stmt), callback_stmt,
+ callback_op, wi);
+ if (ret)
+ return wi->callback_result;
+ break;
+
+ case GIMPLE_EH_ELSE:
+ ret = walk_gimple_seq_mod (gimple_eh_else_n_body_ptr (stmt),
+ callback_stmt, callback_op, wi);
+ if (ret)
+ return wi->callback_result;
+ ret = walk_gimple_seq_mod (gimple_eh_else_e_body_ptr (stmt),
+ callback_stmt, callback_op, wi);
+ if (ret)
+ return wi->callback_result;
+ break;
+
+ case GIMPLE_TRY:
+ ret = walk_gimple_seq_mod (gimple_try_eval_ptr (stmt), callback_stmt, callback_op,
+ wi);
+ if (ret)
+ return wi->callback_result;
+
+ ret = walk_gimple_seq_mod (gimple_try_cleanup_ptr (stmt), callback_stmt,
+ callback_op, wi);
+ if (ret)
+ return wi->callback_result;
+ break;
+
+ case GIMPLE_OMP_FOR:
+ ret = walk_gimple_seq_mod (gimple_omp_for_pre_body_ptr (stmt), callback_stmt,
+ callback_op, wi);
+ if (ret)
+ return wi->callback_result;
+
+ /* FALL THROUGH. */
+ case GIMPLE_OMP_CRITICAL:
+ case GIMPLE_OMP_MASTER:
+ case GIMPLE_OMP_TASKGROUP:
+ case GIMPLE_OMP_ORDERED:
+ case GIMPLE_OMP_SECTION:
+ case GIMPLE_OMP_PARALLEL:
+ case GIMPLE_OMP_TASK:
+ case GIMPLE_OMP_SECTIONS:
+ case GIMPLE_OMP_SINGLE:
+ case GIMPLE_OMP_TARGET:
+ case GIMPLE_OMP_TEAMS:
+ ret = walk_gimple_seq_mod (gimple_omp_body_ptr (stmt), callback_stmt,
+ callback_op, wi);
+ if (ret)
+ return wi->callback_result;
+ break;
+
+ case GIMPLE_WITH_CLEANUP_EXPR:
+ ret = walk_gimple_seq_mod (gimple_wce_cleanup_ptr (stmt), callback_stmt,
+ callback_op, wi);
+ if (ret)
+ return wi->callback_result;
+ break;
+
+ case GIMPLE_TRANSACTION:
+ ret = walk_gimple_seq_mod (gimple_transaction_body_ptr (stmt),
+ callback_stmt, callback_op, wi);
+ if (ret)
+ return wi->callback_result;
+ break;
+
+ default:
+ gcc_assert (!gimple_has_substatements (stmt));
+ break;
+ }
+
+ return NULL;
+ }
+
+ /* From a tree operand OP return the base of a load or store operation
+ or NULL_TREE if OP is not a load or a store. */
+
+ static tree
+ get_base_loadstore (tree op)
+ {
+ while (handled_component_p (op))
+ op = TREE_OPERAND (op, 0);
+ if (DECL_P (op)
+ || INDIRECT_REF_P (op)
+ || TREE_CODE (op) == MEM_REF
+ || TREE_CODE (op) == TARGET_MEM_REF)
+ return op;
+ return NULL_TREE;
+ }
+
+
+ /* For the statement STMT call the callbacks VISIT_LOAD, VISIT_STORE and
+ VISIT_ADDR if non-NULL on loads, store and address-taken operands
+ passing the STMT, the base of the operand and DATA to it. The base
+ will be either a decl, an indirect reference (including TARGET_MEM_REF)
+ or the argument of an address expression.
+ Returns the results of these callbacks or'ed. */
+
+ bool
+ walk_stmt_load_store_addr_ops (gimple stmt, void *data,
+ bool (*visit_load)(gimple, tree, void *),
+ bool (*visit_store)(gimple, tree, void *),
+ bool (*visit_addr)(gimple, tree, void *))
+ {
+ bool ret = false;
+ unsigned i;
+ if (gimple_assign_single_p (stmt))
+ {
+ tree lhs, rhs;
+ if (visit_store)
+ {
+ lhs = get_base_loadstore (gimple_assign_lhs (stmt));
+ if (lhs)
+ ret |= visit_store (stmt, lhs, data);
+ }
+ rhs = gimple_assign_rhs1 (stmt);
+ while (handled_component_p (rhs))
+ rhs = TREE_OPERAND (rhs, 0);
+ if (visit_addr)
+ {
+ if (TREE_CODE (rhs) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (rhs, 0), data);
+ else if (TREE_CODE (rhs) == TARGET_MEM_REF
+ && TREE_CODE (TMR_BASE (rhs)) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (TMR_BASE (rhs), 0), data);
+ else if (TREE_CODE (rhs) == OBJ_TYPE_REF
+ && TREE_CODE (OBJ_TYPE_REF_OBJECT (rhs)) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (OBJ_TYPE_REF_OBJECT (rhs),
+ 0), data);
+ else if (TREE_CODE (rhs) == CONSTRUCTOR)
+ {
+ unsigned int ix;
+ tree val;
+
+ FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (rhs), ix, val)
+ if (TREE_CODE (val) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (val, 0), data);
+ else if (TREE_CODE (val) == OBJ_TYPE_REF
+ && TREE_CODE (OBJ_TYPE_REF_OBJECT (val)) == ADDR_EXPR)
+ ret |= visit_addr (stmt,
+ TREE_OPERAND (OBJ_TYPE_REF_OBJECT (val),
+ 0), data);
+ }
+ lhs = gimple_assign_lhs (stmt);
+ if (TREE_CODE (lhs) == TARGET_MEM_REF
+ && TREE_CODE (TMR_BASE (lhs)) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (TMR_BASE (lhs), 0), data);
+ }
+ if (visit_load)
+ {
+ rhs = get_base_loadstore (rhs);
+ if (rhs)
+ ret |= visit_load (stmt, rhs, data);
+ }
+ }
+ else if (visit_addr
+ && (is_gimple_assign (stmt)
+ || gimple_code (stmt) == GIMPLE_COND))
+ {
+ for (i = 0; i < gimple_num_ops (stmt); ++i)
+ {
+ tree op = gimple_op (stmt, i);
+ if (op == NULL_TREE)
+ ;
+ else if (TREE_CODE (op) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data);
+ /* COND_EXPR and VCOND_EXPR rhs1 argument is a comparison
+ tree with two operands. */
+ else if (i == 1 && COMPARISON_CLASS_P (op))
+ {
+ if (TREE_CODE (TREE_OPERAND (op, 0)) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (TREE_OPERAND (op, 0),
+ 0), data);
+ if (TREE_CODE (TREE_OPERAND (op, 1)) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (TREE_OPERAND (op, 1),
+ 0), data);
+ }
+ }
+ }
+ else if (is_gimple_call (stmt))
+ {
+ if (visit_store)
+ {
+ tree lhs = gimple_call_lhs (stmt);
+ if (lhs)
+ {
+ lhs = get_base_loadstore (lhs);
+ if (lhs)
+ ret |= visit_store (stmt, lhs, data);
+ }
+ }
+ if (visit_load || visit_addr)
+ for (i = 0; i < gimple_call_num_args (stmt); ++i)
+ {
+ tree rhs = gimple_call_arg (stmt, i);
+ if (visit_addr
+ && TREE_CODE (rhs) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (rhs, 0), data);
+ else if (visit_load)
+ {
+ rhs = get_base_loadstore (rhs);
+ if (rhs)
+ ret |= visit_load (stmt, rhs, data);
+ }
+ }
+ if (visit_addr
+ && gimple_call_chain (stmt)
+ && TREE_CODE (gimple_call_chain (stmt)) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (gimple_call_chain (stmt), 0),
+ data);
+ if (visit_addr
+ && gimple_call_return_slot_opt_p (stmt)
+ && gimple_call_lhs (stmt) != NULL_TREE
+ && TREE_ADDRESSABLE (TREE_TYPE (gimple_call_lhs (stmt))))
+ ret |= visit_addr (stmt, gimple_call_lhs (stmt), data);
+ }
+ else if (gimple_code (stmt) == GIMPLE_ASM)
+ {
+ unsigned noutputs;
+ const char *constraint;
+ const char **oconstraints;
+ bool allows_mem, allows_reg, is_inout;
+ noutputs = gimple_asm_noutputs (stmt);
+ oconstraints = XALLOCAVEC (const char *, noutputs);
+ if (visit_store || visit_addr)
+ for (i = 0; i < gimple_asm_noutputs (stmt); ++i)
+ {
+ tree link = gimple_asm_output_op (stmt, i);
+ tree op = get_base_loadstore (TREE_VALUE (link));
+ if (op && visit_store)
+ ret |= visit_store (stmt, op, data);
+ if (visit_addr)
+ {
+ constraint = TREE_STRING_POINTER
+ (TREE_VALUE (TREE_PURPOSE (link)));
+ oconstraints[i] = constraint;
+ parse_output_constraint (&constraint, i, 0, 0, &allows_mem,
+ &allows_reg, &is_inout);
+ if (op && !allows_reg && allows_mem)
+ ret |= visit_addr (stmt, op, data);
+ }
+ }
+ if (visit_load || visit_addr)
+ for (i = 0; i < gimple_asm_ninputs (stmt); ++i)
+ {
+ tree link = gimple_asm_input_op (stmt, i);
+ tree op = TREE_VALUE (link);
+ if (visit_addr
+ && TREE_CODE (op) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data);
+ else if (visit_load || visit_addr)
+ {
+ op = get_base_loadstore (op);
+ if (op)
+ {
+ if (visit_load)
+ ret |= visit_load (stmt, op, data);
+ if (visit_addr)
+ {
+ constraint = TREE_STRING_POINTER
+ (TREE_VALUE (TREE_PURPOSE (link)));
+ parse_input_constraint (&constraint, 0, 0, noutputs,
+ 0, oconstraints,
+ &allows_mem, &allows_reg);
+ if (!allows_reg && allows_mem)
+ ret |= visit_addr (stmt, op, data);
+ }
+ }
+ }
+ }
+ }
+ else if (gimple_code (stmt) == GIMPLE_RETURN)
+ {
+ tree op = gimple_return_retval (stmt);
+ if (op)
+ {
+ if (visit_addr
+ && TREE_CODE (op) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data);
+ else if (visit_load)
+ {
+ op = get_base_loadstore (op);
+ if (op)
+ ret |= visit_load (stmt, op, data);
+ }
+ }
+ }
+ else if (visit_addr
+ && gimple_code (stmt) == GIMPLE_PHI)
+ {
+ for (i = 0; i < gimple_phi_num_args (stmt); ++i)
+ {
+ tree op = gimple_phi_arg_def (stmt, i);
+ if (TREE_CODE (op) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data);
+ }
+ }
+ else if (visit_addr
+ && gimple_code (stmt) == GIMPLE_GOTO)
+ {
+ tree op = gimple_goto_dest (stmt);
+ if (TREE_CODE (op) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data);
+ }
+
+ return ret;
+ }
+
+ /* Like walk_stmt_load_store_addr_ops but with NULL visit_addr. IPA-CP
+ should make a faster clone for this case. */
+
+ bool
+ walk_stmt_load_store_ops (gimple stmt, void *data,
+ bool (*visit_load)(gimple, tree, void *),
+ bool (*visit_store)(gimple, tree, void *))
+ {
+ return walk_stmt_load_store_addr_ops (stmt, data,
+ visit_load, visit_store, NULL);
+ }
===================================================================
*************** along with GCC; see the file COPYING3.
#include "tm.h"
#include "tree.h"
#include "gimple.h"
+ #include "gimple-iterator.h"
#include "gimple-ssa.h"
#include "cgraph.h"
#include "tree-cfg.h"
===================================================================
*************** along with GCC; see the file COPYING3.
#include "hard-reg-set.h"
#include "basic-block.h"
#include "gimple.h"
+ #include "gimple-iterator.h"
+ #include "gimple-walk.h"
#include "gimplify.h"
#include "diagnostic.h"
#include "value-prof.h"
*************** gimple_seq_copy (gimple_seq src)
}
- /* Walk all the statements in the sequence *PSEQ calling walk_gimple_stmt
- on each one. WI is as in walk_gimple_stmt.
-
- If walk_gimple_stmt returns non-NULL, the walk is stopped, and the
- value is stored in WI->CALLBACK_RESULT. Also, the statement that
- produced the value is returned if this statement has not been
- removed by a callback (wi->removed_stmt). If the statement has
- been removed, NULL is returned.
-
- Otherwise, all the statements are walked and NULL returned. */
-
- gimple
- walk_gimple_seq_mod (gimple_seq *pseq, walk_stmt_fn callback_stmt,
- walk_tree_fn callback_op, struct walk_stmt_info *wi)
- {
- gimple_stmt_iterator gsi;
-
- for (gsi = gsi_start (*pseq); !gsi_end_p (gsi); )
- {
- tree ret = walk_gimple_stmt (&gsi, callback_stmt, callback_op, wi);
- if (ret)
- {
- /* If CALLBACK_STMT or CALLBACK_OP return a value, WI must exist
- to hold it. */
- gcc_assert (wi);
- wi->callback_result = ret;
-
- return wi->removed_stmt ? NULL : gsi_stmt (gsi);
- }
-
- if (!wi->removed_stmt)
- gsi_next (&gsi);
- }
-
- if (wi)
- wi->callback_result = NULL_TREE;
-
- return NULL;
- }
-
-
- /* Like walk_gimple_seq_mod, but ensure that the head of SEQ isn't
- changed by the callbacks. */
-
- gimple
- walk_gimple_seq (gimple_seq seq, walk_stmt_fn callback_stmt,
- walk_tree_fn callback_op, struct walk_stmt_info *wi)
- {
- gimple_seq seq2 = seq;
- gimple ret = walk_gimple_seq_mod (&seq2, callback_stmt, callback_op, wi);
- gcc_assert (seq2 == seq);
- return ret;
- }
-
-
- /* Helper function for walk_gimple_stmt. Walk operands of a GIMPLE_ASM. */
-
- static tree
- walk_gimple_asm (gimple stmt, walk_tree_fn callback_op,
- struct walk_stmt_info *wi)
- {
- tree ret, op;
- unsigned noutputs;
- const char **oconstraints;
- unsigned i, n;
- const char *constraint;
- bool allows_mem, allows_reg, is_inout;
-
- noutputs = gimple_asm_noutputs (stmt);
- oconstraints = (const char **) alloca ((noutputs) * sizeof (const char *));
-
- if (wi)
- wi->is_lhs = true;
-
- for (i = 0; i < noutputs; i++)
- {
- op = gimple_asm_output_op (stmt, i);
- constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (op)));
- oconstraints[i] = constraint;
- parse_output_constraint (&constraint, i, 0, 0, &allows_mem, &allows_reg,
- &is_inout);
- if (wi)
- wi->val_only = (allows_reg || !allows_mem);
- ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL);
- if (ret)
- return ret;
- }
-
- n = gimple_asm_ninputs (stmt);
- for (i = 0; i < n; i++)
- {
- op = gimple_asm_input_op (stmt, i);
- constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (op)));
- parse_input_constraint (&constraint, 0, 0, noutputs, 0,
- oconstraints, &allows_mem, &allows_reg);
- if (wi)
- {
- wi->val_only = (allows_reg || !allows_mem);
- /* Although input "m" is not really a LHS, we need a lvalue. */
- wi->is_lhs = !wi->val_only;
- }
- ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL);
- if (ret)
- return ret;
- }
-
- if (wi)
- {
- wi->is_lhs = false;
- wi->val_only = true;
- }
-
- n = gimple_asm_nlabels (stmt);
- for (i = 0; i < n; i++)
- {
- op = gimple_asm_label_op (stmt, i);
- ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL);
- if (ret)
- return ret;
- }
-
- return NULL_TREE;
- }
-
-
- /* Helper function of WALK_GIMPLE_STMT. Walk every tree operand in
- STMT. CALLBACK_OP and WI are as in WALK_GIMPLE_STMT.
-
- CALLBACK_OP is called on each operand of STMT via walk_tree.
- Additional parameters to walk_tree must be stored in WI. For each operand
- OP, walk_tree is called as:
-
- walk_tree (&OP, CALLBACK_OP, WI, WI->PSET)
-
- If CALLBACK_OP returns non-NULL for an operand, the remaining
- operands are not scanned.
-
- The return value is that returned by the last call to walk_tree, or
- NULL_TREE if no CALLBACK_OP is specified. */
-
- tree
- walk_gimple_op (gimple stmt, walk_tree_fn callback_op,
- struct walk_stmt_info *wi)
- {
- struct pointer_set_t *pset = (wi) ? wi->pset : NULL;
- unsigned i;
- tree ret = NULL_TREE;
-
- switch (gimple_code (stmt))
- {
- case GIMPLE_ASSIGN:
- /* Walk the RHS operands. If the LHS is of a non-renamable type or
- is a register variable, we may use a COMPONENT_REF on the RHS. */
- if (wi)
- {
- tree lhs = gimple_assign_lhs (stmt);
- wi->val_only
- = (is_gimple_reg_type (TREE_TYPE (lhs)) && !is_gimple_reg (lhs))
- || gimple_assign_rhs_class (stmt) != GIMPLE_SINGLE_RHS;
- }
-
- for (i = 1; i < gimple_num_ops (stmt); i++)
- {
- ret = walk_tree (gimple_op_ptr (stmt, i), callback_op, wi,
- pset);
- if (ret)
- return ret;
- }
-
- /* Walk the LHS. If the RHS is appropriate for a memory, we
- may use a COMPONENT_REF on the LHS. */
- if (wi)
- {
- /* If the RHS is of a non-renamable type or is a register variable,
- we may use a COMPONENT_REF on the LHS. */
- tree rhs1 = gimple_assign_rhs1 (stmt);
- wi->val_only
- = (is_gimple_reg_type (TREE_TYPE (rhs1)) && !is_gimple_reg (rhs1))
- || gimple_assign_rhs_class (stmt) != GIMPLE_SINGLE_RHS;
- wi->is_lhs = true;
- }
-
- ret = walk_tree (gimple_op_ptr (stmt, 0), callback_op, wi, pset);
- if (ret)
- return ret;
-
- if (wi)
- {
- wi->val_only = true;
- wi->is_lhs = false;
- }
- break;
-
- case GIMPLE_CALL:
- if (wi)
- {
- wi->is_lhs = false;
- wi->val_only = true;
- }
-
- ret = walk_tree (gimple_call_chain_ptr (stmt), callback_op, wi, pset);
- if (ret)
- return ret;
-
- ret = walk_tree (gimple_call_fn_ptr (stmt), callback_op, wi, pset);
- if (ret)
- return ret;
-
- for (i = 0; i < gimple_call_num_args (stmt); i++)
- {
- if (wi)
- wi->val_only
- = is_gimple_reg_type (TREE_TYPE (gimple_call_arg (stmt, i)));
- ret = walk_tree (gimple_call_arg_ptr (stmt, i), callback_op, wi,
- pset);
- if (ret)
- return ret;
- }
-
- if (gimple_call_lhs (stmt))
- {
- if (wi)
- {
- wi->is_lhs = true;
- wi->val_only
- = is_gimple_reg_type (TREE_TYPE (gimple_call_lhs (stmt)));
- }
-
- ret = walk_tree (gimple_call_lhs_ptr (stmt), callback_op, wi, pset);
- if (ret)
- return ret;
- }
-
- if (wi)
- {
- wi->is_lhs = false;
- wi->val_only = true;
- }
- break;
-
- case GIMPLE_CATCH:
- ret = walk_tree (gimple_catch_types_ptr (stmt), callback_op, wi,
- pset);
- if (ret)
- return ret;
- break;
-
- case GIMPLE_EH_FILTER:
- ret = walk_tree (gimple_eh_filter_types_ptr (stmt), callback_op, wi,
- pset);
- if (ret)
- return ret;
- break;
-
- case GIMPLE_ASM:
- ret = walk_gimple_asm (stmt, callback_op, wi);
- if (ret)
- return ret;
- break;
-
- case GIMPLE_OMP_CONTINUE:
- ret = walk_tree (gimple_omp_continue_control_def_ptr (stmt),
- callback_op, wi, pset);
- if (ret)
- return ret;
-
- ret = walk_tree (gimple_omp_continue_control_use_ptr (stmt),
- callback_op, wi, pset);
- if (ret)
- return ret;
- break;
-
- case GIMPLE_OMP_CRITICAL:
- ret = walk_tree (gimple_omp_critical_name_ptr (stmt), callback_op, wi,
- pset);
- if (ret)
- return ret;
- break;
-
- case GIMPLE_OMP_FOR:
- ret = walk_tree (gimple_omp_for_clauses_ptr (stmt), callback_op, wi,
- pset);
- if (ret)
- return ret;
- for (i = 0; i < gimple_omp_for_collapse (stmt); i++)
- {
- ret = walk_tree (gimple_omp_for_index_ptr (stmt, i), callback_op,
- wi, pset);
- if (ret)
- return ret;
- ret = walk_tree (gimple_omp_for_initial_ptr (stmt, i), callback_op,
- wi, pset);
- if (ret)
- return ret;
- ret = walk_tree (gimple_omp_for_final_ptr (stmt, i), callback_op,
- wi, pset);
- if (ret)
- return ret;
- ret = walk_tree (gimple_omp_for_incr_ptr (stmt, i), callback_op,
- wi, pset);
- }
- if (ret)
- return ret;
- break;
-
- case GIMPLE_OMP_PARALLEL:
- ret = walk_tree (gimple_omp_parallel_clauses_ptr (stmt), callback_op,
- wi, pset);
- if (ret)
- return ret;
- ret = walk_tree (gimple_omp_parallel_child_fn_ptr (stmt), callback_op,
- wi, pset);
- if (ret)
- return ret;
- ret = walk_tree (gimple_omp_parallel_data_arg_ptr (stmt), callback_op,
- wi, pset);
- if (ret)
- return ret;
- break;
-
- case GIMPLE_OMP_TASK:
- ret = walk_tree (gimple_omp_task_clauses_ptr (stmt), callback_op,
- wi, pset);
- if (ret)
- return ret;
- ret = walk_tree (gimple_omp_task_child_fn_ptr (stmt), callback_op,
- wi, pset);
- if (ret)
- return ret;
- ret = walk_tree (gimple_omp_task_data_arg_ptr (stmt), callback_op,
- wi, pset);
- if (ret)
- return ret;
- ret = walk_tree (gimple_omp_task_copy_fn_ptr (stmt), callback_op,
- wi, pset);
- if (ret)
- return ret;
- ret = walk_tree (gimple_omp_task_arg_size_ptr (stmt), callback_op,
- wi, pset);
- if (ret)
- return ret;
- ret = walk_tree (gimple_omp_task_arg_align_ptr (stmt), callback_op,
- wi, pset);
- if (ret)
- return ret;
- break;
-
- case GIMPLE_OMP_SECTIONS:
- ret = walk_tree (gimple_omp_sections_clauses_ptr (stmt), callback_op,
- wi, pset);
- if (ret)
- return ret;
-
- ret = walk_tree (gimple_omp_sections_control_ptr (stmt), callback_op,
- wi, pset);
- if (ret)
- return ret;
-
- break;
-
- case GIMPLE_OMP_SINGLE:
- ret = walk_tree (gimple_omp_single_clauses_ptr (stmt), callback_op, wi,
- pset);
- if (ret)
- return ret;
- break;
-
- case GIMPLE_OMP_TARGET:
- ret = walk_tree (gimple_omp_target_clauses_ptr (stmt), callback_op, wi,
- pset);
- if (ret)
- return ret;
- break;
-
- case GIMPLE_OMP_TEAMS:
- ret = walk_tree (gimple_omp_teams_clauses_ptr (stmt), callback_op, wi,
- pset);
- if (ret)
- return ret;
- break;
-
- case GIMPLE_OMP_ATOMIC_LOAD:
- ret = walk_tree (gimple_omp_atomic_load_lhs_ptr (stmt), callback_op, wi,
- pset);
- if (ret)
- return ret;
-
- ret = walk_tree (gimple_omp_atomic_load_rhs_ptr (stmt), callback_op, wi,
- pset);
- if (ret)
- return ret;
- break;
-
- case GIMPLE_OMP_ATOMIC_STORE:
- ret = walk_tree (gimple_omp_atomic_store_val_ptr (stmt), callback_op,
- wi, pset);
- if (ret)
- return ret;
- break;
-
- case GIMPLE_TRANSACTION:
- ret = walk_tree (gimple_transaction_label_ptr (stmt), callback_op,
- wi, pset);
- if (ret)
- return ret;
- break;
-
- case GIMPLE_OMP_RETURN:
- ret = walk_tree (gimple_omp_return_lhs_ptr (stmt), callback_op, wi,
- pset);
- if (ret)
- return ret;
- break;
-
- /* Tuples that do not have operands. */
- case GIMPLE_NOP:
- case GIMPLE_RESX:
- case GIMPLE_PREDICT:
- break;
-
- default:
- {
- enum gimple_statement_structure_enum gss;
- gss = gimple_statement_structure (stmt);
- if (gss == GSS_WITH_OPS || gss == GSS_WITH_MEM_OPS)
- for (i = 0; i < gimple_num_ops (stmt); i++)
- {
- ret = walk_tree (gimple_op_ptr (stmt, i), callback_op, wi, pset);
- if (ret)
- return ret;
- }
- }
- break;
- }
-
- return NULL_TREE;
- }
-
-
- /* Walk the current statement in GSI (optionally using traversal state
- stored in WI). If WI is NULL, no state is kept during traversal.
- The callback CALLBACK_STMT is called. If CALLBACK_STMT indicates
- that it has handled all the operands of the statement, its return
- value is returned. Otherwise, the return value from CALLBACK_STMT
- is discarded and its operands are scanned.
-
- If CALLBACK_STMT is NULL or it didn't handle the operands,
- CALLBACK_OP is called on each operand of the statement via
- walk_gimple_op. If walk_gimple_op returns non-NULL for any
- operand, the remaining operands are not scanned. In this case, the
- return value from CALLBACK_OP is returned.
-
- In any other case, NULL_TREE is returned. */
-
- tree
- walk_gimple_stmt (gimple_stmt_iterator *gsi, walk_stmt_fn callback_stmt,
- walk_tree_fn callback_op, struct walk_stmt_info *wi)
- {
- gimple ret;
- tree tree_ret;
- gimple stmt = gsi_stmt (*gsi);
-
- if (wi)
- {
- wi->gsi = *gsi;
- wi->removed_stmt = false;
-
- if (wi->want_locations && gimple_has_location (stmt))
- input_location = gimple_location (stmt);
- }
-
- ret = NULL;
-
- /* Invoke the statement callback. Return if the callback handled
- all of STMT operands by itself. */
- if (callback_stmt)
- {
- bool handled_ops = false;
- tree_ret = callback_stmt (gsi, &handled_ops, wi);
- if (handled_ops)
- return tree_ret;
-
- /* If CALLBACK_STMT did not handle operands, it should not have
- a value to return. */
- gcc_assert (tree_ret == NULL);
-
- if (wi && wi->removed_stmt)
- return NULL;
-
- /* Re-read stmt in case the callback changed it. */
- stmt = gsi_stmt (*gsi);
- }
-
- /* If CALLBACK_OP is defined, invoke it on every operand of STMT. */
- if (callback_op)
- {
- tree_ret = walk_gimple_op (stmt, callback_op, wi);
- if (tree_ret)
- return tree_ret;
- }
-
- /* If STMT can have statements inside (e.g. GIMPLE_BIND), walk them. */
- switch (gimple_code (stmt))
- {
- case GIMPLE_BIND:
- ret = walk_gimple_seq_mod (gimple_bind_body_ptr (stmt), callback_stmt,
- callback_op, wi);
- if (ret)
- return wi->callback_result;
- break;
-
- case GIMPLE_CATCH:
- ret = walk_gimple_seq_mod (gimple_catch_handler_ptr (stmt), callback_stmt,
- callback_op, wi);
- if (ret)
- return wi->callback_result;
- break;
-
- case GIMPLE_EH_FILTER:
- ret = walk_gimple_seq_mod (gimple_eh_filter_failure_ptr (stmt), callback_stmt,
- callback_op, wi);
- if (ret)
- return wi->callback_result;
- break;
-
- case GIMPLE_EH_ELSE:
- ret = walk_gimple_seq_mod (gimple_eh_else_n_body_ptr (stmt),
- callback_stmt, callback_op, wi);
- if (ret)
- return wi->callback_result;
- ret = walk_gimple_seq_mod (gimple_eh_else_e_body_ptr (stmt),
- callback_stmt, callback_op, wi);
- if (ret)
- return wi->callback_result;
- break;
-
- case GIMPLE_TRY:
- ret = walk_gimple_seq_mod (gimple_try_eval_ptr (stmt), callback_stmt, callback_op,
- wi);
- if (ret)
- return wi->callback_result;
-
- ret = walk_gimple_seq_mod (gimple_try_cleanup_ptr (stmt), callback_stmt,
- callback_op, wi);
- if (ret)
- return wi->callback_result;
- break;
-
- case GIMPLE_OMP_FOR:
- ret = walk_gimple_seq_mod (gimple_omp_for_pre_body_ptr (stmt), callback_stmt,
- callback_op, wi);
- if (ret)
- return wi->callback_result;
-
- /* FALL THROUGH. */
- case GIMPLE_OMP_CRITICAL:
- case GIMPLE_OMP_MASTER:
- case GIMPLE_OMP_TASKGROUP:
- case GIMPLE_OMP_ORDERED:
- case GIMPLE_OMP_SECTION:
- case GIMPLE_OMP_PARALLEL:
- case GIMPLE_OMP_TASK:
- case GIMPLE_OMP_SECTIONS:
- case GIMPLE_OMP_SINGLE:
- case GIMPLE_OMP_TARGET:
- case GIMPLE_OMP_TEAMS:
- ret = walk_gimple_seq_mod (gimple_omp_body_ptr (stmt), callback_stmt,
- callback_op, wi);
- if (ret)
- return wi->callback_result;
- break;
-
- case GIMPLE_WITH_CLEANUP_EXPR:
- ret = walk_gimple_seq_mod (gimple_wce_cleanup_ptr (stmt), callback_stmt,
- callback_op, wi);
- if (ret)
- return wi->callback_result;
- break;
-
- case GIMPLE_TRANSACTION:
- ret = walk_gimple_seq_mod (gimple_transaction_body_ptr (stmt),
- callback_stmt, callback_op, wi);
- if (ret)
- return wi->callback_result;
- break;
-
- default:
- gcc_assert (!gimple_has_substatements (stmt));
- break;
- }
-
- return NULL;
- }
-
/* Return true if calls C1 and C2 are known to go to the same function. */
*************** gimple_get_alias_set (tree t)
}
- /* From a tree operand OP return the base of a load or store operation
- or NULL_TREE if OP is not a load or a store. */
-
- static tree
- get_base_loadstore (tree op)
- {
- while (handled_component_p (op))
- op = TREE_OPERAND (op, 0);
- if (DECL_P (op)
- || INDIRECT_REF_P (op)
- || TREE_CODE (op) == MEM_REF
- || TREE_CODE (op) == TARGET_MEM_REF)
- return op;
- return NULL_TREE;
- }
-
- /* For the statement STMT call the callbacks VISIT_LOAD, VISIT_STORE and
- VISIT_ADDR if non-NULL on loads, store and address-taken operands
- passing the STMT, the base of the operand and DATA to it. The base
- will be either a decl, an indirect reference (including TARGET_MEM_REF)
- or the argument of an address expression.
- Returns the results of these callbacks or'ed. */
-
- bool
- walk_stmt_load_store_addr_ops (gimple stmt, void *data,
- bool (*visit_load)(gimple, tree, void *),
- bool (*visit_store)(gimple, tree, void *),
- bool (*visit_addr)(gimple, tree, void *))
- {
- bool ret = false;
- unsigned i;
- if (gimple_assign_single_p (stmt))
- {
- tree lhs, rhs;
- if (visit_store)
- {
- lhs = get_base_loadstore (gimple_assign_lhs (stmt));
- if (lhs)
- ret |= visit_store (stmt, lhs, data);
- }
- rhs = gimple_assign_rhs1 (stmt);
- while (handled_component_p (rhs))
- rhs = TREE_OPERAND (rhs, 0);
- if (visit_addr)
- {
- if (TREE_CODE (rhs) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (rhs, 0), data);
- else if (TREE_CODE (rhs) == TARGET_MEM_REF
- && TREE_CODE (TMR_BASE (rhs)) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (TMR_BASE (rhs), 0), data);
- else if (TREE_CODE (rhs) == OBJ_TYPE_REF
- && TREE_CODE (OBJ_TYPE_REF_OBJECT (rhs)) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (OBJ_TYPE_REF_OBJECT (rhs),
- 0), data);
- else if (TREE_CODE (rhs) == CONSTRUCTOR)
- {
- unsigned int ix;
- tree val;
-
- FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (rhs), ix, val)
- if (TREE_CODE (val) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (val, 0), data);
- else if (TREE_CODE (val) == OBJ_TYPE_REF
- && TREE_CODE (OBJ_TYPE_REF_OBJECT (val)) == ADDR_EXPR)
- ret |= visit_addr (stmt,
- TREE_OPERAND (OBJ_TYPE_REF_OBJECT (val),
- 0), data);
- }
- lhs = gimple_assign_lhs (stmt);
- if (TREE_CODE (lhs) == TARGET_MEM_REF
- && TREE_CODE (TMR_BASE (lhs)) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (TMR_BASE (lhs), 0), data);
- }
- if (visit_load)
- {
- rhs = get_base_loadstore (rhs);
- if (rhs)
- ret |= visit_load (stmt, rhs, data);
- }
- }
- else if (visit_addr
- && (is_gimple_assign (stmt)
- || gimple_code (stmt) == GIMPLE_COND))
- {
- for (i = 0; i < gimple_num_ops (stmt); ++i)
- {
- tree op = gimple_op (stmt, i);
- if (op == NULL_TREE)
- ;
- else if (TREE_CODE (op) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data);
- /* COND_EXPR and VCOND_EXPR rhs1 argument is a comparison
- tree with two operands. */
- else if (i == 1 && COMPARISON_CLASS_P (op))
- {
- if (TREE_CODE (TREE_OPERAND (op, 0)) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (TREE_OPERAND (op, 0),
- 0), data);
- if (TREE_CODE (TREE_OPERAND (op, 1)) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (TREE_OPERAND (op, 1),
- 0), data);
- }
- }
- }
- else if (is_gimple_call (stmt))
- {
- if (visit_store)
- {
- tree lhs = gimple_call_lhs (stmt);
- if (lhs)
- {
- lhs = get_base_loadstore (lhs);
- if (lhs)
- ret |= visit_store (stmt, lhs, data);
- }
- }
- if (visit_load || visit_addr)
- for (i = 0; i < gimple_call_num_args (stmt); ++i)
- {
- tree rhs = gimple_call_arg (stmt, i);
- if (visit_addr
- && TREE_CODE (rhs) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (rhs, 0), data);
- else if (visit_load)
- {
- rhs = get_base_loadstore (rhs);
- if (rhs)
- ret |= visit_load (stmt, rhs, data);
- }
- }
- if (visit_addr
- && gimple_call_chain (stmt)
- && TREE_CODE (gimple_call_chain (stmt)) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (gimple_call_chain (stmt), 0),
- data);
- if (visit_addr
- && gimple_call_return_slot_opt_p (stmt)
- && gimple_call_lhs (stmt) != NULL_TREE
- && TREE_ADDRESSABLE (TREE_TYPE (gimple_call_lhs (stmt))))
- ret |= visit_addr (stmt, gimple_call_lhs (stmt), data);
- }
- else if (gimple_code (stmt) == GIMPLE_ASM)
- {
- unsigned noutputs;
- const char *constraint;
- const char **oconstraints;
- bool allows_mem, allows_reg, is_inout;
- noutputs = gimple_asm_noutputs (stmt);
- oconstraints = XALLOCAVEC (const char *, noutputs);
- if (visit_store || visit_addr)
- for (i = 0; i < gimple_asm_noutputs (stmt); ++i)
- {
- tree link = gimple_asm_output_op (stmt, i);
- tree op = get_base_loadstore (TREE_VALUE (link));
- if (op && visit_store)
- ret |= visit_store (stmt, op, data);
- if (visit_addr)
- {
- constraint = TREE_STRING_POINTER
- (TREE_VALUE (TREE_PURPOSE (link)));
- oconstraints[i] = constraint;
- parse_output_constraint (&constraint, i, 0, 0, &allows_mem,
- &allows_reg, &is_inout);
- if (op && !allows_reg && allows_mem)
- ret |= visit_addr (stmt, op, data);
- }
- }
- if (visit_load || visit_addr)
- for (i = 0; i < gimple_asm_ninputs (stmt); ++i)
- {
- tree link = gimple_asm_input_op (stmt, i);
- tree op = TREE_VALUE (link);
- if (visit_addr
- && TREE_CODE (op) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data);
- else if (visit_load || visit_addr)
- {
- op = get_base_loadstore (op);
- if (op)
- {
- if (visit_load)
- ret |= visit_load (stmt, op, data);
- if (visit_addr)
- {
- constraint = TREE_STRING_POINTER
- (TREE_VALUE (TREE_PURPOSE (link)));
- parse_input_constraint (&constraint, 0, 0, noutputs,
- 0, oconstraints,
- &allows_mem, &allows_reg);
- if (!allows_reg && allows_mem)
- ret |= visit_addr (stmt, op, data);
- }
- }
- }
- }
- }
- else if (gimple_code (stmt) == GIMPLE_RETURN)
- {
- tree op = gimple_return_retval (stmt);
- if (op)
- {
- if (visit_addr
- && TREE_CODE (op) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data);
- else if (visit_load)
- {
- op = get_base_loadstore (op);
- if (op)
- ret |= visit_load (stmt, op, data);
- }
- }
- }
- else if (visit_addr
- && gimple_code (stmt) == GIMPLE_PHI)
- {
- for (i = 0; i < gimple_phi_num_args (stmt); ++i)
- {
- tree op = gimple_phi_arg_def (stmt, i);
- if (TREE_CODE (op) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data);
- }
- }
- else if (visit_addr
- && gimple_code (stmt) == GIMPLE_GOTO)
- {
- tree op = gimple_goto_dest (stmt);
- if (TREE_CODE (op) == ADDR_EXPR)
- ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data);
- }
-
- return ret;
- }
-
- /* Like walk_stmt_load_store_addr_ops but with NULL visit_addr. IPA-CP
- should make a faster clone for this case. */
-
- bool
- walk_stmt_load_store_ops (gimple stmt, void *data,
- bool (*visit_load)(gimple, tree, void *),
- bool (*visit_store)(gimple, tree, void *))
- {
- return walk_stmt_load_store_addr_ops (stmt, data,
- visit_load, visit_store, NULL);
- }
-
/* Helper for gimple_ior_addresses_taken_1. */
static bool
*************** preprocess_case_label_vec_for_gimple (ve
if (default_casep)
*default_casep = default_case;
}
+
+ /* Set the location of all statements in SEQ to LOC. */
+
+ void
+ gimple_seq_set_location (gimple_seq seq, location_t loc)
+ {
+ for (gimple_stmt_iterator i = gsi_start (seq); !gsi_end_p (i); gsi_next (&i))
+ gimple_set_location (gsi_stmt (i), loc);
+ }
===================================================================
*************** extern void remove_phi_args (edge);
extern void remove_phi_node (gimple_stmt_iterator *, bool);
extern void remove_phi_nodes (basic_block);
extern tree degenerate_phi_result (gimple);
!
! /* Set PHI nodes of a basic block BB to SEQ. */
!
! static inline void
! set_phi_nodes (basic_block bb, gimple_seq seq)
! {
! gimple_stmt_iterator i;
!
! gcc_checking_assert (!(bb->flags & BB_RTL));
! bb->il.gimple.phi_nodes = seq;
! if (seq)
! for (i = gsi_start (seq); !gsi_end_p (i); gsi_next (&i))
! gimple_set_bb (gsi_stmt (i), bb);
! }
!
static inline use_operand_p
gimple_phi_arg_imm_use_ptr (gimple gs, int i)
extern void remove_phi_node (gimple_stmt_iterator *, bool);
extern void remove_phi_nodes (basic_block);
extern tree degenerate_phi_result (gimple);
! extern void set_phi_nodes (basic_block, gimple_seq);
static inline use_operand_p
gimple_phi_arg_imm_use_ptr (gimple gs, int i)
===================================================================
*************** along with GCC; see the file COPYING3.
#include "ggc.h"
#include "basic-block.h"
#include "gimple.h"
+ #include "gimple-iterator.h"
#include "gimple-ssa.h"
#include "tree-phinodes.h"
#include "ssa-iterators.h"
*************** degenerate_phi_result (gimple phi)
return (i == gimple_phi_num_args (phi) ? val : NULL);
}
+ /* Set PHI nodes of a basic block BB to SEQ. */
+
+ void
+ set_phi_nodes (basic_block bb, gimple_seq seq)
+ {
+ gimple_stmt_iterator i;
+
+ gcc_checking_assert (!(bb->flags & BB_RTL));
+ bb->il.gimple.phi_nodes = seq;
+ if (seq)
+ for (i = gsi_start (seq); !gsi_end_p (i); gsi_next (&i))
+ gimple_set_bb (gsi_stmt (i), bb);
+ }
#include "gt-tree-phinodes.h"
===================================================================
*************** open_base_files (void)
"tree.h", "rtl.h", "function.h", "insn-config.h", "expr.h",
"hard-reg-set.h", "basic-block.h", "cselib.h", "insn-addr.h",
"optabs.h", "libfuncs.h", "debug.h", "ggc.h", "cgraph.h",
! "gimple.h", "gimple-ssa.h", "tree-cfg.h", "tree-phinodes.h",
! "ssa-iterators.h", "tree-ssanames.h", "tree-ssa-loop.h",
! "tree-ssa-loop-ivopts.h", "tree-ssa-loop-manip.h",
"tree-ssa-loop-niter.h", "tree-into-ssa.h", "tree-dfa.h",
"tree-ssa.h", "reload.h", "cpp-id-data.h", "tree-chrec.h",
"except.h", "output.h", "cfgloop.h",
"tree.h", "rtl.h", "function.h", "insn-config.h", "expr.h",
"hard-reg-set.h", "basic-block.h", "cselib.h", "insn-addr.h",
"optabs.h", "libfuncs.h", "debug.h", "ggc.h", "cgraph.h",
! "gimple.h", "gimple-iterator.h", "gimple-ssa.h", "tree-cfg.h",
! "tree-phinodes.h", "ssa-iterators.h", "tree-ssanames.h",
! "tree-ssa-loop.h", "tree-ssa-loop-ivopts.h", "tree-ssa-loop-manip.h",
"tree-ssa-loop-niter.h", "tree-into-ssa.h", "tree-dfa.h",
"tree-ssa.h", "reload.h", "cpp-id-data.h", "tree-chrec.h",
"except.h", "output.h", "cfgloop.h",
===================================================================
*************** OBJS = \
gimple-ssa-strength-reduction.o \
gimple-streamer-in.o \
gimple-streamer-out.o \
+ gimple-walk.o \
gimplify.o \
godump.o \
graph.o \