/* SSA operand management for trees.
- Copyright (C) 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2005 Free Software Foundation, Inc.
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. */
#ifndef GCC_TREE_SSA_OPERANDS_H
#define GCC_TREE_SSA_OPERANDS_H
/* Interface to SSA operands. */
-typedef struct def_optype_d GTY(())
-{
- unsigned num_defs;
- tree * GTY((length("%h.num_defs"), skip(""))) defs[1];
-} def_optype_t;
-typedef def_optype_t *def_optype;
+/* This represents a pointer to a DEF operand. */
+typedef tree *def_operand_p;
+
+/* This represents a pointer to a USE operand. */
+typedef ssa_use_operand_t *use_operand_p;
-typedef struct use_optype_d GTY(())
+/* NULL operand types. */
+#define NULL_USE_OPERAND_P NULL
+#define NULL_DEF_OPERAND_P NULL
+
+/* This represents the DEF operands of a stmt. */
+struct def_optype_d
{
- unsigned num_uses;
- tree * GTY((length("%h.num_uses"), skip(""))) uses[1];
-} use_optype_t;
+ struct def_optype_d *next;
+ tree *def_ptr;
+};
+typedef struct def_optype_d *def_optype_p;
-typedef use_optype_t *use_optype;
+/* This represents the USE operands of a stmt. */
+struct use_optype_d
+{
+ struct use_optype_d *next;
+ struct ssa_use_operand_d use_ptr;
+};
+typedef struct use_optype_d *use_optype_p;
-typedef struct v_may_def_optype_d GTY(())
+/* This represents the MAY_DEFS for a stmt. */
+struct maydef_optype_d
+{
+ struct maydef_optype_d *next;
+ tree def_var;
+ tree use_var;
+ struct ssa_use_operand_d use_ptr;
+};
+typedef struct maydef_optype_d *maydef_optype_p;
+
+/* This represents the VUSEs for a stmt. */
+struct vuse_optype_d
+{
+ struct vuse_optype_d *next;
+ tree use_var;
+ struct ssa_use_operand_d use_ptr;
+};
+typedef struct vuse_optype_d *vuse_optype_p;
+
+/* This represents the V_MUST_DEFS for a stmt. */
+struct mustdef_optype_d
{
- unsigned num_v_may_defs;
- tree GTY((length ("%h.num_v_may_defs * 2"))) v_may_defs[1];
-} v_may_def_optype_t;
+ struct mustdef_optype_d *next;
+ tree def_var;
+ tree kill_var;
+ struct ssa_use_operand_d use_ptr;
+};
+typedef struct mustdef_optype_d *mustdef_optype_p;
-typedef v_may_def_optype_t *v_may_def_optype;
-typedef struct vuse_optype_d GTY(())
+#define SSA_OPERAND_MEMORY_SIZE (2048 - sizeof (void *))
+
+struct ssa_operand_memory_d GTY((chain_next("%h.next")))
{
- unsigned num_vuses;
- tree GTY((length ("%h.num_vuses"))) vuses[1];
-} vuse_optype_t;
+ struct ssa_operand_memory_d *next;
+ char mem[SSA_OPERAND_MEMORY_SIZE];
+};
-typedef vuse_optype_t *vuse_optype;
-typedef struct v_must_def_optype_d GTY(())
+/* This represents the operand cache for a stmt. */
+struct stmt_operands_d
{
- unsigned num_v_must_defs;
- tree GTY((length("%h.num_v_must_defs"))) v_must_defs[1];
-} v_must_def_optype_t;
+ /* Statement operands. */
+ struct def_optype_d * def_ops;
+ struct use_optype_d * use_ops;
+
+ /* Virtual operands (V_MAY_DEF, VUSE, and V_MUST_DEF). */
+ struct maydef_optype_d * maydef_ops;
+ struct vuse_optype_d * vuse_ops;
+ struct mustdef_optype_d * mustdef_ops;
+};
+
+typedef struct stmt_operands_d *stmt_operands_p;
+
+#define USE_FROM_PTR(PTR) get_use_from_ptr (PTR)
+#define DEF_FROM_PTR(PTR) get_def_from_ptr (PTR)
+#define SET_USE(USE, V) set_ssa_use_from_ptr (USE, V)
+#define SET_DEF(DEF, V) ((*(DEF)) = (V))
-typedef v_must_def_optype_t *v_must_def_optype;
+#define USE_STMT(USE) (USE)->stmt
-#define USE_OPS(ANN) get_use_ops (ANN)
-#define STMT_USE_OPS(STMT) get_use_ops (stmt_ann (STMT))
-#define NUM_USES(OPS) ((OPS) ? (OPS)->num_uses : 0)
-#define USE_OP_PTR(OPS, I) get_use_op_ptr ((OPS), (I))
-#define USE_OP(OPS, I) (*(USE_OP_PTR ((OPS), (I))))
+#define DEF_OPS(STMT) (stmt_ann (STMT)->operands.def_ops)
+#define USE_OPS(STMT) (stmt_ann (STMT)->operands.use_ops)
+#define VUSE_OPS(STMT) (stmt_ann (STMT)->operands.vuse_ops)
+#define MAYDEF_OPS(STMT) (stmt_ann (STMT)->operands.maydef_ops)
+#define MUSTDEF_OPS(STMT) (stmt_ann (STMT)->operands.mustdef_ops)
+#define USE_OP_PTR(OP) (&((OP)->use_ptr))
+#define USE_OP(OP) (USE_FROM_PTR (USE_OP_PTR (OP)))
-#define DEF_OPS(ANN) get_def_ops (ANN)
-#define STMT_DEF_OPS(STMT) get_def_ops (stmt_ann (STMT))
-#define NUM_DEFS(OPS) ((OPS) ? (OPS)->num_defs : 0)
-#define DEF_OP_PTR(OPS, I) get_def_op_ptr ((OPS), (I))
-#define DEF_OP(OPS, I) (*(DEF_OP_PTR ((OPS), (I))))
+#define DEF_OP_PTR(OP) ((OP)->def_ptr)
+#define DEF_OP(OP) (DEF_FROM_PTR (DEF_OP_PTR (OP)))
+#define VUSE_OP_PTR(OP) USE_OP_PTR(OP)
+#define VUSE_OP(OP) ((OP)->use_var)
-#define V_MAY_DEF_OPS(ANN) get_v_may_def_ops (ANN)
-#define STMT_V_MAY_DEF_OPS(STMT) get_v_may_def_ops (stmt_ann(STMT))
-#define NUM_V_MAY_DEFS(OPS) ((OPS) ? (OPS)->num_v_may_defs : 0)
-#define V_MAY_DEF_RESULT_PTR(OPS, I) get_v_may_def_result_ptr ((OPS), (I))
-#define V_MAY_DEF_RESULT(OPS, I) (*(V_MAY_DEF_RESULT_PTR ((OPS), (I))))
-#define V_MAY_DEF_OP_PTR(OPS, I) get_v_may_def_op_ptr ((OPS), (I))
-#define V_MAY_DEF_OP(OPS, I) (*(V_MAY_DEF_OP_PTR ((OPS), (I))))
+#define MAYDEF_RESULT_PTR(OP) (&((OP)->def_var))
+#define MAYDEF_RESULT(OP) ((OP)->def_var)
+#define MAYDEF_OP_PTR(OP) USE_OP_PTR (OP)
+#define MAYDEF_OP(OP) ((OP)->use_var)
+#define MUSTDEF_RESULT_PTR(OP) (&((OP)->def_var))
+#define MUSTDEF_RESULT(OP) ((OP)->def_var)
+#define MUSTDEF_KILL_PTR(OP) USE_OP_PTR (OP)
+#define MUSTDEF_KILL(OP) ((OP)->kill_var)
-#define VUSE_OPS(ANN) get_vuse_ops (ANN)
-#define STMT_VUSE_OPS(STMT) get_vuse_ops (stmt_ann(STMT))
-#define NUM_VUSES(OPS) ((OPS) ? (OPS)->num_vuses : 0)
-#define VUSE_OP_PTR(OPS, I) get_vuse_op_ptr ((OPS), (I))
-#define VUSE_OP(OPS, I) (*(VUSE_OP_PTR ((OPS), (I))))
+#define PHI_RESULT_PTR(PHI) get_phi_result_ptr (PHI)
+#define PHI_RESULT(PHI) DEF_FROM_PTR (PHI_RESULT_PTR (PHI))
+#define SET_PHI_RESULT(PHI, V) SET_DEF (PHI_RESULT_PTR (PHI), (V))
+#define PHI_ARG_DEF_PTR(PHI, I) get_phi_arg_def_ptr ((PHI), (I))
+#define PHI_ARG_DEF(PHI, I) USE_FROM_PTR (PHI_ARG_DEF_PTR ((PHI), (I)))
+#define SET_PHI_ARG_DEF(PHI, I, V) \
+ SET_USE (PHI_ARG_DEF_PTR ((PHI), (I)), (V))
+#define PHI_ARG_DEF_FROM_EDGE(PHI, E) \
+ PHI_ARG_DEF ((PHI), (E)->dest_idx)
+#define PHI_ARG_DEF_PTR_FROM_EDGE(PHI, E) \
+ PHI_ARG_DEF_PTR ((PHI), (E)->dest_idx)
+#define PHI_ARG_INDEX_FROM_USE(USE) phi_arg_index_from_use (USE)
-#define V_MUST_DEF_OPS(ANN) get_v_must_def_ops (ANN)
-#define STMT_V_MUST_DEF_OPS(STMT) get_v_must_def_ops (stmt_ann (STMT))
-#define NUM_V_MUST_DEFS(OPS) ((OPS) ? (OPS)->num_v_must_defs : 0)
-#define V_MUST_DEF_OP_PTR(OPS, I) get_v_must_def_op_ptr ((OPS), (I))
-#define V_MUST_DEF_OP(OPS, I) (*(V_MUST_DEF_OP_PTR ((OPS), (I))))
extern void init_ssa_operands (void);
extern void fini_ssa_operands (void);
-extern void verify_start_operands (tree);
-extern void finalize_ssa_stmt_operands (tree);
-void add_vuse (tree, tree);
-extern void get_stmt_operands (tree);
-extern void remove_vuses (tree);
-extern void remove_v_may_defs (tree);
-extern void remove_v_must_defs (tree);
+extern void free_ssa_operands (stmt_operands_p);
+extern void update_stmt_operands (tree);
+extern bool verify_imm_links (FILE *f, tree var);
+
+extern void copy_virtual_operands (tree, tree);
+extern void create_ssa_artficial_load_stmt (tree, tree);
+
+extern void dump_immediate_uses (FILE *file);
+extern void dump_immediate_uses_for (FILE *file, tree var);
+extern void debug_immediate_uses (void);
+extern void debug_immediate_uses_for (tree var);
+
+extern bool ssa_operands_active (void);
+
+extern void add_to_addressable_set (tree, bitmap *);
+
+enum ssa_op_iter_type {
+ ssa_op_iter_none = 0,
+ ssa_op_iter_tree,
+ ssa_op_iter_use,
+ ssa_op_iter_def,
+ ssa_op_iter_maymustdef
+};
+/* This structure is used in the operand iterator loops. It contains the
+ items required to determine which operand is retrieved next. During
+ optimization, this structure is scalarized, and any unused fields are
+ optimized away, resulting in little overhead. */
+
+typedef struct ssa_operand_iterator_d
+{
+ def_optype_p defs;
+ use_optype_p uses;
+ vuse_optype_p vuses;
+ maydef_optype_p maydefs;
+ maydef_optype_p mayuses;
+ mustdef_optype_p mustdefs;
+ mustdef_optype_p mustkills;
+ enum ssa_op_iter_type iter_type;
+ int phi_i;
+ int num_phi;
+ tree phi_stmt;
+ bool done;
+} ssa_op_iter;
+
+/* These flags are used to determine which operands are returned during
+ execution of the loop. */
+#define SSA_OP_USE 0x01 /* Real USE operands. */
+#define SSA_OP_DEF 0x02 /* Real DEF operands. */
+#define SSA_OP_VUSE 0x04 /* VUSE operands. */
+#define SSA_OP_VMAYUSE 0x08 /* USE portion of V_MAY_DEFS. */
+#define SSA_OP_VMAYDEF 0x10 /* DEF portion of V_MAY_DEFS. */
+#define SSA_OP_VMUSTDEF 0x20 /* V_MUST_DEF definitions. */
+#define SSA_OP_VMUSTKILL 0x40 /* V_MUST_DEF kills. */
+
+/* These are commonly grouped operand flags. */
+#define SSA_OP_VIRTUAL_USES (SSA_OP_VUSE | SSA_OP_VMAYUSE)
+#define SSA_OP_VIRTUAL_DEFS (SSA_OP_VMAYDEF | SSA_OP_VMUSTDEF)
+#define SSA_OP_VIRTUAL_KILLS (SSA_OP_VMUSTKILL)
+#define SSA_OP_ALL_VIRTUALS (SSA_OP_VIRTUAL_USES | SSA_OP_VIRTUAL_KILLS \
+ | SSA_OP_VIRTUAL_DEFS)
+#define SSA_OP_ALL_USES (SSA_OP_VIRTUAL_USES | SSA_OP_USE)
+#define SSA_OP_ALL_DEFS (SSA_OP_VIRTUAL_DEFS | SSA_OP_DEF)
+#define SSA_OP_ALL_KILLS (SSA_OP_VIRTUAL_KILLS)
+#define SSA_OP_ALL_OPERANDS (SSA_OP_ALL_USES | SSA_OP_ALL_DEFS \
+ | SSA_OP_ALL_KILLS)
+
+/* This macro executes a loop over the operands of STMT specified in FLAG,
+ returning each operand as a 'tree' in the variable TREEVAR. ITER is an
+ ssa_op_iter structure used to control the loop. */
+#define FOR_EACH_SSA_TREE_OPERAND(TREEVAR, STMT, ITER, FLAGS) \
+ for (TREEVAR = op_iter_init_tree (&(ITER), STMT, FLAGS); \
+ !op_iter_done (&(ITER)); \
+ TREEVAR = op_iter_next_tree (&(ITER)))
+
+/* This macro executes a loop over the operands of STMT specified in FLAG,
+ returning each operand as a 'use_operand_p' in the variable USEVAR.
+ ITER is an ssa_op_iter structure used to control the loop. */
+#define FOR_EACH_SSA_USE_OPERAND(USEVAR, STMT, ITER, FLAGS) \
+ for (USEVAR = op_iter_init_use (&(ITER), STMT, FLAGS); \
+ !op_iter_done (&(ITER)); \
+ USEVAR = op_iter_next_use (&(ITER)))
+
+/* This macro executes a loop over the operands of STMT specified in FLAG,
+ returning each operand as a 'def_operand_p' in the variable DEFVAR.
+ ITER is an ssa_op_iter structure used to control the loop. */
+#define FOR_EACH_SSA_DEF_OPERAND(DEFVAR, STMT, ITER, FLAGS) \
+ for (DEFVAR = op_iter_init_def (&(ITER), STMT, FLAGS); \
+ !op_iter_done (&(ITER)); \
+ DEFVAR = op_iter_next_def (&(ITER)))
+
+/* This macro executes a loop over the V_MAY_DEF operands of STMT. The def
+ and use for each V_MAY_DEF is returned in DEFVAR and USEVAR.
+ ITER is an ssa_op_iter structure used to control the loop. */
+#define FOR_EACH_SSA_MAYDEF_OPERAND(DEFVAR, USEVAR, STMT, ITER) \
+ for (op_iter_init_maydef (&(ITER), STMT, &(USEVAR), &(DEFVAR)); \
+ !op_iter_done (&(ITER)); \
+ op_iter_next_maymustdef (&(USEVAR), &(DEFVAR), &(ITER)))
+
+/* This macro executes a loop over the V_MUST_DEF operands of STMT. The def
+ and kill for each V_MUST_DEF is returned in DEFVAR and KILLVAR.
+ ITER is an ssa_op_iter structure used to control the loop. */
+#define FOR_EACH_SSA_MUSTDEF_OPERAND(DEFVAR, KILLVAR, STMT, ITER) \
+ for (op_iter_init_mustdef (&(ITER), STMT, &(KILLVAR), &(DEFVAR)); \
+ !op_iter_done (&(ITER)); \
+ op_iter_next_maymustdef (&(KILLVAR), &(DEFVAR), &(ITER)))
+
+/* This macro executes a loop over the V_{MUST,MAY}_DEF of STMT. The def
+ and kill for each V_{MUST,MAY}_DEF is returned in DEFVAR and KILLVAR.
+ ITER is an ssa_op_iter structure used to control the loop. */
+#define FOR_EACH_SSA_MUST_AND_MAY_DEF_OPERAND(DEFVAR, KILLVAR, STMT, ITER)\
+ for (op_iter_init_must_and_may_def (&(ITER), STMT, &(KILLVAR), &(DEFVAR));\
+ !op_iter_done (&(ITER)); \
+ op_iter_next_maymustdef (&(KILLVAR), &(DEFVAR), &(ITER)))
+
+/* This macro will execute a loop over all the arguments of a PHI which
+ match FLAGS. A use_operand_p is always returned via USEVAR. FLAGS
+ can be either SSA_OP_USE or SSA_OP_VIRTUAL_USES or SSA_OP_ALL_USES. */
+#define FOR_EACH_PHI_ARG(USEVAR, STMT, ITER, FLAGS) \
+ for ((USEVAR) = op_iter_init_phiuse (&(ITER), STMT, FLAGS); \
+ !op_iter_done (&(ITER)); \
+ (USEVAR) = op_iter_next_use (&(ITER)))
+
+
+/* This macro will execute a loop over a stmt, regardless of whether it is
+ a real stmt or a PHI node, looking at the USE nodes matching FLAGS. */
+#define FOR_EACH_PHI_OR_STMT_USE(USEVAR, STMT, ITER, FLAGS) \
+ for ((USEVAR) = (TREE_CODE (STMT) == PHI_NODE \
+ ? op_iter_init_phiuse (&(ITER), STMT, FLAGS) \
+ : op_iter_init_use (&(ITER), STMT, FLAGS)); \
+ !op_iter_done (&(ITER)); \
+ (USEVAR) = op_iter_next_use (&(ITER)))
+
+/* This macro will execute a loop over a stmt, regardless of whether it is
+ a real stmt or a PHI node, looking at the DEF nodes matching FLAGS. */
+#define FOR_EACH_PHI_OR_STMT_DEF(DEFVAR, STMT, ITER, FLAGS) \
+ for ((DEFVAR) = (TREE_CODE (STMT) == PHI_NODE \
+ ? op_iter_init_phidef (&(ITER), STMT, FLAGS) \
+ : op_iter_init_def (&(ITER), STMT, FLAGS)); \
+ !op_iter_done (&(ITER)); \
+ (DEFVAR) = op_iter_next_def (&(ITER)))
+
+/* This macro returns an operand in STMT as a tree if it is the ONLY
+ operand matching FLAGS. If there are 0 or more than 1 operand matching
+ FLAGS, then NULL_TREE is returned. */
+#define SINGLE_SSA_TREE_OPERAND(STMT, FLAGS) \
+ single_ssa_tree_operand (STMT, FLAGS)
+
+/* This macro returns an operand in STMT as a use_operand_p if it is the ONLY
+ operand matching FLAGS. If there are 0 or more than 1 operand matching
+ FLAGS, then NULL_USE_OPERAND_P is returned. */
+#define SINGLE_SSA_USE_OPERAND(STMT, FLAGS) \
+ single_ssa_use_operand (STMT, FLAGS)
+
+/* This macro returns an operand in STMT as a def_operand_p if it is the ONLY
+ operand matching FLAGS. If there are 0 or more than 1 operand matching
+ FLAGS, then NULL_DEF_OPERAND_P is returned. */
+#define SINGLE_SSA_DEF_OPERAND(STMT, FLAGS) \
+ single_ssa_def_operand (STMT, FLAGS)
+
+/* This macro returns TRUE if there are no operands matching FLAGS in STMT. */
+#define ZERO_SSA_OPERANDS(STMT, FLAGS) zero_ssa_operands (STMT, FLAGS)
+
+/* This macro counts the number of operands in STMT matching FLAGS. */
+#define NUM_SSA_OPERANDS(STMT, FLAGS) num_ssa_operands (STMT, FLAGS)
#endif /* GCC_TREE_SSA_OPERANDS_H */
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