322 lines
12 KiB
C
322 lines
12 KiB
C
/* SSA operand management for trees.
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Copyright (C) 2003, 2005 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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#ifndef GCC_TREE_SSA_OPERANDS_H
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#define GCC_TREE_SSA_OPERANDS_H
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/* Interface to SSA operands. */
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/* This represents a pointer to a DEF operand. */
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typedef tree *def_operand_p;
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/* This represents a pointer to a USE operand. */
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typedef ssa_use_operand_t *use_operand_p;
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/* NULL operand types. */
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#define NULL_USE_OPERAND_P NULL
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#define NULL_DEF_OPERAND_P NULL
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/* This represents the DEF operands of a stmt. */
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struct def_optype_d
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{
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struct def_optype_d *next;
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tree *def_ptr;
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};
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typedef struct def_optype_d *def_optype_p;
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/* This represents the USE operands of a stmt. */
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struct use_optype_d
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{
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struct use_optype_d *next;
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struct ssa_use_operand_d use_ptr;
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};
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typedef struct use_optype_d *use_optype_p;
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/* This represents the MAY_DEFS for a stmt. */
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struct maydef_optype_d
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{
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struct maydef_optype_d *next;
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tree def_var;
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tree use_var;
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struct ssa_use_operand_d use_ptr;
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};
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typedef struct maydef_optype_d *maydef_optype_p;
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/* This represents the VUSEs for a stmt. */
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struct vuse_optype_d
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{
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struct vuse_optype_d *next;
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tree use_var;
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struct ssa_use_operand_d use_ptr;
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};
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typedef struct vuse_optype_d *vuse_optype_p;
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/* This represents the V_MUST_DEFS for a stmt. */
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struct mustdef_optype_d
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{
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struct mustdef_optype_d *next;
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tree def_var;
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tree kill_var;
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struct ssa_use_operand_d use_ptr;
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};
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typedef struct mustdef_optype_d *mustdef_optype_p;
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#define SSA_OPERAND_MEMORY_SIZE (2048 - sizeof (void *))
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struct ssa_operand_memory_d GTY((chain_next("%h.next")))
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{
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struct ssa_operand_memory_d *next;
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char mem[SSA_OPERAND_MEMORY_SIZE];
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};
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/* This represents the operand cache for a stmt. */
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struct stmt_operands_d
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{
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/* Statement operands. */
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struct def_optype_d * def_ops;
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struct use_optype_d * use_ops;
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/* Virtual operands (V_MAY_DEF, VUSE, and V_MUST_DEF). */
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struct maydef_optype_d * maydef_ops;
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struct vuse_optype_d * vuse_ops;
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struct mustdef_optype_d * mustdef_ops;
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};
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typedef struct stmt_operands_d *stmt_operands_p;
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#define USE_FROM_PTR(PTR) get_use_from_ptr (PTR)
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#define DEF_FROM_PTR(PTR) get_def_from_ptr (PTR)
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#define SET_USE(USE, V) set_ssa_use_from_ptr (USE, V)
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#define SET_DEF(DEF, V) ((*(DEF)) = (V))
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#define USE_STMT(USE) (USE)->stmt
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#define DEF_OPS(STMT) (stmt_ann (STMT)->operands.def_ops)
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#define USE_OPS(STMT) (stmt_ann (STMT)->operands.use_ops)
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#define VUSE_OPS(STMT) (stmt_ann (STMT)->operands.vuse_ops)
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#define MAYDEF_OPS(STMT) (stmt_ann (STMT)->operands.maydef_ops)
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#define MUSTDEF_OPS(STMT) (stmt_ann (STMT)->operands.mustdef_ops)
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#define USE_OP_PTR(OP) (&((OP)->use_ptr))
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#define USE_OP(OP) (USE_FROM_PTR (USE_OP_PTR (OP)))
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#define DEF_OP_PTR(OP) ((OP)->def_ptr)
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#define DEF_OP(OP) (DEF_FROM_PTR (DEF_OP_PTR (OP)))
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#define VUSE_OP_PTR(OP) USE_OP_PTR(OP)
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#define VUSE_OP(OP) ((OP)->use_var)
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#define MAYDEF_RESULT_PTR(OP) (&((OP)->def_var))
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#define MAYDEF_RESULT(OP) ((OP)->def_var)
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#define MAYDEF_OP_PTR(OP) USE_OP_PTR (OP)
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#define MAYDEF_OP(OP) ((OP)->use_var)
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#define MUSTDEF_RESULT_PTR(OP) (&((OP)->def_var))
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#define MUSTDEF_RESULT(OP) ((OP)->def_var)
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#define MUSTDEF_KILL_PTR(OP) USE_OP_PTR (OP)
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#define MUSTDEF_KILL(OP) ((OP)->kill_var)
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#define PHI_RESULT_PTR(PHI) get_phi_result_ptr (PHI)
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#define PHI_RESULT(PHI) DEF_FROM_PTR (PHI_RESULT_PTR (PHI))
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#define SET_PHI_RESULT(PHI, V) SET_DEF (PHI_RESULT_PTR (PHI), (V))
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#define PHI_ARG_DEF_PTR(PHI, I) get_phi_arg_def_ptr ((PHI), (I))
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#define PHI_ARG_DEF(PHI, I) USE_FROM_PTR (PHI_ARG_DEF_PTR ((PHI), (I)))
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#define SET_PHI_ARG_DEF(PHI, I, V) \
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SET_USE (PHI_ARG_DEF_PTR ((PHI), (I)), (V))
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#define PHI_ARG_DEF_FROM_EDGE(PHI, E) \
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PHI_ARG_DEF ((PHI), (E)->dest_idx)
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#define PHI_ARG_DEF_PTR_FROM_EDGE(PHI, E) \
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PHI_ARG_DEF_PTR ((PHI), (E)->dest_idx)
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#define PHI_ARG_INDEX_FROM_USE(USE) phi_arg_index_from_use (USE)
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extern void init_ssa_operands (void);
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extern void fini_ssa_operands (void);
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extern void free_ssa_operands (stmt_operands_p);
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extern void update_stmt_operands (tree);
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extern bool verify_imm_links (FILE *f, tree var);
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extern void copy_virtual_operands (tree, tree);
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extern void create_ssa_artficial_load_stmt (tree, tree);
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extern void dump_immediate_uses (FILE *file);
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extern void dump_immediate_uses_for (FILE *file, tree var);
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extern void debug_immediate_uses (void);
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extern void debug_immediate_uses_for (tree var);
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extern bool ssa_operands_active (void);
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extern void add_to_addressable_set (tree, bitmap *);
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enum ssa_op_iter_type {
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ssa_op_iter_none = 0,
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ssa_op_iter_tree,
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ssa_op_iter_use,
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ssa_op_iter_def,
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ssa_op_iter_maymustdef
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};
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/* This structure is used in the operand iterator loops. It contains the
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items required to determine which operand is retrieved next. During
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optimization, this structure is scalarized, and any unused fields are
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optimized away, resulting in little overhead. */
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typedef struct ssa_operand_iterator_d
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{
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def_optype_p defs;
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use_optype_p uses;
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vuse_optype_p vuses;
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maydef_optype_p maydefs;
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maydef_optype_p mayuses;
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mustdef_optype_p mustdefs;
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mustdef_optype_p mustkills;
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enum ssa_op_iter_type iter_type;
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int phi_i;
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int num_phi;
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tree phi_stmt;
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bool done;
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} ssa_op_iter;
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/* These flags are used to determine which operands are returned during
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execution of the loop. */
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#define SSA_OP_USE 0x01 /* Real USE operands. */
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#define SSA_OP_DEF 0x02 /* Real DEF operands. */
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#define SSA_OP_VUSE 0x04 /* VUSE operands. */
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#define SSA_OP_VMAYUSE 0x08 /* USE portion of V_MAY_DEFS. */
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#define SSA_OP_VMAYDEF 0x10 /* DEF portion of V_MAY_DEFS. */
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#define SSA_OP_VMUSTDEF 0x20 /* V_MUST_DEF definitions. */
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#define SSA_OP_VMUSTKILL 0x40 /* V_MUST_DEF kills. */
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/* These are commonly grouped operand flags. */
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#define SSA_OP_VIRTUAL_USES (SSA_OP_VUSE | SSA_OP_VMAYUSE)
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#define SSA_OP_VIRTUAL_DEFS (SSA_OP_VMAYDEF | SSA_OP_VMUSTDEF)
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#define SSA_OP_VIRTUAL_KILLS (SSA_OP_VMUSTKILL)
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#define SSA_OP_ALL_VIRTUALS (SSA_OP_VIRTUAL_USES | SSA_OP_VIRTUAL_KILLS \
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| SSA_OP_VIRTUAL_DEFS)
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#define SSA_OP_ALL_USES (SSA_OP_VIRTUAL_USES | SSA_OP_USE)
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#define SSA_OP_ALL_DEFS (SSA_OP_VIRTUAL_DEFS | SSA_OP_DEF)
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#define SSA_OP_ALL_KILLS (SSA_OP_VIRTUAL_KILLS)
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#define SSA_OP_ALL_OPERANDS (SSA_OP_ALL_USES | SSA_OP_ALL_DEFS \
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| SSA_OP_ALL_KILLS)
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/* This macro executes a loop over the operands of STMT specified in FLAG,
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returning each operand as a 'tree' in the variable TREEVAR. ITER is an
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ssa_op_iter structure used to control the loop. */
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#define FOR_EACH_SSA_TREE_OPERAND(TREEVAR, STMT, ITER, FLAGS) \
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for (TREEVAR = op_iter_init_tree (&(ITER), STMT, FLAGS); \
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!op_iter_done (&(ITER)); \
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TREEVAR = op_iter_next_tree (&(ITER)))
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/* This macro executes a loop over the operands of STMT specified in FLAG,
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returning each operand as a 'use_operand_p' in the variable USEVAR.
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ITER is an ssa_op_iter structure used to control the loop. */
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#define FOR_EACH_SSA_USE_OPERAND(USEVAR, STMT, ITER, FLAGS) \
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for (USEVAR = op_iter_init_use (&(ITER), STMT, FLAGS); \
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!op_iter_done (&(ITER)); \
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USEVAR = op_iter_next_use (&(ITER)))
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/* This macro executes a loop over the operands of STMT specified in FLAG,
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returning each operand as a 'def_operand_p' in the variable DEFVAR.
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ITER is an ssa_op_iter structure used to control the loop. */
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#define FOR_EACH_SSA_DEF_OPERAND(DEFVAR, STMT, ITER, FLAGS) \
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for (DEFVAR = op_iter_init_def (&(ITER), STMT, FLAGS); \
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!op_iter_done (&(ITER)); \
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DEFVAR = op_iter_next_def (&(ITER)))
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/* This macro executes a loop over the V_MAY_DEF operands of STMT. The def
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and use for each V_MAY_DEF is returned in DEFVAR and USEVAR.
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ITER is an ssa_op_iter structure used to control the loop. */
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#define FOR_EACH_SSA_MAYDEF_OPERAND(DEFVAR, USEVAR, STMT, ITER) \
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for (op_iter_init_maydef (&(ITER), STMT, &(USEVAR), &(DEFVAR)); \
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!op_iter_done (&(ITER)); \
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op_iter_next_maymustdef (&(USEVAR), &(DEFVAR), &(ITER)))
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/* This macro executes a loop over the V_MUST_DEF operands of STMT. The def
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and kill for each V_MUST_DEF is returned in DEFVAR and KILLVAR.
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ITER is an ssa_op_iter structure used to control the loop. */
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#define FOR_EACH_SSA_MUSTDEF_OPERAND(DEFVAR, KILLVAR, STMT, ITER) \
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for (op_iter_init_mustdef (&(ITER), STMT, &(KILLVAR), &(DEFVAR)); \
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!op_iter_done (&(ITER)); \
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op_iter_next_maymustdef (&(KILLVAR), &(DEFVAR), &(ITER)))
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/* This macro executes a loop over the V_{MUST,MAY}_DEF of STMT. The def
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and kill for each V_{MUST,MAY}_DEF is returned in DEFVAR and KILLVAR.
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ITER is an ssa_op_iter structure used to control the loop. */
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#define FOR_EACH_SSA_MUST_AND_MAY_DEF_OPERAND(DEFVAR, KILLVAR, STMT, ITER)\
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for (op_iter_init_must_and_may_def (&(ITER), STMT, &(KILLVAR), &(DEFVAR));\
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!op_iter_done (&(ITER)); \
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op_iter_next_maymustdef (&(KILLVAR), &(DEFVAR), &(ITER)))
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/* This macro will execute a loop over all the arguments of a PHI which
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match FLAGS. A use_operand_p is always returned via USEVAR. FLAGS
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can be either SSA_OP_USE or SSA_OP_VIRTUAL_USES or SSA_OP_ALL_USES. */
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#define FOR_EACH_PHI_ARG(USEVAR, STMT, ITER, FLAGS) \
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for ((USEVAR) = op_iter_init_phiuse (&(ITER), STMT, FLAGS); \
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!op_iter_done (&(ITER)); \
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(USEVAR) = op_iter_next_use (&(ITER)))
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/* This macro will execute a loop over a stmt, regardless of whether it is
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a real stmt or a PHI node, looking at the USE nodes matching FLAGS. */
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#define FOR_EACH_PHI_OR_STMT_USE(USEVAR, STMT, ITER, FLAGS) \
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for ((USEVAR) = (TREE_CODE (STMT) == PHI_NODE \
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? op_iter_init_phiuse (&(ITER), STMT, FLAGS) \
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: op_iter_init_use (&(ITER), STMT, FLAGS)); \
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!op_iter_done (&(ITER)); \
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(USEVAR) = op_iter_next_use (&(ITER)))
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/* This macro will execute a loop over a stmt, regardless of whether it is
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a real stmt or a PHI node, looking at the DEF nodes matching FLAGS. */
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#define FOR_EACH_PHI_OR_STMT_DEF(DEFVAR, STMT, ITER, FLAGS) \
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for ((DEFVAR) = (TREE_CODE (STMT) == PHI_NODE \
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? op_iter_init_phidef (&(ITER), STMT, FLAGS) \
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: op_iter_init_def (&(ITER), STMT, FLAGS)); \
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!op_iter_done (&(ITER)); \
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(DEFVAR) = op_iter_next_def (&(ITER)))
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/* This macro returns an operand in STMT as a tree if it is the ONLY
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operand matching FLAGS. If there are 0 or more than 1 operand matching
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FLAGS, then NULL_TREE is returned. */
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#define SINGLE_SSA_TREE_OPERAND(STMT, FLAGS) \
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single_ssa_tree_operand (STMT, FLAGS)
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/* This macro returns an operand in STMT as a use_operand_p if it is the ONLY
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operand matching FLAGS. If there are 0 or more than 1 operand matching
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FLAGS, then NULL_USE_OPERAND_P is returned. */
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#define SINGLE_SSA_USE_OPERAND(STMT, FLAGS) \
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single_ssa_use_operand (STMT, FLAGS)
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/* This macro returns an operand in STMT as a def_operand_p if it is the ONLY
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operand matching FLAGS. If there are 0 or more than 1 operand matching
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FLAGS, then NULL_DEF_OPERAND_P is returned. */
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#define SINGLE_SSA_DEF_OPERAND(STMT, FLAGS) \
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single_ssa_def_operand (STMT, FLAGS)
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/* This macro returns TRUE if there are no operands matching FLAGS in STMT. */
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#define ZERO_SSA_OPERANDS(STMT, FLAGS) zero_ssa_operands (STMT, FLAGS)
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/* This macro counts the number of operands in STMT matching FLAGS. */
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#define NUM_SSA_OPERANDS(STMT, FLAGS) num_ssa_operands (STMT, FLAGS)
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#endif /* GCC_TREE_SSA_OPERANDS_H */
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