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Diffstat (limited to 'gcc/tree-ssa-operands.h')
| -rw-r--r-- | gcc/tree-ssa-operands.h | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/gcc/tree-ssa-operands.h b/gcc/tree-ssa-operands.h new file mode 100644 index 0000000..daf2dce --- /dev/null +++ b/gcc/tree-ssa-operands.h @@ -0,0 +1,321 @@ +/* SSA operand management for trees. + Copyright (C) 2003, 2005 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 2, 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 COPYING. If not, write to the Free +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. */ + + +/* 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; + +/* 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 +{ + struct def_optype_d *next; + tree *def_ptr; +}; +typedef struct def_optype_d *def_optype_p; + +/* 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; + +/* 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 +{ + 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; + + +#define SSA_OPERAND_MEMORY_SIZE (2048 - sizeof (void *)) + +struct ssa_operand_memory_d GTY((chain_next("%h.next"))) +{ + struct ssa_operand_memory_d *next; + char mem[SSA_OPERAND_MEMORY_SIZE]; +}; + + +/* This represents the operand cache for a stmt. */ +struct stmt_operands_d +{ + /* 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)) + +#define USE_STMT(USE) (USE)->stmt + +#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_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 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 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) + + +extern void init_ssa_operands (void); +extern void fini_ssa_operands (void); +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 */ |
