| /* 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 */ |