| /* SSA operand management for trees. |
| Copyright (C) 2003, 2005, 2006, 2007, 2008 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_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 ((use_operand_p)NULL) |
| #define NULL_DEF_OPERAND_P ((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 structure represents a variable sized buffer which is allocated by the |
| operand memory manager. Operands are suballocated out of this block. The |
| MEM array varies in size. */ |
| |
| struct GTY((chain_next("%h.next"))) ssa_operand_memory_d { |
| struct ssa_operand_memory_d *next; |
| char mem[1]; |
| }; |
| |
| /* Per-function operand caches. */ |
| struct GTY(()) ssa_operands { |
| struct ssa_operand_memory_d *operand_memory; |
| unsigned operand_memory_index; |
| /* Current size of the operand memory buffer. */ |
| unsigned int ssa_operand_mem_size; |
| |
| bool ops_active; |
| |
| struct def_optype_d * GTY ((skip (""))) free_defs; |
| struct use_optype_d * GTY ((skip (""))) free_uses; |
| }; |
| |
| #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)->loc.stmt |
| |
| #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 PHI_RESULT_PTR(PHI) gimple_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) gimple_phi_arg_imm_use_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 update_stmt_operands (gimple); |
| extern void free_stmt_operands (gimple); |
| extern bool verify_imm_links (FILE *f, tree var); |
| |
| 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 void dump_decl_set (FILE *, bitmap); |
| extern void debug_decl_set (bitmap); |
| |
| extern bool ssa_operands_active (void); |
| |
| extern void unlink_stmt_vdef (gimple); |
| |
| enum ssa_op_iter_type { |
| ssa_op_iter_none = 0, |
| ssa_op_iter_tree, |
| ssa_op_iter_use, |
| ssa_op_iter_def |
| }; |
| |
| /* 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 |
| { |
| bool done; |
| enum ssa_op_iter_type iter_type; |
| def_optype_p defs; |
| use_optype_p uses; |
| int phi_i; |
| int num_phi; |
| gimple phi_stmt; |
| } 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_VDEF 0x08 /* VDEF operands. */ |
| |
| /* These are commonly grouped operand flags. */ |
| #define SSA_OP_VIRTUAL_USES (SSA_OP_VUSE) |
| #define SSA_OP_VIRTUAL_DEFS (SSA_OP_VDEF) |
| #define SSA_OP_ALL_VIRTUALS (SSA_OP_VIRTUAL_USES | 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_OPERANDS (SSA_OP_ALL_USES | SSA_OP_ALL_DEFS) |
| |
| /* 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 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) = (gimple_code (STMT) == GIMPLE_PHI \ |
| ? 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) = (gimple_code (STMT) == GIMPLE_PHI \ |
| ? 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 */ |