1 | /* SSA operand management for trees. |
2 | Copyright (C) 2003-2023 Free Software Foundation, Inc. |
3 | |
4 | This file is part of GCC. |
5 | |
6 | GCC is free software; you can redistribute it and/or modify it under |
7 | the terms of the GNU General Public License as published by the Free |
8 | Software Foundation; either version 3, or (at your option) any later |
9 | version. |
10 | |
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
14 | for more details. |
15 | |
16 | You should have received a copy of the GNU General Public License |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ |
19 | |
20 | #ifndef GCC_TREE_SSA_OPERANDS_H |
21 | #define GCC_TREE_SSA_OPERANDS_H |
22 | |
23 | /* Interface to SSA operands. */ |
24 | |
25 | |
26 | /* This represents a pointer to a DEF operand. */ |
27 | typedef tree *def_operand_p; |
28 | |
29 | /* This represents a pointer to a USE operand. */ |
30 | typedef ssa_use_operand_t *use_operand_p; |
31 | |
32 | /* NULL operand types. */ |
33 | #define NULL_USE_OPERAND_P ((use_operand_p)NULL) |
34 | #define NULL_DEF_OPERAND_P ((def_operand_p)NULL) |
35 | |
36 | /* This represents the USE operands of a stmt. */ |
37 | struct use_optype_d |
38 | { |
39 | struct use_optype_d *next; |
40 | struct ssa_use_operand_t use_ptr; |
41 | }; |
42 | typedef struct use_optype_d *use_optype_p; |
43 | |
44 | /* This structure represents a variable sized buffer which is allocated by the |
45 | operand memory manager. Operands are suballocated out of this block. The |
46 | MEM array varies in size. */ |
47 | |
48 | struct GTY((chain_next("%h.next" ))) ssa_operand_memory_d { |
49 | struct ssa_operand_memory_d *next; |
50 | char mem[1]; |
51 | }; |
52 | |
53 | /* Per-function operand caches. */ |
54 | struct GTY(()) ssa_operands { |
55 | struct ssa_operand_memory_d *operand_memory; |
56 | unsigned operand_memory_index; |
57 | /* Current size of the operand memory buffer. */ |
58 | unsigned int ssa_operand_mem_size; |
59 | |
60 | bool ops_active; |
61 | |
62 | struct use_optype_d * GTY ((skip ("" ))) free_uses; |
63 | }; |
64 | |
65 | #define USE_FROM_PTR(PTR) get_use_from_ptr (PTR) |
66 | #define DEF_FROM_PTR(PTR) get_def_from_ptr (PTR) |
67 | #define SET_USE(USE, V) set_ssa_use_from_ptr (USE, V) |
68 | #define SET_DEF(DEF, V) ((*(DEF)) = (V)) |
69 | |
70 | #define USE_STMT(USE) (USE)->loc.stmt |
71 | |
72 | #define USE_OP_PTR(OP) (&((OP)->use_ptr)) |
73 | #define USE_OP(OP) (USE_FROM_PTR (USE_OP_PTR (OP))) |
74 | |
75 | #define PHI_RESULT_PTR(PHI) gimple_phi_result_ptr (PHI) |
76 | #define PHI_RESULT(PHI) DEF_FROM_PTR (PHI_RESULT_PTR (PHI)) |
77 | #define SET_PHI_RESULT(PHI, V) SET_DEF (PHI_RESULT_PTR (PHI), (V)) |
78 | /* |
79 | #define PHI_ARG_DEF(PHI, I) USE_FROM_PTR (PHI_ARG_DEF_PTR ((PHI), (I))) |
80 | */ |
81 | #define PHI_ARG_DEF_PTR(PHI, I) gimple_phi_arg_imm_use_ptr ((PHI), (I)) |
82 | #define PHI_ARG_DEF(PHI, I) gimple_phi_arg_def ((PHI), (I)) |
83 | #define SET_PHI_ARG_DEF(PHI, I, V) \ |
84 | SET_USE (PHI_ARG_DEF_PTR ((PHI), (I)), (V)) |
85 | #define PHI_ARG_DEF_FROM_EDGE(PHI, E) \ |
86 | gimple_phi_arg_def_from_edge ((PHI), (E)) |
87 | #define PHI_ARG_DEF_PTR_FROM_EDGE(PHI, E) \ |
88 | gimple_phi_arg_imm_use_ptr_from_edge ((PHI), (E)) |
89 | #define PHI_ARG_INDEX_FROM_USE(USE) phi_arg_index_from_use (USE) |
90 | |
91 | |
92 | extern bool ssa_operands_active (struct function *); |
93 | extern void init_ssa_operands (struct function *fn); |
94 | extern void fini_ssa_operands (struct function *); |
95 | extern bool verify_ssa_operands (struct function *, gimple *stmt); |
96 | extern void free_stmt_operands (struct function *, gimple *); |
97 | extern void update_stmt_operands (struct function *, gimple *); |
98 | extern void swap_ssa_operands (gimple *, tree *, tree *); |
99 | extern bool verify_imm_links (FILE *f, tree var); |
100 | |
101 | extern void dump_immediate_uses_for (FILE *file, tree var); |
102 | extern void dump_immediate_uses (FILE *file); |
103 | extern void debug_immediate_uses (void); |
104 | extern void debug_immediate_uses_for (tree var); |
105 | |
106 | extern void unlink_stmt_vdef (gimple *); |
107 | |
108 | /* Return the tree pointed-to by USE. */ |
109 | inline tree |
110 | get_use_from_ptr (use_operand_p use) |
111 | { |
112 | return *(use->use); |
113 | } |
114 | |
115 | /* Return the tree pointed-to by DEF. */ |
116 | inline tree |
117 | get_def_from_ptr (def_operand_p def) |
118 | { |
119 | return *def; |
120 | } |
121 | |
122 | #endif /* GCC_TREE_SSA_OPERANDS_H */ |
123 | |