/usr/lib/gcc-cross/powerpc64-linux-gnu/7/plugin/include/valtrack.h is in gcc-7-plugin-dev-powerpc64-linux-gnu 7.3.0-16ubuntu3cross1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 | /* Infrastructure for tracking user variable locations and values
throughout compilation.
Copyright (C) 2010-2017 Free Software Foundation, Inc.
Contributed by Alexandre Oliva <aoliva@redhat.com>.
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_VALTRACK_H
#define GCC_VALTRACK_H
/* Debug uses of dead regs. */
/* Entry that maps a dead pseudo (REG) used in a debug insns that dies
at different blocks to the debug temp (DTEMP) it was replaced
with. */
struct dead_debug_global_entry
{
rtx reg;
rtx dtemp;
};
/* Descriptor for hash_table to hash by dead_debug_global_entry's REG
and map to DTEMP. */
struct dead_debug_hash_descr : free_ptr_hash <dead_debug_global_entry>
{
/* Hash on the pseudo number. */
static inline hashval_t hash (const dead_debug_global_entry *my);
/* Entries are identical if they refer to the same pseudo. */
static inline bool equal (const dead_debug_global_entry *my,
const dead_debug_global_entry *other);
};
/* Hash on the pseudo number. */
inline hashval_t
dead_debug_hash_descr::hash (const dead_debug_global_entry *my)
{
return REGNO (my->reg);
}
/* Entries are identical if they refer to the same pseudo. */
inline bool
dead_debug_hash_descr::equal (const dead_debug_global_entry *my,
const dead_debug_global_entry *other)
{
return my->reg == other->reg;
}
/* Maintain a global table of pseudos used in debug insns after their
deaths in other blocks, and debug temps their deathpoint values are
to be bound to. */
struct dead_debug_global
{
/* This hash table that maps pseudos to debug temps. */
hash_table<dead_debug_hash_descr> *htab;
/* For each entry in htab, the bit corresponding to its REGNO will
be set. */
bitmap used;
};
/* Node of a linked list of uses of dead REGs in debug insns. */
struct dead_debug_use
{
df_ref use;
struct dead_debug_use *next;
};
/* Linked list of the above, with a bitmap of the REGs in the
list. */
struct dead_debug_local
{
/* The first dead_debug_use entry in the list. */
struct dead_debug_use *head;
/* A pointer to the global tracking data structure. */
struct dead_debug_global *global;
/* A bitmap that has bits set for each REG used in the
dead_debug_use list, and for each entry in the global hash
table. */
bitmap used;
/* A bitmap that has bits set for each INSN that is to be
rescanned. */
bitmap to_rescan;
};
/* This type controls the behavior of dead_debug_insert_temp WRT
UREGNO and INSN. */
enum debug_temp_where
{
/* Bind a newly-created debug temporary to a REG for UREGNO, and
insert the debug insn before INSN. REG is expected to die at
INSN. */
DEBUG_TEMP_BEFORE_WITH_REG = -1,
/* Bind a newly-created debug temporary to the value INSN stores
in REG, and insert the debug insn before INSN. */
DEBUG_TEMP_BEFORE_WITH_VALUE = 0,
/* Bind a newly-created debug temporary to a REG for UREGNO, and
insert the debug insn after INSN. REG is expected to be set at
INSN. */
DEBUG_TEMP_AFTER_WITH_REG = 1,
/* Like DEBUG_TEMP_AFTER_WITH_REG, but force addition of a debug
temporary even if there is just a single debug use. This is used
on regs that are becoming REG_DEAD on INSN and so uses of the
reg later on are invalid. */
DEBUG_TEMP_AFTER_WITH_REG_FORCE = 2
};
extern void dead_debug_global_init (struct dead_debug_global *, bitmap);
extern void dead_debug_global_finish (struct dead_debug_global *, bitmap);
extern void dead_debug_local_init (struct dead_debug_local *, bitmap,
struct dead_debug_global *);
extern void dead_debug_local_finish (struct dead_debug_local *, bitmap);
extern void dead_debug_add (struct dead_debug_local *, df_ref, unsigned int);
extern int dead_debug_insert_temp (struct dead_debug_local *,
unsigned int uregno, rtx_insn *insn,
enum debug_temp_where);
extern void propagate_for_debug (rtx_insn *, rtx_insn *, rtx, rtx, basic_block);
#endif /* GCC_VALTRACK_H */
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