/usr/lib/gcc-cross/powerpc64-linux-gnu/7/plugin/include/expr.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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 | /* Definitions for code generation pass of GNU compiler.
Copyright (C) 1987-2017 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_EXPR_H
#define GCC_EXPR_H
/* This is the 4th arg to `expand_expr'.
EXPAND_STACK_PARM means we are possibly expanding a call param onto
the stack.
EXPAND_SUM means it is ok to return a PLUS rtx or MULT rtx.
EXPAND_INITIALIZER is similar but also record any labels on forced_labels.
EXPAND_CONST_ADDRESS means it is ok to return a MEM whose address
is a constant that is not a legitimate address.
EXPAND_WRITE means we are only going to write to the resulting rtx.
EXPAND_MEMORY means we are interested in a memory result, even if
the memory is constant and we could have propagated a constant value,
or the memory is unaligned on a STRICT_ALIGNMENT target. */
enum expand_modifier {EXPAND_NORMAL = 0, EXPAND_STACK_PARM, EXPAND_SUM,
EXPAND_CONST_ADDRESS, EXPAND_INITIALIZER, EXPAND_WRITE,
EXPAND_MEMORY};
/* Prevent the compiler from deferring stack pops. See
inhibit_defer_pop for more information. */
#define NO_DEFER_POP (inhibit_defer_pop += 1)
/* Allow the compiler to defer stack pops. See inhibit_defer_pop for
more information. */
#define OK_DEFER_POP (inhibit_defer_pop -= 1)
/* This structure is used to pass around information about exploded
unary, binary and trinary expressions between expand_expr_real_1 and
friends. */
typedef struct separate_ops
{
enum tree_code code;
location_t location;
tree type;
tree op0, op1, op2;
} *sepops;
/* This is run during target initialization to set up which modes can be
used directly in memory and to initialize the block move optab. */
extern void init_expr_target (void);
/* This is run at the start of compiling a function. */
extern void init_expr (void);
/* Emit some rtl insns to move data between rtx's, converting machine modes.
Both modes must be floating or both fixed. */
extern void convert_move (rtx, rtx, int);
/* Convert an rtx to specified machine mode and return the result. */
extern rtx convert_to_mode (machine_mode, rtx, int);
/* Convert an rtx to MODE from OLDMODE and return the result. */
extern rtx convert_modes (machine_mode, machine_mode, rtx, int);
/* Expand a call to memcpy or memmove or memcmp, and return the result. */
extern rtx emit_block_op_via_libcall (enum built_in_function, rtx, rtx, rtx,
bool);
static inline rtx
emit_block_copy_via_libcall (rtx dst, rtx src, rtx size, bool tailcall = false)
{
return emit_block_op_via_libcall (BUILT_IN_MEMCPY, dst, src, size, tailcall);
}
static inline rtx
emit_block_move_via_libcall (rtx dst, rtx src, rtx size, bool tailcall = false)
{
return emit_block_op_via_libcall (BUILT_IN_MEMMOVE, dst, src, size, tailcall);
}
static inline rtx
emit_block_comp_via_libcall (rtx dst, rtx src, rtx size, bool tailcall = false)
{
return emit_block_op_via_libcall (BUILT_IN_MEMCMP, dst, src, size, tailcall);
}
/* Emit code to move a block Y to a block X. */
enum block_op_methods
{
BLOCK_OP_NORMAL,
BLOCK_OP_NO_LIBCALL,
BLOCK_OP_CALL_PARM,
/* Like BLOCK_OP_NORMAL, but the libcall can be tail call optimized. */
BLOCK_OP_TAILCALL
};
typedef rtx (*by_pieces_constfn) (void *, HOST_WIDE_INT, machine_mode);
extern rtx emit_block_move (rtx, rtx, rtx, enum block_op_methods);
extern rtx emit_block_move_hints (rtx, rtx, rtx, enum block_op_methods,
unsigned int, HOST_WIDE_INT,
unsigned HOST_WIDE_INT,
unsigned HOST_WIDE_INT,
unsigned HOST_WIDE_INT);
extern rtx emit_block_cmp_hints (rtx, rtx, rtx, tree, rtx, bool,
by_pieces_constfn, void *);
extern bool emit_storent_insn (rtx to, rtx from);
/* Copy all or part of a value X into registers starting at REGNO.
The number of registers to be filled is NREGS. */
extern void move_block_to_reg (int, rtx, int, machine_mode);
/* Copy all or part of a BLKmode value X out of registers starting at REGNO.
The number of registers to be filled is NREGS. */
extern void move_block_from_reg (int, rtx, int);
/* Generate a non-consecutive group of registers represented by a PARALLEL. */
extern rtx gen_group_rtx (rtx);
/* Load a BLKmode value into non-consecutive registers represented by a
PARALLEL. */
extern void emit_group_load (rtx, rtx, tree, int);
/* Similarly, but load into new temporaries. */
extern rtx emit_group_load_into_temps (rtx, rtx, tree, int);
/* Move a non-consecutive group of registers represented by a PARALLEL into
a non-consecutive group of registers represented by a PARALLEL. */
extern void emit_group_move (rtx, rtx);
/* Move a group of registers represented by a PARALLEL into pseudos. */
extern rtx emit_group_move_into_temps (rtx);
/* Store a BLKmode value from non-consecutive registers represented by a
PARALLEL. */
extern void emit_group_store (rtx, rtx, tree, int);
extern rtx maybe_emit_group_store (rtx, tree);
/* Mark REG as holding a parameter for the next CALL_INSN.
Mode is TYPE_MODE of the non-promoted parameter, or VOIDmode. */
extern void use_reg_mode (rtx *, rtx, machine_mode);
extern void clobber_reg_mode (rtx *, rtx, machine_mode);
extern rtx copy_blkmode_to_reg (machine_mode, tree);
/* Mark REG as holding a parameter for the next CALL_INSN. */
static inline void
use_reg (rtx *fusage, rtx reg)
{
use_reg_mode (fusage, reg, VOIDmode);
}
/* Mark REG as clobbered by the call with FUSAGE as CALL_INSN_FUNCTION_USAGE. */
static inline void
clobber_reg (rtx *fusage, rtx reg)
{
clobber_reg_mode (fusage, reg, VOIDmode);
}
/* Mark NREGS consecutive regs, starting at REGNO, as holding parameters
for the next CALL_INSN. */
extern void use_regs (rtx *, int, int);
/* Mark a PARALLEL as holding a parameter for the next CALL_INSN. */
extern void use_group_regs (rtx *, rtx);
#ifdef GCC_INSN_CODES_H
extern rtx expand_cmpstrn_or_cmpmem (insn_code, rtx, rtx, rtx, tree, rtx,
HOST_WIDE_INT);
#endif
/* Write zeros through the storage of OBJECT.
If OBJECT has BLKmode, SIZE is its length in bytes. */
extern rtx clear_storage (rtx, rtx, enum block_op_methods);
extern rtx clear_storage_hints (rtx, rtx, enum block_op_methods,
unsigned int, HOST_WIDE_INT,
unsigned HOST_WIDE_INT,
unsigned HOST_WIDE_INT,
unsigned HOST_WIDE_INT);
/* The same, but always output an library call. */
extern rtx set_storage_via_libcall (rtx, rtx, rtx, bool = false);
/* Expand a setmem pattern; return true if successful. */
extern bool set_storage_via_setmem (rtx, rtx, rtx, unsigned int,
unsigned int, HOST_WIDE_INT,
unsigned HOST_WIDE_INT,
unsigned HOST_WIDE_INT,
unsigned HOST_WIDE_INT);
/* Return nonzero if it is desirable to store LEN bytes generated by
CONSTFUN with several move instructions by store_by_pieces
function. CONSTFUNDATA is a pointer which will be passed as argument
in every CONSTFUN call.
ALIGN is maximum alignment we can assume.
MEMSETP is true if this is a real memset/bzero, not a copy
of a const string. */
extern int can_store_by_pieces (unsigned HOST_WIDE_INT,
by_pieces_constfn,
void *, unsigned int, bool);
/* Generate several move instructions to store LEN bytes generated by
CONSTFUN to block TO. (A MEM rtx with BLKmode). CONSTFUNDATA is a
pointer which will be passed as argument in every CONSTFUN call.
ALIGN is maximum alignment we can assume.
MEMSETP is true if this is a real memset/bzero, not a copy.
Returns TO + LEN. */
extern rtx store_by_pieces (rtx, unsigned HOST_WIDE_INT, by_pieces_constfn,
void *, unsigned int, bool, int);
/* Emit insns to set X from Y. */
extern rtx_insn *emit_move_insn (rtx, rtx);
extern rtx_insn *gen_move_insn (rtx, rtx);
/* Emit insns to set X from Y, with no frills. */
extern rtx_insn *emit_move_insn_1 (rtx, rtx);
extern rtx_insn *emit_move_complex_push (machine_mode, rtx, rtx);
extern rtx_insn *emit_move_complex_parts (rtx, rtx);
extern rtx read_complex_part (rtx, bool);
extern void write_complex_part (rtx, rtx, bool);
extern rtx read_complex_part (rtx, bool);
extern rtx emit_move_resolve_push (machine_mode, rtx);
/* Push a block of length SIZE (perhaps variable)
and return an rtx to address the beginning of the block. */
extern rtx push_block (rtx, int, int);
/* Generate code to push something onto the stack, given its mode and type. */
extern bool emit_push_insn (rtx, machine_mode, tree, rtx, unsigned int,
int, rtx, int, rtx, rtx, int, rtx, bool);
/* Extract the accessible bit-range from a COMPONENT_REF. */
extern void get_bit_range (unsigned HOST_WIDE_INT *, unsigned HOST_WIDE_INT *,
tree, HOST_WIDE_INT *, tree *);
/* Expand an assignment that stores the value of FROM into TO. */
extern void expand_assignment (tree, tree, bool);
/* Generate code for computing expression EXP,
and storing the value into TARGET.
If SUGGEST_REG is nonzero, copy the value through a register
and return that register, if that is possible. */
extern rtx store_expr_with_bounds (tree, rtx, int, bool, bool, tree);
extern rtx store_expr (tree, rtx, int, bool, bool);
/* Given an rtx that may include add and multiply operations,
generate them as insns and return a pseudo-reg containing the value.
Useful after calling expand_expr with 1 as sum_ok. */
extern rtx force_operand (rtx, rtx);
/* Work horses for expand_expr. */
extern rtx expand_expr_real (tree, rtx, machine_mode,
enum expand_modifier, rtx *, bool);
extern rtx expand_expr_real_1 (tree, rtx, machine_mode,
enum expand_modifier, rtx *, bool);
extern rtx expand_expr_real_2 (sepops, rtx, machine_mode,
enum expand_modifier);
/* Generate code for computing expression EXP.
An rtx for the computed value is returned. The value is never null.
In the case of a void EXP, const0_rtx is returned. */
static inline rtx
expand_expr (tree exp, rtx target, machine_mode mode,
enum expand_modifier modifier)
{
return expand_expr_real (exp, target, mode, modifier, NULL, false);
}
static inline rtx
expand_normal (tree exp)
{
return expand_expr_real (exp, NULL_RTX, VOIDmode, EXPAND_NORMAL, NULL, false);
}
/* Return the tree node and offset if a given argument corresponds to
a string constant. */
extern tree string_constant (tree, tree *);
/* Two different ways of generating switch statements. */
extern int try_casesi (tree, tree, tree, tree, rtx, rtx, rtx, int);
extern int try_tablejump (tree, tree, tree, tree, rtx, rtx, int);
extern int safe_from_p (const_rtx, tree, int);
/* Get the personality libfunc for a function decl. */
rtx get_personality_function (tree);
/* Determine whether the LEN bytes can be moved by using several move
instructions. Return nonzero if a call to move_by_pieces should
succeed. */
extern bool can_move_by_pieces (unsigned HOST_WIDE_INT, unsigned int);
extern unsigned HOST_WIDE_INT highest_pow2_factor (const_tree);
extern bool categorize_ctor_elements (const_tree, HOST_WIDE_INT *,
HOST_WIDE_INT *, bool *);
extern void expand_operands (tree, tree, rtx, rtx*, rtx*,
enum expand_modifier);
/* rtl.h and tree.h were included. */
/* Return an rtx for the size in bytes of the value of an expr. */
extern rtx expr_size (tree);
#endif /* GCC_EXPR_H */
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