/* Definitions for code generation pass of GNU compiler.
- Copyright (C) 1987-2014 Free Software Foundation, Inc.
+ Copyright (C) 1987-2020 Free Software Foundation, Inc.
This file is part of GCC.
#ifndef GCC_EXPR_H
#define GCC_EXPR_H
-/* For inhibit_defer_pop */
-#include "hashtab.h"
-#include "hash-set.h"
-#include "vec.h"
-#include "machmode.h"
-#include "tm.h"
-#include "hard-reg-set.h"
-#include "input.h"
-#include "function.h"
-/* For XEXP, GEN_INT, rtx_code */
-#include "rtl.h"
-/* For optimize_size */
-#include "flags.h"
-/* For tree_fits_[su]hwi_p, tree_to_[su]hwi, fold_convert, size_binop,
- ssize_int, TREE_CODE, TYPE_SIZE, int_size_in_bytes, */
-#include "tree-core.h"
-/* For GET_MODE_BITSIZE, word_mode */
-#include "insn-config.h"
-
/* This is the 4th arg to `expand_expr'.
EXPAND_STACK_PARM means we are possibly expanding a call param onto
the stack.
tree op0, op1, op2;
} *sepops;
\f
-/* Functions from expmed.c: */
-
-/* Arguments MODE, RTX: return an rtx for the negation of that value.
- May emit insns. */
-extern rtx negate_rtx (machine_mode, rtx);
-
-/* Expand a logical AND operation. */
-extern rtx expand_and (machine_mode, rtx, rtx, rtx);
-
-/* Emit a store-flag operation. */
-extern rtx emit_store_flag (rtx, enum rtx_code, rtx, rtx, machine_mode,
- int, int);
-
-/* Like emit_store_flag, but always succeeds. */
-extern rtx emit_store_flag_force (rtx, enum rtx_code, rtx, rtx,
- machine_mode, int, int);
-
-/* Choose a minimal N + 1 bit approximation to 1/D that can be used to
- replace division by D, and put the least significant N bits of the result
- in *MULTIPLIER_PTR and return the most significant bit. */
-extern unsigned HOST_WIDE_INT choose_multiplier (unsigned HOST_WIDE_INT, int,
- int, unsigned HOST_WIDE_INT *,
- int *, int *);
-\f
-/* Functions from expr.c: */
-
/* 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);
/* Convert an rtx to MODE from OLDMODE and return the result. */
extern rtx convert_modes (machine_mode, machine_mode, rtx, int);
-/* Emit code to move a block Y to a block X. */
+/* 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
+ BLOCK_OP_TAILCALL,
+ /* Like BLOCK_OP_NO_LIBCALL, but instead of emitting a libcall return
+ pc_rtx to indicate nothing has been emitted and let the caller handle
+ it. */
+ BLOCK_OP_NO_LIBCALL_RET
};
-extern GTY(()) tree block_clear_fn;
-extern void init_block_move_fn (const char *);
-extern void init_block_clear_fn (const char *);
+typedef rtx (*by_pieces_constfn) (void *, HOST_WIDE_INT, scalar_int_mode);
extern rtx emit_block_move (rtx, rtx, rtx, enum block_op_methods);
-extern rtx emit_block_move_via_libcall (rtx, rtx, rtx, bool);
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);
+ unsigned HOST_WIDE_INT,
+ bool bail_out_libcall = false,
+ bool *is_move_done = NULL,
+ bool might_overlap = false);
+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.
/* Load a BLKmode value into non-consecutive registers represented by a
PARALLEL. */
-extern void emit_group_load (rtx, rtx, tree, int);
+extern void emit_group_load (rtx, rtx, tree, poly_int64);
/* Similarly, but load into new temporaries. */
-extern rtx emit_group_load_into_temps (rtx, rtx, tree, int);
+extern rtx emit_group_load_into_temps (rtx, rtx, tree, poly_int64);
/* Move a non-consecutive group of registers represented by a PARALLEL into
a non-consecutive group of registers represented by a PARALLEL. */
/* Store a BLKmode value from non-consecutive registers represented by a
PARALLEL. */
-extern void emit_group_store (rtx, rtx, tree, int);
+extern void emit_group_store (rtx, rtx, tree, poly_int64);
extern rtx maybe_emit_group_store (rtx, tree);
-/* Copy BLKmode object from a set of registers. */
-extern void copy_blkmode_from_reg (rtx, 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);
/* 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);
unsigned HOST_WIDE_INT,
unsigned HOST_WIDE_INT);
/* The same, but always output an library call. */
-rtx set_storage_via_libcall (rtx, rtx, rtx, bool);
+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 HOST_WIDE_INT,
unsigned HOST_WIDE_INT);
-extern unsigned HOST_WIDE_INT move_by_pieces_ninsns (unsigned HOST_WIDE_INT,
- unsigned int,
- unsigned 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
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,
- rtx (*) (void *, HOST_WIDE_INT,
- machine_mode),
+ by_pieces_constfn,
void *, unsigned int, bool);
/* Generate several move instructions to store LEN bytes generated by
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,
- rtx (*) (void *, HOST_WIDE_INT, machine_mode),
- void *, unsigned int, bool, int);
+extern rtx store_by_pieces (rtx, unsigned HOST_WIDE_INT, by_pieces_constfn,
+ void *, unsigned int, bool, memop_ret);
/* Emit insns to set X from Y. */
extern rtx_insn *emit_move_insn (rtx, rtx);
-extern rtx gen_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);
+extern rtx push_block (rtx, poly_int64, int);
/* Generate code to push something onto the stack, given its mode and type. */
-extern void emit_push_insn (rtx, machine_mode, tree, rtx, unsigned int,
- int, rtx, int, rtx, rtx, int, rtx);
+extern bool emit_push_insn (rtx, machine_mode, tree, rtx, unsigned int,
+ int, rtx, poly_int64, rtx, rtx, int, rtx, bool);
+
+/* Extract the accessible bit-range from a COMPONENT_REF. */
+extern void get_bit_range (poly_uint64_pod *, poly_uint64_pod *, tree,
+ poly_int64_pod *, tree *);
/* Expand an assignment that stores the value of FROM into TO. */
extern void expand_assignment (tree, tree, bool);
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 (tree, rtx, int, bool);
+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.
return expand_expr_real (exp, NULL_RTX, VOIDmode, EXPAND_NORMAL, NULL, false);
}
-/* At the start of a function, record that we have no previously-pushed
- arguments waiting to be popped. */
-extern void init_pending_stack_adjust (void);
-
-/* Discard any pending stack adjustment. */
-extern void discard_pending_stack_adjust (void);
-
-/* When exiting from function, if safe, clear out any pending stack adjust
- so the adjustment won't get done. */
-extern void clear_pending_stack_adjust (void);
-
-/* Pop any previously-pushed arguments that have not been popped yet. */
-extern void do_pending_stack_adjust (void);
-
-/* Struct for saving/restoring of pending_stack_adjust/stack_pointer_delta
- values. */
-
-struct saved_pending_stack_adjust
-{
- /* Saved value of pending_stack_adjust. */
- int x_pending_stack_adjust;
-
- /* Saved value of stack_pointer_delta. */
- int x_stack_pointer_delta;
-};
-
-/* Remember pending_stack_adjust/stack_pointer_delta.
- To be used around code that may call do_pending_stack_adjust (),
- but the generated code could be discarded e.g. using delete_insns_since. */
-
-extern void save_pending_stack_adjust (saved_pending_stack_adjust *);
-
-/* Restore the saved pending_stack_adjust/stack_pointer_delta. */
-
-extern void restore_pending_stack_adjust (saved_pending_stack_adjust *);
/* Return the tree node and offset if a given argument corresponds to
a string constant. */
-extern tree string_constant (tree, tree *);
-
-/* Generate code to evaluate EXP and jump to LABEL if the value is zero. */
-extern void jumpifnot (tree, rtx, int);
-extern void jumpifnot_1 (enum tree_code, tree, tree, rtx, int);
-
-/* Generate code to evaluate EXP and jump to LABEL if the value is nonzero. */
-extern void jumpif (tree, rtx, int);
-extern void jumpif_1 (enum tree_code, tree, tree, rtx, int);
+extern tree string_constant (tree, tree *, tree *, tree *);
-/* Generate code to evaluate EXP and jump to IF_FALSE_LABEL if
- the result is zero, or IF_TRUE_LABEL if the result is one. */
-extern void do_jump (tree, rtx, rtx, int);
-extern void do_jump_1 (enum tree_code, tree, tree, rtx, rtx, int);
-
-extern void do_compare_rtx_and_jump (rtx, rtx, enum rtx_code, int,
- machine_mode, rtx, rtx, rtx, int);
+extern enum tree_code maybe_optimize_mod_cmp (enum tree_code, 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);
-
-/* Functions from alias.c */
-#include "alias.h"
+extern int try_casesi (tree, tree, tree, tree, rtx, rtx, rtx, profile_probability);
+extern int try_tablejump (tree, tree, tree, tree, rtx, rtx, profile_probability);
-\f
-/* 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);
-
-/* Return a wide integer for the size in bytes of the value of EXP, or -1
- if the size can vary or is larger than an integer. */
-extern HOST_WIDE_INT int_expr_size (tree);
-
-/* Return an rtx that refers to the value returned by a function
- in its original home. This becomes invalid if any more code is emitted. */
-extern rtx hard_function_value (const_tree, const_tree, const_tree, int);
-
-extern rtx prepare_call_address (tree, rtx, rtx, rtx *, int, int);
-
-extern bool shift_return_value (machine_mode, bool, rtx);
-
-extern rtx expand_call (tree, rtx, int);
-
-extern void fixup_tail_calls (void);
-
-#ifdef TREE_CODE
-extern rtx expand_variable_shift (enum tree_code, machine_mode,
- rtx, tree, rtx, int);
-extern rtx expand_shift (enum tree_code, machine_mode, rtx, int, rtx,
- int);
-extern rtx expand_divmod (int, enum tree_code, machine_mode, rtx, rtx,
- rtx, int);
-#endif
-
-/* Return the CODE_LABEL rtx for a LABEL_DECL, creating it if necessary. */
-extern rtx label_rtx (tree);
-
-/* As label_rtx, but additionally the label is placed on the forced label
- list of its containing function (i.e. it is treated as reachable even
- if how is not obvious). */
-extern rtx force_label_rtx (tree);
-
-/* Return an rtx like arg but sans any constant terms.
- Returns the original rtx if it has no constant terms.
- The constant terms are added and stored via a second arg. */
-extern rtx eliminate_constant_term (rtx, rtx *);
-
-/* Convert arg to a valid memory address for specified machine mode that points
- to a specific named address space, by emitting insns to perform arithmetic
- if necessary. */
-extern rtx memory_address_addr_space (machine_mode, rtx, addr_space_t);
-
-/* Like memory_address_addr_space, except assume the memory address points to
- the generic named address space. */
-#define memory_address(MODE,RTX) \
- memory_address_addr_space ((MODE), (RTX), ADDR_SPACE_GENERIC)
-
-/* Return a memory reference like MEMREF, but with its mode changed
- to MODE and its address changed to ADDR.
- (VOIDmode means don't change the mode.
- NULL for ADDR means don't change the address.) */
-extern rtx change_address (rtx, machine_mode, rtx);
-
-/* Return a memory reference like MEMREF, but with its mode changed
- to MODE and its address offset by OFFSET bytes. */
-#define adjust_address(MEMREF, MODE, OFFSET) \
- adjust_address_1 (MEMREF, MODE, OFFSET, 1, 1, 0, 0)
-
-/* Likewise, but the reference is not required to be valid. */
-#define adjust_address_nv(MEMREF, MODE, OFFSET) \
- adjust_address_1 (MEMREF, MODE, OFFSET, 0, 1, 0, 0)
-
-/* Return a memory reference like MEMREF, but with its mode changed
- to MODE and its address offset by OFFSET bytes. Assume that it's
- for a bitfield and conservatively drop the underlying object if we
- cannot be sure to stay within its bounds. */
-#define adjust_bitfield_address(MEMREF, MODE, OFFSET) \
- adjust_address_1 (MEMREF, MODE, OFFSET, 1, 1, 1, 0)
-
-/* As for adjust_bitfield_address, but specify that the width of
- BLKmode accesses is SIZE bytes. */
-#define adjust_bitfield_address_size(MEMREF, MODE, OFFSET, SIZE) \
- adjust_address_1 (MEMREF, MODE, OFFSET, 1, 1, 1, SIZE)
-
-/* Likewise, but the reference is not required to be valid. */
-#define adjust_bitfield_address_nv(MEMREF, MODE, OFFSET) \
- adjust_address_1 (MEMREF, MODE, OFFSET, 0, 1, 1, 0)
-
-/* Return a memory reference like MEMREF, but with its mode changed
- to MODE and its address changed to ADDR, which is assumed to be
- increased by OFFSET bytes from MEMREF. */
-#define adjust_automodify_address(MEMREF, MODE, ADDR, OFFSET) \
- adjust_automodify_address_1 (MEMREF, MODE, ADDR, OFFSET, 1)
-
-/* Likewise, but the reference is not required to be valid. */
-#define adjust_automodify_address_nv(MEMREF, MODE, ADDR, OFFSET) \
- adjust_automodify_address_1 (MEMREF, MODE, ADDR, OFFSET, 0)
-
-extern rtx adjust_address_1 (rtx, machine_mode, HOST_WIDE_INT, int, int,
- int, HOST_WIDE_INT);
-extern rtx adjust_automodify_address_1 (rtx, machine_mode, rtx,
- HOST_WIDE_INT, int);
-
-/* Return a memory reference like MEMREF, but whose address is changed by
- adding OFFSET, an RTX, to it. POW2 is the highest power of two factor
- known to be in OFFSET (possibly 1). */
-extern rtx offset_address (rtx, rtx, unsigned HOST_WIDE_INT);
-
-/* Definitions from emit-rtl.c */
-#include "emit-rtl.h"
-
-/* Return a memory reference like MEMREF, but with its mode widened to
- MODE and adjusted by OFFSET. */
-extern rtx widen_memory_access (rtx, machine_mode, HOST_WIDE_INT);
-
-/* Return a memory reference like MEMREF, but which is known to have a
- valid address. */
-extern rtx validize_mem (rtx);
-
-extern rtx use_anchored_address (rtx);
-
-/* Given REF, a MEM, and T, either the type of X or the expression
- corresponding to REF, set the memory attributes. OBJECTP is nonzero
- if we are making a new object of this type. */
-extern void set_mem_attributes (rtx, tree, int);
-
-/* Similar, except that BITPOS has not yet been applied to REF, so if
- we alter MEM_OFFSET according to T then we should subtract BITPOS
- expecting that it'll be added back in later. */
-extern void set_mem_attributes_minus_bitpos (rtx, tree, int, HOST_WIDE_INT);
-
-/* Return OFFSET if XEXP (MEM, 0) - OFFSET is known to be ALIGN
- bits aligned for 0 <= OFFSET < ALIGN / BITS_PER_UNIT, or
- -1 if not known. */
-extern int get_mem_align_offset (rtx, unsigned int);
-
-/* Assemble the static constant template for function entry trampolines. */
-extern rtx assemble_trampoline_template (void);
-
-/* Copy given rtx to a new temp reg and return that. */
-extern rtx copy_to_reg (rtx);
-
-/* Like copy_to_reg but always make the reg Pmode. */
-extern rtx copy_addr_to_reg (rtx);
-
-/* Like copy_to_reg but always make the reg the specified mode MODE. */
-extern rtx copy_to_mode_reg (machine_mode, rtx);
-
-/* Copy given rtx to given temp reg and return that. */
-extern rtx copy_to_suggested_reg (rtx, rtx, machine_mode);
-
-/* Copy a value to a register if it isn't already a register.
- Args are mode (in case value is a constant) and the value. */
-extern rtx force_reg (machine_mode, rtx);
-
-/* Return given rtx, copied into a new temp reg if it was in memory. */
-extern rtx force_not_mem (rtx);
-
-/* Return mode and signedness to use when an argument or result in the
- given mode is promoted. */
-extern machine_mode promote_function_mode (const_tree, machine_mode, int *,
- const_tree, int);
-
-/* Return mode and signedness to use when an object in the given mode
- is promoted. */
-extern machine_mode promote_mode (const_tree, machine_mode, int *);
-
-/* Return mode and signedness to use when object is promoted. */
-machine_mode promote_decl_mode (const_tree, int *);
-
-/* Remove some bytes from the stack. An rtx says how many. */
-extern void adjust_stack (rtx);
-
-/* Add some bytes to the stack. An rtx says how many. */
-extern void anti_adjust_stack (rtx);
-
-/* Add some bytes to the stack while probing it. An rtx says how many. */
-extern void anti_adjust_stack_and_probe (rtx, bool);
-
-/* This enum is used for the following two functions. */
-enum save_level {SAVE_BLOCK, SAVE_FUNCTION, SAVE_NONLOCAL};
-
-/* Save the stack pointer at the specified level. */
-extern void emit_stack_save (enum save_level, rtx *);
-
-/* Restore the stack pointer from a save area of the specified level. */
-extern void emit_stack_restore (enum save_level, rtx);
-
-/* Invoke emit_stack_save for the nonlocal_goto_save_area. */
-extern void update_nonlocal_goto_save_area (void);
-
-/* Allocate some space on the stack dynamically and return its address. */
-extern rtx allocate_dynamic_stack_space (rtx, unsigned, unsigned, bool);
-
-/* Emit one stack probe at ADDRESS, an address within the stack. */
-extern void emit_stack_probe (rtx);
-
-/* Probe a range of stack addresses from FIRST to FIRST+SIZE, inclusive.
- FIRST is a constant and size is a Pmode RTX. These are offsets from
- the current stack pointer. STACK_GROWS_DOWNWARD says whether to add
- or subtract them from the stack pointer. */
-extern void probe_stack_range (HOST_WIDE_INT, rtx);
-
-/* Return an rtx that refers to the value returned by a library call
- in its original home. This becomes invalid if any more code is emitted. */
-extern rtx hard_libcall_value (machine_mode, rtx);
-
-extern void store_bit_field (rtx, unsigned HOST_WIDE_INT,
- unsigned HOST_WIDE_INT,
- unsigned HOST_WIDE_INT,
- unsigned HOST_WIDE_INT,
- machine_mode, rtx);
-extern rtx extract_bit_field (rtx, unsigned HOST_WIDE_INT,
- unsigned HOST_WIDE_INT, int, rtx,
- machine_mode, machine_mode);
-extern rtx extract_low_bits (machine_mode, machine_mode, rtx);
-extern rtx expand_mult (machine_mode, rtx, rtx, rtx, int);
-extern rtx expand_mult_highpart_adjust (machine_mode, rtx, rtx, rtx, rtx, int);
-
-extern rtx assemble_static_space (unsigned HOST_WIDE_INT);
extern int safe_from_p (const_rtx, tree, int);
-extern bool split_comparison (enum rtx_code, machine_mode,
- enum rtx_code *, enum rtx_code *);
/* Get the personality libfunc for a function decl. */
rtx get_personality_function (tree);
-
-/* In stmt.c */
-
-/* Expand a GIMPLE_SWITCH statement. */
-extern void expand_case (gimple);
-
-/* Like expand_case but special-case for SJLJ exception dispatching. */
-extern void expand_sjlj_dispatch_table (rtx, vec<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 int can_move_by_pieces (unsigned HOST_WIDE_INT, unsigned int);
+extern bool can_move_by_pieces (unsigned HOST_WIDE_INT, unsigned int);
extern unsigned HOST_WIDE_INT highest_pow2_factor (const_tree);
-bool array_at_struct_end_p (tree);
-
-/* Return a tree of sizetype representing the size, in bytes, of the element
- of EXP, an ARRAY_REF or an ARRAY_RANGE_REF. */
-extern tree array_ref_element_size (tree);
extern bool categorize_ctor_elements (const_tree, HOST_WIDE_INT *,
- HOST_WIDE_INT *, bool *);
+ HOST_WIDE_INT *, HOST_WIDE_INT *,
+ bool *);
+
+extern void expand_operands (tree, tree, rtx, rtx*, rtx*,
+ enum expand_modifier);
-/* Return a tree representing the offset, in bytes, of the field referenced
- by EXP. This does not include any offset in DECL_FIELD_BIT_OFFSET. */
-extern tree component_ref_field_offset (tree);
+/* 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 */