diff options
Diffstat (limited to 'gcc/expr.h')
| -rw-r--r-- | gcc/expr.h | 58 |
1 files changed, 39 insertions, 19 deletions
diff --git a/gcc/expr.h b/gcc/expr.h index c5b302a383..84002abb02 100644 --- a/gcc/expr.h +++ b/gcc/expr.h @@ -1,5 +1,5 @@ /* Definitions for code generation pass of GNU compiler. - Copyright (C) 1987-2016 Free Software Foundation, Inc. + Copyright (C) 1987-2017 Free Software Foundation, Inc. This file is part of GCC. @@ -71,8 +71,29 @@ 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); -/* 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, @@ -82,17 +103,16 @@ enum block_op_methods BLOCK_OP_TAILCALL }; -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, machine_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); +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. @@ -126,9 +146,6 @@ extern void emit_group_store (rtx, rtx, tree, int); 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); @@ -157,6 +174,11 @@ 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); @@ -166,7 +188,7 @@ extern rtx clear_storage_hints (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, @@ -175,10 +197,6 @@ 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 @@ -187,8 +205,7 @@ extern unsigned HOST_WIDE_INT move_by_pieces_ninsns (unsigned HOST_WIDE_INT, 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 @@ -197,8 +214,7 @@ extern int can_store_by_pieces (unsigned HOST_WIDE_INT, 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), +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. */ @@ -223,6 +239,10 @@ extern rtx push_block (rtx, int, int); 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); @@ -279,7 +299,7 @@ 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 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); |