expr.h

早期freebsd实现

  OPTAB_MUST_WIDEN
};

/* SYMBOL_REF rtx's for the library functions that are called
   implicitly and not via optabs.  */

extern rtx extendsfdf2_libfunc;
extern rtx extendsfxf2_libfunc;
extern rtx extendsftf2_libfunc;
extern rtx extenddfxf2_libfunc;
extern rtx extenddftf2_libfunc;

extern rtx truncdfsf2_libfunc;
extern rtx truncxfsf2_libfunc;
extern rtx trunctfsf2_libfunc;
extern rtx truncxfdf2_libfunc;
extern rtx trunctfdf2_libfunc;

extern rtx memcpy_libfunc;
extern rtx bcopy_libfunc;
extern rtx memcmp_libfunc;
extern rtx bcmp_libfunc;
extern rtx memset_libfunc;
extern rtx bzero_libfunc;

extern rtx eqsf2_libfunc;
extern rtx nesf2_libfunc;
extern rtx gtsf2_libfunc;
extern rtx gesf2_libfunc;
extern rtx ltsf2_libfunc;
extern rtx lesf2_libfunc;

extern rtx eqdf2_libfunc;
extern rtx nedf2_libfunc;
extern rtx gtdf2_libfunc;
extern rtx gedf2_libfunc;
extern rtx ltdf2_libfunc;
extern rtx ledf2_libfunc;

extern rtx eqxf2_libfunc;
extern rtx nexf2_libfunc;
extern rtx gtxf2_libfunc;
extern rtx gexf2_libfunc;
extern rtx ltxf2_libfunc;
extern rtx lexf2_libfunc;

extern rtx eqtf2_libfunc;
extern rtx netf2_libfunc;
extern rtx gttf2_libfunc;
extern rtx getf2_libfunc;
extern rtx lttf2_libfunc;
extern rtx letf2_libfunc;

extern rtx floatsisf_libfunc;
extern rtx floatdisf_libfunc;
extern rtx floattisf_libfunc;

extern rtx floatsidf_libfunc;
extern rtx floatdidf_libfunc;
extern rtx floattidf_libfunc;

extern rtx floatsixf_libfunc;
extern rtx floatdixf_libfunc;
extern rtx floattixf_libfunc;

extern rtx floatsitf_libfunc;
extern rtx floatditf_libfunc;
extern rtx floattitf_libfunc;

extern rtx fixsfsi_libfunc;
extern rtx fixsfdi_libfunc;
extern rtx fixsfti_libfunc;

extern rtx fixdfsi_libfunc;
extern rtx fixdfdi_libfunc;
extern rtx fixdfti_libfunc;

extern rtx fixxfsi_libfunc;
extern rtx fixxfdi_libfunc;
extern rtx fixxfti_libfunc;

extern rtx fixtfsi_libfunc;
extern rtx fixtfdi_libfunc;
extern rtx fixtfti_libfunc;

extern rtx fixunssfsi_libfunc;
extern rtx fixunssfdi_libfunc;
extern rtx fixunssfti_libfunc;

extern rtx fixunsdfsi_libfunc;
extern rtx fixunsdfdi_libfunc;
extern rtx fixunsdfti_libfunc;

extern rtx fixunsxfsi_libfunc;
extern rtx fixunsxfdi_libfunc;
extern rtx fixunsxfti_libfunc;

extern rtx fixunstfsi_libfunc;
extern rtx fixunstfdi_libfunc;
extern rtx fixunstfti_libfunc;

typedef rtx (*rtxfun) ();

/* Indexed by the rtx-code for a conditional (eg. EQ, LT,...)
   gives the gen_function to make a branch to test that condition.  */

extern rtxfun bcc_gen_fctn[NUM_RTX_CODE];

/* Indexed by the rtx-code for a conditional (eg. EQ, LT,...)
   gives the insn code to make a store-condition insn
   to test that condition.  */

extern enum insn_code setcc_gen_code[NUM_RTX_CODE];

/* Expand a binary operation given optab and rtx operands.  */
extern rtx expand_binop ();

/* Expand a binary operation with both signed and unsigned forms.  */
extern rtx sign_expand_binop ();

/* Expand a unary arithmetic operation given optab rtx operand.  */
extern rtx expand_unop ();

/* Expand the complex absolute value operation.  */
extern rtx expand_complex_abs ();

/* Arguments MODE, RTX: return an rtx for the negation of that value.
   May emit insns.  */
extern rtx negate_rtx ();

/* Expand a logical AND operation.  */
extern rtx expand_and ();

/* Emit a store-flag operation.  */
extern rtx emit_store_flag ();

/* Return the CODE_LABEL rtx for a LABEL_DECL, creating it if necessary.  */
extern rtx label_rtx ();

/* Given a JUMP_INSN, return a description of the test being made.  */
extern rtx get_condition ();

/* Return the INSN_CODE to use for an extend operation.  */
extern enum insn_code can_extend_p ();

/* Initialize the tables that control conversion between fixed and
   floating values.  */
extern void init_fixtab ();
extern void init_floattab ();

/* Generate code for a FIX_EXPR.  */
extern void expand_fix ();

/* Generate code for a FLOAT_EXPR.  */
extern void expand_float ();

/* Create but don't emit one rtl instruction to add one rtx into another.
   Modes must match; operands must meet the operation's predicates.
   Likewise for subtraction and for just copying.
   These do not call protect_from_queue; caller must do so.  */
extern rtx gen_add2_insn ();
extern rtx gen_sub2_insn ();
extern rtx gen_move_insn ();

/* Emit one rtl instruction to store zero in specified rtx.  */
extern void emit_clr_insn ();

/* Emit one rtl insn to store 1 in specified rtx assuming it contains 0.  */
extern void emit_0_to_1_insn ();

/* Emit one rtl insn to compare two rtx's.  */
extern void emit_cmp_insn ();

/* Generate rtl to compare two rtx's, will call emit_cmp_insn.  */
extern rtx compare_from_rtx ();

/* 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 ();

/* Convert an rtx to specified machine mode and return the result.  */
extern rtx convert_to_mode ();

/* Emit code to push some arguments and call a library routine,
   storing the value in a specified place.  Calling sequence is
   complicated.  */
extern void emit_library_call ();

/* 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 ();

/* Return an rtx for the size in bytes of the value of an expr.  */
extern rtx expr_size ();

extern rtx lookup_static_chain ();

/* 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 ();

/* Convert arg to a valid memory address for specified machine mode,
   by emitting insns to perform arithmetic if nec.  */
extern rtx memory_address ();

/* Like `memory_address' but pretent `flag_force_addr' is 0.  */
extern rtx memory_address_noforce ();

/* 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 ();

/* Return a memory reference like MEMREF, but which is known to have a
   valid address.  */

extern rtx validize_mem ();

/* Convert a stack slot address ADDR valid in function FNDECL
   into an address valid in this function (using a static chain).  */
extern rtx fix_lexical_addr ();

/* Return the address of the trampoline for entering nested fn FUNCTION.  */
extern rtx trampoline_address ();

/* Assemble the static constant template for function entry trampolines.  */
extern rtx assemble_trampoline_template ();

/* Return 1 if two rtx's are equivalent in structure and elements.  */
extern int rtx_equal_p ();

/* Given rtx, return new rtx whose address won't be affected by
   any side effects.  It has been copied to a new temporary reg.  */
extern rtx stabilize ();

/* Given an rtx, copy all regs it refers to into new temps
   and return a modified copy that refers to the new temps.  */
extern rtx copy_all_regs ();

/* Copy given rtx to a new temp reg and return that.  */
extern rtx copy_to_reg ();

/* Like copy_to_reg but always make the reg Pmode.  */
extern rtx copy_addr_to_reg ();

/* Like copy_to_reg but always make the reg the specified mode MODE.  */
extern rtx copy_to_mode_reg ();

/* Copy given rtx to given temp reg and return that.  */
extern rtx copy_to_suggested_reg ();

/* 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 ();

/* Return given rtx, copied into a new temp reg if it was in memory.  */
extern rtx force_not_mem ();

/* Remove some bytes from the stack.  An rtx says how many.  */
extern void adjust_stack ();

/* Add some bytes to the stack.  An rtx says how many.  */
extern void anti_adjust_stack ();

/* 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 ();

/* Restore the stack pointer from a save area of the specified level.  */
extern void emit_stack_restore ();

/* Allocate some space on the stack dynamically and return its address.  An rtx
   says how many bytes.  */
extern rtx allocate_dynamic_stack_space ();

/* Emit code to copy function value to a new temp reg and return that reg.  */
extern rtx function_value ();

/* 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 ();

/* 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 ();

/* Emit code to copy function value to a specified place.  */
extern void copy_function_value ();

/* Given an rtx, return an rtx for a value rounded up to a multiple
   of STACK_BOUNDARY / BITS_PER_UNIT.  */
extern rtx round_push ();

/* Push a block of length SIZE (perhaps variable)
   and return an rtx to address the beginning of the block.  */
extern rtx push_block ();

/* 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 ();

extern rtx prepare_call_address ();
extern rtx expand_call ();
extern void emit_call_1 ();

extern void emit_block_move ();
extern void emit_push_insn ();
extern void use_regs ();
extern void move_block_to_reg ();

extern rtx store_bit_field ();
extern rtx extract_bit_field ();
extern rtx expand_shift ();
extern rtx expand_mult ();
extern rtx expand_divmod ();
extern rtx expand_mult_add ();
extern rtx expand_stmt_expr ();
extern rtx emit_no_conflict_block ();
extern void emit_libcall_block ();

extern void jumpifnot ();
extern void jumpif ();
extern void do_jump ();

extern rtx assemble_static_space ();

extern void locate_and_pad_parm ();

extern rtx expand_inline_function ();

/* Hook called by expand_expr for language-specific tree codes.
   It is up to the language front end to install a hook
   if it has any such codes that expand_expr needs to know about.  */
extern rtx (*lang_expand_expr) ();