/* Function integration definitions for GCC
- Copyright (C) 1990, 1995, 1998, 1999, 2000, 2001, 2003
- Free Software Foundation, Inc.
+ Copyright (C) 1990, 1995, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+ 2007, 2008 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 2, or (at your option) any later
+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
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
-#include "varray.h"
-
-/* This structure is used to remap objects in the function being inlined to
- those belonging to the calling function. It is passed by
- expand_inline_function to its children.
-
- This structure is also used when unrolling loops and otherwise
- replicating code, although not all fields are needed in this case;
- only those fields needed by copy_rtx_and_substitute() and its children
- are used.
-
- This structure is used instead of static variables because
- expand_inline_function may be called recursively via expand_expr. */
-
-struct inline_remap
-{
- /* True if we are doing function integration, false otherwise.
- Used to control whether RTX_UNCHANGING bits are copied by
- copy_rtx_and_substitute. */
- int integrating;
- /* Definition of function be inlined. */
- tree fndecl;
- /* Place to put insns needed at start of function. */
- rtx insns_at_start;
- /* Mapping from old BLOCKs to new BLOCKs. */
- varray_type block_map;
- /* Mapping from old registers to new registers.
- It is allocated and deallocated in `expand_inline_function' */
- rtx *reg_map;
-#if defined (LEAF_REGISTERS) && defined (LEAF_REG_REMAP)
- /* Mapping from old leaf registers to new leaf registers. */
- rtx leaf_reg_map[FIRST_PSEUDO_REGISTER][NUM_MACHINE_MODES];
-#endif
- /* Mapping from old code-labels to new code-labels.
- The first element of this map is label_map[min_labelno]. */
- rtx *label_map;
- /* Mapping from old insn uid's to copied insns. The first element
- of this map is insn_map[min_insnno]; the last element is
- insn_map[max_insnno]. We keep the bounds here for when the map
- only covers a partial range of insns (such as loop unrolling or
- code replication). */
- rtx *insn_map;
- int min_insnno, max_insnno;
-
- /* Map pseudo reg number in calling function to equivalent constant. We
- cannot in general substitute constants into parameter pseudo registers,
- since some machine descriptions (many RISCs) won't always handle
- the resulting insns. So if an incoming parameter has a constant
- equivalent, we record it here, and if the resulting insn is
- recognizable, we go with it.
-
- We also use this mechanism to convert references to incoming arguments
- and stacked variables. copy_rtx_and_substitute will replace the virtual
- incoming argument and virtual stacked variables registers with new
- pseudos that contain pointers into the replacement area allocated for
- this inline instance. These pseudos are then marked as being equivalent
- to the appropriate address and substituted if valid. */
- varray_type const_equiv_varray;
- /* This is incremented for each new basic block.
- It is used to store in the age field to record the domain of validity
- of each entry in const_equiv_varray.
- A value of -1 indicates an entry for a reg which is a parm.
- All other values are "positive". */
-#define CONST_AGE_PARM (-1)
- unsigned int const_age;
-
- /* Target of the inline function being expanded, or NULL if none. */
- rtx inline_target;
- /* When an insn is being copied by copy_rtx_and_substitute,
- this is nonzero if we have copied an ASM_OPERANDS.
- In that case, it is the original input-operand vector. */
- rtvec orig_asm_operands_vector;
- /* When an insn is being copied by copy_rtx_and_substitute,
- this is nonzero if we have copied an ASM_OPERANDS.
- In that case, it is the copied input-operand vector. */
- rtvec copy_asm_operands_vector;
- /* Likewise, this is the copied constraints vector. */
- rtvec copy_asm_constraints_vector;
-
- /* Target of a return insn, if needed and inlining. */
- rtx local_return_label;
-
- /* Indications for regs being pointers and their alignment. */
- unsigned char *regno_pointer_align;
- rtx *x_regno_reg_rtx;
-
- /* The next few fields are used for subst_constants to record the SETs
- that it saw. */
- int num_sets;
- struct equiv_table
- {
- rtx dest;
- rtx equiv;
- } equiv_sets[MAX_RECOG_OPERANDS];
- /* Record the last thing assigned to pc. This is used for folded
- conditional branch insns. */
- rtx last_pc_value;
-#ifdef HAVE_cc0
- /* Record the last thing assigned to cc0. */
- rtx last_cc0_value;
-#endif
- /* Note mode of COMPARE if the mode would be otherwise lost (comparing of
- two VOIDmode constants. */
- rtx compare_src;
- enum machine_mode compare_mode;
-};
-
-/* Return a copy of an rtx (as needed), substituting pseudo-register,
- labels, and frame-pointer offsets as necessary. */
-extern rtx copy_rtx_and_substitute (rtx, struct inline_remap *, int);
-
-/* Return a pseudo that corresponds to the value in the specified hard
- reg as of the start of the function (for inlined functions, the
- value at the start of the parent function). */
-extern rtx get_hard_reg_initial_val (enum machine_mode, int);
-/* Likewise, but for a different than the current function, or
- arbitrary expression. */
-extern rtx get_func_hard_reg_initial_val (struct function *, rtx);
-/* Likewise, but iff someone else has caused it to become allocated. */
-extern rtx has_func_hard_reg_initial_val (struct function *, rtx);
-/* Likewise, but for common cases. */
-extern rtx has_hard_reg_initial_val (enum machine_mode, int);
+extern rtx get_hard_reg_initial_val (enum machine_mode, unsigned int);
+extern rtx has_hard_reg_initial_val (enum machine_mode, unsigned int);
/* If a pseudo represents an initial hard reg (or expression), return
it, else return NULL_RTX. */
-extern rtx get_hard_reg_initial_reg (struct function *, rtx);
+extern rtx get_hard_reg_initial_reg (rtx);
/* Called from rest_of_compilation. */
-extern void emit_initial_value_sets (void);
+extern unsigned int emit_initial_value_sets (void);
extern void allocate_initial_values (rtx *);
-/* Copy a declaration when one function is substituted inline into
- another. */
-extern tree copy_decl_for_inlining (tree, tree, tree);
-
/* Check whether there's any attribute in a function declaration that
makes the function uninlinable. Returns false if it finds any,
true otherwise. */
-extern bool function_attribute_inlinable_p (tree);
-
-extern void try_constants (rtx, struct inline_remap *);
-
-/* Return the label indicated. */
-extern rtx get_label_from_map (struct inline_remap *, int);
-
-/* Set the label indicated. */
-#define set_label_in_map(MAP, I, X) ((MAP)->label_map[I] = (X))
-
-/* Unfortunately, we need a global copy of const_equiv varray for
- communication with a function called from note_stores. Be *very*
- careful that this is used properly in the presence of recursion. */
-
-extern varray_type global_const_equiv_varray;
-
-#define MAYBE_EXTEND_CONST_EQUIV_VARRAY(MAP,MAX) \
- { \
- if ((size_t)(MAX) >= VARRAY_SIZE ((MAP)->const_equiv_varray)) \
- { \
- int is_global = (global_const_equiv_varray \
- == (MAP)->const_equiv_varray); \
- VARRAY_GROW ((MAP)->const_equiv_varray, (MAX)+1); \
- if (is_global) \
- global_const_equiv_varray = (MAP)->const_equiv_varray; \
- } \
- }
+extern bool function_attribute_inlinable_p (const_tree);
-#define SET_CONST_EQUIV_DATA(MAP,REG,RTX,AGE) \
- { \
- struct const_equiv_data *p; \
- MAYBE_EXTEND_CONST_EQUIV_VARRAY ((MAP), REGNO (REG)); \
- p = &VARRAY_CONST_EQUIV ((MAP)->const_equiv_varray, REGNO (REG)); \
- p->rtx = (RTX); \
- p->age = (AGE); \
- }
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