322 lines
12 KiB
C
322 lines
12 KiB
C
/* Virtual array support.
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Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
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Contributed by Cygnus Solutions.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#ifndef GCC_VARRAY_H
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#define GCC_VARRAY_H
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#ifndef HOST_WIDE_INT
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#include "machmode.h"
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#endif
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#ifndef GCC_SYSTEM_H
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#include "system.h"
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#endif
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/* Auxiliary structure used inside the varray structure, used for
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function integration data. */
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struct const_equiv_data GTY(()) {
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/* Map pseudo reg number in calling function to equivalent constant. We
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cannot in general substitute constants into parameter pseudo registers,
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since some machine descriptions (many RISCs) won't always handle
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the resulting insns. So if an incoming parameter has a constant
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equivalent, we record it here, and if the resulting insn is
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recognizable, we go with it.
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We also use this mechanism to convert references to incoming arguments
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and stacked variables. copy_rtx_and_substitute will replace the virtual
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incoming argument and virtual stacked variables registers with new
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pseudos that contain pointers into the replacement area allocated for
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this inline instance. These pseudos are then marked as being equivalent
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to the appropriate address and substituted if valid. */
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struct rtx_def *rtx;
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/* Record the valid age for each entry. The entry is invalid if its
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age is less than const_age. */
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unsigned age;
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};
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/* Enum indicating what the varray contains.
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If this is changed, `element_size' in varray.c needs to be updated. */
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enum varray_data_enum {
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VARRAY_DATA_C,
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VARRAY_DATA_UC,
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VARRAY_DATA_S,
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VARRAY_DATA_US,
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VARRAY_DATA_I,
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VARRAY_DATA_U,
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VARRAY_DATA_L,
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VARRAY_DATA_UL,
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VARRAY_DATA_HINT,
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VARRAY_DATA_UHINT,
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VARRAY_DATA_GENERIC,
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VARRAY_DATA_CPTR,
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VARRAY_DATA_RTX,
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VARRAY_DATA_RTVEC,
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VARRAY_DATA_TREE,
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VARRAY_DATA_BITMAP,
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VARRAY_DATA_REG,
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VARRAY_DATA_CONST_EQUIV,
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VARRAY_DATA_BB,
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VARRAY_DATA_TE,
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NUM_VARRAY_DATA
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};
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/* Union of various array types that are used. */
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typedef union varray_data_tag GTY (()) {
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char GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_C"))) c[1];
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unsigned char GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_UC"))) uc[1];
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short GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_S"))) s[1];
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unsigned short GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_US"))) us[1];
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int GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_I"))) i[1];
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unsigned int GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_U"))) u[1];
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long GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_L"))) l[1];
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unsigned long GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_UL"))) ul[1];
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HOST_WIDE_INT GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_HINT"))) hint[1];
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unsigned HOST_WIDE_INT GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_UHINT"))) uhint[1];
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PTR GTY ((length ("%0.num_elements"), use_param (""),
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tag ("VARRAY_DATA_GENERIC"))) generic[1];
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char *GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_CPTR"))) cptr[1];
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struct rtx_def *GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_RTX"))) rtx[1];
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struct rtvec_def *GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_RTVEC"))) rtvec[1];
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union tree_node *GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_TREE"))) tree[1];
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struct bitmap_head_def *GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_BITMAP"))) bitmap[1];
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struct reg_info_def *GTY ((length ("%0.num_elements"), skip (""),
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tag ("VARRAY_DATA_REG"))) reg[1];
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struct const_equiv_data GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_CONST_EQUIV"))) const_equiv[1];
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struct basic_block_def *GTY ((length ("%0.num_elements"), skip (""),
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tag ("VARRAY_DATA_BB"))) bb[1];
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struct elt_list *GTY ((length ("%0.num_elements"),
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tag ("VARRAY_DATA_TE"))) te[1];
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} varray_data;
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/* Virtual array of pointers header. */
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struct varray_head_tag GTY(()) {
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size_t num_elements; /* Maximum element number allocated. */
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size_t elements_used; /* The number of elements used, if
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using VARRAY_PUSH/VARRAY_POP. */
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enum varray_data_enum type; /* The kind of elements in the varray. */
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const char *name; /* name of the varray for reporting errors */
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varray_data GTY ((desc ("%0.type"))) data; /* The data elements follow,
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must be last. */
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};
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typedef struct varray_head_tag *varray_type;
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/* Allocate a virtual array with NUM elements, each of which is SIZE bytes
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long, named NAME. Array elements are zeroed. */
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extern varray_type varray_init PARAMS ((size_t, enum varray_data_enum,
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const char *));
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#define VARRAY_CHAR_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_C, name)
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#define VARRAY_UCHAR_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_UC, name)
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#define VARRAY_SHORT_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_S, name)
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#define VARRAY_USHORT_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_US, name)
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#define VARRAY_INT_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_I, name)
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#define VARRAY_UINT_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_U, name)
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#define VARRAY_LONG_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_L, name)
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#define VARRAY_ULONG_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_UL, name)
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#define VARRAY_WIDE_INT_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_HINT, name)
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#define VARRAY_UWIDE_INT_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_UHINT, name)
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#define VARRAY_GENERIC_PTR_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_GENERIC, name)
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#define VARRAY_CHAR_PTR_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_CPTR, name)
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#define VARRAY_RTX_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_RTX, name)
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#define VARRAY_RTVEC_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_RTVEC, name)
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#define VARRAY_TREE_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_TREE, name)
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#define VARRAY_BITMAP_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_BITMAP, name)
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#define VARRAY_REG_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_REG, name)
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#define VARRAY_CONST_EQUIV_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_CONST_EQUIV, name)
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#define VARRAY_BB_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_BB, name)
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#define VARRAY_ELT_LIST_INIT(va, num, name) \
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va = varray_init (num, VARRAY_DATA_TE, name)
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/* Free up memory allocated by the virtual array, but do not free any of the
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elements involved. */
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#define VARRAY_FREE(vp) \
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do { if (vp) { free (vp); vp = (varray_type) 0; } } while (0)
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/* Grow/shrink the virtual array VA to N elements. */
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extern varray_type varray_grow PARAMS ((varray_type, size_t));
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#define VARRAY_GROW(VA, N) ((VA) = varray_grow (VA, N))
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#define VARRAY_SIZE(VA) ((VA)->num_elements)
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#define VARRAY_ACTIVE_SIZE(VA) ((VA)->elements_used)
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#define VARRAY_POP_ALL(VA) ((VA)->elements_used = 0)
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#define VARRAY_CLEAR(VA) varray_clear(VA)
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extern void varray_clear PARAMS ((varray_type));
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/* Check for VARRAY_xxx macros being in bound. */
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#if defined ENABLE_CHECKING && (GCC_VERSION >= 2007)
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extern void varray_check_failed PARAMS ((varray_type, size_t,
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const char *, int,
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const char *)) ATTRIBUTE_NORETURN;
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#define VARRAY_CHECK(VA, N, T) __extension__ \
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(*({ varray_type const _va = (VA); \
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const size_t _n = (N); \
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if (_n >= _va->num_elements) \
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varray_check_failed (_va, _n, __FILE__, __LINE__, __FUNCTION__); \
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&_va->data.T[_n]; }))
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#else
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#define VARRAY_CHECK(VA, N, T) ((VA)->data.T[N])
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#endif
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/* Push X onto VA. T is the name of the field in varray_data
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corresponding to the type of X. */
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#define VARRAY_PUSH(VA, T, X) \
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do \
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{ \
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if ((VA)->elements_used >= (VA)->num_elements) \
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VARRAY_GROW ((VA), 2 * (VA)->num_elements); \
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(VA)->data.T[(VA)->elements_used++] = (X); \
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} \
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while (0)
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/* Pop the top element of VA. */
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#define VARRAY_POP(VA) \
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((VA)->elements_used--)
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/* Return the top element of VA. */
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#define VARRAY_TOP(VA, T) \
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((VA)->data.T[(VA)->elements_used - 1])
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#define VARRAY_CHAR(VA, N) VARRAY_CHECK (VA, N, c)
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#define VARRAY_UCHAR(VA, N) VARRAY_CHECK (VA, N, uc)
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#define VARRAY_SHORT(VA, N) VARRAY_CHECK (VA, N, s)
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#define VARRAY_USHORT(VA, N) VARRAY_CHECK (VA, N, us)
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#define VARRAY_INT(VA, N) VARRAY_CHECK (VA, N, i)
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#define VARRAY_UINT(VA, N) VARRAY_CHECK (VA, N, u)
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#define VARRAY_LONG(VA, N) VARRAY_CHECK (VA, N, l)
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#define VARRAY_ULONG(VA, N) VARRAY_CHECK (VA, N, ul)
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#define VARRAY_WIDE_INT(VA, N) VARRAY_CHECK (VA, N, hint)
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#define VARRAY_UWIDE_INT(VA, N) VARRAY_CHECK (VA, N, uhint)
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#define VARRAY_GENERIC_PTR(VA,N) VARRAY_CHECK (VA, N, generic)
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#define VARRAY_CHAR_PTR(VA,N) VARRAY_CHECK (VA, N, cptr)
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#define VARRAY_RTX(VA, N) VARRAY_CHECK (VA, N, rtx)
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#define VARRAY_RTVEC(VA, N) VARRAY_CHECK (VA, N, rtvec)
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#define VARRAY_TREE(VA, N) VARRAY_CHECK (VA, N, tree)
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#define VARRAY_BITMAP(VA, N) VARRAY_CHECK (VA, N, bitmap)
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#define VARRAY_REG(VA, N) VARRAY_CHECK (VA, N, reg)
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#define VARRAY_CONST_EQUIV(VA, N) VARRAY_CHECK (VA, N, const_equiv)
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#define VARRAY_BB(VA, N) VARRAY_CHECK (VA, N, bb)
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#define VARRAY_ELT_LIST(VA, N) VARRAY_CHECK (VA, N, te)
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/* Push a new element on the end of VA, extending it if necessary. */
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#define VARRAY_PUSH_CHAR(VA, X) VARRAY_PUSH (VA, c, X)
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#define VARRAY_PUSH_UCHAR(VA, X) VARRAY_PUSH (VA, uc, X)
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#define VARRAY_PUSH_SHORT(VA, X) VARRAY_PUSH (VA, s, X)
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#define VARRAY_PUSH_USHORT(VA, X) VARRAY_PUSH (VA, us, X)
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#define VARRAY_PUSH_INT(VA, X) VARRAY_PUSH (VA, i, X)
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#define VARRAY_PUSH_UINT(VA, X) VARRAY_PUSH (VA, u, X)
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#define VARRAY_PUSH_LONG(VA, X) VARRAY_PUSH (VA, l, X)
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#define VARRAY_PUSH_ULONG(VA, X) VARRAY_PUSH (VA, ul, X)
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#define VARRAY_PUSH_WIDE_INT(VA, X) VARRAY_PUSH (VA, hint, X)
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#define VARRAY_PUSH_UWIDE_INT(VA, X) VARRAY_PUSH (VA, uhint, X)
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#define VARRAY_PUSH_GENERIC_PTR(VA, X) VARRAY_PUSH (VA, generic, X)
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#define VARRAY_PUSH_CHAR_PTR(VA, X) VARRAY_PUSH (VA, cptr, X)
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#define VARRAY_PUSH_RTX(VA, X) VARRAY_PUSH (VA, rtx, X)
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#define VARRAY_PUSH_RTVEC(VA, X) VARRAY_PUSH (VA, rtvec, X)
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#define VARRAY_PUSH_TREE(VA, X) VARRAY_PUSH (VA, tree, X)
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#define VARRAY_PUSH_BITMAP(VA, X) VARRAY_PUSH (VA, bitmap, X)
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#define VARRAY_PUSH_REG(VA, X) VARRAY_PUSH (VA, reg, X)
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#define VARRAY_PUSH_CONST_EQUIV(VA, X) VARRAY_PUSH (VA, const_equiv, X)
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#define VARRAY_PUSH_BB(VA, X) VARRAY_PUSH (VA, bb, X)
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/* Return the last element of VA. */
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#define VARRAY_TOP_CHAR(VA) VARRAY_TOP (VA, c)
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#define VARRAY_TOP_UCHAR(VA) VARRAY_TOP (VA, uc)
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#define VARRAY_TOP_SHORT(VA) VARRAY_TOP (VA, s)
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#define VARRAY_TOP_USHORT(VA) VARRAY_TOP (VA, us)
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#define VARRAY_TOP_INT(VA) VARRAY_TOP (VA, i)
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#define VARRAY_TOP_UINT(VA) VARRAY_TOP (VA, u)
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#define VARRAY_TOP_LONG(VA) VARRAY_TOP (VA, l)
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#define VARRAY_TOP_ULONG(VA) VARRAY_TOP (VA, ul)
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#define VARRAY_TOP_WIDE_INT(VA) VARRAY_TOP (VA, hint)
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#define VARRAY_TOP_UWIDE_INT(VA) VARRAY_TOP (VA, uhint)
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#define VARRAY_TOP_GENERIC_PTR(VA) VARRAY_TOP (VA, generic)
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#define VARRAY_TOP_CHAR_PTR(VA) VARRAY_TOP (VA, cptr)
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#define VARRAY_TOP_RTX(VA) VARRAY_TOP (VA, rtx)
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#define VARRAY_TOP_RTVEC(VA) VARRAY_TOP (VA, rtvec)
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#define VARRAY_TOP_TREE(VA) VARRAY_TOP (VA, tree)
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#define VARRAY_TOP_BITMAP(VA) VARRAY_TOP (VA, bitmap)
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#define VARRAY_TOP_REG(VA) VARRAY_TOP (VA, reg)
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#define VARRAY_TOP_CONST_EQUIV(VA) VARRAY_TOP (VA, const_equiv)
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#define VARRAY_TOP_BB(VA) VARRAY_TOP (VA, bb)
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#endif /* ! GCC_VARRAY_H */
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