/* C-compiler utilities for types and variables storage layout
Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1996, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of GCC.
/* ... and its original value in bytes, specified via -fpack-struct=<value>. */
unsigned int initial_max_fld_align = TARGET_DEFAULT_PACK_STRUCT;
-/* If nonzero, the alignment of a bitstring or (power-)set value, in bits.
- May be overridden by front-ends. */
-unsigned int set_alignment = 0;
-
/* Nonzero if all REFERENCE_TYPEs are internal and hence should be
allocated in Pmode, not ptr_mode. Set only by internal_reference_types
called only by a front end. */
}
else if (DECL_SIZE_UNIT (decl) == 0)
DECL_SIZE_UNIT (decl)
- = convert (sizetype, size_binop (CEIL_DIV_EXPR, DECL_SIZE (decl),
- bitsize_unit_node));
+ = fold_convert (sizetype, size_binop (CEIL_DIV_EXPR, DECL_SIZE (decl),
+ bitsize_unit_node));
if (code != FIELD_DECL)
/* For non-fields, update the alignment from the type. */
/* Hook for a front-end function that can modify the record layout as needed
immediately before it is finalized. */
-void (*lang_adjust_rli) (record_layout_info) = 0;
+static void (*lang_adjust_rli) (record_layout_info) = 0;
void
set_lang_adjust_rli (void (*f) (record_layout_info))
bit_from_pos (tree offset, tree bitpos)
{
return size_binop (PLUS_EXPR, bitpos,
- size_binop (MULT_EXPR, convert (bitsizetype, offset),
+ size_binop (MULT_EXPR,
+ fold_convert (bitsizetype, offset),
bitsize_unit_node));
}
byte_from_pos (tree offset, tree bitpos)
{
return size_binop (PLUS_EXPR, offset,
- convert (sizetype,
- size_binop (TRUNC_DIV_EXPR, bitpos,
- bitsize_unit_node)));
+ fold_convert (sizetype,
+ size_binop (TRUNC_DIV_EXPR, bitpos,
+ bitsize_unit_node)));
}
void
tree pos)
{
*poffset = size_binop (MULT_EXPR,
- convert (sizetype,
- size_binop (FLOOR_DIV_EXPR, pos,
- bitsize_int (off_align))),
+ fold_convert (sizetype,
+ size_binop (FLOOR_DIV_EXPR, pos,
+ bitsize_int (off_align))),
size_int (off_align / BITS_PER_UNIT));
*pbitpos = size_binop (FLOOR_MOD_EXPR, pos, bitsize_int (off_align));
}
*poffset
= size_binop (PLUS_EXPR, *poffset,
- size_binop (MULT_EXPR, convert (sizetype, extra_aligns),
+ size_binop (MULT_EXPR,
+ fold_convert (sizetype, extra_aligns),
size_int (off_align / BITS_PER_UNIT)));
*pbitpos
/* First adjust OFFSET by the partial bits, then align. */
rli->offset
= size_binop (PLUS_EXPR, rli->offset,
- convert (sizetype,
- size_binop (CEIL_DIV_EXPR, rli->bitpos,
- bitsize_unit_node)));
+ fold_convert (sizetype,
+ size_binop (CEIL_DIV_EXPR, rli->bitpos,
+ bitsize_unit_node)));
rli->bitpos = bitsize_zero_node;
rli->offset = round_up (rli->offset, desired_align / BITS_PER_UNIT);
{
rli->offset
= size_binop (PLUS_EXPR, rli->offset,
- convert (sizetype,
- size_binop (CEIL_DIV_EXPR, rli->bitpos,
- bitsize_unit_node)));
+ fold_convert (sizetype,
+ size_binop (CEIL_DIV_EXPR, rli->bitpos,
+ bitsize_unit_node)));
rli->offset
= size_binop (PLUS_EXPR, rli->offset, DECL_SIZE_UNIT (field));
rli->bitpos = bitsize_zero_node;
#endif /* MEMBER_TYPE_FORCES_BLK */
}
- /* If we only have one real field; use its mode. This only applies to
- RECORD_TYPE. This does not apply to unions. */
- if (TREE_CODE (type) == RECORD_TYPE && mode != VOIDmode)
+ TYPE_MODE (type) = mode_for_size_tree (TYPE_SIZE (type), MODE_INT, 1);
+
+ /* If we only have one real field; use its mode if that mode's size
+ matches the type's size. This only applies to RECORD_TYPE. This
+ does not apply to unions. */
+ if (TREE_CODE (type) == RECORD_TYPE && mode != VOIDmode
+ && GET_MODE_SIZE (mode) == GET_MODE_SIZE (TYPE_MODE (type)))
TYPE_MODE (type) = mode;
- else
- TYPE_MODE (type) = mode_for_size_tree (TYPE_SIZE (type), MODE_INT, 1);
/* If structure's known alignment is less than what the scalar
mode would need, and it matters, then stick with BLKmode. */
result will fit in sizetype. We will get more efficient code using
sizetype, so we force a conversion. */
TYPE_SIZE_UNIT (type)
- = convert (sizetype,
- size_binop (FLOOR_DIV_EXPR, TYPE_SIZE (type),
- bitsize_unit_node));
+ = fold_convert (sizetype,
+ size_binop (FLOOR_DIV_EXPR, TYPE_SIZE (type),
+ bitsize_unit_node));
if (TYPE_SIZE (type) != 0)
{
nunits_tree, 0);
TYPE_SIZE (type) = int_const_binop (MULT_EXPR, TYPE_SIZE (innertype),
nunits_tree, 0);
+
+ /* Always naturally align vectors. This prevents ABI changes
+ depending on whether or not native vector modes are supported. */
+ TYPE_ALIGN (type) = tree_low_cst (TYPE_SIZE (type), 0);
break;
}
/* The initial subtraction should happen in the original type so
that (possible) negative values are handled appropriately. */
length = size_binop (PLUS_EXPR, size_one_node,
- convert (sizetype,
- fold (build2 (MINUS_EXPR,
- TREE_TYPE (lb),
- ub, lb))));
+ fold_convert (sizetype,
+ fold (build2 (MINUS_EXPR,
+ TREE_TYPE (lb),
+ ub, lb))));
/* Special handling for arrays of bits (for Chill). */
element_size = TYPE_SIZE (element);
length = size_binop (MAX_EXPR, length, size_zero_node);
TYPE_SIZE (type) = size_binop (MULT_EXPR, element_size,
- convert (bitsizetype, length));
+ fold_convert (bitsizetype,
+ length));
/* If we know the size of the element, calculate the total
size directly, rather than do some division thing below.
}
break;
- case SET_TYPE: /* Used by Chill and Pascal. */
- {
- unsigned int alignment;
- HOST_WIDE_INT size_in_bits;
- HOST_WIDE_INT rounded_size;
-
- gcc_assert (TREE_CODE (TYPE_MAX_VALUE (TYPE_DOMAIN (type)))
- == INTEGER_CST);
- gcc_assert (TREE_CODE (TYPE_MIN_VALUE (TYPE_DOMAIN (type)))
- == INTEGER_CST);
-
-#ifndef SET_WORD_SIZE
-#define SET_WORD_SIZE BITS_PER_WORD
-#endif
- alignment = set_alignment ? set_alignment : SET_WORD_SIZE;
- size_in_bits
- = (tree_low_cst (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0)
- - tree_low_cst (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) + 1);
- rounded_size
- = ((size_in_bits + alignment - 1) / alignment) * alignment;
-
- if (rounded_size > (int) alignment)
- TYPE_MODE (type) = BLKmode;
- else
- TYPE_MODE (type) = mode_for_size (alignment, MODE_INT, 1);
-
- TYPE_SIZE (type) = bitsize_int (rounded_size);
- TYPE_SIZE_UNIT (type) = size_int (rounded_size / BITS_PER_UNIT);
- TYPE_ALIGN (type) = alignment;
- TYPE_USER_ALIGN (type) = 0;
- TYPE_PRECISION (type) = size_in_bits;
- }
- break;
-
case FILE_TYPE:
/* The size may vary in different languages, so the language front end
should fill in the size. */
max_val = ((unsigned HOST_WIDE_INT) 1 << (size - 1) << 1) - 1;
}
- *mmin = GEN_INT (trunc_int_for_mode (min_val, target_mode));
- *mmax = GEN_INT (trunc_int_for_mode (max_val, target_mode));
+ *mmin = gen_int_mode (min_val, target_mode);
+ *mmax = gen_int_mode (max_val, target_mode);
}
#include "gt-stor-layout.h"
OSDN Git Service
