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From-SVN: r1355
This commit is contained in:
Richard Stallman 1992-06-30 03:10:06 +00:00
parent f3ee8ad133
commit d4c40650c2
1 changed files with 10 additions and 1 deletions
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11
gcc/stor-layout.c
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@ -40,6 +40,10 @@ tree size_zero_node;
tree size_one_node;
/* If nonzero, this is an upper limit on alignment of structure fields.
The value is measured in bits. */
int maximum_field_alignment;
#define GET_MODE_ALIGNMENT(MODE) \
MIN (BIGGEST_ALIGNMENT, \
MAX (1, (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT)))
@ -198,7 +202,12 @@ layout_decl (decl, known_align)
/* Conditions are: a fixed size that is correct for another mode
and occupying a complete byte or bytes on proper boundary. */
if (code == FIELD_DECL)
DECL_BIT_FIELD_TYPE (decl) = DECL_BIT_FIELD (decl) ? type : 0;
{
DECL_BIT_FIELD_TYPE (decl) = DECL_BIT_FIELD (decl) ? type : 0;
if (maximum_field_alignment != 0)
DECL_ALIGN (decl) = MIN (DECL_ALIGN (decl), maximum_field_alignment);
}
if (DECL_BIT_FIELD (decl)
&& TYPE_SIZE (type) != 0
&& TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST)