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(store_constructor): Handle TREE_PURPOSE of array constructor. 

(expand_expr, ARRAY_REF case): Likewise.

From-SVN: r5315
This commit is contained in:
Richard Stallman 1993-09-13 20:16:51 +00:00
parent 3181cbfdd5
commit 03dc44a614
1 changed files with 31 additions and 8 deletions
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39
gcc/expr.c
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@ -2720,19 +2720,41 @@ store_constructor (exp, target)
int bitsize;
int bitpos;
int unsignedp;
tree index = TREE_PURPOSE (elt);
rtx xtarget = target;
mode = TYPE_MODE (elttype);
bitsize = GET_MODE_BITSIZE (mode);
unsignedp = TREE_UNSIGNED (elttype);
bitpos = (i * TREE_INT_CST_LOW (TYPE_SIZE (elttype)));
if (index != 0 && TREE_CODE (index) != INTEGER_CST)
{
/* We don't currently allow variable indices in a
C initializer, but let's try here to support them. */
rtx pos_rtx, addr, xtarget;
tree position;
store_field (target, bitsize, bitpos, mode, TREE_VALUE (elt),
/* The alignment of TARGET is
at least what its type requires. */
VOIDmode, 0,
TYPE_ALIGN (type) / BITS_PER_UNIT,
int_size_in_bytes (type));
position = size_binop (MULT_EXPR, index, TYPE_SIZE (elttype));
pos_rtx = expand_expr (position, 0, VOIDmode, 0);
addr = gen_rtx (PLUS, Pmode, XEXP (target, 0), pos_rtx);
xtarget = change_address (target, mode, addr);
store_expr (TREE_VALUE (elt), xtarget, 0);
}
else
{
if (index != 0)
bitpos = (TREE_INT_CST_LOW (index)
* TREE_INT_CST_LOW (TYPE_SIZE (elttype)));
else
bitpos = (i * TREE_INT_CST_LOW (TYPE_SIZE (elttype)));
store_field (xtarget, bitsize, bitpos, mode, TREE_VALUE (elt),
/* The alignment of TARGET is
at least what its type requires. */
VOIDmode, 0,
TYPE_ALIGN (type) / BITS_PER_UNIT,
int_size_in_bytes (type));
}
}
}
@ -4013,7 +4035,8 @@ expand_expr (exp, target, tmode, modifier)
{
tree elem = CONSTRUCTOR_ELTS (init);
while (elem && i--)
while (elem
&& !tree_int_cst_equal (TREE_PURPOSE (elem), index))
elem = TREE_CHAIN (elem);
if (elem)
return expand_expr (fold (TREE_VALUE (elem)), target,