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(expand_expr...

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(expand_expr, case CONSTRUCTOR): If constant and large enough for
memcpy to be used, build constructor into static memory.

From-SVN: r7365
This commit is contained in:
Richard Kenner 1994-05-27 14:56:31 -04:00
parent d0c84fdaa3
commit d720b9d197
1 changed files with 8 additions and 2 deletions
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10
gcc/expr.c
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@ -4102,12 +4102,18 @@ expand_expr (exp, target, tmode, modifier)
if this is a non-BLKmode mode, let it store a field at a time
since that should make a CONST_INT or CONST_DOUBLE when we
fold. Likewise, if we have a target we can use, it is best to
store directly into the target. If we are making an initializer and
store directly into the target unless the type is large enough
that memcpy will be used. If we are making an initializer and
all operands are constant, put it in memory as well. */
else if ((TREE_STATIC (exp)
&& ((mode == BLKmode
&& ! (target != 0 && safe_from_p (target, exp)))
|| TREE_ADDRESSABLE (exp)))
|| TREE_ADDRESSABLE (exp)
|| (TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST
&& (move_by_pieces_ninsns
(TREE_INT_CST_LOW (TYPE_SIZE (type)),
TYPE_ALIGN (type))
> MOVE_RATIO))))
|| (modifier == EXPAND_INITIALIZER && TREE_CONSTANT (exp)))
{
rtx constructor = output_constant_def (exp);