rtx
shallow_copy_rtx_stat (const_rtx orig MEM_STAT_DECL)
{
const unsigned int size = rtx_size (orig);
rtx const copy = ggc_alloc_rtx_def_stat (size PASS_MEM_STAT);
return (rtx) memcpy (copy, orig, size);
}
rtx
shallow_copy_rtx (const_rtx orig MEM_STAT_DECL)
{
const unsigned int size = rtx_size (orig);
rtx const copy = ggc_alloc_rtx_def_stat (size PASS_MEM_STAT);
memcpy (copy, orig, size);
switch (GET_CODE (orig))
{
/* RTX codes copy_rtx_if_shared_1 considers are shareable,
the used flag is often used for other purposes. */
case REG:
case DEBUG_EXPR:
case VALUE:
CASE_CONST_ANY:
case SYMBOL_REF:
case CODE_LABEL:
case PC:
case CC0:
case RETURN:
case SIMPLE_RETURN:
case SCRATCH:
break;
default:
/* For all other RTXes clear the used flag on the copy. */
RTX_FLAG (copy, used) = 0;
break;
}
return copy;
}
rtx
rtx_alloc_stat_v (RTX_CODE code MEM_STAT_DECL, int extra)
{
rtx rt = ggc_alloc_rtx_def_stat (RTX_CODE_SIZE (code) + extra
PASS_MEM_STAT);
/* We want to clear everything up to the FLD array. Normally, this
is one int, but we don't want to assume that and it isn't very
portable anyway; this is. */
memset (rt, 0, RTX_HDR_SIZE);
PUT_CODE (rt, code);
if (GATHER_STATISTICS)
{
rtx_alloc_counts[code]++;
rtx_alloc_sizes[code] += RTX_CODE_SIZE (code);
}
return rt;
}
