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Support move statements (structure copy).

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This commit is contained in:
Bill Currie 2011-02-11 15:02:51 +09:00
parent e19f7e3521
commit 179c1f7058
1 changed files with 34 additions and 0 deletions
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34
tools/qfcc/source/statements.c
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@ -325,6 +325,34 @@ expr_assign (sblock_t *sblock, expr_t *e, operand_t **op)
return sblock;
}
static sblock_t *
expr_move (sblock_t *sblock, expr_t *e, operand_t **op)
{
statement_t *s;
type_t *type = e->e.expr.type;
expr_t *dst_expr = e->e.expr.e1;
expr_t *src_expr = e->e.expr.e2;
expr_t *size_expr;
operand_t *dst = 0;
operand_t *src = 0;
operand_t *size = 0;
if (!op)
op = &dst;
size_expr = new_short_expr (type_size (type));
sblock = statement_subexpr (sblock, dst_expr, op);
dst = *op;
sblock = statement_subexpr (sblock, src_expr, &src);
sblock = statement_subexpr (sblock, size_expr, &size);
s = new_statement ("<MOVE>", e);
s->opa = src;
s->opb = size;
s->opc = dst;
sblock_add_statement (sblock, s);
return sblock;
}
static sblock_t *
vector_call (sblock_t *sblock, expr_t *earg, expr_t *param, int ind,
operand_t **op)
@ -476,6 +504,9 @@ expr_expr (sblock_t *sblock, expr_t *e, operand_t **op)
case PAS:
sblock = expr_assign (sblock, e, op);
break;
case 'M':
sblock = expr_move (sblock, e, op);
break;
default:
opcode = convert_op (e->e.expr.op);
if (!opcode)
@ -777,6 +808,9 @@ statement_expr (sblock_t *sblock, expr_t *e)
case PAS:
sblock = expr_assign (sblock, e, 0);
break;
case 'M':
sblock = expr_move (sblock, e, 0);
break;
default:
if (e->e.expr.op < 256)
debug (e, "e %c", e->e.expr.op);