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Use copy_triple only on non-flattened nodes. 

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5212 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Patrick Georgi 2010-03-15 10:32:59 +00:00
parent 3b8d6a866d
commit 8f4546f7ca
1 changed files with 8 additions and 5 deletions
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13
util/romcc/romcc.c
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@ -11557,7 +11557,7 @@ static struct triple *constant_expr(struct compile_state *state)
static struct triple *assignment_expr(struct compile_state *state)
{
struct triple *def, *left, *right;
struct triple *def, *left, *left2, *right;
int tok, op, sign;
/* The C grammer in K&R shows assignment expressions
* only taking unary expressions as input on their
@ -11578,6 +11578,9 @@ static struct triple *assignment_expr(struct compile_state *state)
*/
def = conditional_expr(state);
left = def;
left2 = left;
if (!(left2->id & TRIPLE_FLAG_FLATTENED))
left2 = copy_triple(state, left2);
switch((tok = peek(state))) {
case TOK_EQ:
lvalue(state, left);
@ -11603,19 +11606,19 @@ static struct triple *assignment_expr(struct compile_state *state)
}
def = write_expr(state, left,
triple(state, op, left->type,
read_expr(state, copy_triple(state, left)), right));
read_expr(state, left2), right));
break;
case TOK_PLUSEQ:
lvalue(state, left);
eat(state, TOK_PLUSEQ);
def = write_expr(state, left,
mk_add_expr(state, copy_triple(state, left), assignment_expr(state)));
mk_add_expr(state, left2, assignment_expr(state)));
break;
case TOK_MINUSEQ:
lvalue(state, left);
eat(state, TOK_MINUSEQ);
def = write_expr(state, left,
mk_sub_expr(state, copy_triple(state, left), assignment_expr(state)));
mk_sub_expr(state, left2, assignment_expr(state)));
break;
case TOK_SLEQ:
case TOK_SREQ:
@ -11639,7 +11642,7 @@ static struct triple *assignment_expr(struct compile_state *state)
}
def = write_expr(state, left,
triple(state, op, left->type,
read_expr(state, copy_triple(state,left)), right));
read_expr(state, left2), right));
break;
}
return def;