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Nuke dag_set_live_vars.

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It is no longer needed thanks to the exit dummy node used for making
globals live.
This commit is contained in:
Bill Currie 2012-12-20 20:57:11 +09:00
parent cc0373cdca
commit 453dacb356
1 changed files with 0 additions and 27 deletions
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27
tools/qfcc/source/dags.c
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@ -553,31 +553,6 @@ dag_make_var_live (set_t *live_vars, operand_t *op)
set_add (live_vars, var->number);
}
static void
dag_set_live_vars (set_t *live_vars, dag_t *dag, dagnode_t *n)
{
if (!strncmp (n->label->opcode, "<CALL", 5)
|| !strncmp (n->label->opcode, "<RCALL", 6)) {
int start, end;
if (!strncmp (n->label->opcode, "<CALL", 5)) {
start = 0;
end = 0;
if (n->label->opcode[5] != '>')
end = n->label->opcode[5] - '0';
} else {
start = 2;
end = n->label->opcode[6] - '0';
}
while (start < end) {
set_add (live_vars, start + 1);
start++;
}
} else if (!strncmp (n->label->opcode, "<RETURN", 7)) {
set_union (live_vars, dag->flownode->global_vars);
}
}
static void
dag_kill_nodes (dag_t *dag, dagnode_t *n)
{
@ -658,8 +633,6 @@ dag_create (flownode_t *flownode)
lx->expr = s->expr;
dagnode_attach_label (n, lx);
}
if (n->type == st_func)
dag_set_live_vars (live_vars, dag, n);
if (n->type == st_ptrassign)
dag_kill_nodes (dag, n);
}