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Ensure flowvars always point to the var itself.

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Pointing to aliases of the var causes all sorts of problems, but this time
it was causing the uninitialized variable detector to miss certain
parameters.
This commit is contained in:
Bill Currie 2012-11-21 09:43:59 +09:00
parent 0dc306c4b7
commit 686937123c
1 changed files with 12 additions and 13 deletions
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25
tools/qfcc/source/flow.c
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@ -222,24 +222,21 @@ flowvar_is_param (flowvar_t *var)
flowvar_t *
flow_get_var (operand_t *op)
{
operand_t *o;
if (!op)
return 0;
o = op;
while (o->op_type == op_alias)
o = o->o.alias;
while (op->op_type == op_alias)
op = op->o.alias;
if (o->op_type == op_temp) {
if (!o->o.tempop.flowvar)
o->o.tempop.flowvar = new_flowvar ();
return o->o.tempop.flowvar;
if (op->op_type == op_temp) {
if (!op->o.tempop.flowvar)
op->o.tempop.flowvar = new_flowvar ();
return op->o.tempop.flowvar;
}
if (o->op_type == op_symbol && o->o.symbol->sy_type == sy_var) {
if (!o->o.symbol->flowvar)
o->o.symbol->flowvar = new_flowvar ();
return o->o.symbol->flowvar;
if (op->op_type == op_symbol && op->o.symbol->sy_type == sy_var) {
if (!op->o.symbol->flowvar)
op->o.symbol->flowvar = new_flowvar ();
return op->o.symbol->flowvar;
}
//FIXME functions? (some are variable) values?
return 0;
@ -280,6 +277,8 @@ add_operand (function_t *func, operand_t *op)
if (!op)
return;
while (op->op_type == op_alias)
op = op->o.alias;
if (op->op_type == op_label)
return;