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Allow node() to work for all operand types.

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This is a bit of an expermiment to get better dags (more node reuse).
This commit is contained in:
Bill Currie 2012-11-20 14:23:43 +09:00
parent 1472fec7f2
commit f83cf1748f
1 changed files with 16 additions and 5 deletions
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21
tools/qfcc/source/dags.c
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@ -207,6 +207,7 @@ static dagnode_t *
node (operand_t *op) node (operand_t *op)
{ {
symbol_t *sym; symbol_t *sym;
dagnode_t *node = 0;
if (!op) if (!op)
return 0; return 0;
@ -214,15 +215,21 @@ node (operand_t *op)
op = op->o.alias; op = op->o.alias;
if (op->op_type == op_symbol) { if (op->op_type == op_symbol) {
sym = op->o.symbol; sym = op->o.symbol;
if (sym->sy_type == sy_const) //if (sym->sy_type == sy_const)
return 0; // return 0;
if (sym->daglabel) if (sym->daglabel)
return sym->daglabel->dagnode; node = sym->daglabel->dagnode;
} else if (op->op_type == op_temp) { } else if (op->op_type == op_temp) {
if (op->o.tempop.daglabel) if (op->o.tempop.daglabel)
return op->o.tempop.daglabel->dagnode; node = op->o.tempop.daglabel->dagnode;
} else if (op->op_type == op_value || op->op_type == op_pointer) {
if (op->o.value->daglabel)
node = op->o.value->daglabel->dagnode;
} else if (op->op_type == op_label) {
if (op->o.label->daglabel)
node = op->o.label->daglabel->dagnode;
} }
return 0; return node;
} }
static int static int
@ -248,6 +255,10 @@ op_is_identifer (operand_t *op)
{ {
while (op->op_type == op_alias) while (op->op_type == op_alias)
op = op->o.alias; op = op->o.alias;
if (op->op_type == op_label)
return 0;
if (op->op_type == op_value)
return 0;
if (op->op_type == op_pointer) if (op->op_type == op_pointer)
return 1; return 1;
if (op->op_type == op_temp) if (op->op_type == op_temp)