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Move the flow-var use/define calcs to a better place.

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dags.c really isn't the right place. The only reason it wasn't in flow.c in
the first place is find_operands was in the wrong place.
This commit is contained in:
Bill Currie 2012-11-06 20:20:28 +09:00
parent c4d4174ebc
commit 04a8e19481
2 changed files with 17 additions and 9 deletions
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9
tools/qfcc/source/dags.c
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@ -276,18 +276,9 @@ make_dag (const sblock_t *block)
operand_t *x = 0, *y = 0, *z = 0, *w = 0;
dagnode_t *n = 0, *ny, *nz, *nw;
daglabel_t *op, *lx;
flowvar_t *var;
int simp;
simp = find_operands (s, &x, &y, &z, &w);
if (x && (var = flow_get_var (x)))
set_add (var->define, s->number);
if (y && (var = flow_get_var (y)))
set_add (var->use, s->number);
if (z && (var = flow_get_var (z)))
set_add (var->use, s->number);
if (w && (var = flow_get_var (w)))
set_add (var->use, s->number);
if (!(ny = node (y))) {
ny = leaf_node (y);
if (simp) {

17
tools/qfcc/source/flow.c
View file

@ -321,6 +321,23 @@ flow_live_vars (flowgraph_t *graph)
void
flow_data_flow (flowgraph_t *graph)
{
int i, j;
flownode_t *node;
statement_t *st;
operand_t *d, *u[3];
flowvar_t *var;
for (i = 0; i < graph->num_nodes; i++) {
node = graph->nodes[i];
for (st = node->sblock->statements; st; st = st->next) {
find_operands (st, &d, &u[0], &u[1], &u[2]);
if (d && (var = flow_get_var (d)))
set_add (var->define, st->number);
for (j = 0; j < 3; j++)
if (u[j] && (var = flow_get_var (u[j])))
set_add (var->use, st->number);
}
}
flow_live_vars (graph);
}