- // check that all projs/keeps are behind their nodes
- if(proj_keep_mode == 0) {
- if(is_Proj(node)) {
- proj_keep_mode = 1;
- proj_keep_node = get_Proj_pred(node);
- if(get_Proj_pred(node) != sched_prev(node)) {
- ir_fprintf(stderr, "Proj %+F not scheduled after by its pred node in block %+F (%s)\n",
- node, block, get_irg_dump_name(env->irg));
- env->problem_found = 1;
- }
- } else if(be_is_Keep(node)) {
- proj_keep_mode = 2;
- proj_keep_node = get_irn_n(node, 0);
- if(proj_keep_node != sched_prev(node)) {
- ir_fprintf(stderr, "Proj %+F not scheduled after its pred node in block %+F (%s)\n",
- node, block, get_irg_dump_name(env->irg));
- env->problem_found = 1;
- }
-
- }
- } else if(proj_keep_mode == 1) {
- if(is_Proj(node)) {
- if(get_Proj_pred(node) != proj_keep_node) {
- ir_fprintf(stderr, "Proj %+F not scheduled after its pred node in block %+F (%s)\n",
- node, block, get_irg_dump_name(env->irg));
- env->problem_found = 1;
- }
- } else if(be_is_Keep(node)) {
- ir_node *pred = get_irn_n(node, 0);
- if(skip_Proj_const(pred) != proj_keep_node) {
- ir_fprintf(stderr, "Proj %+F not scheduled after its pred node in block %+F (%s)\n",
- node, block, get_irg_dump_name(env->irg));
- env->problem_found = 1;
- } else {
- proj_keep_mode = 2;
- }
- } else {
- proj_keep_mode = 0;
- proj_keep_node = NULL;
+ if(be_is_Keep(node)) {
+ /* at least 1 of the keep arguments has to be it schedule
+ * predecessor */
+ int arity = get_irn_arity(node);
+ int problem = 1;
+ ir_node *prev = sched_prev(node);
+ while(be_is_Keep(prev))
+ prev = sched_prev(prev);
+
+ for(i = 0; i < arity; ++i) {
+ ir_node *in = get_irn_n(node, i);
+ in = skip_Proj(in);
+ if(in == prev)
+ problem = 0;