Commit 8f445230 authored by Michael Beck's avatar Michael Beck
Browse files

BugFix: if a Load-after-Load is a hidden Conv, Conv nodes were constructed but not used ...

[r8600]
parent b227a3d3
......@@ -489,7 +489,7 @@ static unsigned follow_Mem_chain(ir_node *load, ir_node *curr) {
* We could make it a little bit better if we would know that the exception
* handler of the Store jumps directly to the end...
*/
if ((!pred_info->projs[pn_Store_X_except] && !info->projs[pn_Load_X_except]) ||
if ((pred_info->projs[pn_Store_X_except] == NULL && info->projs[pn_Load_X_except] == NULL) ||
get_nodes_block(load) == get_nodes_block(pred)) {
ir_node *value = get_Store_value(pred);
......@@ -527,36 +527,30 @@ static unsigned follow_Mem_chain(ir_node *load, ir_node *curr) {
* Here, there is no need to check if the previous Load has an exception
* hander because they would have exact the same exception...
*/
if (! info->projs[pn_Load_X_except] || get_nodes_block(load) == get_nodes_block(pred)) {
if (info->projs[pn_Load_X_except] == NULL || get_nodes_block(load) == get_nodes_block(pred)) {
ir_node *value;
DBG_OPT_RAR(load, pred);
if (pred_info->projs[pn_Load_res]) {
ir_node *value = pred_info->projs[pn_Load_res];
/* the result is used */
if (info->projs[pn_Load_res]) {
if (pred_info->projs[pn_Load_res] == NULL) {
/* create a new Proj again */
pred_info->projs[pn_Load_res] = new_r_Proj(current_ir_graph, get_nodes_block(pred), pred, get_Load_mode(pred), pn_Load_res);
}
value = pred_info->projs[pn_Load_res];
/* add an convert if needed */
if (get_Load_mode(pred) != load_mode) {
value = new_r_Conv(current_ir_graph, get_nodes_block(load), value, load_mode);
}
/* we need a data proj from the previous load for this optimization */
if (info->projs[pn_Load_res])
exchange(info->projs[pn_Load_res], pred_info->projs[pn_Load_res]);
if (info->projs[pn_Load_M])
exchange(info->projs[pn_Load_M], mem);
} else {
if (info->projs[pn_Load_res]) {
set_Proj_pred(info->projs[pn_Load_res], pred);
set_nodes_block(info->projs[pn_Load_res], get_nodes_block(pred));
pred_info->projs[pn_Load_res] = info->projs[pn_Load_res];
}
if (info->projs[pn_Load_M]) {
/* Actually, this if should not be necessary. Construct the Loads
properly!!! */
exchange(info->projs[pn_Load_M], mem);
}
exchange(info->projs[pn_Load_res], value);
}
if (info->projs[pn_Load_M])
exchange(info->projs[pn_Load_M], mem);
/* no exception */
if (info->projs[pn_Load_X_except]) {
exchange(info->projs[pn_Load_X_except], new_Bad());
......@@ -570,7 +564,7 @@ static unsigned follow_Mem_chain(ir_node *load, ir_node *curr) {
}
if (get_irn_op(pred) == op_Store) {
/* check if we can pass thru this store */
/* check if we can pass through this store */
ir_alias_relation rel = get_alias_relation(
current_ir_graph,
get_Store_ptr(pred),
......
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