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Fixed detection of unconditional $readmem[hb]

This commit is contained in:
Clifford Wolf 2015-09-30 15:46:51 +02:00
parent c58bd5dc30
commit 9caeadf797
1 changed files with 11 additions and 4 deletions
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15
frontends/ast/simplify.cc
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@ -1718,12 +1718,19 @@ skip_dynamic_range_lvalue_expansion:;
bool unconditional_init = false;
if (current_always->type == AST_INITIAL) {
pool<AstNode*> queue;
log_assert(current_always->children[0]->type == AST_BLOCK);
for (auto n : current_always->children[0]->children)
if (n == this) {
unconditional_init = true;
break;
queue.insert(current_always->children[0]);
while (!unconditional_init && !queue.empty()) {
pool<AstNode*> next_queue;
for (auto n : queue)
for (auto c : n->children) {
if (c == this)
unconditional_init = true;
next_queue.insert(c);
}
next_queue.swap(queue);
}
}
newNode = readmem(str == "\\$readmemh", node_filename->bitsAsConst().decode_string(), node_memory->id2ast, start_addr, finish_addr, unconditional_init);