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src/hotspot/share/opto/memnode.cpp
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rev 54030 : 8219517: assert(false) failed: infinite loop in PhaseIterGVN::optimize
Reviewed-by:
@@ -1392,10 +1392,18 @@
if (cnt == 3) {
for (uint i = 1; i < cnt; i++) {
Node* in = mem->in(i);
Node* m = optimize_memory_chain(in, t_oop, this, phase);
if (m == mem) {
+ if (i == 1) {
+ // if the first was a loop, check second edge to.
+ // If both are replaceable - we are in an infinite loop
+ Node *n = optimize_memory_chain(mem->in(2), t_oop, this, phase);
+ if (n == mem) {
+ break;
+ }
+ }
set_req(Memory, mem->in(cnt - i));
return this; // made change
}
}
}
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