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7125879: assert(proj != NULL) failed: must be found

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Leave i_o attached to slow allocation call when there are no i_o users after the call.

Reviewed-by: iveresov, twisti
This commit is contained in:
Vladimir Kozlov 2011-12-30 11:43:06 -08:00
parent b6828ac542
commit 05ec1c0816
2 changed files with 61 additions and 3 deletions
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13
hotspot/src/share/vm/opto/macro.cpp
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@ -1503,9 +1503,16 @@ void PhaseMacroExpand::expand_allocate_common(
// if we generated only a slow call, we are done
if (always_slow) {
// Now we can unhook i_o.
call->set_req(TypeFunc::I_O, top());
if (result_phi_i_o->outcnt() == 0)
_igvn.remove_dead_node(result_phi_i_o);
if (result_phi_i_o->outcnt() > 1) {
call->set_req(TypeFunc::I_O, top());
} else {
assert(result_phi_i_o->unique_ctrl_out() == call, "");
// Case of new array with negative size known during compilation.
// AllocateArrayNode::Ideal() optimization disconnect unreachable
// following code since call to runtime will throw exception.
// As result there will be no users of i_o after the call.
// Leave i_o attached to this call to avoid problems in preceding graph.
}
return;
}