8274406: RunThese30M.java failed "assert(!LCA_orig->dominates(pred_bl…

…ock) || early->dominates(pred_block)) failed: early is high enough"

Reviewed-by: kvn, thartmann

src/hotspot/share/opto/loopopts.cpp

@@ -1455,8 +1455,8 @@ void PhaseIdealLoop::try_sink_out_of_loop(Node* n) {
       if (n_loop != loop_ctrl && n_loop->is_member(loop_ctrl)) {
         // n has a control input inside a loop but get_ctrl() is member of an outer loop. This could happen, for example,
         // for Div nodes inside a loop (control input inside loop) without a use except for an UCT (outside the loop).
-        // Rewire control of n to get_ctrl(n) to move it out of the loop, regardless if its input(s) are later sunk or not.
-        _igvn.replace_input_of(n, 0, n_ctrl);
+        // Rewire control of n to right outside of the loop, regardless if its input(s) are later sunk or not.
+        _igvn.replace_input_of(n, 0, place_outside_loop(n_ctrl, loop_ctrl));
       }
     }
     if (n_loop != _ltree_root && n->outcnt() > 1) {

test/hotspot/jtreg/compiler/loopopts/TestSinkingDivisorLostPin.java

@@ -29,9 +29,9 @@
  * @summary Sinking a data node used as divisor of a DivI node into a zero check UCT loses its pin outside the loop due to
  *          optimizing the CastII node away, resulting in a div by zero crash (SIGFPE) due to letting the DivI node floating
  *          back inside the loop.
- * @run main/othervm -Xcomp -XX:CompileCommand=compileonly,compiler.loopopts.TestSinkingDivisorLostPin -XX:-TieredCompilation
+ * @run main/othervm -Xcomp -XX:CompileCommand=compileonly,compiler.loopopts.TestSinkingDivisorLostPin::* -XX:-TieredCompilation
  *                   -XX:+UnlockDiagnosticVMOptions -XX:+StressGCM -XX:StressSeed=4177789702 compiler.loopopts.TestSinkingDivisorLostPin
- * @run main/othervm -Xcomp -XX:CompileCommand=compileonly,compiler.loopopts.TestSinkingDivisorLostPin -XX:-TieredCompilation
+ * @run main/othervm -Xcomp -XX:CompileCommand=compileonly,compiler.loopopts.TestSinkingDivisorLostPin::* -XX:-TieredCompilation
  *                   -XX:+UnlockDiagnosticVMOptions -XX:+StressGCM compiler.loopopts.TestSinkingDivisorLostPin
  */