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8274406: RunThese30M.java failed "assert(!LCA_orig->dominates(pred_block) || early->dominates(pred_block)) failed: early is high enough"

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Reviewed-by: kvn, thartmann
This commit is contained in:
Christian Hagedorn 2021-09-30 08:29:43 +00:00
parent c0533ef2d8
commit dfc557cbea
2 changed files with 4 additions and 4 deletions
src/hotspot/share/opto
loopopts.cpp
test/hotspot/jtreg/compiler/loopopts
TestSinkingDivisorLostPin.java

4
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) {

4
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
*/