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8255936: "parsing found no loops but there are some" assertion failure with Shenandoah

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Reviewed-by: thartmann, rkennke
This commit is contained in:
Roland Westrelin 2020-11-18 09:24:17 +00:00
parent 6948456dbf
commit 655bb619a3
2 changed files with 3 additions and 1 deletions
src/hotspot/share/gc/shenandoah/c2
shenandoahSupport.cpp
test/hotspot/jtreg/gc/shenandoah/compiler
BarrierInInfiniteLoop.java

2
src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp

@ -49,7 +49,7 @@ bool ShenandoahBarrierC2Support::expand(Compile* C, PhaseIterGVN& igvn) {
state->load_reference_barriers_count()) > 0) {
bool attempt_more_loopopts = ShenandoahLoopOptsAfterExpansion;
C->clear_major_progress();
PhaseIdealLoop ideal_loop(igvn, LoopOptsShenandoahExpand);
PhaseIdealLoop::optimize(igvn, LoopOptsShenandoahExpand);
if (C->failing()) return false;
PhaseIdealLoop::verify(igvn);
DEBUG_ONLY(verify_raw_mem(C->root());)

2
test/hotspot/jtreg/gc/shenandoah/compiler/BarrierInInfiniteLoop.java

@ -30,6 +30,8 @@
*
* @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xcomp -XX:CompileOnly=BarrierInInfiniteLoop::test1
* -XX:CompileOnly=BarrierInInfiniteLoop::test2 -XX:CompileOnly=BarrierInInfiniteLoop::test3 -XX:CompileCommand=quiet BarrierInInfiniteLoop
* @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -Xcomp -XX:CompileOnly=BarrierInInfiniteLoop::test1
* -XX:CompileOnly=BarrierInInfiniteLoop::test2 -XX:CompileOnly=BarrierInInfiniteLoop::test3 -XX:CompileCommand=quiet BarrierInInfiniteLoop
*
*/