java-latest-openjdk/jdk8231405-guarantee_d_nonequals_null_failed_null_dominator_info.patch
2019-10-25 19:57:33 +02:00

105 lines
3.9 KiB
Diff

# HG changeset patch
# User roland
# Date 1569512984 -7200
# Node ID ee34d448e2172e536eaabf76cfc3d55f19ae4419
# Parent 8786c0e9b585592992f330ba6ee011a5347b2405
#8231405: [Shenandoah] guarantee(d != NULL) failed: Null dominator info
#Reviewed-by: shade, rkennke
diff -r 8786c0e9b585 -r ee34d448e217 src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp
--- a/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp Fri Aug 02 11:21:41 2019 +0200
+++ b/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp Thu Sep 26 17:49:44 2019 +0200
@@ -1329,6 +1329,18 @@
}
if ((ctrl->is_Proj() && ctrl->in(0)->is_CallJava()) || ctrl->is_CallJava()) {
CallNode* call = ctrl->is_Proj() ? ctrl->in(0)->as_CallJava() : ctrl->as_CallJava();
+ if (call->entry_point() == OptoRuntime::rethrow_stub()) {
+ // The rethrow call may have too many projections to be
+ // properly handled here. Given there's no reason for a
+ // barrier to depend on the call, move it above the call
+ if (phase->get_ctrl(val) == ctrl) {
+ assert(val->Opcode() == Op_DecodeN, "unexpected node");
+ assert(phase->is_dominator(phase->get_ctrl(val->in(1)), call->in(0)), "Load is too low");
+ phase->set_ctrl(val, call->in(0));
+ }
+ phase->set_ctrl(lrb, call->in(0));
+ continue;
+ }
CallProjections projs;
call->extract_projections(&projs, false, false);
diff -r 8786c0e9b585 -r ee34d448e217 test/hotspot/jtreg/gc/shenandoah/compiler/CallMultipleCatchProjs.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/gc/shenandoah/compiler/CallMultipleCatchProjs.java Thu Sep 26 17:49:44 2019 +0200
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2019, Red Hat, Inc. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @bug 8231405
+ * @summary barrier expansion breaks if barrier is right after call to rethrow stub
+ * @key gc
+ * @requires vm.gc.Shenandoah & !vm.graal.enabled
+ *
+ * @run main/othervm -XX:CompileOnly=CallMultipleCatchProjs::test -Xcomp -Xverify:none -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC CallMultipleCatchProjs
+ *
+ */
+
+public class CallMultipleCatchProjs {
+ private static A field = new A();
+
+ public static void main(String[] args) throws Exception {
+ Exception3 exception3 = new Exception3();
+ test(new Exception2());
+ }
+
+ static int test(Exception exception) throws Exception {
+ try {
+ throw exception;
+ } catch (Exception1 e1) {
+ return 1;
+ } catch (Exception2 e2) {
+ return field.i + 2;
+ } catch (Exception3 e3) {
+ return field.i + 3;
+ }
+ }
+
+ private static class Exception1 extends Exception {
+ }
+
+ private static class Exception2 extends Exception {
+ }
+
+ private static class Exception3 extends Exception {
+ }
+
+ private static class A {
+ public int i;
+ }
+}