!212 I5KT34: fix StringConcat::validate_mem_flow asserts with unexpected user: StoreI
From: @kuenking111 Reviewed-by: @jvmboy Signed-off-by: @jvmboy
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@ -0,0 +1,145 @@
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diff --git a/src/hotspot/share/opto/stringopts.cpp b/src/hotspot/share/opto/stringopts.cpp
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index e8e493bce..91a3c998e 100644
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--- a/src/hotspot/share/opto/stringopts.cpp
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+++ b/src/hotspot/share/opto/stringopts.cpp
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@@ -1028,6 +1028,21 @@ bool StringConcat::validate_control_flow() {
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fail = true;
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break;
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} else if (ptr->is_Proj() && ptr->in(0)->is_Initialize()) {
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+ // Check for side effect between Initialize and the constructor
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+ for (SimpleDUIterator iter(ptr); iter.has_next(); iter.next()) {
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+ Node* use = iter.get();
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+ if (!use->is_CFG() && !use->is_CheckCastPP() && !use->is_Load()) {
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+#ifndef PRODUCT
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+ if (PrintOptimizeStringConcat) {
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+ tty->print_cr("unexpected control use of Initialize");
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+ ptr->in(0)->dump(); // Initialize node
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+ use->dump(1);
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+ }
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+#endif
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+ fail = true;
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+ break;
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+ }
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+ }
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ptr = ptr->in(0)->in(0);
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} else if (ptr->is_Region()) {
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Node* copy = ptr->as_Region()->is_copy();
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diff --git a/test/hotspot/jtreg/compiler/stringopts/SideEffectBeforeConstructor.jasm b/test/hotspot/jtreg/compiler/stringopts/SideEffectBeforeConstructor.jasm
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new file mode 100644
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index 000000000..cbc6d754b
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--- /dev/null
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+++ b/test/hotspot/jtreg/compiler/stringopts/SideEffectBeforeConstructor.jasm
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@@ -0,0 +1,58 @@
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+/*
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+ * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
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+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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+ *
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+ * This code is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License version 2 only, as
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+ * published by the Free Software Foundation.
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+ *
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+ * This code is distributed in the hope that it will be useful, but WITHOUT
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+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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+ * version 2 for more details (a copy is included in the LICENSE file that
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+ * accompanied this code).
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+ *
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+ * You should have received a copy of the GNU General Public License version
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+ * 2 along with this work; if not, write to the Free Software Foundation,
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+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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+ *
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+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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+ * or visit www.oracle.com if you need additional information or have any
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+ * questions.
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+ */
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+
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+super public class compiler/stringopts/SideEffectBeforeConstructor
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+ version 51:0
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+{
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+ public static Field result:I;
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+
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+ static Method "<clinit>":"()V"
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+ stack 2 locals 0
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+ {
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+ iconst_0;
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+ putstatic Field result:"I";
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+ return;
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+ }
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+ public Method "<init>":"()V"
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+ stack 1 locals 1
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+ {
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+ aload_0;
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+ invokespecial Method java/lang/Object."<init>":"()V";
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+ return;
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+ }
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+
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+ public static Method test:"(Ljava/lang/String;)V"
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+ stack 4 locals 1
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+ {
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+ new class java/lang/StringBuffer;
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+ dup;
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+ getstatic Field result:"I";
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+ iconst_1;
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+ iadd;
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+ putstatic Field result:"I";
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+ aload_0;
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+ invokespecial Method java/lang/StringBuffer."<init>":"(Ljava/lang/String;)V";
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+ invokevirtual Method java/lang/StringBuffer.toString:"()Ljava/lang/String;";
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+ return;
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+ }
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+}
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diff --git a/test/hotspot/jtreg/compiler/stringopts/TestSideEffectBeforeConstructor.java b/test/hotspot/jtreg/compiler/stringopts/TestSideEffectBeforeConstructor.java
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new file mode 100644
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index 000000000..86c5eca1d
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--- /dev/null
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+++ b/test/hotspot/jtreg/compiler/stringopts/TestSideEffectBeforeConstructor.java
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@@ -0,0 +1,49 @@
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+/*
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+ * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
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+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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+ *
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+ * This code is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License version 2 only, as
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+ * published by the Free Software Foundation.
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+ *
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+ * This code is distributed in the hope that it will be useful, but WITHOUT
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+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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+ * version 2 for more details (a copy is included in the LICENSE file that
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+ * accompanied this code).
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+ *
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+ * You should have received a copy of the GNU General Public License version
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+ * 2 along with this work; if not, write to the Free Software Foundation,
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+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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+ *
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+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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+ * or visit www.oracle.com if you need additional information or have any
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+ * questions.
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+ */
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+
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+/*
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+ * @test
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+ * @bug 8290705
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+ * @summary Test correctness of the string concatenation optimization with
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+ * a store between StringBuffer allocation and constructor invocation.
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+ * @compile SideEffectBeforeConstructor.jasm
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+ * @run main/othervm -Xbatch compiler.stringopts.TestSideEffectBeforeConstructor
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+ */
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+
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+package compiler.stringopts;
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+
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+public class TestSideEffectBeforeConstructor {
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+
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+ public static void main(String[] args) {
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+ for (int i = 0; i < 100_000; ++i) {
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+ try {
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+ SideEffectBeforeConstructor.test(null);
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+ } catch (NullPointerException npe) {
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+ // Expected
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+ }
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+ }
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+ if (SideEffectBeforeConstructor.result != 100_000) {
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+ throw new RuntimeException("Unexpected result: " + SideEffectBeforeConstructor.result);
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+ }
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+ }
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+}
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@ -740,7 +740,7 @@ Provides: java-src%{?1} = %{epoch}:%{version}-%{release}
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Name: java-%{javaver}-%{origin}
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Version: %{newjavaver}.%{buildver}
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Release: 0
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Release: 1
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# java-1.5.0-ibm from jpackage.org set Epoch to 1 for unknown reasons
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# and this change was brought into RHEL-4. java-1.5.0-ibm packages
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# also included the epoch in their virtual provides. This created a
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@ -875,6 +875,7 @@ Patch89: downgrade-the-symver-of-memcpy-GLIBC_2.14-on-x86.patch
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# 11.0.16
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Patch90: fix_Internal_and_external_code_inconsistency.patch
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Patch91: 8290705_fix_StringConcat_validate_mem_flow_asserts_with_unexpected_userStoreI.patch
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BuildRequires: autoconf
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@ -1165,6 +1166,7 @@ pushd %{top_level_dir_name}
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%patch88 -p1
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%patch89 -p1
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%patch90 -p1
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%patch91 -p1
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popd # openjdk
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# %patch1000
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@ -1674,6 +1676,9 @@ cjc.mainProgram(arg)
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%changelog
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* Fri Aug 5 2022 kuenking111 <wangkun49@huawei.com> - 1:11.0.16.8-1
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- add 8290705_fix_StringConcat_validate_mem_flow_asserts_with_unexpected_userStoreI.patch
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* Tue Jul 26 2022 kuenking111 <wangkun49@huawei.com> - 1:11.0.16.8-0
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- modified 8224675-Late-GC-barrier-insertion-for-ZGC.patch
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- modified ZGC-Redesign-C2-load-barrier-to-expand-on-th.patch
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