--- a/src/hotspot/cpu/x86/x86.ad Tue Jan 22 18:13:49 2019 -0800
+++ b/src/hotspot/cpu/x86/x86.ad Tue Jan 22 18:14:14 2019 -0800
@@ -1638,6 +1638,7 @@
// Cheap to find it by looking for screwy base.
if (adr->is_AddP() &&
!adr->in(AddPNode::Base)->is_top() &&
+ LP64_ONLY( off->get_long() == (int) (off->get_long()) && ) // immL32
// Are there other uses besides address expressions?
!is_visited(adr)) {
address_visited.set(adr->_idx); // Flag as address_visited
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/compiler/c2/TestMatcherLargeOffset.java Tue Jan 22 18:14:14 2019 -0800
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. 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 8202952
+ * @summary C2: Unexpected dead nodes after matching
+ *
+ * @run main/othervm -XX:-TieredCompilation -Xcomp -XX:CompileOnly=::test
+ * compiler.c2.TestMatcherLargeOffset
+ */
+package compiler.c2;
+
+public class TestMatcherLargeOffset {
+ public static final int N = 400;
+ public static int iArrFld[] = new int[N];
+
+ public static void m(int i4) {
+ i4 |= -104;
+ iArrFld[(i4 >>> 1) % N] >>= i4;
+ }
+
+ public static void test() {
+ int i2 = 1, i24 = 65;
+ for (int i1 = 7; i1 < 384; ++i1) {
+ for (long l = 2; l < 67; l++) {
+ m(i2);
+ for (i24 = 1; 2 > i24; ++i24) {
+ iArrFld = iArrFld;
+ }
+ }
+ i2 = (-229 / i24);
+ }
+ }
+ public static void main(String[] strArr) {
+ for (int i = 0; i < 5; i++ ) {
+ test();
+ }
+ }
+}