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8272562: C2: assert(false) failed: Bad graph detected in build_loop_late

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Reviewed-by: chagedorn, kvn
This commit is contained in:
Roland Westrelin 2021-09-29 14:51:33 +00:00
parent 1dc8fa9902
commit 980c50dc60
2 changed files with 55 additions and 1 deletions
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3
src/hotspot/share/opto/loopopts.cpp
View File

@ -1445,7 +1445,8 @@ void PhaseIdealLoop::try_sink_out_of_loop(Node* n) {
!n->is_MergeMem() &&
!n->is_CMove() &&
!is_raw_to_oop_cast && // don't extend live ranges of raw oops
n->Opcode() != Op_Opaque4) {
n->Opcode() != Op_Opaque4 &&
!n->is_Type()) {
Node *n_ctrl = get_ctrl(n);
IdealLoopTree *n_loop = get_loop(n_ctrl);

53
test/hotspot/jtreg/compiler/loopopts/TestSunkCastOnUnreachablePath.java Normal file
View File

@ -0,0 +1,53 @@
/*
* Copyright (c) 2021, 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 8272562
* @summary C2: assert(false) failed: Bad graph detected in build_loop_late
*
* @run main/othervm -XX:CompileOnly=TestSunkCastOnUnreachablePath -XX:-TieredCompilation -Xbatch TestSunkCastOnUnreachablePath
*
*/
public class TestSunkCastOnUnreachablePath {
public static void main(String[] strArr) {
for (int i = 0; i < 1000; i++) {
vMeth();
}
}
static int vMeth() {
int i2 = 3, iArr1[] = new int[200];
for (int i9 = 3; i9 < 100; i9++) {
try {
int i10 = (iArr1[i9 - 1]);
i2 = (i10 / i9);
} catch (ArithmeticException a_e) {
}
}
return i2;
}
}