8171092: C1's Math.fma() intrinsic doesn't correctly process its inputs
Summary: fixed 3rd input of FMA intrinsic processing in C1.
Reviewed-by: kvn
/*
* Copyright (c) 2016, 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 8171092
* @summary C1's Math.fma() intrinsic doesn't correctly marks its inputs
* @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement TestFMABrokenC1RegAlloc
*
*/
public class TestFMABrokenC1RegAlloc {
double dummy0;
double dummy1;
double dummy2;
double dummy3;
double dummy4;
double dummy5;
double dummy6;
double dummy7;
double dummy8;
double dummy9;
double dummy10;
double dummy11;
double dummy12;
double dummy13;
double dummy14;
double dummy15;
double dummy16;
double dummy17;
double dummy18;
double dummy19;
double dummy20;
double dummy21;
double dummy22;
double dummy23;
double dummy24;
double dummy25;
double dummy26;
double dummy27;
double dummy28;
double dummy29;
double dummy30;
double dummy31;
double dummy32;
double dummy33;
double dummy34;
double dummy35;
double dummy36;
double dummy37;
double dummy38;
double dummy39;
double test(double a, double b, double c) {
double dummy0 = this.dummy0;
double dummy1 = this.dummy1;
double dummy2 = this.dummy2;
double dummy3 = this.dummy3;
double dummy4 = this.dummy4;
double dummy5 = this.dummy5;
double dummy6 = this.dummy6;
double dummy7 = this.dummy7;
double dummy8 = this.dummy8;
double dummy9 = this.dummy9;
double dummy10 = this.dummy10;
double dummy11 = this.dummy11;
double dummy12 = this.dummy12;
double dummy13 = this.dummy13;
double dummy14 = this.dummy14;
double dummy15 = this.dummy15;
double dummy16 = this.dummy16;
double dummy17 = this.dummy17;
double dummy18 = this.dummy18;
double dummy19 = this.dummy19;
double dummy20 = this.dummy20;
double dummy21 = this.dummy21;
double dummy22 = this.dummy22;
double dummy23 = this.dummy23;
double dummy24 = this.dummy24;
double dummy25 = this.dummy25;
double dummy26 = this.dummy26;
double dummy27 = this.dummy27;
double dummy28 = this.dummy28;
double dummy29 = this.dummy29;
double dummy30 = this.dummy30;
double dummy31 = this.dummy31;
double dummy32 = this.dummy32;
double dummy33 = this.dummy33;
double dummy34 = this.dummy34;
double dummy35 = this.dummy35;
double dummy36 = this.dummy36;
double dummy37 = this.dummy37;
double dummy38 = this.dummy38;
double dummy39 = this.dummy39;
return Math.fma(a, b, c) +
dummy0 +
dummy1 +
dummy2 +
dummy3 +
dummy4 +
dummy5 +
dummy6 +
dummy7 +
dummy8 +
dummy9 +
dummy10 +
dummy11 +
dummy12 +
dummy13 +
dummy14 +
dummy15 +
dummy16 +
dummy17 +
dummy18 +
dummy19 +
dummy20 +
dummy21 +
dummy22 +
dummy23 +
dummy24 +
dummy25 +
dummy26 +
dummy27 +
dummy28 +
dummy29 +
dummy30 +
dummy31 +
dummy32 +
dummy33 +
dummy34 +
dummy35 +
dummy36 +
dummy37 +
dummy38 +
dummy39;
}
static public void main(String[] args) {
TestFMABrokenC1RegAlloc t = new TestFMABrokenC1RegAlloc();
for (int i = 0; i < 5000; i++) {
if (t.test(5.0, 10.0, 7.0) != 57.0) {
throw new RuntimeException("Failed");
}
}
}
}