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8049348: compiler/intrinsics/bmi/verifycode tests on lzcnt and tzcnt use incorrect assumption about REXB prefix usage

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Reviewed-by: kvn
This commit is contained in:
Anton Ivanov 2014-07-19 00:33:37 +04:00
parent 1f29a205e2
commit 4f7af5c597
5 changed files with 29 additions and 15 deletions
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21
hotspot/test/compiler/intrinsics/bmi/verifycode/BmiIntrinsicBase.java
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@ -146,6 +146,10 @@ public class BmiIntrinsicBase extends CompilerWhiteBoxTest {
}
protected int countCpuInstructions(byte[] nativeCode) {
return countCpuInstructions(nativeCode, instrMask, instrPattern);
}
public static int countCpuInstructions(byte[] nativeCode, byte[] instrMask, byte[] instrPattern) {
int count = 0;
int patternSize = Math.min(instrMask.length, instrPattern.length);
boolean found;
@ -183,4 +187,21 @@ public class BmiIntrinsicBase extends CompilerWhiteBoxTest {
return "UseBMI1Instructions";
}
}
abstract static class BmiTestCase_x64 extends BmiTestCase {
protected byte[] instrMask_x64;
protected byte[] instrPattern_x64;
protected BmiTestCase_x64(Method method) {
super(method);
}
protected int countCpuInstructions(byte[] nativeCode) {
int cnt = super.countCpuInstructions(nativeCode);
if (Platform.isX64()) { // on x64 platform the instruction we search for can be encoded in 2 different ways
cnt += countCpuInstructions(nativeCode, instrMask_x64, instrPattern_x64);
}
return cnt;
}
}
}

5
hotspot/test/compiler/intrinsics/bmi/verifycode/LZcntTestI.java
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@ -33,12 +33,15 @@
import java.lang.reflect.Method;
public class LZcntTestI extends BmiIntrinsicBase.BmiTestCase {
public class LZcntTestI extends BmiIntrinsicBase.BmiTestCase_x64 {
protected LZcntTestI(Method method) {
super(method);
instrMask = new byte[]{(byte) 0xFF, (byte) 0xFF, (byte) 0xFF};
instrPattern = new byte[]{(byte) 0xF3, (byte) 0x0F, (byte) 0xBD};
instrMask_x64 = new byte[]{(byte) 0xFF, (byte) 0x00, (byte) 0xFF, (byte) 0xFF};
instrPattern_x64 = new byte[]{(byte) 0xF3, (byte) 0x00, (byte) 0x0F, (byte) 0xBD};
}
public static void main(String[] args) throws Exception {

6
hotspot/test/compiler/intrinsics/bmi/verifycode/LZcntTestL.java
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@ -31,8 +31,6 @@
* -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCountLeadingZerosInstruction LZcntTestL
*/
import com.oracle.java.testlibrary.Platform;
import java.lang.reflect.Method;
public class LZcntTestL extends LZcntTestI {
@ -40,10 +38,6 @@ public class LZcntTestL extends LZcntTestI {
protected LZcntTestL(Method method) {
super(method);
isLongOperation = true;
if (Platform.isX64()) {
instrMask = new byte[]{(byte) 0xFF, (byte) 0x00, (byte) 0xFF, (byte) 0xFF};
instrPattern = new byte[]{(byte) 0xF3, (byte) 0x00, (byte) 0x0F, (byte) 0xBD};
}
}
public static void main(String[] args) throws Exception {

5
hotspot/test/compiler/intrinsics/bmi/verifycode/TZcntTestI.java
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@ -33,12 +33,15 @@
import java.lang.reflect.Method;
public class TZcntTestI extends BmiIntrinsicBase.BmiTestCase {
public class TZcntTestI extends BmiIntrinsicBase.BmiTestCase_x64 {
protected TZcntTestI(Method method) {
super(method);
instrMask = new byte[]{(byte) 0xFF, (byte) 0xFF, (byte) 0xFF};
instrPattern = new byte[]{(byte) 0xF3, (byte) 0x0F, (byte) 0xBC};
instrMask_x64 = new byte[]{(byte) 0xFF, (byte) 0x00, (byte) 0xFF, (byte) 0xFF};
instrPattern_x64 = new byte[]{(byte) 0xF3, (byte) 0x00, (byte) 0x0F, (byte) 0xBC};
}
public static void main(String[] args) throws Exception {

7
hotspot/test/compiler/intrinsics/bmi/verifycode/TZcntTestL.java
View File

@ -31,8 +31,6 @@
* -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCountTrailingZerosInstruction TZcntTestL
*/
import com.oracle.java.testlibrary.Platform;
import java.lang.reflect.Method;
public class TZcntTestL extends TZcntTestI {
@ -40,11 +38,6 @@ public class TZcntTestL extends TZcntTestI {
protected TZcntTestL(Method method) {
super(method);
isLongOperation = true;
if (Platform.isX64()) {
instrMask = new byte[]{(byte) 0xFF, (byte) 0x00, (byte) 0xFF, (byte) 0xFF};
instrPattern = new byte[]{(byte) 0xF3, (byte) 0x00, (byte) 0x0F, (byte) 0xBC};
}
isLongOperation = true;
}
public static void main(String[] args) throws Exception {