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Bug
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Resolution: Duplicate
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P4
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None
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8u361
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x86_64
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linux
ADDITIONAL SYSTEM INFORMATION :
22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Fri Mar 17 21:16:15 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
openjdk version "1.8.0_362"
OpenJDK Runtime Environment (Temurin)(build 1.8.0_362-b09)
OpenJDK 64-Bit Server VM (Temurin)(build 25.362-b09, mixed mode)
openjdk version "11.0.18" 2023-01-17
OpenJDK Runtime Environment Temurin-11.0.18+10 (build 11.0.18+10)
OpenJDK 64-Bit Server VM Temurin-11.0.18+10 (build 11.0.18+10, mixed mode)
A DESCRIPTION OF THE PROBLEM :
This test case mainly contains a lot of loops, causing JIT optimizations to be triggered during execution. And we computed the check sum of the returned values after the cmp instruction and found that the final result of the check sum is uncertain. So we tried -Xint and -Xcomp and found that the results were different, most likely due to optimization issues.
You can download the test cases at the link below:
https://drive.google.com/file/d/1sXIhE5GJKFy4io2lZKs_NEJNB_gdpEkI/view?usp=sharing
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
./run.sh javapath
EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ -Xint compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ -Xcomp compiler.runtime.Test6826736
CHECKSUM:25502500
ACTUAL -
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502548
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502534
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502508
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502529
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502575
jdk_linux_8_hotspot/bin/java -cp ./ -Xint compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ -Xcomp compiler.runtime.Test6826736
CHECKSUM:25502547
FREQUENCY : always
22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Fri Mar 17 21:16:15 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
openjdk version "1.8.0_362"
OpenJDK Runtime Environment (Temurin)(build 1.8.0_362-b09)
OpenJDK 64-Bit Server VM (Temurin)(build 25.362-b09, mixed mode)
openjdk version "11.0.18" 2023-01-17
OpenJDK Runtime Environment Temurin-11.0.18+10 (build 11.0.18+10)
OpenJDK 64-Bit Server VM Temurin-11.0.18+10 (build 11.0.18+10, mixed mode)
A DESCRIPTION OF THE PROBLEM :
This test case mainly contains a lot of loops, causing JIT optimizations to be triggered during execution. And we computed the check sum of the returned values after the cmp instruction and found that the final result of the check sum is uncertain. So we tried -Xint and -Xcomp and found that the results were different, most likely due to optimization issues.
You can download the test cases at the link below:
https://drive.google.com/file/d/1sXIhE5GJKFy4io2lZKs_NEJNB_gdpEkI/view?usp=sharing
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
./run.sh javapath
EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ -Xint compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ -Xcomp compiler.runtime.Test6826736
CHECKSUM:25502500
ACTUAL -
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502548
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502534
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502508
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502529
jdk_linux_8_hotspot/bin/java -cp ./ compiler.runtime.Test6826736
CHECKSUM:25502575
jdk_linux_8_hotspot/bin/java -cp ./ -Xint compiler.runtime.Test6826736
CHECKSUM:25502500
jdk_linux_8_hotspot/bin/java -cp ./ -Xcomp compiler.runtime.Test6826736
CHECKSUM:25502547
FREQUENCY : always
- duplicates
-
JDK-8290451 Incorrect result when switching to C2 OSR compilation from C1
- Resolved