RFR: 8233019: java.lang.Class.isPrimitive() (C1) returns wrong result if Klass* is aligned to 32bit
felix.yang at huawei.com
Mon Apr 26 12:52:11 UTC 2021
I find issue JDK-8239477  is triggering for 16 jfr jtreg tests with fastdebug build.
Fix for this issue depends on JDK-8233019 as it emits a compare with metadataConst(0).
So need to backport JDK-8233019 first.
Original patch does not apply to 8u cleanly. Two adaptations are made for 8u:
1. Discarded changes in file c1_LIRGenerator.cpp as JDK-8150669  is not there in 8u.
2. Added new test hotspot/test/compiler/intrinsics/class/TestClassIsPrimitive.java which was introduced by  and further modified by this issue.
Performed full jtreg test on both aarch64 and x86_64 linux platforms.
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