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JDK-8347422 Crash during safepoint handler execution with -XX:+UseAPX

JDK-8351016 RA support for EVEX to REX/REX2 demotion to optimize NDD instructions

JDK-8341832 Incorrect continuation address of synthetic SIGSEGV for APX in product builds

JDK-8351158 Incorrect APX EGPR register save ordering

JDK-8339793 Fix incorrect APX feature enabling with -XX:-UseAPX

JDK-8343214 Fix encoding errors in APX New Data Destination Instructions Support

(1 relates to)

1.	Encoding support for APX extended general-purpose registers	Closed	Unassigned
2.	CPUID feature detection for Advanced Performance Extensions (Intel® APX)	Resolved	Jatin Bhateja
3.	C2 compiler register allocation support for APX EGPRs	Resolved	Jatin Bhateja
4.	C1 Compiler register allocation support for EGPRs	Open	Jatin Bhateja
5.	Support 64-BIT direct absolute JUMP instruction.	Open	Jatin Bhateja
6.	New Data Destination instructions support	Resolved	Steve Dohrmann (Inactive)
7.	New conditional compare and test support.	Open	Jatin Bhateja
8.	Encoding support for Intel APX extended general-purpose registers	Resolved	Sandhya Viswanathan
9.	Add JVMCI support for APX EGPRs	Open	Yudi Zheng
10.	Test generation tool and gtest for testing APX encoding of extended gpr instructions	Resolved	Sandhya Viswanathan
11.	Support Intel APX setzucc instruction	Resolved	Jatin Bhateja
12.	Extend test generation tool to handle APX NDD/NF flavor of instructions	Resolved	Sandhya Viswanathan
13.	APX NDD code generation for OpenJDK	Open	Srinivas Parasa