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Type: Enhancement
Resolution: Unresolved
Priority: P4
Fix Version/s: tbd
Affects Version/s: 23
Component/s: hotspot
Labels:
- apx
- performance

Subcomponent:
compiler
CPU:

x86_64
OS:

generic

Add initial support for Intel APX feature.

Specification:
https://www.intel.com/content/www/us/en/developer/articles/technical/advanced-performance-extensions-apx.html

causes

JDK-8359327 Incorrect AVX3Threshold results into code buffer overflows on APX targets

Resolved

JDK-8359386 Fix incorrect value for max_size of C2CodeStub when APX is used

Resolved

JDK-8360775 Fix Shenandoah GC test failures when APX is enabled

relates to

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

Resolved

JDK-8352317 Assertion failure during size estimation of BoxLockNode with -XX:+UseAPX

Resolved

JDK-8360776 Disable Intel APX by default and enable it with -XX:+UnlockExperimentalVMOptions -XX:+UseAPX in all builds

Open

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

Open

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

Resolved

JDK-8351158 Incorrect APX EGPR register save ordering

Resolved

JDK-8354668 Missing REX2 prefix accounting in ZGC barriers leads to incorrect encoding

Resolved

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

Resolved

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

Resolved

JDK-8354939 Extend peephole optimization rules for LEA detection on newly added NDD patterns

Open

JDK-8357267 ZGC: Handle APX EGPRs spilling in ZRuntimeCallSpill

Resolved

(9 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	Resolved	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	Resolved	Srinivas Parasa
14.	Enable Extended EVEX to REX2/REX demotion when src and dst are the same	Resolved	Srinivas Parasa
15.	Enable Extended EVEX to REX2/REX demotion when the second src and dst are the same	Open	Srinivas Parasa
16.	Enable paired pushp and popp instruction usage for APX enabled CPUs	Open	Srinivas Parasa

Assignee:: Jatin Bhateja

Reporter:: Jatin Bhateja

Votes:: 0 Vote for this issue

Watchers:: 7 Start watching this issue

Created:: 2024-03-26 00:29

Updated:: 3 days ago 22:36

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