[JDK-8005544] Use 256bit YMM registers in arraycopy stubs on x86 - Java Bug System

Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: hs25
Affects Version/s: None
Component/s: hotspot
Labels:
- hgupdate-sync
- sqe-8-noreglabel-backlog-startfresh

Subcomponent:
compiler
Resolved In Build:
b15
CPU:

x86

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8006495	8	Vladimir Kozlov	P4	Resolved	Fixed	b74
JDK-8017873	7u45	Vladimir Kozlov	P4	Closed	Fixed	b01
JDK-8006379	7u40	Vladimir Kozlov	P4	Closed	Fixed	b10
JDK-8006058	hs24	Vladimir Kozlov	P4	Resolved	Fixed	b29

New x86 processors with AVX2 have wide memory bus and improved memory operations with YMM registers. Use them to copy data in arraycopy stubs.

backported by

JDK-8006058 Use 256bit YMM registers in arraycopy stubs on x86

Resolved

JDK-8006495 Use 256bit YMM registers in arraycopy stubs on x86

Resolved

JDK-8006379 Use 256bit YMM registers in arraycopy stubs on x86

Closed

JDK-8017873 Use 256bit YMM registers in arraycopy stubs on x86

Closed

relates to

JDK-8005419 Improve intrinsics code performance on x86 by using AVX2

Resolved

JDK-8279621 x86_64 arraycopy stubs should use 256-bit copies with AVX=1

Closed

(1 relates to)

Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: hs25
Affects Version/s: None
Component/s: hotspot
Labels:
- hgupdate-sync
- sqe-8-noreglabel-backlog-startfresh

Subcomponent:
compiler
Resolved In Build:
b15
CPU:

x86

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8006495	8	Vladimir Kozlov	P4	Resolved	Fixed	b74
JDK-8017873	7u45	Vladimir Kozlov	P4	Closed	Fixed	b01
JDK-8006379	7u40	Vladimir Kozlov	P4	Closed	Fixed	b10
JDK-8006058	hs24	Vladimir Kozlov	P4	Resolved	Fixed	b29

New x86 processors with AVX2 have wide memory bus and improved memory operations with YMM registers. Use them to copy data in arraycopy stubs.

backported by

JDK-8006058 Use 256bit YMM registers in arraycopy stubs on x86

Resolved

JDK-8006495 Use 256bit YMM registers in arraycopy stubs on x86

Resolved

JDK-8006379 Use 256bit YMM registers in arraycopy stubs on x86

Closed

JDK-8017873 Use 256bit YMM registers in arraycopy stubs on x86

Closed

relates to

JDK-8005419 Improve intrinsics code performance on x86 by using AVX2

Resolved

JDK-8279621 x86_64 arraycopy stubs should use 256-bit copies with AVX=1

Closed

(1 relates to)

Assignee:: Vladimir Kozlov

Reporter:: Vladimir Kozlov

Votes:: 0 Vote for this issue

Watchers:: 2 Start watching this issue

Created:: 2012-12-27 10:04

Updated:: 2022-01-07 05:24

Resolved:: 2013-01-03 19:49

Assignee:: Vladimir Kozlov

Reporter:: Vladimir Kozlov

Votes:: 0 Vote for this issue

Watchers:: 2 Start watching this issue

Created:: 2012-12-27 10:04

Updated:: 2022-01-07 05:24

Resolved:: 2013-01-03 19:49

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