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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 22
Affects Version/s: 17, 21, 22
Component/s: hotspot
Labels:

Subcomponent:
compiler
Resolved In Build:
b24

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8335246	21.0.5	Xiaolong Peng	P4	Resolved	Fixed	b01
JDK-8335405	17.0.13	Xiaolong Peng	P4	Resolved	Fixed	b01

Similar to ~~JDK-8255838~~, it would be useful to shorten movptr(reg, imm) when immediate fits in 32 bits. This would compact some code, notably the code in C1 profiling (~~JDK-8315843~~), but also other code, generically.

Early prototype shows 1% code saved for C1 tier3 and C2 tier4.

backported by

JDK-8335246 x86: Shorter movptr(reg, imm) for 32-bit immediates

Resolved

JDK-8335405 x86: Shorter movptr(reg, imm) for 32-bit immediates

Resolved

duplicates

JDK-8315843 C1: Use MDO offsets as int consts instead of intptr consts

Closed

relates to

JDK-8323503 x86: Shorter movptr(reg, imm) for 32-bit unsigned immediates

Resolved

JDK-8255838 Use 32-bit immediate movslq in macro assembler if 64-bit value fits in 32 bits on x86_64

Resolved

links to

Commit openjdk/jdk17u-dev/4e702a40

Commit openjdk/jdk21u-dev/e456f8bd

Commit openjdk/jdk/b120a05b

Review openjdk/jdk17u-dev/2638

Review openjdk/jdk21u-dev/771

Review openjdk/jdk/16497

(6 links to)

Assignee:: Aleksey Shipilev
Reporter:: Aleksey Shipilev
Votes:: 0 Vote for this issue
Watchers:: 4 Start watching this issue

Created:: 2023-11-03 08:23
Updated:: 2024-07-01 05:18
Resolved:: 2023-11-14 01:01

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