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Watched Subcomponents
JDK
JDK-8299323
Allow extended registers for cmpw
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Details
Type:
Enhancement
Status:
Resolved
Priority:
P4
Resolution:
Fixed
Affects Version/s:
21
Fix Version/s:
21
Component/s:
hotspot
Labels:
None
Subcomponent:
compiler
Resolved In Build:
b06
CPU:
x86
Description
The current encoder for the cmpw(Address, int16_t) instruction on x64 does not allow rex extended registers. Generational ZGC needs to use this for arbitrary registers.
Attachments
Issue Links
links to
Commit
openjdk/jdk/b7fb8ef8
Review
openjdk/jdk/11776
Activity
People
Assignee:
Erik Ă–sterlund
Reporter:
Erik Ă–sterlund
Votes:
0
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Watchers:
3
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Dates
Created:
2022-12-23 04:35
Updated:
2023-01-23 15:42
Resolved:
2023-01-17 04:18