Bug 1011 - OPF ISA WG Draft RFC Research
Summary: OPF ISA WG Draft RFC Research
Alias: None
Product: Libre-SOC's first SoC
Classification: Unclassified
Component: Specification (show other bugs)
Version: unspecified
Hardware: Other Linux
: --- enhancement
Assignee: Luke Kenneth Casson Leighton
Depends on:
Blocks: 1009
  Show dependency treegraph
Reported: 2023-03-03 16:22 GMT by Luke Kenneth Casson Leighton
Modified: 2023-09-08 02:13 BST (History)
2 users (show)

See Also:
NLnet milestone: NLnet.2022-08-051.OPF
total budget (EUR) for completion of task and all subtasks: 19000
budget (EUR) for this task, excluding subtasks' budget: 0
parent task for budget allocation: 952
child tasks for budget allocation: 926 996 1016 1023 1043 1049 1051 1053 1063 1074
The table of payments (in EUR) for this task; TOML format:


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Description Luke Kenneth Casson Leighton 2023-03-03 16:22:24 GMT
Research and discussion is needed before an RFC to add new instructions
to the Power ISA is needed. Sometimes an instruction, if added, is just
not used enough to make it worthwhile. Others might be so specific that
they have very limited use-cases. Thus research is required to provide
justification for every instruction proposed.

note that work done prior to 25oct2022 is EXCLUDED and thus ls001-3
may not be applied for under this milestone.

This toplevel milestone will be broken down on an ongoing basis into
per-RFC Research bugreports.  Table of bugreports:

* bug #1074 twin butterfly
* bug #926  add-carry from CR Field
* bug #996  shaddsw
* bug #1016 int/fp mv
* bug #1023 crternlut analysis
* bug #1043 DCT REMAP
* bug #1049 ldst postinc
* bug #1051 ls012 research
* bug #1053 separate CR regfiles
* bug #1063 remove predicate-result
Comment 1 Jacob Lifshay 2023-09-08 02:13:30 BST
in case this task gets assigned more funding, we could work on the part of bug #937 about adding variable svoffset for dynamic bigint shifts