[PATCH 4/4] x86: move operand_types[] out of struct insn_template
Project / Subsystem
binutils / x86
Date
2026-07-24
Proposer
Jan Beulich <jbeulich@suse.com>
Source type
public_inbox
Consensus
Proposed
Sentiment
—/10
Technical tradeoffs
- • Reduced memory footprint and improved cache performance due to data deduplication and consolidation.
- • Potential increase in indirection complexity by accessing operand types via an index instead of directly within the template struct.
All attributes
- project
- binutils
- subsystem
- x86
- patch_id
- —
- discussion_id
- 48ecade1-d5f0-4620-a028-bece8d2b90cb@suse.com
- source_type
- public_inbox
- title
- [PATCH 4/4] x86: move operand_types[] out of struct insn_template
- headline
- x86: move operand_types[] out of struct insn_template
- tldr
- Reduces memory usage and improves cache efficiency by moving operand type definitions out of instruction templates.
- proposer
- Jan Beulich <jbeulich@suse.com>
- consensus
- Proposed
- outcome
- proposed
- sentiment_score
- —
- technical_tradeoffs
-
- • Reduced memory footprint and improved cache performance due to data deduplication and consolidation.
- • Potential increase in indirection complexity by accessing operand types via an index instead of directly within the template struct.
- series_id
- binutils:x86: move operand_types[] out of struct insn_template
- series_role
- reply
- series_parts
- []
- tags
-
- • x86
- • gas
- • optimization
- • memory-management
- • performance
- bugzilla_url
- —
- date
- 2026-07-24T00:00:00.000Z
[PATCH 4/4] x86: move operand_types[] out of struct insn_template
Jan Beulich’s fourth patch in a series reorganizes x86 instruction templates by moving the operand_types array out of the struct insn_template. This change aims to reduce memory usage and improve cache utilization by storing common operand combinations in a separate, shared array. It significantly reduces the number of i386_operand_type instances, from over 22,000 to 770.