[PATCH 17/23] aarch64: Add explicit all-nil qualifers to opcode table
Project / Subsystem
binutils / aarch64
Date
2026-05-07
Proposer
Alice Carlotti <alice.carlotti@arm.com>
Source type
public_inbox
Consensus
Proposed
Sentiment
—/10
Technical tradeoffs
- • Increases the size of the opcode table.
- • Improves code clarity and maintainability by avoiding implicit assumptions about the value of `AARCH64_OPND_QLF_NIL`.
All attributes
- project
- binutils
- subsystem
- aarch64
- patch_id
- —
- discussion_id
- 9fcc68b2-d261-6eaa-3631-9cf1b5cca568@e124511.cambridge.arm.com
- source_type
- public_inbox
- title
- [PATCH 17/23] aarch64: Add explicit all-nil qualifers to opcode table
- headline
- Aarch64: Add explicit all-nil qualifers to opcode table
- tldr
- Make the `NIL` qualifier value explicit in qualifier sequences to avoid relying on its implicit zero value.
- proposer
- Alice Carlotti <alice.carlotti@arm.com>
- consensus
- Proposed
- outcome
- proposed
- sentiment_score
- —
- technical_tradeoffs
-
- • Increases the size of the opcode table.
- • Improves code clarity and maintainability by avoiding implicit assumptions about the value of `AARCH64_OPND_QLF_NIL`.
- series_id
- binutils:aarch64: add explicit all-nil qualifers to opcode table
- series_role
- reply
- series_parts
- []
- tags
-
- • aarch64
- • assembler
- • opcode table
- • qualifier
- • NIL
- url
- https://inbox.sourceware.org/binutils/9fcc68b2-d261-6eaa-3631-9cf1b5cca568@e124511.cambridge.arm.com
- bugzilla_url
- —
- date
- 2026-05-07T00:00:00.000Z
[PATCH 17/23] aarch64: Add explicit all-nil qualifers to opcode table
This patch updates the opcode table to explicitly define all-NIL qualifier sequences. The AARCH64_OPND_QLF_NIL qualifier will soon have a nonzero enum value. This change ensures that qualifier sequences that are intended to be all-NIL are explicitly defined as such, rather than relying on the implicit zero value of uninitialized memory. This prevents unexpected behavior when AARCH64_OPND_QLF_NIL changes.