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cmd/compile: clarification on Zicclsm extension and unaligned accesses for RISC-V #76919

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cmd/compile: clarification on Zicclsm extension and unaligned accesses for RISC-V#76919
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NeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.QuestionIssues that are questions about using Go.WaitingForInfoIssue is not actionable because of missing required information, which needs to be provided.arch-riscvIssues solely affecting the riscv64 architecture.compiler/runtimeIssues related to the Go compiler and/or runtime.
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@kevaundray
kevaundray
opened on Dec 18, 2025

Currently Golang supports a few RISCV-V profiles. Just looking at RVA20U64, it supports the Zicclsm extension which allows for unaligned accesses.

Is there a clarifying document on whether unaligned stores and loads are classified as bugs for the golang compiler?

One reference that points towards this is the replies in this thread: https://groups.google.com/g/golang-dev/c/5Om3lJcYxzA/m/UyhzduXTBgAJ?utm_medium=email&utm_source=footer

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    NeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.QuestionIssues that are questions about using Go.WaitingForInfoIssue is not actionable because of missing required information, which needs to be provided.arch-riscvIssues solely affecting the riscv64 architecture.compiler/runtimeIssues related to the Go compiler and/or runtime.

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