Stream: git-wasmtime

Topic: wasmtime / PR #3538 aarch64: Remove manual sign extension...

Wasmtime GitHub notifications bot (Nov 16 2021 at 21:56):

alexcrichton opened PR #3538 from rm-sign-extend to main:

Currently the lowering for iconst will sign-extend the payload value
of the iconst instruction itself, but the payload is already
sign-extended to this isn't necessary. This commit removes the redundant
sign extension.

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Wasmtime GitHub notifications bot (Nov 16 2021 at 22:14):

cfallin submitted PR review.

Wasmtime GitHub notifications bot (Nov 16 2021 at 22:47):

alexcrichton merged PR #3538.

Wasmtime GitHub notifications bot (Nov 16 2021 at 23:47):

bjorn3 submitted PR review.

Wasmtime GitHub notifications bot (Nov 16 2021 at 23:47):

bjorn3 created PR review comment:

get_constant doesn't sign extend the immediate. It returns the raw bits. cg_clif chooses to zero extend immediates. https://github.com/bytecodealliance/wasmtime/blob/bae4ec642798ff448ca88eab771b6fcea71e7884/cranelift/codegen/src/inst_predicates.rs#L60

Last updated: Dec 23 2024 at 12:05 UTC