Wasmtime GitHub notifications bot (Nov 08 2022 at 18:08): Wasmtime GitHub notifications bot (Nov 08 2022 at 18:08):cfallin opened PR #5226 from remove-x86-32-isms to main:
I was recently pointed to fastly/Viceroy#200 where it seems some folks are trying to compile Wasmtime (via Viceroy) for Windows x86-32 and the failures may not be loud enough. I've tried to reproduce this cross-compiling to i686-pc-windows-gnu from Linux and hit build failures (as expected) in several places. Nevertheless, while trying to discern what others may be attempting, I noticed some dead x86-32-specific code in our repo, and figured it would be a good idea to clean this up. Otherwise, it (i) sends some mixed messages -- "hey look, this codebase does support x86-32" -- and (ii) keeps untested code around, which is generally not great.
This PR removes x86-32-specific cases in traphandlers and unwind code, and Cranelift's native feature detection. It adds helpful compile-error messages in a few cases. If we ever support x86-32 (contributors welcome! The big missing piece is Cranelift support; see #1980), these compile errors and git history should be enough to recover any knowledge we are now encoding in the source.
I left the x86-32 support in
wasmtime-fiberalone because that seems like a bit of a special case -- foundation library, separate from the rest of Wasmtime, with specific care to provide a (presumably working) full 32-bit version.<!--
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Wasmtime GitHub notifications bot (Nov 08 2022 at 18:08):cfallin requested pchickey for a review on PR #5226.
Wasmtime GitHub notifications bot (Nov 08 2022 at 18:09):cfallin updated PR #5226 from remove-x86-32-isms to main.
Wasmtime GitHub notifications bot (Nov 08 2022 at 18:49):alexcrichton submitted PR review.
Wasmtime GitHub notifications bot (Nov 08 2022 at 21:52):cfallin updated PR #5226 from remove-x86-32-isms to main.
Wasmtime GitHub notifications bot (Nov 08 2022 at 21:52):cfallin has enabled auto merge for PR #5226.
Wasmtime GitHub notifications bot (Nov 08 2022 at 23:03):cfallin merged PR #5226.
Last updated: Dec 23 2024 at 12:05 UTC