Wasmtime GitHub notifications bot (May 03 2022 at 16:31): Wasmtime GitHub notifications bot (May 03 2022 at 16:31):cfallin requested abrown for a review on PR #4094.
Wasmtime GitHub notifications bot (May 03 2022 at 16:31):cfallin opened PR #4094 from fix-xmm-pretty-printing-arg-order to main:
The pretty-printing had swapped dst and src2; this was introduced when
we moved to RA2 (sorry about that! IMHO we should do something to
automate the mapping between regalloc arg collection and pretty
printing/emission).
src2comes at the end because it has a variable number of register
mentions; this is in line with how many of the other inst formats work.Actual emitted code was never incorrect, just the pretty-printing.
Updated test golden outputs look correct to me now, including the one
that we saw was incorrect in #3945.<!--
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Wasmtime GitHub notifications bot (May 03 2022 at 16:34):abrown submitted PR review.
Wasmtime GitHub notifications bot (May 03 2022 at 16:34):abrown submitted PR review.
Wasmtime GitHub notifications bot (May 03 2022 at 16:34):abrown created PR review comment:
Why does changing the order of this matter? The format string hasn't changed...
Wasmtime GitHub notifications bot (May 03 2022 at 16:34):bjorn3 submitted PR review.
Wasmtime GitHub notifications bot (May 03 2022 at 16:34):bjorn3 created PR review comment:
How does this statement reordering change the format output? The
format!()call is still identical.
Wasmtime GitHub notifications bot (May 03 2022 at 16:37):cfallin submitted PR review.
Wasmtime GitHub notifications bot (May 03 2022 at 16:37):cfallin created PR review comment:
allocsis anAllocationConsumer, so invocation order matters here; the order must match the order in which we provide the register arguments inget_operands. (Yep, it's pretty fragile, and I want to find a better way; this was a result of the "don't mutate instructions post-regalloc" design decision that was part of the RA2 speedup.)
Wasmtime GitHub notifications bot (May 03 2022 at 16:37):cfallin submitted PR review.
Wasmtime GitHub notifications bot (May 03 2022 at 16:37):cfallin created PR review comment:
@bjorn3 see reply to abrown's identical question above :-)
Wasmtime GitHub notifications bot (May 03 2022 at 17:12):cfallin merged PR #4094.
Last updated: Oct 23 2024 at 20:03 UTC