Wasmtime GitHub notifications bot (Mar 15 2023 at 16:21): Wasmtime GitHub notifications bot (Mar 15 2023 at 16:21):alexcrichton opened PR #6025 from splat to main:
This commit goes through the lowerings for the CLIF
splatinstruction and improves the support for each operator. Many of these lowerings are mirrored from v8/SpiderMonkey and there are a number of improvements:
- AVX2
v{p,}broadcast*instructions are added and used when available.- Float-based splats are much simpler and always a single-instruction
- Integer-based splats don't insert into an uninit xmm value and instead start out with a
movdto move into anxmmregister. This thoeretically breaks dependencies with prior instructions sincemovdcreates a fresh new value in the destination register.- Loads are now sunk into all of the instructions. A new extractor,
sinkable_load_exact, was added to sink the i8/i16 loads.<!--
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Wasmtime GitHub notifications bot (Mar 15 2023 at 17:31):fitzgen submitted PR review.
Wasmtime GitHub notifications bot (Mar 15 2023 at 21:01):alexcrichton updated PR #6025 from splat to main.
Wasmtime GitHub notifications bot (Mar 15 2023 at 21:01):alexcrichton has enabled auto merge for PR #6025.
Wasmtime GitHub notifications bot (Mar 15 2023 at 22:12):alexcrichton merged PR #6025.
Last updated: Oct 23 2024 at 20:03 UTC