Stream: git-wasmtime

Topic: wasmtime / PR #9030 Fix `fmin`/`fmax` cprop miscompilatio...

Wasmtime GitHub notifications bot (Jul 27 2024 at 18:34):

beetrees requested wasmtime-compiler-reviewers for a review on PR #9030.

Wasmtime GitHub notifications bot (Jul 27 2024 at 18:34):

beetrees requested fitzgen for a review on PR #9030.

Wasmtime GitHub notifications bot (Jul 27 2024 at 18:34):

beetrees opened PR #9030 from beetrees:fix-cprop-fmin-fmax to bytecodealliance:main:

Currently, constant propagation for f32/f64 fmin/fmax always outputs the first input when both inputs are zeros. However, the semantics of the fmin/fmax instructions require that -0.0 be treated as less than 0.0. This PR fixes this and adds tests to ensure it does not reoccur. Const prop support for f16/f128 fmin/fmax is also added.

f16/f128 issue: #8312

Wasmtime GitHub notifications bot (Jul 27 2024 at 18:36):

beetrees edited PR #9030:

Currently, constant propagation for f32/f64 fmin/fmax always outputs the first input when both inputs are zeros. However, the semantics of the fmin/fmax instructions require that -0.0 be treated as less than 0.0. This PR fixes this and adds test cases to ensure the issue does not reoccur. Const prop support for f16/f128 fmin/fmax is also added.

f16/f128 issue: #8312

Wasmtime GitHub notifications bot (Jul 27 2024 at 20:44):

github-actions[bot] commented on PR #9030:

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cc @cfallin, @fitzgen

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Wasmtime GitHub notifications bot (Jul 29 2024 at 16:12):

fitzgen submitted PR review:

Looks great, thanks!

Wasmtime GitHub notifications bot (Jul 29 2024 at 16:29):

fitzgen merged PR #9030.

Last updated: Dec 06 2025 at 06:05 UTC