93b5f33fa503634421e73e1ba4e4ec9fbf77b904 - llvm-project/llvm

commit: 93b5f33fa503634421e73e1ba4e4ec9fbf77b904
[log]
author: Alexey Bataev <a.bataev@outlook.com>
Wed Dec 24 06:40:00 2025 -0800
committer: Copybara-Service <copybara-worker@google.com>
Wed Dec 24 07:28:47 2025 -0800
tree: 1082d4384ffceab443bd6865e1a4ffc948efccdf
parent: c268c64b1bdec4b411f93d60c406602aa6e5b711 [diff]

[SLP]Do not vectorize buildvector tree will scalars in first node, which should remain scalars

Such trees will be revectorized again, causing a compiler hang.

Fixes #172609

GitOrigin-RevId: df87e19d3afe55b1bf2a7698f12c8cdff2833396

lib/Transforms/Vectorize/SLPVectorizer.cpp[diff]
test/Transforms/SLPVectorizer/RISCV/buildvector-all-external-scalars.ll[diff]

2 files changed

tree: 1082d4384ffceab443bd6865e1a4ffc948efccdf