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Using "-msve-vector-bits=512" to build GROMACS on AArch64/SVE causes infinite compilation. #50829

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llvmbot opened this issue Aug 16, 2021 · 2 comments
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Using "-msve-vector-bits=512" to build GROMACS on AArch64/SVE causes infinite compilation. #50829

llvmbot opened this issue Aug 16, 2021 · 2 comments
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bugzilla Issues migrated from bugzilla llvm:codegen

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@llvmbot
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llvmbot commented Aug 16, 2021

Bugzilla Link 51487
Resolution FIXED
Resolved on Oct 11, 2021 20:29
Version trunk
OS All
Blocks #51489
Reporter LLVM Bugzilla Contributor
CC @tstellar
Fixed by commit(s) cd0e196 2153cad

Extended Description

As described in https://reviews.llvm.org/rG01b846674d27 this patch triggers a broken DAGCombine that results in a failure to build GROMACS when using "-msve-vector-bits=512". The fix D108086 has landed on main, but the release/13.x branch is also
affected.
@tstellar
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Merged: 2153cad

@tstellar
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mentioned in issue #51489

@tstellar tstellar mentioned this issue Oct 12, 2021
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@llvmbot llvmbot transferred this issue from llvm/llvm-bugzilla-archive Dec 11, 2021
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