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| author | Philip Reames <listmail@philipreames.com> | 2021-03-09 12:35:16 -0800 |
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| committer | Philip Reames <listmail@philipreames.com> | 2021-03-09 12:37:17 -0800 |
| commit | a25b537bf437864232cb5826539eb4cee7c47b74 (patch) | |
| tree | 88c2e616ef10a205f5c6efa1b256924f9c342fa2 /llvm/lib/ProfileData/Coverage/CoverageMapping.cpp | |
| parent | 63200a058e6d5f275204154a16723e8f169a317a (diff) | |
| download | llvm-a25b537bf437864232cb5826539eb4cee7c47b74.zip llvm-a25b537bf437864232cb5826539eb4cee7c47b74.tar.gz llvm-a25b537bf437864232cb5826539eb4cee7c47b74.tar.bz2 | |
[SCEV] Infer known bits from known sign bits
This was suggested by lebedev.ri over on D96534. You'll note lack of tests. During review, we weren't actually able to find a case which exercises it, but both I and lebedev.ri feel it's a reasonable change, straight forward, and near free.
Differential Revision: https://reviews.llvm.org/D97064
Diffstat (limited to 'llvm/lib/ProfileData/Coverage/CoverageMapping.cpp')
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