https://llvm.org/bugs/show_bug.cgi?id=24085
Bug ID: 24085
Summary: r241927 caused some minor regressions on x86
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Backend: X86
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
This improvement to computeKnownBits allowed SelectionDAG to shrink some
constants more than before, which caused some minor regressions on x86 (see the
changes to tests in the commit). As in the Phabricator review of that patch,
this is a suboptimality in the x86 backend (presumably).
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