https://bugs.llvm.org/show_bug.cgi?id=41874
Bug ID: 41874
Summary: [DAGCombine] Combine constant and+shift -->
shift+shift
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Common Code Generator Code
Assignee: unassignedb...@nondot.org
Reporter: llvm-...@redking.me.uk
CC: lebedev...@gmail.com, llvm-bugs@lists.llvm.org,
spatel+l...@rotateright.com
As suggested on D61830:
> Also, do we want to unfold and (shift x, c1), c2 / shift (and x, c1), c2 ?
> Not sure, under !TLI.shouldFoldConstantShiftPairToMask() or a new
> shouldFoldMaskToConstantShiftPair().
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