[llvm-bugs] [Bug 41874] New: [DAGCombine] Combine constant and+shift --> shift+shift

[via llvm-bugs]

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: unassignedbugs at nondot.org
          Reporter: llvm-dev at redking.me.uk
                CC: lebedev.ri at gmail.com, llvm-bugs at lists.llvm.org,
                    spatel+llvm at 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().

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20190514/7c81892b/attachment.html>