[llvm-bugs] [Bug 31293] New: Poor handling of SMIN/SMAX/UMIN/UMAX in SelectionDAG::computeKnownBits

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31293

            Bug ID: 31293
           Summary: Poor handling of SMIN/SMAX/UMIN/UMAX in
                    SelectionDAG::computeKnownBits
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: llvm-dev at redking.me.uk
                CC: llvm-bugs at lists.llvm.org, Matthew.Arsenault at amd.com,
                    spatel+llvm at rotateright.com
    Classification: Unclassified

SelectionDAG.computeKnownBits is only testing for common known zero/one bits in
the integer min/max opcodes. This can be a lot better.

-- 
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/20161206/3e9c6d49/attachment.html>