[llvm-bugs] [Bug 40487] New: CodeGenPrepare::CombineUAddWithOverflow - extend to handle usub_with_overflow

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=40487

            Bug ID: 40487
           Summary: CodeGenPrepare::CombineUAddWithOverflow - extend to
                    handle usub_with_overflow
           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: llvm-bugs at lists.llvm.org,
                    sanjoy at playingwithpointers.com,
                    spatel+llvm at rotateright.com

The patterns are very similar, we should be able to match both without much new
code.

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