[llvm-bugs] [Bug 37761] New: [SelectionDAG] Generalise SelectionDAG::computeOverflowKind to support other opcodes

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=37761

            Bug ID: 37761
           Summary: [SelectionDAG] Generalise
                    SelectionDAG::computeOverflowKind to support other
                    opcodes
           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: deadalnix at gmail.com, lebedev.ri at gmail.com,
                    llvm-bugs at lists.llvm.org, spatel+llvm at rotateright.com

SelectionDAG::computeOverflowKind is currently only to be used for additions;
it'd be useful for it to also handle signed/unsigned ISD::SUB and ISD::MUL (to
cover all the SADDO/UADD, SSUBO/USUBO and SMULO/UMULO nodes).

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