Commit f2a6a970 authored by Simon Pilgrim's avatar Simon Pilgrim
Browse files

Fix MSVC "ignoring return value of function declared with 'nodiscard' attribute" warning. NFC.

parent 405932af

llvm/lib/Transforms/Utils/SimplifyCFG.cpp

+4 −2
Original line number Diff line number Diff line
@@ -6505,8 +6505,10 @@ static bool SwitchToLookupTable(SwitchInst *SI, IRBuilder<> &Builder, 
    // If the default is unreachable, all case values are s>= MinCaseVal. Then

    // we can try to attach nsw.

    bool MayWrap = true;

    if (!DefaultIsReachable)

      MaxCaseVal->getValue().ssub_ov(MinCaseVal->getValue(), MayWrap);

    if (!DefaultIsReachable) {

      APInt Res = MaxCaseVal->getValue().ssub_ov(MinCaseVal->getValue(), MayWrap);

      (void)Res;

    }



    TableIndex = Builder.CreateSub(SI->getCondition(), TableIndexOffset,

                                   "switch.tableidx", /*HasNUW =*/false,