[llvm] [SimplifyCFG] Don't use a mask for lookup tables generated from switches with an unreachable default case (PR #94468)
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llvm-commits at lists.llvm.org
Wed Jun 5 22:57:13 PDT 2024
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@@ -6895,8 +6895,9 @@ static bool SwitchToLookupTable(SwitchInst *SI, IRBuilder<> &Builder,
for (PHINode *PHI : PHIs) {
const ResultListTy &ResultList = ResultLists[PHI];
- // If using a bitmask, use any value to fill the lookup table holes.
- Constant *DV = NeedMask ? ResultLists[PHI][0].second : DefaultResults[PHI];
+ // Use any value to fill the lookup table holes.
+ Constant *DV = HolesHaveUndefinedResults ? ResultLists[PHI][0].second
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DianQK wrote:
But I'm not sure if this makes sense. :)
https://github.com/llvm/llvm-project/pull/94468
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