[llvm] [SimplifyCFG] Find the minimal table considering overflow in `switchToLookupTable` (PR #67885)
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llvm-commits at lists.llvm.org
Sun Oct 1 11:15:09 PDT 2023
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@@ -6519,17 +6518,55 @@ static bool SwitchToLookupTable(SwitchInst *SI, IRBuilder<> &Builder,
SmallDenseMap<PHINode *, Type *> ResultTypes;
SmallVector<PHINode *, 4> PHIs;
- for (SwitchInst::CaseIt E = SI->case_end(); CI != E; ++CI) {
- ConstantInt *CaseVal = CI->getCaseValue();
- if (CaseVal->getValue().slt(MinCaseVal->getValue()))
- MinCaseVal = CaseVal;
- if (CaseVal->getValue().sgt(MaxCaseVal->getValue()))
- MaxCaseVal = CaseVal;
+ SmallVector<ConstantInt *, 8> CaseVals;
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goldsteinn wrote:
Can you reserve num cases?
https://github.com/llvm/llvm-project/pull/67885
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