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fix formatting, add TODO; NFC 

llvm-svn: 274238
This commit is contained in:
Sanjay Patel 2016-06-30 15:32:45 +00:00
parent 596a3bd9ec
commit 7521e1b880
1 changed files with 2 additions and 1 deletions
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llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
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@ -2176,6 +2176,7 @@ Instruction *InstCombiner::visitSwitchInst(SwitchInst &SI) {
unsigned LeadingKnownOnes = KnownOne.countLeadingOnes(); unsigned LeadingKnownOnes = KnownOne.countLeadingOnes();
// Compute the number of leading bits we can ignore. // Compute the number of leading bits we can ignore.
// TODO: A better way to determine this would use ComputeNumSignBits().
for (auto &C : SI.cases()) { for (auto &C : SI.cases()) {
LeadingKnownZeros = std::min( LeadingKnownZeros = std::min(
LeadingKnownZeros, C.getCaseValue()->getValue().countLeadingZeros()); LeadingKnownZeros, C.getCaseValue()->getValue().countLeadingZeros());