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[CorrelatedValuePropagation] Remove comment about iterating switch cases in reverse order. This is no longer being done after r298791. NFC 

llvm-svn: 306151
This commit is contained in:
Craig Topper 2017-06-23 20:28:35 +00:00
parent 5f09852dfb
commit 29cdfe2cd9
1 changed files with 1 additions and 2 deletions
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llvm/lib/Transforms/Scalar/CorrelatedValuePropagation.cpp
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@ -232,8 +232,7 @@ static bool processSwitch(SwitchInst *SI, LazyValueInfo *LVI) {
pred_iterator PB = pred_begin(BB), PE = pred_end(BB); pred_iterator PB = pred_begin(BB), PE = pred_end(BB);
if (PB == PE) return false; if (PB == PE) return false;
// Analyse each switch case in turn. This is done in reverse order so that // Analyse each switch case in turn.
// removing a case doesn't cause trouble for the iteration.
bool Changed = false; bool Changed = false;
for (auto CI = SI->case_begin(), CE = SI->case_end(); CI != CE;) { for (auto CI = SI->case_begin(), CE = SI->case_end(); CI != CE;) {
ConstantInt *Case = CI->getCaseValue(); ConstantInt *Case = CI->getCaseValue();