Reverted r156659, due to probable performance regressions, DenseMap should be used here:
IntegersSubsetMapping
- Replaced type of Items field from std::list with std::map. In neares future I'll test it with DenseMap and do the correspond replacement
if possible.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159703 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/LowerSwitch.cpp b/lib/Transforms/Utils/LowerSwitch.cpp
index d2bd9d0..1547439 100644
--- a/lib/Transforms/Utils/LowerSwitch.cpp
+++ b/lib/Transforms/Utils/LowerSwitch.cpp
@@ -238,14 +238,13 @@
size_t numCmps = 0;
for (IntegersSubsetToBB::RangeIterator i = TheClusterifier.begin(),
e = TheClusterifier.end(); i != e; ++i, ++numCmps) {
- const IntegersSubsetToBB::RangeTy &R = i->first;
- BasicBlock *S = i->second;
+ IntegersSubsetToBB::Cluster &C = *i;
// FIXME: Currently work with ConstantInt based numbers.
// Changing it to APInt based is a pretty heavy for this commit.
- Cases.push_back(CaseRange(R.getLow().toConstantInt(),
- R.getHigh().toConstantInt(), S));
- if (R.isSingleNumber())
+ Cases.push_back(CaseRange(C.first.getLow().toConstantInt(),
+ C.first.getHigh().toConstantInt(), C.second));
+ if (C.first.isSingleNumber())
// A range counts double, since it requires two compares.
++numCmps;
}