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DeltaAlgorithm: Tweak split to split by first/second half instead of even/odd, since adjacent changes are more likely to be related.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105613 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar 2010-06-08 16:21:26 +00:00
parent 73c6031a25
commit 18ed7b27eb
1 changed files with 2 additions and 2 deletions
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4
lib/Support/DeltaAlgorithm.cpp
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@ -30,10 +30,10 @@ void DeltaAlgorithm::Split(const changeset_ty &S, changesetlist_ty &Res) {
// FIXME: This is really slow.
changeset_ty LHS, RHS;
unsigned idx = 0;
unsigned idx = 0, N = S.size() / 2;
for (changeset_ty::const_iterator it = S.begin(),
ie = S.end(); it != ie; ++it, ++idx)
((idx & 1) ? LHS : RHS).insert(*it);
((idx < N) ? LHS : RHS).insert(*it);
if (!LHS.empty())
Res.push_back(LHS);
if (!RHS.empty())