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AliasSet: Simplify mergeSetIn

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No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222376 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Majnemer
2014-11-19 19:36:18 +00:00
parent 53daaff125
commit a44c501561
1 changed files with 3 additions and 4 deletions
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7
lib/Analysis/AliasSetTracker.cpp
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@ -55,16 +55,15 @@ void AliasSet::mergeSetIn(AliasSet &AS, AliasSetTracker &AST) {
AliasTy = MayAlias; AliasTy = MayAlias;
} }
bool ASHadUnknownInsts = false; bool ASHadUnknownInsts = !AS.UnknownInsts.empty();
if (UnknownInsts.empty()) { // Merge call sites... if (UnknownInsts.empty()) { // Merge call sites...
if (!AS.UnknownInsts.empty()) { if (ASHadUnknownInsts) {
std::swap(UnknownInsts, AS.UnknownInsts); std::swap(UnknownInsts, AS.UnknownInsts);
addRef(); addRef();
} }
} else if (!AS.UnknownInsts.empty()) { } else if (ASHadUnknownInsts) {
UnknownInsts.insert(UnknownInsts.end(), AS.UnknownInsts.begin(), AS.UnknownInsts.end()); UnknownInsts.insert(UnknownInsts.end(), AS.UnknownInsts.begin(), AS.UnknownInsts.end());
AS.UnknownInsts.clear(); AS.UnknownInsts.clear();
ASHadUnknownInsts = true;
} }
AS.Forward = this; // Forward across AS now... AS.Forward = this; // Forward across AS now...