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Replace use of SmallVector::back + pop_back with pop_back_val

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I ran across an instance where the value was being loaded
out via back, then immediately popped.  Since pop_back_val
is more efficient at this (it moves out), replace this 
instance.

llvm-svn: 316015
This commit is contained in:
Erich Keane 2017-10-17 17:45:21 +00:00
parent 3f6c1627f7
commit cbb287c2ec
1 changed files with 1 additions and 2 deletions
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3
clang/lib/Sema/AnalysisBasedWarnings.cpp
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@ -361,8 +361,7 @@ static bool hasThrowOutNonThrowingFunc(SourceLocation &OpLoc, CFG *BodyCFG) {
SmallVector<CFGBlock *, 16> Stack;
Stack.push_back(&BodyCFG->getEntry());
while (!Stack.empty()) {
CFGBlock *CurBlock = Stack.back();
Stack.pop_back();
CFGBlock *CurBlock = Stack.pop_back_val();
unsigned ID = CurBlock->getBlockID();
ThrowState CurState = States[ID];