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LiveRange: Replace a creative vector erase loop with std::remove_if.

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I didn't see this so far because it scans backwards, but that doesn't
make it any less quadratic. NFC.

llvm-svn: 230863
This commit is contained in:
Benjamin Kramer 2015-02-28 20:14:27 +00:00
parent d89d4c9132
commit 9d5f68f7ad
1 changed files with 3 additions and 7 deletions
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10
lib/CodeGen/LiveInterval.cpp
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@ -567,13 +567,9 @@ void LiveRange::removeSegment(SlotIndex Start, SlotIndex End,
/// Also remove the value# from value# list.
void LiveRange::removeValNo(VNInfo *ValNo) {
if (empty()) return;
iterator I = end();
iterator E = begin();
do {
--I;
if (I->valno == ValNo)
segments.erase(I);
} while (I != E);
segments.erase(std::remove_if(begin(), end(), [ValNo](const Segment &S) {
return S.valno == ValNo;
}), end());
// Now that ValNo is dead, remove it.
markValNoForDeletion(ValNo);
}