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Move LiveUnionArray into LiveIntervalUnion.h

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It is useful outside RegAllocBase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158041 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-06-05 23:57:30 +00:00
parent 2fd0923593
commit 0e5a60b4eb
4 changed files with 54 additions and 47 deletions
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23
lib/CodeGen/LiveIntervalUnion.cpp
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@ -208,3 +208,26 @@ bool LiveIntervalUnion::Query::checkLoopInterference(MachineLoopRange *Loop) {
VRI = VirtReg->advanceTo(VRI, Overlaps.start());
}
}
void LiveIntervalUnion::Array::init(LiveIntervalUnion::Allocator &Alloc,
unsigned NSize) {
// Reuse existing allocation.
if (NSize == Size)
return;
clear();
Size = NSize;
LIUs = static_cast<LiveIntervalUnion*>(
malloc(sizeof(LiveIntervalUnion)*NSize));
for (unsigned i = 0; i != Size; ++i)
new(LIUs + i) LiveIntervalUnion(Alloc);
}
void LiveIntervalUnion::Array::clear() {
if (!LIUs)
return;
for (unsigned i = 0; i != Size; ++i)
LIUs[i].~LiveIntervalUnion();
free(LIUs);
Size = 0;
LIUs = 0;
}