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LiveIntervalUnion: Allow specification of liverange when unifying/extracting.

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This allows it to add subregister ranges into the union.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223890 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matthias Braun
2014-12-10 01:12:59 +00:00
parent 84cc6ec889
commit 7b54b4de26
2 changed files with 17 additions and 11 deletions
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10
include/llvm/CodeGen/LiveIntervalUnion.h
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@@ -84,10 +84,16 @@ public:
bool changedSince(unsigned tag) const { return tag != Tag; }
// Add a live virtual register to this union and merge its segments.
void unify(LiveInterval &VirtReg);
void unify(LiveInterval &VirtReg, const LiveRange &Range);
void unify(LiveInterval &VirtReg) {
unify(VirtReg, VirtReg);
}
// Remove a live virtual register's segments from this union.
void extract(LiveInterval &VirtReg);
void extract(LiveInterval &VirtReg, const LiveRange &Range);
void extract(LiveInterval &VirtReg) {
extract(VirtReg, VirtReg);
}
// Remove all inserted virtual registers.
void clear() { Segments.clear(); ++Tag; }