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Avoid splitting an interval multiple times; avoid splitting re-materializable val# (for now).

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58068 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2008-10-24 02:05:00 +00:00
parent c9f3cc3bda
commit 06587497dc
6 changed files with 195 additions and 51 deletions
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9
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -948,6 +948,15 @@ bool LiveIntervals::isReMaterializable(const LiveInterval &li,
return true;
}
/// isReMaterializable - Returns true if the definition MI of the specified
/// val# of the specified interval is re-materializable.
bool LiveIntervals::isReMaterializable(const LiveInterval &li,
const VNInfo *ValNo, MachineInstr *MI) {
SmallVector<LiveInterval*, 4> Dummy1;
bool Dummy2;
return isReMaterializable(li, ValNo, MI, Dummy1, Dummy2);
}
/// isReMaterializable - Returns true if every definition of MI of every
/// val# of the specified interval is re-materializable.
bool LiveIntervals::isReMaterializable(const LiveInterval &li,