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Allow LiveRangeEdit to be created with a NULL parent.

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The dead code elimination with callbacks is still useful.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157100 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-05-19 05:25:46 +00:00
parent 791e629dee
commit 20942dcd86
5 changed files with 16 additions and 13 deletions
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lib/CodeGen/RegAllocBasic.cpp
+2 -2
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@@ -187,7 +187,7 @@ void RABasic::spillReg(LiveInterval& VirtReg, unsigned PhysReg,
unassign(SpilledVReg, PhysReg);
// Spill the extracted interval.
LiveRangeEdit LRE(SpilledVReg, SplitVRegs, *MF, *LIS, VRM);
LiveRangeEdit LRE(&SpilledVReg, SplitVRegs, *MF, *LIS, VRM);
spiller().spill(LRE);
}
// After extracting segments, the query's results are invalid. But keep the
@@ -287,7 +287,7 @@ unsigned RABasic::selectOrSplit(LiveInterval &VirtReg,
DEBUG(dbgs() << "spilling: " << VirtReg << '\n');
if (!VirtReg.isSpillable())
return ~0u;
LiveRangeEdit LRE(VirtReg, SplitVRegs, *MF, *LIS, VRM);
LiveRangeEdit LRE(&VirtReg, SplitVRegs, *MF, *LIS, VRM);
spiller().spill(LRE);
// The live virtual register requesting allocation was spilled, so tell