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I accidentally removed this check in an earlier commit, which cause breakage in the pre alloc splitter.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62678 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2009-01-21 08:18:03 +00:00
parent 08b9b05218
commit d3be46214c
1 changed files with 4 additions and 0 deletions
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4
lib/CodeGen/PreAllocSplitting.cpp
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@ -1219,6 +1219,10 @@ bool PreAllocSplitting::SplitRegLiveInterval(LiveInterval *LI) {
MachineInstr *DefMI = (ValNo->def != ~0U)
? LIs->getInstructionFromIndex(ValNo->def) : NULL;
// If this would create a new join point, do not split.
if (DefMI && createsNewJoin(LR, DefMI->getParent(), Barrier->getParent()))
return false;
// Find all references in the barrier mbb.
SmallPtrSet<MachineInstr*, 4> RefsInMBB;
for (MachineRegisterInfo::reg_iterator I = MRI->reg_begin(CurrLI->reg),