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| author | Owen Anderson <resistor@mac.com> | 2009-01-21 08:18:03 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2009-01-21 08:18:03 +0000 |
| commit | fe48dfa0f21e4eb1e4414c6df2f95ea0cb3709df (patch) | |
| tree | b858351273d6a949da2c88a11acb12eddcf260a9 /llvm | |
| parent | 3029b35faac0986a4b65229a1f1f1f235b1755f4 (diff) | |
| download | bcm5719-llvm-fe48dfa0f21e4eb1e4414c6df2f95ea0cb3709df.tar.gz bcm5719-llvm-fe48dfa0f21e4eb1e4414c6df2f95ea0cb3709df.zip | |
I accidentally removed this check in an earlier commit, which cause breakage in the pre alloc splitter.
llvm-svn: 62678
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/CodeGen/PreAllocSplitting.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/PreAllocSplitting.cpp b/llvm/lib/CodeGen/PreAllocSplitting.cpp index 3c8257f1dac..ca4f7ec6f2d 100644 --- a/llvm/lib/CodeGen/PreAllocSplitting.cpp +++ b/llvm/lib/CodeGen/PreAllocSplitting.cpp @@ -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), |
