From d3be46214ca75f0ba7d5fc6cd322d222dd53e2cb Mon Sep 17 00:00:00 2001 From: Owen Anderson Date: Wed, 21 Jan 2009 08:18:03 +0000 Subject: [PATCH] I accidentally removed this check in an earlier commit, which cause breakage in the pre alloc splitter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62678 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/PreAllocSplitting.cpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/lib/CodeGen/PreAllocSplitting.cpp b/lib/CodeGen/PreAllocSplitting.cpp index 3c8257f1dac..ca4f7ec6f2d 100644 --- a/lib/CodeGen/PreAllocSplitting.cpp +++ b/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 RefsInMBB; for (MachineRegisterInfo::reg_iterator I = MRI->reg_begin(CurrLI->reg), -- 2.34.1