From c95f075c43488234e44b1213dfd762ae0a7509ea Mon Sep 17 00:00:00 2001 From: Owen Anderson Date: Thu, 10 Jan 2008 03:12:54 +0000 Subject: [PATCH] Don't use LiveVariables::VarInfo::DefInst. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45815 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/LiveIntervalAnalysis.cpp | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp index 80d3547e4b4..b4f50e19291 100644 --- a/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -309,7 +309,14 @@ void LiveIntervals::handleVirtualRegisterDef(MachineBasicBlock *mbb, // are actually two values in the live interval. Because of this we // need to take the LiveRegion that defines this register and split it // into two values. - unsigned DefIndex = getDefIndex(getInstructionIndex(vi.DefInst)); + MachineRegisterInfo& MRI = mbb->getParent()->getRegInfo(); + unsigned lowIndex = ~0U; + for (MachineRegisterInfo::def_iterator DI = MRI.def_begin(interval.reg), + DE = MRI.def_end(); DI != DE; ++DI) + if (getInstructionIndex(&*DI) < lowIndex) + lowIndex = getInstructionIndex(&*DI); + + unsigned DefIndex = getDefIndex(lowIndex); unsigned RedefIndex = getDefIndex(MIIdx); const LiveRange *OldLR = interval.getLiveRangeContaining(RedefIndex-1);