[llvm-commits] [llvm] r45815 - /llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp

[Owen Anderson]

Author: resistor
Date: Wed Jan  9 21:12:54 2008
New Revision: 45815

URL: http://llvm.org/viewvc/llvm-project?rev=45815&view=rev
Log:
Don't use LiveVariables::VarInfo::DefInst.

Modified:
    llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp

Modified: llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp?rev=45815&r1=45814&r2=45815&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp (original)
+++ llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp Wed Jan  9 21:12:54 2008
@@ -309,7 +309,14 @@
       // 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);