When a virtual register is folded into an instruction, keep track of whether

it was a use, def, or both.  This allows us to be less pessimistic in our
analysis of them.  In practice, this doesn't make a big difference, but it
doesn't hurt either.

llvm-svn: 16632

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
index 40b11f1e8e1..6916e966949 100644
--- a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -223,7 +223,7 @@ addIntervalsForSpills(const LiveInterval &li, VirtRegMap &vrm, int slot) {
           if (MachineInstr* fmi = mri_->foldMemoryOperand(mi, i, slot)) {
             if (lv_)
               lv_->instructionChanged(mi, fmi);
-            vrm.virtFolded(li.reg, mi, fmi);
+            vrm.virtFolded(li.reg, mi, i, fmi);
             mi2iMap_.erase(mi);
             i2miMap_[index/InstrSlots::NUM] = fmi;
             mi2iMap_[fmi] = index;