Simplify early clobber slots a bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144507 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 954d9bb..1346487 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -197,11 +197,7 @@
LiveVariables::VarInfo& vi = lv_->getVarInfo(interval.reg);
if (interval.empty()) {
// Get the Idx of the defining instructions.
- SlotIndex defIndex = MIIdx.getRegSlot();
- // Earlyclobbers move back one, so that they overlap the live range
- // of inputs.
- if (MO.isEarlyClobber())
- defIndex = MIIdx.getRegSlot(true);
+ SlotIndex defIndex = MIIdx.getRegSlot(MO.isEarlyClobber());
// Make sure the first definition is not a partial redefinition. Add an
// <imp-def> of the full register.
@@ -323,9 +319,7 @@
// 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.
- SlotIndex RedefIndex = MIIdx.getRegSlot();
- if (MO.isEarlyClobber())
- RedefIndex = MIIdx.getRegSlot(true);
+ SlotIndex RedefIndex = MIIdx.getRegSlot(MO.isEarlyClobber());
const LiveRange *OldLR =
interval.getLiveRangeContaining(RedefIndex.getRegSlot(true));
@@ -402,10 +396,7 @@
DEBUG(dbgs() << "\t\tregister: " << PrintReg(interval.reg, tri_));
SlotIndex baseIndex = MIIdx;
- SlotIndex start = baseIndex.getRegSlot();
- // Earlyclobbers move back one.
- if (MO.isEarlyClobber())
- start = MIIdx.getRegSlot(true);
+ SlotIndex start = baseIndex.getRegSlot(MO.isEarlyClobber());
SlotIndex end = start;
// If it is not used after definition, it is considered dead at