Preserve both isPHIDef and isDefByCopy bits when copying parent values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127697 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SplitKit.cpp b/lib/CodeGen/SplitKit.cpp
index 99d05fa..9c1f75c 100644
--- a/lib/CodeGen/SplitKit.cpp
+++ b/lib/CodeGen/SplitKit.cpp
@@ -274,10 +274,6 @@
// Create a new value.
VNInfo *VNI = LI->getNextValue(Idx, 0, LIS.getVNInfoAllocator());
- // Preserve the PHIDef bit.
- if (ParentVNI->isPHIDef() && Idx == ParentVNI->def)
- VNI->setIsPHIDef(true);
-
// Use insert for lookup, so we can add missing values with a second lookup.
std::pair<ValueMap::iterator, bool> InsP =
Values.insert(std::make_pair(std::make_pair(RegIdx, ParentVNI->id), VNI));
@@ -845,7 +841,10 @@
if (ParentVNI->isUnused())
continue;
unsigned RegIdx = RegAssign.lookup(ParentVNI->def);
- defValue(RegIdx, ParentVNI, ParentVNI->def);
+ VNInfo *VNI = defValue(RegIdx, ParentVNI, ParentVNI->def);
+ VNI->setIsPHIDef(ParentVNI->isPHIDef());
+ VNI->setCopy(ParentVNI->getCopy());
+
// Mark rematted values as complex everywhere to force liveness computation.
// The new live ranges may be truncated.
if (Edit->didRematerialize(ParentVNI))