Remove SlotIndex::PHI_BIT. It is no longer used by anything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114779 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/Splitter.cpp b/lib/CodeGen/Splitter.cpp
index 38f3b1f..1cb2f62 100644
--- a/lib/CodeGen/Splitter.cpp
+++ b/lib/CodeGen/Splitter.cpp
@@ -178,8 +178,7 @@
         li.removeRange(ls.lis->getMBBStartIdx(outBlock), copyDefIdx);
 
         VNInfo *newVal =
-          getNewLI()->getNextValue(SlotIndex(ls.lis->getMBBStartIdx(outBlock),
-                                             true),
+          getNewLI()->getNextValue(ls.lis->getMBBStartIdx(outBlock),
                                    0, false, ls.lis->getVNInfoAllocator());
 
         getNewLI()->addRange(LiveRange(ls.lis->getMBBStartIdx(outBlock),