Allow creation of single-byte MCAtoms.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184344 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCObjectDisassembler.cpp b/lib/MC/MCObjectDisassembler.cpp
index bb3de17..1ea6eed 100644
--- a/lib/MC/MCObjectDisassembler.cpp
+++ b/lib/MC/MCObjectDisassembler.cpp
@@ -126,6 +126,7 @@
     MCTextAtom *TA = dyn_cast<MCTextAtom>(*AI);
     if (!TA) continue;
     Calls.insert(TA->getBeginAddr());
+    BBInfos[TA->getBeginAddr()].Atom = TA;
     for (MCTextAtom::const_iterator II = TA->begin(), IE = TA->end();
          II != IE; ++II) {
       if (MIA.isTerminator(II->Inst))
@@ -145,7 +146,6 @@
     MCAtom *A = Module->findAtomContaining(*SI);
     if (!A) continue;
     MCTextAtom *TA = cast<MCTextAtom>(A);
-    BBInfos[TA->getBeginAddr()].Atom = TA;
     if (TA->getBeginAddr() == *SI)
       continue;
     MCTextAtom *NewAtom = TA->split(*SI);