[llvm] r286383 - [Hexagon] Silence "sometimes uninitialized" warning in HexagonCopyToCombine

[Krzysztof Parzyszek via llvm-commits]

Author: kparzysz
Date: Wed Nov  9 11:50:46 2016
New Revision: 286383

URL: http://llvm.org/viewvc/llvm-project?rev=286383&view=rev
Log:
[Hexagon] Silence "sometimes uninitialized" warning in HexagonCopyToCombine

Modified:
    llvm/trunk/lib/Target/Hexagon/HexagonCopyToCombine.cpp

Modified: llvm/trunk/lib/Target/Hexagon/HexagonCopyToCombine.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Hexagon/HexagonCopyToCombine.cpp?rev=286383&r1=286382&r2=286383&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Hexagon/HexagonCopyToCombine.cpp (original)
+++ llvm/trunk/lib/Target/Hexagon/HexagonCopyToCombine.cpp Wed Nov  9 11:50:46 2016
@@ -593,7 +593,9 @@ void HexagonCopyToCombine::combine(Machi
     else
       SuperRC = &Hexagon::VecDblRegs128BRegClass;
     SubLo = Hexagon::vsub_lo;
-  }
+  } else
+    llvm_unreachable("Unexpected register class");
+
   // Get the double word register.
   unsigned DoubleRegDest = TRI->getMatchingSuperReg(LoRegDef, SubLo, SuperRC);
   assert(DoubleRegDest != 0 && "Expect a valid register");