[llvm] r339576 - [Hexagon] Silence -Wuninitialized warning from GCC 5.4, NFC

[Krzysztof Parzyszek via llvm-commits]

Author: kparzysz
Date: Mon Aug 13 08:08:25 2018
New Revision: 339576

URL: http://llvm.org/viewvc/llvm-project?rev=339576&view=rev
Log:
[Hexagon] Silence -Wuninitialized warning from GCC 5.4, NFC

Patch by Kim Gräsman.

Differential Revision: https://reviews.llvm.org/D50623

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

Modified: llvm/trunk/lib/Target/Hexagon/HexagonBitSimplify.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Hexagon/HexagonBitSimplify.cpp?rev=339576&r1=339575&r2=339576&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Hexagon/HexagonBitSimplify.cpp (original)
+++ llvm/trunk/lib/Target/Hexagon/HexagonBitSimplify.cpp Mon Aug 13 08:08:25 2018
@@ -1985,6 +1985,10 @@ bool BitSimplification::genStoreImmediat
     case Hexagon::S2_storeri_io:
       V = int32_t(U);
       break;
+    default:
+      // Opc is already checked above to be one of the three store instructions.
+      // This silences a -Wuninitialized false positive on GCC 5.4.
+      llvm_unreachable("Unexpected store opcode");
   }
   if (!isInt<8>(V))
     return false;