[llvm] r360520 - HexagonConstEvaluator::evaluateHexExt - check incoming opcodes. NFCI.

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Sat May 11 08:24:34 2019
New Revision: 360520

URL: http://llvm.org/viewvc/llvm-project?rev=360520&view=rev
Log:
HexagonConstEvaluator::evaluateHexExt - check incoming opcodes. NFCI.

Only certain extension opcodes are supported - fixes scan build warning.

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

Modified: llvm/trunk/lib/Target/Hexagon/HexagonConstPropagation.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Hexagon/HexagonConstPropagation.cpp?rev=360520&r1=360519&r2=360520&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Hexagon/HexagonConstPropagation.cpp (original)
+++ llvm/trunk/lib/Target/Hexagon/HexagonConstPropagation.cpp Sat May 11 08:24:34 2019
@@ -2723,6 +2723,8 @@ bool HexagonConstEvaluator::evaluateHexE
     case Hexagon::A2_sxtw:
       Bits = 32;
       break;
+    default:
+      llvm_unreachable("Unhandled extension opcode");
   }
 
   bool Signed = false;