From 9eadc3179314010b0e8e854d3e8b8bb7e66e8040 Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Sat, 11 May 2019 15:24:34 +0000
Subject: [PATCH] HexagonConstEvaluator::evaluateHexExt - check incoming
 opcodes. NFCI.

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@360520 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Hexagon/HexagonConstPropagation.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/Target/Hexagon/HexagonConstPropagation.cpp b/lib/Target/Hexagon/HexagonConstPropagation.cpp
index f19a13f9b4c..2d5444ce27f 100644
--- a/lib/Target/Hexagon/HexagonConstPropagation.cpp
+++ b/lib/Target/Hexagon/HexagonConstPropagation.cpp
@@ -2723,6 +2723,8 @@ bool HexagonConstEvaluator::evaluateHexExt(const MachineInstr &MI,
     case Hexagon::A2_sxtw:
       Bits = 32;
       break;
+    default:
+      llvm_unreachable("Unhandled extension opcode");
   }
 
   bool Signed = false;
-- 
2.50.1